security/apparmor/include/crypto.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * AppArmor security module
   4  *
   5  * This file contains AppArmor policy loading interface function definitions.
   6  *
   7  * Copyright 2013 Canonical Ltd.
   8  */
   9
  10 #ifndef __APPARMOR_CRYPTO_H
  11 #define __APPARMOR_CRYPTO_H
  12
  13 #include "policy.h"
  14
  15 #ifdef CONFIG_SECURITY_APPARMOR_HASH
  16 unsigned int aa_hash_size(void);
  17 char *aa_calc_hash(void *data, size_t len);
  18 int aa_calc_profile_hash(struct aa_profile *profile, u32 version, void *start,
  19                          size_t len);
  20 #else
  21 static inline char *aa_calc_hash(void *data, size_t len)
  22 {
  23         return NULL;
  24 }
  25 static inline int aa_calc_profile_hash(struct aa_profile *profile, u32 version,
  26                                        void *start, size_t len)
  27 {
  28         return 0;
  29 }
  30
  31 static inline unsigned int aa_hash_size(void)
  32 {
  33         return 0;
  34 }
  35 #endif
  36
  37 #endif /* __APPARMOR_CRYPTO_H */