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ubifs: Implement encrypt/decrypt for all IO

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Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
2016-09-29 22:20:19 +02:00
parent 1ee77870c9
commit 7799953b34
5 changed files with 152 additions and 28 deletions
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31
fs/ubifs/ubifs.h
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@@ -135,6 +135,12 @@
*/
#define WORST_COMPR_FACTOR 2
#ifdef CONFIG_UBIFS_FS_ENCRYPTION
#define UBIFS_CIPHER_BLOCK_SIZE FS_CRYPTO_BLOCK_SIZE
#else
#define UBIFS_CIPHER_BLOCK_SIZE 0
#endif
/*
* How much memory is needed for a buffer where we compress a data node.
*/
@@ -1774,8 +1780,6 @@ void ubifs_compress(const struct ubifs_info *c, const void *in_buf, int in_len,
int ubifs_decompress(const struct ubifs_info *c, const void *buf, int len,
void *out, int *out_len, int compr_type);
extern struct fscrypt_operations ubifs_crypt_operations;
#include "debug.h"
#include "misc.h"
#include "key.h"
@@ -1803,8 +1807,31 @@ extern struct fscrypt_operations ubifs_crypt_operations;
#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
static inline int ubifs_encrypt(const struct inode *inode,
struct ubifs_data_node *dn,
unsigned int in_len, unsigned int *out_len,
int block)
{
ubifs_assert(0);
return -EOPNOTSUPP;
}
static inline int ubifs_decrypt(const struct inode *inode,
struct ubifs_data_node *dn,
unsigned int *out_len, int block)
{
ubifs_assert(0);
return -EOPNOTSUPP;
}
#else
/* crypto.c */
int ubifs_encrypt(const struct inode *inode, struct ubifs_data_node *dn,
unsigned int in_len, unsigned int *out_len, int block);
int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn,
unsigned int *out_len, int block);
#endif
extern struct fscrypt_operations ubifs_crypt_operations;
static inline bool __ubifs_crypt_is_encrypted(struct inode *inode)
{
struct ubifs_inode *ui = ubifs_inode(inode);