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authorJaegeuk Kim <jaegeuk@kernel.org>2016-07-10 14:01:03 -0400
committerTheodore Ts'o <tytso@mit.edu>2016-07-10 14:01:03 -0400
commita7550b30ab709ffb9bbe48669adf7d8556f3698f (patch)
tree5ed986d93b2df41cad68bdfa0851604bb039d1d1 /fs/ext4/dir.c
parentff0031d848a0cd7002606f9feef958de8d5edf19 (diff)
downloadlinux-a7550b30ab709ffb9bbe48669adf7d8556f3698f.tar.bz2
ext4 crypto: migrate into vfs's crypto engine
This patch removes the most parts of internal crypto codes. And then, it modifies and adds some ext4-specific crypt codes to use the generic facility. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/dir.c')
-rw-r--r--fs/ext4/dir.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 68323e3da3fa..67415e0e6af0 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -109,10 +109,10 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
struct super_block *sb = inode->i_sb;
struct buffer_head *bh = NULL;
int dir_has_error = 0;
- struct ext4_str fname_crypto_str = {.name = NULL, .len = 0};
+ struct fscrypt_str fstr = FSTR_INIT(NULL, 0);
if (ext4_encrypted_inode(inode)) {
- err = ext4_get_encryption_info(inode);
+ err = fscrypt_get_encryption_info(inode);
if (err && err != -ENOKEY)
return err;
}
@@ -139,8 +139,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
}
if (ext4_encrypted_inode(inode)) {
- err = ext4_fname_crypto_alloc_buffer(inode, EXT4_NAME_LEN,
- &fname_crypto_str);
+ err = fscrypt_fname_alloc_buffer(inode, EXT4_NAME_LEN, &fstr);
if (err < 0)
return err;
}
@@ -253,16 +252,19 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
get_dtype(sb, de->file_type)))
goto done;
} else {
- int save_len = fname_crypto_str.len;
+ int save_len = fstr.len;
+ struct fscrypt_str de_name =
+ FSTR_INIT(de->name,
+ de->name_len);
/* Directory is encrypted */
- err = ext4_fname_disk_to_usr(inode,
- NULL, de, &fname_crypto_str);
- fname_crypto_str.len = save_len;
+ err = fscrypt_fname_disk_to_usr(inode,
+ 0, 0, &de_name, &fstr);
+ fstr.len = save_len;
if (err < 0)
goto errout;
if (!dir_emit(ctx,
- fname_crypto_str.name, err,
+ fstr.name, err,
le32_to_cpu(de->inode),
get_dtype(sb, de->file_type)))
goto done;
@@ -281,7 +283,7 @@ done:
err = 0;
errout:
#ifdef CONFIG_EXT4_FS_ENCRYPTION
- ext4_fname_crypto_free_buffer(&fname_crypto_str);
+ fscrypt_fname_free_buffer(&fstr);
#endif
brelse(bh);
return err;
@@ -432,7 +434,7 @@ void ext4_htree_free_dir_info(struct dir_private_info *p)
int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
__u32 minor_hash,
struct ext4_dir_entry_2 *dirent,
- struct ext4_str *ent_name)
+ struct fscrypt_str *ent_name)
{
struct rb_node **p, *parent = NULL;
struct fname *fname, *new_fn;
@@ -609,7 +611,7 @@ finished:
static int ext4_dir_open(struct inode * inode, struct file * filp)
{
if (ext4_encrypted_inode(inode))
- return ext4_get_encryption_info(inode) ? -EACCES : 0;
+ return fscrypt_get_encryption_info(inode) ? -EACCES : 0;
return 0;
}