51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2009-2010 IBM Corporation
|
|
*
|
|
* Authors:
|
|
* Mimi Zohar <zohar@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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/integrity.h>
|
|
#include <crypto/sha.h>
|
|
|
|
/* iint cache flags */
|
|
#define IMA_MEASURED 0x01
|
|
|
|
enum evm_ima_xattr_type {
|
|
IMA_XATTR_DIGEST = 0x01,
|
|
EVM_XATTR_HMAC,
|
|
EVM_IMA_XATTR_DIGSIG,
|
|
};
|
|
|
|
struct evm_ima_xattr_data {
|
|
u8 type;
|
|
u8 digest[SHA1_DIGEST_SIZE];
|
|
} __attribute__((packed));
|
|
|
|
/* integrity data associated with an inode */
|
|
struct integrity_iint_cache {
|
|
struct rb_node rb_node; /* rooted in integrity_iint_tree */
|
|
struct inode *inode; /* back pointer to inode in question */
|
|
u64 version; /* track inode changes */
|
|
unsigned char flags;
|
|
u8 digest[SHA1_DIGEST_SIZE];
|
|
struct mutex mutex; /* protects: version, flags, digest */
|
|
enum integrity_status evm_status;
|
|
};
|
|
|
|
/* rbtree tree calls to lookup, insert, delete
|
|
* integrity data associated with an inode.
|
|
*/
|
|
struct integrity_iint_cache *integrity_iint_insert(struct inode *inode);
|
|
struct integrity_iint_cache *integrity_iint_find(struct inode *inode);
|
|
|
|
/* set during initialization */
|
|
extern int iint_initialized;
|