2 * Copyright (C) 2009-2010 IBM Corporation
5 * Mimi Zohar <zohar@us.ibm.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, version 2 of the
14 #include <linux/types.h>
15 #include <linux/integrity.h>
16 #include <crypto/sha.h>
18 /* iint cache flags */
19 #define IMA_MEASURE 0x01
20 #define IMA_MEASURED 0x02
21 #define IMA_APPRAISE 0x04
22 #define IMA_APPRAISED 0x08
23 #define IMA_COLLECTED 0x10
25 enum evm_ima_xattr_type {
26 IMA_XATTR_DIGEST = 0x01,
31 struct evm_ima_xattr_data {
33 u8 digest[SHA1_DIGEST_SIZE];
34 } __attribute__((packed));
36 /* integrity data associated with an inode */
37 struct integrity_iint_cache {
38 struct rb_node rb_node; /* rooted in integrity_iint_tree */
39 struct inode *inode; /* back pointer to inode in question */
40 u64 version; /* track inode changes */
42 u8 digest[SHA1_DIGEST_SIZE];
43 enum integrity_status ima_status;
44 enum integrity_status evm_status;
47 /* rbtree tree calls to lookup, insert, delete
48 * integrity data associated with an inode.
50 struct integrity_iint_cache *integrity_iint_insert(struct inode *inode);
51 struct integrity_iint_cache *integrity_iint_find(struct inode *inode);
53 #define INTEGRITY_KEYRING_EVM 0
54 #define INTEGRITY_KEYRING_MODULE 1
55 #define INTEGRITY_KEYRING_IMA 2
56 #define INTEGRITY_KEYRING_MAX 3
58 #ifdef CONFIG_INTEGRITY_SIGNATURE
60 int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
61 const char *digest, int digestlen);
65 static inline int integrity_digsig_verify(const unsigned int id,
66 const char *sig, int siglen,
67 const char *digest, int digestlen)
72 #endif /* CONFIG_INTEGRITY_SIGNATURE */
74 /* set during initialization */
75 extern int iint_initialized;