1 /* 2 * Copyright (C) 2005-2010 IBM Corporation 3 * 4 * Authors: 5 * Mimi Zohar <zohar@us.ibm.com> 6 * Kylene Hall <kjhall@us.ibm.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation, version 2 of the License. 11 * 12 * File: evm.h 13 * 14 */ 15 16 #ifndef __INTEGRITY_EVM_H 17 #define __INTEGRITY_EVM_H 18 19 #include <linux/xattr.h> 20 #include <linux/security.h> 21 22 #include "../integrity.h" 23 24 extern int evm_initialized; 25 extern char *evm_hmac; 26 extern char *evm_hash; 27 extern int evm_hmac_version; 28 29 extern struct crypto_shash *hmac_tfm; 30 extern struct crypto_shash *hash_tfm; 31 32 /* List of EVM protected security xattrs */ 33 extern char *evm_config_xattrnames[]; 34 35 int evm_init_key(void); 36 int evm_update_evmxattr(struct dentry *dentry, 37 const char *req_xattr_name, 38 const char *req_xattr_value, 39 size_t req_xattr_value_len); 40 int evm_calc_hmac(struct dentry *dentry, const char *req_xattr_name, 41 const char *req_xattr_value, 42 size_t req_xattr_value_len, char *digest); 43 int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name, 44 const char *req_xattr_value, 45 size_t req_xattr_value_len, char *digest); 46 int evm_init_hmac(struct inode *inode, const struct xattr *xattr, 47 char *hmac_val); 48 int evm_init_secfs(void); 49 50 #endif 51