/*
   * Copyright (C) 2005-2010 IBM Corporation
   *
   * Authors:
   * Mimi Zohar <zohar@us.ibm.com>
   * Kylene Hall <kjhall@us.ibm.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, version 2 of the License.
   *
   * File: evm.h
   *
   */

  
  #ifndef __INTEGRITY_EVM_H
  #define __INTEGRITY_EVM_H

  #include <linux/xattr.h>

  #include <linux/security.h>

  #include "../integrity.h"
  
  extern int evm_initialized;
  extern char *evm_hmac;

  extern char *evm_hash;

  extern struct crypto_shash *hmac_tfm;

  extern struct crypto_shash *hash_tfm;

  /* List of EVM protected security xattrs */
  extern char *evm_config_xattrnames[];
  
  extern int evm_init_key(void);
  extern int evm_update_evmxattr(struct dentry *dentry,
  			       const char *req_xattr_name,
  			       const char *req_xattr_value,
  			       size_t req_xattr_value_len);
  extern int evm_calc_hmac(struct dentry *dentry, const char *req_xattr_name,
  			 const char *req_xattr_value,
  			 size_t req_xattr_value_len, char *digest);

  extern int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name,
  			 const char *req_xattr_value,
  			 size_t req_xattr_value_len, char *digest);

  extern int evm_init_hmac(struct inode *inode, const struct xattr *xattr,
  			 char *hmac_val);

  extern int evm_init_secfs(void);
  extern void evm_cleanup_secfs(void);

  
  #endif