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fscrypt: move v1 policy key setup to keysetup_v1.c

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In preparation for introducing v2 encryption policies which will find
and derive encryption keys differently from the current v1 encryption
policies, move the v1 policy-specific key setup code from keyinfo.c into
keysetup_v1.c.

Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers
2019-08-04 19:35:45 -07:00
parent 3ec4f2a629
commit 0109ce76dd
4 changed files with 369 additions and 322 deletions
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17
fs/crypto/fscrypt_private.h
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@@ -173,4 +173,21 @@ fscrypt_mode_supports_direct_key(const struct fscrypt_mode *mode)
return mode->ivsize >= offsetofend(union fscrypt_iv, nonce);
}
extern struct crypto_skcipher *
fscrypt_allocate_skcipher(struct fscrypt_mode *mode, const u8 *raw_key,
const struct inode *inode);
extern int fscrypt_set_derived_key(struct fscrypt_info *ci,
const u8 *derived_key);
/* keysetup_v1.c */
extern void fscrypt_put_direct_key(struct fscrypt_direct_key *dk);
extern int fscrypt_setup_v1_file_key(struct fscrypt_info *ci,
const u8 *raw_master_key);
extern int fscrypt_setup_v1_file_key_via_subscribed_keyrings(
struct fscrypt_info *ci);
#endif /* _FSCRYPT_PRIVATE_H */