From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: [PATCH 1/5] ext4: clean up superblock encryption mode fields Date: Tue, 12 May 2015 14:59:48 -0400 Message-ID: <1431457192-3432-1-git-send-email-tytso@mit.edu> Cc: jaegeuk@kernel.org, Theodore Ts'o To: Ext4 Developers List Return-path: Received: from imap.thunk.org ([74.207.234.97]:60050 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753481AbbELTAN (ORCPT ); Tue, 12 May 2015 15:00:13 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: The superblock fields s_file_encryption_mode and s_dir_encryption_mode are vestigal, so remove them as a cleanup. While we're at it, allow file systems with both encryption and inline_data enabled at the same time to work correctly. We can't have encrypted inodes with inline data, but there's no reason to prohibit unencrypted inodes from using the inline data feature. Signed-off-by: Theodore Ts'o --- fs/ext4/crypto_policy.c | 9 +++++++-- fs/ext4/ext4.h | 6 ------ fs/ext4/ialloc.c | 19 ------------------- fs/ext4/super.c | 5 ----- 4 files changed, 7 insertions(+), 32 deletions(-) diff --git a/fs/ext4/crypto_policy.c b/fs/ext4/crypto_policy.c index 370d3aa..683391f 100644 --- a/fs/ext4/crypto_policy.c +++ b/fs/ext4/crypto_policy.c @@ -51,6 +51,10 @@ static int ext4_create_encryption_context_from_policy( struct ext4_encryption_context ctx; int res = 0; + res = ext4_convert_inline_data(inode); + if (res) + return res; + ctx.format = EXT4_ENCRYPTION_CONTEXT_FORMAT_V1; memcpy(ctx.master_key_descriptor, policy->master_key_descriptor, EXT4_KEY_DESCRIPTOR_SIZE); @@ -199,8 +203,9 @@ int ext4_inherit_context(struct inode *parent, struct inode *child) res = ext4_xattr_set(child, EXT4_XATTR_INDEX_ENCRYPTION, EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx, sizeof(ctx), 0); - if (!res) + if (!res) { ext4_set_inode_flag(child, EXT4_INODE_ENCRYPT); + ext4_clear_inode_state(child, EXT4_STATE_MAY_INLINE_DATA); + } return res; - } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 1db3bfa..641b781 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1374,12 +1374,6 @@ struct ext4_sb_info { struct ratelimit_state s_err_ratelimit_state; struct ratelimit_state s_warning_ratelimit_state; struct ratelimit_state s_msg_ratelimit_state; - -#ifdef CONFIG_EXT4_FS_ENCRYPTION - /* Encryption */ - uint32_t s_file_encryption_mode; - uint32_t s_dir_encryption_mode; -#endif }; static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 1eaa6cb..ddca169 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1034,28 +1034,9 @@ got: ext4_set_inode_state(inode, EXT4_STATE_NEW); ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize; -#ifdef CONFIG_EXT4_FS_ENCRYPTION - if ((sbi->s_file_encryption_mode == EXT4_ENCRYPTION_MODE_INVALID) && - (sbi->s_dir_encryption_mode == EXT4_ENCRYPTION_MODE_INVALID)) { - ei->i_inline_off = 0; - if (EXT4_HAS_INCOMPAT_FEATURE(sb, - EXT4_FEATURE_INCOMPAT_INLINE_DATA)) - ext4_set_inode_state(inode, - EXT4_STATE_MAY_INLINE_DATA); - } else { - /* Inline data and encryption are incompatible - * We turn off inline data since encryption is enabled */ - ei->i_inline_off = 1; - if (EXT4_HAS_INCOMPAT_FEATURE(sb, - EXT4_FEATURE_INCOMPAT_INLINE_DATA)) - ext4_clear_inode_state(inode, - EXT4_STATE_MAY_INLINE_DATA); - } -#else ei->i_inline_off = 0; if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_INLINE_DATA)) ext4_set_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA); -#endif ret = inode; err = dquot_alloc_inode(inode); if (err) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ef19bda..79311e0 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3450,11 +3450,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (sb->s_bdev->bd_part) sbi->s_sectors_written_start = part_stat_read(sb->s_bdev->bd_part, sectors[1]); -#ifdef CONFIG_EXT4_FS_ENCRYPTION - /* Modes of operations for file and directory encryption. */ - sbi->s_file_encryption_mode = EXT4_ENCRYPTION_MODE_AES_256_XTS; - sbi->s_dir_encryption_mode = EXT4_ENCRYPTION_MODE_INVALID; -#endif /* Cleanup superblock name */ for (cp = sb->s_id; (cp = strchr(cp, '/'));) -- 2.3.0