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fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h

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The encryption modes are validated by fs/crypto/, not by individual
filesystems.  Therefore, move fscrypt_valid_enc_modes() from fscrypt.h
to fscrypt_private.h.

Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
This commit is contained in:
Eric Biggers 2018-01-05 10:44:58 -08:00 • committed by Theodore Ts'o
commit bb8179e5a8
2 changed files with 14 additions and 14 deletions
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14
fs/crypto/fscrypt_private.h
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@ -71,6 +71,20 @@ typedef enum {
#define FS_CTX_REQUIRES_FREE_ENCRYPT_FL 0x00000001
#define FS_CTX_HAS_BOUNCE_BUFFER_FL 0x00000002
static inline bool fscrypt_valid_enc_modes(u32 contents_mode,
u32 filenames_mode)
{
if (contents_mode == FS_ENCRYPTION_MODE_AES_128_CBC &&
filenames_mode == FS_ENCRYPTION_MODE_AES_128_CTS)
return true;
if (contents_mode == FS_ENCRYPTION_MODE_AES_256_XTS &&
filenames_mode == FS_ENCRYPTION_MODE_AES_256_CTS)
return true;
return false;
}
/* crypto.c */
extern struct kmem_cache *fscrypt_info_cachep;
extern int fscrypt_initialize(unsigned int cop_flags);