From 640778fbc97b36757bd1f857ba4b599a200517c2 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 12 May 2015 13:33:00 -0700 Subject: [PATCH] f2fs crypto: get rid of ci_mode from struct f2fs_crypt_info This patch integrates the below patch into f2fs. "ext4 crypto: get rid of ci_mode from struct ext4_crypt_info The ci_mode field was superfluous, and getting rid of it gets rid of an unused hole in the structure." Signed-off-by: Theodore Ts'o Signed-off-by: Jaegeuk Kim --- fs/f2fs/crypto.c | 11 +++++------ fs/f2fs/crypto_fname.c | 4 ++-- fs/f2fs/crypto_key.c | 12 ++++++------ fs/f2fs/f2fs_crypto.h | 1 - 4 files changed, 13 insertions(+), 15 deletions(-) diff --git a/fs/f2fs/crypto.c b/fs/f2fs/crypto.c index 4057c07242c6..e4058b92c774 100644 --- a/fs/f2fs/crypto.c +++ b/fs/f2fs/crypto.c @@ -151,14 +151,13 @@ struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *inode) * Allocate a new Crypto API context if we don't already have * one or if it isn't the right mode. */ - BUG_ON(ci->ci_mode == F2FS_ENCRYPTION_MODE_INVALID); - if (ctx->tfm && (ctx->mode != ci->ci_mode)) { + if (ctx->tfm && (ctx->mode != ci->ci_data_mode)) { crypto_free_tfm(ctx->tfm); ctx->tfm = NULL; ctx->mode = F2FS_ENCRYPTION_MODE_INVALID; } if (!ctx->tfm) { - switch (ci->ci_mode) { + switch (ci->ci_data_mode) { case F2FS_ENCRYPTION_MODE_AES_256_XTS: ctx->tfm = crypto_ablkcipher_tfm( crypto_alloc_ablkcipher("xts(aes)", 0, 0)); @@ -178,9 +177,9 @@ struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *inode) ctx->tfm = NULL; goto out; } - ctx->mode = ci->ci_mode; + ctx->mode = ci->ci_data_mode; } - BUG_ON(ci->ci_size != f2fs_encryption_key_size(ci->ci_mode)); + BUG_ON(ci->ci_size != f2fs_encryption_key_size(ci->ci_data_mode)); /* * There shouldn't be a bounce page attached to the crypto @@ -388,7 +387,7 @@ static int f2fs_page_crypto(struct f2fs_crypto_ctx *ctx, int res = 0; BUG_ON(!ctx->tfm); - BUG_ON(ctx->mode != fi->i_crypt_info->ci_mode); + BUG_ON(ctx->mode != fi->i_crypt_info->ci_data_mode); if (ctx->mode != F2FS_ENCRYPTION_MODE_AES_256_XTS) { printk_ratelimited(KERN_ERR diff --git a/fs/f2fs/crypto_fname.c b/fs/f2fs/crypto_fname.c index 8f3ff9b3caeb..e3a1bdc70b03 100644 --- a/fs/f2fs/crypto_fname.c +++ b/fs/f2fs/crypto_fname.c @@ -269,9 +269,9 @@ int f2fs_setup_fname_crypto(struct inode *inode) if (!ci || ci->ci_ctfm) return 0; - if (ci->ci_mode != F2FS_ENCRYPTION_MODE_AES_256_CTS) { + if (ci->ci_filename_mode != F2FS_ENCRYPTION_MODE_AES_256_CTS) { printk_once(KERN_WARNING "f2fs: unsupported key mode %d\n", - ci->ci_mode); + ci->ci_filename_mode); return -ENOKEY; } diff --git a/fs/f2fs/crypto_key.c b/fs/f2fs/crypto_key.c index 6b9312b281b7..5ae9cc8fd52b 100644 --- a/fs/f2fs/crypto_key.c +++ b/fs/f2fs/crypto_key.c @@ -148,14 +148,14 @@ int _f2fs_get_encryption_info(struct inode *inode) memcpy(crypt_info->ci_master_key, ctx.master_key_descriptor, sizeof(crypt_info->ci_master_key)); if (S_ISREG(inode->i_mode)) - crypt_info->ci_mode = ctx.contents_encryption_mode; + crypt_info->ci_size = + f2fs_encryption_key_size(crypt_info->ci_data_mode); else if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) - crypt_info->ci_mode = ctx.filenames_encryption_mode; - else { - printk(KERN_ERR "f2fs crypto: Unsupported inode type.\n"); + crypt_info->ci_size = + f2fs_encryption_key_size(crypt_info->ci_filename_mode); + else BUG(); - } - crypt_info->ci_size = f2fs_encryption_key_size(crypt_info->ci_mode); + BUG_ON(!crypt_info->ci_size); memcpy(full_key_descriptor, F2FS_KEY_DESC_PREFIX, diff --git a/fs/f2fs/f2fs_crypto.h b/fs/f2fs/f2fs_crypto.h index 6e4139493ba5..58682d2830e9 100644 --- a/fs/f2fs/f2fs_crypto.h +++ b/fs/f2fs/f2fs_crypto.h @@ -75,7 +75,6 @@ struct f2fs_encryption_key { } __attribute__((__packed__)); struct f2fs_crypt_info { - unsigned char ci_mode; unsigned char ci_size; char ci_data_mode; char ci_filename_mode; -- GitLab