linux/security/integrity/evm/evm.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2005-2010 IBM Corporation
 *
 * Authors:
 * Mimi Zohar <[email protected]>
 * Kylene Hall <[email protected]>
 *
 * 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 …
#define EVM_INIT_X509 …
#define EVM_ALLOW_METADATA_WRITES …
#define EVM_SETUP_COMPLETE …

#define EVM_KEY_MASK …
#define EVM_INIT_MASK …

struct xattr_list { … };

#define EVM_NEW_FILE …
#define EVM_IMMUTABLE_DIGSIG …

/* EVM integrity metadata associated with an inode */
struct evm_iint_cache { … };

extern struct lsm_blob_sizes evm_blob_sizes;

static inline struct evm_iint_cache *evm_iint_inode(const struct inode *inode)
{ … }

extern int evm_initialized;

#define EVM_ATTR_FSUUID …

extern int evm_hmac_attrs;

/* List of EVM protected security xattrs */
extern struct list_head evm_config_xattrnames;

struct evm_digest { … } __packed;

int evm_protected_xattr(const char *req_xattr_name);

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,
		  struct evm_iint_cache *iint);
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, struct evm_iint_cache *iint);
int evm_init_hmac(struct inode *inode, const struct xattr *xattrs,
		  char *hmac_val);
int evm_init_secfs(void);

#endif