security/selinux/include/audit.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * SELinux support for the Audit LSM hooks
   4  *
   5  * Author: James Morris <jmorris@redhat.com>
   6  *
   7  * Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>
   8  * Copyright (C) 2006 Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
   9  * Copyright (C) 2006 IBM Corporation, Timothy R. Chavez <tinytim@us.ibm.com>
  10  */
  11
  12 #ifndef _SELINUX_AUDIT_H
  13 #define _SELINUX_AUDIT_H
  14
  15 /**
  16  *      selinux_audit_rule_init - alloc/init an selinux audit rule structure.
  17  *      @field: the field this rule refers to
  18  *      @op: the operater the rule uses
  19  *      @rulestr: the text "target" of the rule
  20  *      @rule: pointer to the new rule structure returned via this
  21  *
  22  *      Returns 0 if successful, -errno if not.  On success, the rule structure
  23  *      will be allocated internally.  The caller must free this structure with
  24  *      selinux_audit_rule_free() after use.
  25  */
  26 int selinux_audit_rule_init(u32 field, u32 op, char *rulestr, void **rule);
  27
  28 /**
  29  *      selinux_audit_rule_free - free an selinux audit rule structure.
  30  *      @rule: pointer to the audit rule to be freed
  31  *
  32  *      This will free all memory associated with the given rule.
  33  *      If @rule is NULL, no operation is performed.
  34  */
  35 void selinux_audit_rule_free(void *rule);
  36
  37 /**
  38  *      selinux_audit_rule_match - determine if a context ID matches a rule.
  39  *      @sid: the context ID to check
  40  *      @field: the field this rule refers to
  41  *      @op: the operater the rule uses
  42  *      @rule: pointer to the audit rule to check against
  43  *
  44  *      Returns 1 if the context id matches the rule, 0 if it does not, and
  45  *      -errno on failure.
  46  */
  47 int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *rule);
  48
  49 /**
  50  *      selinux_audit_rule_known - check to see if rule contains selinux fields.
  51  *      @rule: rule to be checked
  52  *      Returns 1 if there are selinux fields specified in the rule, 0 otherwise.
  53  */
  54 int selinux_audit_rule_known(struct audit_krule *krule);
  55
  56 #endif /* _SELINUX_AUDIT_H */
  57