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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* SELinux support for the Audit LSM hooks
*
* Author: James Morris <jmorris@redhat.com>
*
* Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>
* Copyright (C) 2006 Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
* Copyright (C) 2006 IBM Corporation, Timothy R. Chavez <tinytim@us.ibm.com>
*/
#ifndef _SELINUX_AUDIT_H
#define _SELINUX_AUDIT_H
#include <linux/audit.h>
#include <linux/types.h>
/**
* selinux_audit_rule_init - alloc/init an selinux audit rule structure.
* @field: the field this rule refers to
* @op: the operator the rule uses
* @rulestr: the text "target" of the rule
* @rule: pointer to the new rule structure returned via this
* @gfp: GFP flag used for kmalloc
*
* Returns 0 if successful, -errno if not. On success, the rule structure
* will be allocated internally. The caller must free this structure with
* selinux_audit_rule_free() after use.
*/
int selinux_audit_rule_init(u32 field, u32 op, char *rulestr, void **rule,
gfp_t gfp);
/**
* selinux_audit_rule_free - free an selinux audit rule structure.
* @rule: pointer to the audit rule to be freed
*
* This will free all memory associated with the given rule.
* If @rule is NULL, no operation is performed.
*/
void selinux_audit_rule_free(void *rule);
/**
* selinux_audit_rule_match - determine if a context ID matches a rule.
* @sid: the context ID to check
* @field: the field this rule refers to
* @op: the operator the rule uses
* @rule: pointer to the audit rule to check against
*
* Returns 1 if the context id matches the rule, 0 if it does not, and
* -errno on failure.
*/
int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *rule);
/**
* selinux_audit_rule_known - check to see if rule contains selinux fields.
* @rule: rule to be checked
* Returns 1 if there are selinux fields specified in the rule, 0 otherwise.
*/
int selinux_audit_rule_known(struct audit_krule *rule);
#endif /* _SELINUX_AUDIT_H */
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