1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2005-2010 IBM Corporation
6 * Mimi Zohar <zohar@us.ibm.com>
7 * Kylene Hall <kjhall@us.ibm.com>
12 #ifndef __INTEGRITY_EVM_H
13 #define __INTEGRITY_EVM_H
15 #include <linux/xattr.h>
16 #include <linux/security.h>
18 #include "../integrity.h"
20 #define EVM_INIT_HMAC 0x0001
21 #define EVM_INIT_X509 0x0002
22 #define EVM_ALLOW_METADATA_WRITES 0x0004
23 #define EVM_SETUP_COMPLETE 0x80000000 /* userland has signaled key load */
25 #define EVM_KEY_MASK (EVM_INIT_HMAC | EVM_INIT_X509)
26 #define EVM_INIT_MASK (EVM_INIT_HMAC | EVM_INIT_X509 | EVM_SETUP_COMPLETE | \
27 EVM_ALLOW_METADATA_WRITES)
30 struct list_head list;
35 extern int evm_initialized;
37 #define EVM_ATTR_FSUUID 0x0001
39 extern int evm_hmac_attrs;
41 /* List of EVM protected security xattrs */
42 extern struct list_head evm_config_xattrnames;
45 struct ima_digest_data hdr;
46 char digest[IMA_MAX_DIGEST_SIZE];
49 int evm_init_key(void);
50 int evm_update_evmxattr(struct dentry *dentry,
51 const char *req_xattr_name,
52 const char *req_xattr_value,
53 size_t req_xattr_value_len);
54 int evm_calc_hmac(struct dentry *dentry, const char *req_xattr_name,
55 const char *req_xattr_value,
56 size_t req_xattr_value_len, struct evm_digest *data);
57 int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name,
58 const char *req_xattr_value,
59 size_t req_xattr_value_len, char type,
60 struct evm_digest *data);
61 int evm_init_hmac(struct inode *inode, const struct xattr *xattr,
63 int evm_init_secfs(void);