security/apparmor/include/crypto.h

   1 /*
   2  * AppArmor security module
   3  *
   4  * This file contains AppArmor policy loading interface function definitions.
   5  *
   6  * Copyright 2013 Canonical Ltd.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation, version 2 of the
  11  * License.
  12  */
  13
  14 #ifndef __APPARMOR_CRYPTO_H
  15 #define __APPARMOR_CRYPTO_H
  16
  17 #include "policy.h"
  18
  19 #ifdef CONFIG_SECURITY_APPARMOR_HASH
  20 unsigned int aa_hash_size(void);
  21 char *aa_calc_hash(void *data, size_t len);
  22 int aa_calc_profile_hash(struct aa_profile *profile, u32 version, void *start,
  23                          size_t len);
  24 #else
  25 static inline char *aa_calc_hash(void *data, size_t len)
  26 {
  27         return NULL;
  28 }
  29 static inline int aa_calc_profile_hash(struct aa_profile *profile, u32 version,
  30                                        void *start, size_t len)
  31 {
  32         return 0;
  33 }
  34
  35 static inline unsigned int aa_hash_size(void)
  36 {
  37         return 0;
  38 }
  39 #endif
  40
  41 #endif /* __APPARMOR_CRYPTO_H */