68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2005-2010 IBM Corporation
|
||
|
|
*
|
||
|
|
* Authors:
|
||
|
|
* Mimi Zohar <zohar@us.ibm.com>
|
||
|
|
* Kylene Hall <kjhall@us.ibm.com>
|
||
|
|
*
|
||
|
|
* File: evm.h
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __INTEGRITY_EVM_H
|
||
|
|
#define __INTEGRITY_EVM_H
|
||
|
|
|
||
|
|
#include <linux/xattr.h>
|
||
|
|
#include <linux/security.h>
|
||
|
|
|
||
|
|
#include "../integrity.h"
|
||
|
|
|
||
|
|
#define EVM_INIT_HMAC 0x0001
|
||
|
|
#define EVM_INIT_X509 0x0002
|
||
|
|
#define EVM_ALLOW_METADATA_WRITES 0x0004
|
||
|
|
#define EVM_SETUP_COMPLETE 0x80000000 /* userland has signaled key load */
|
||
|
|
|
||
|
|
#define EVM_KEY_MASK (EVM_INIT_HMAC | EVM_INIT_X509)
|
||
|
|
#define EVM_INIT_MASK (EVM_INIT_HMAC | EVM_INIT_X509 | EVM_SETUP_COMPLETE | \
|
||
|
|
EVM_ALLOW_METADATA_WRITES)
|
||
|
|
|
||
|
|
struct xattr_list {
|
||
|
|
struct list_head list;
|
||
|
|
char *name;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern int evm_initialized;
|
||
|
|
|
||
|
|
#define EVM_ATTR_FSUUID 0x0001
|
||
|
|
|
||
|
|
extern int evm_hmac_attrs;
|
||
|
|
|
||
|
|
extern struct crypto_shash *hmac_tfm;
|
||
|
|
extern struct crypto_shash *hash_tfm;
|
||
|
|
|
||
|
|
/* List of EVM protected security xattrs */
|
||
|
|
extern struct list_head evm_config_xattrnames;
|
||
|
|
|
||
|
|
struct evm_digest {
|
||
|
|
struct ima_digest_data hdr;
|
||
|
|
char digest[IMA_MAX_DIGEST_SIZE];
|
||
|
|
} __packed;
|
||
|
|
|
||
|
|
int evm_init_key(void);
|
||
|
|
int evm_update_evmxattr(struct dentry *dentry,
|
||
|
|
const char *req_xattr_name,
|
||
|
|
const char *req_xattr_value,
|
||
|
|
size_t req_xattr_value_len);
|
||
|
|
int evm_calc_hmac(struct dentry *dentry, const char *req_xattr_name,
|
||
|
|
const char *req_xattr_value,
|
||
|
|
size_t req_xattr_value_len, struct evm_digest *data);
|
||
|
|
int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name,
|
||
|
|
const char *req_xattr_value,
|
||
|
|
size_t req_xattr_value_len, char type,
|
||
|
|
struct evm_digest *data);
|
||
|
|
int evm_init_hmac(struct inode *inode, const struct xattr *xattr,
|
||
|
|
char *hmac_val);
|
||
|
|
int evm_init_secfs(void);
|
||
|
|
|
||
|
|
#endif
|