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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-21 01:19:06 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-29 01:41:48 +0300 |
| commit | f424f664f0e8949361d268e2e91c7acc8cf63eb2 (patch) | |
| tree | 985ed29a13fcd37b48f261e0db3df134079df176 /fs/f2fs/f2fs.h | |
| parent | b93531dd7b9b39faace22abde2d5296e87b50499 (diff) | |
| download | linux-f424f664f0e8949361d268e2e91c7acc8cf63eb2.tar.xz | |
f2fs crypto: add encryption policy and password salt support
This patch adds encryption policy and password salt support through ioctl
implementation.
It adds three ioctls:
F2FS_IOC_SET_ENCRYPTION_POLICY,
F2FS_IOC_GET_ENCRYPTION_POLICY,
F2FS_IOC_GET_ENCRYPTION_PWSALT, which use xattr operations.
Note that, these definition and codes are taken from ext4 crypto support.
For f2fs, xattr operations and on-disk flags for superblock and inode were
changed.
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Ildar Muslukhov <muslukhovi@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 2c2948fbc35f..709660bd926a 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -229,6 +229,13 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) +#define F2FS_IOC_SET_ENCRYPTION_POLICY \ + _IOR('f', 19, struct f2fs_encryption_policy) +#define F2FS_IOC_GET_ENCRYPTION_PWSALT \ + _IOW('f', 20, __u8[16]) +#define F2FS_IOC_GET_ENCRYPTION_POLICY \ + _IOW('f', 21, struct f2fs_encryption_policy) + /* * should be same as XFS_IOC_GOINGDOWN. * Flags for going down operation used by FS_IOC_GOINGDOWN @@ -367,6 +374,8 @@ struct f2fs_map_blocks { #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4 +#include "f2fs_crypto.h" + #define DEF_DIR_LEVEL 0 struct f2fs_inode_info { @@ -1946,4 +1955,11 @@ static inline int f2fs_sb_has_crypto(struct super_block *sb) return 0; #endif } + +/* crypto_policy.c */ +int f2fs_is_child_context_consistent_with_parent(struct inode *, + struct inode *); +int f2fs_inherit_context(struct inode *, struct inode *, struct page *); +int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *); +int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *); #endif |