1/*
2 * Common LSM logging functions
3 * Heavily borrowed from selinux/avc.h
4 *
5 * Author : Etienne BASSET  <etienne.basset@ensta.org>
6 *
7 * All credits to : Stephen Smalley, <sds@epoch.ncsc.mil>
8 * All BUGS to : Etienne BASSET  <etienne.basset@ensta.org>
9 */
10#ifndef _LSM_COMMON_LOGGING_
11#define _LSM_COMMON_LOGGING_
12
13#include <linux/stddef.h>
14#include <linux/errno.h>
15#include <linux/kernel.h>
16#include <linux/kdev_t.h>
17#include <linux/spinlock.h>
18#include <linux/init.h>
19#include <linux/audit.h>
20#include <linux/in6.h>
21#include <linux/path.h>
22#include <linux/key.h>
23#include <linux/skbuff.h>
24
25struct lsm_network_audit {
26	int netif;
27	struct sock *sk;
28	u16 family;
29	__be16 dport;
30	__be16 sport;
31	union {
32		struct {
33			__be32 daddr;
34			__be32 saddr;
35		} v4;
36		struct {
37			struct in6_addr daddr;
38			struct in6_addr saddr;
39		} v6;
40	} fam;
41};
42
43/* Auxiliary data to use in generating the audit record. */
44struct common_audit_data {
45	char type;
46#define LSM_AUDIT_DATA_PATH	1
47#define LSM_AUDIT_DATA_NET	2
48#define LSM_AUDIT_DATA_CAP	3
49#define LSM_AUDIT_DATA_IPC	4
50#define LSM_AUDIT_DATA_TASK	5
51#define LSM_AUDIT_DATA_KEY	6
52#define LSM_AUDIT_DATA_NONE	7
53#define LSM_AUDIT_DATA_KMOD	8
54#define LSM_AUDIT_DATA_INODE	9
55#define LSM_AUDIT_DATA_DENTRY	10
56	union 	{
57		struct path path;
58		struct dentry *dentry;
59		struct inode *inode;
60		struct lsm_network_audit *net;
61		int cap;
62		int ipc_id;
63		struct task_struct *tsk;
64#ifdef CONFIG_KEYS
65		struct {
66			key_serial_t key;
67			char *key_desc;
68		} key_struct;
69#endif
70		char *kmod_name;
71	} u;
72	/* this union contains LSM specific data */
73	union {
74#ifdef CONFIG_SECURITY_SMACK
75		struct smack_audit_data *smack_audit_data;
76#endif
77#ifdef CONFIG_SECURITY_SELINUX
78		struct selinux_audit_data *selinux_audit_data;
79#endif
80#ifdef CONFIG_SECURITY_APPARMOR
81		struct apparmor_audit_data *apparmor_audit_data;
82#endif
83	}; /* per LSM data pointer union */
84};
85
86#define v4info fam.v4
87#define v6info fam.v6
88
89int ipv4_skb_to_auditdata(struct sk_buff *skb,
90		struct common_audit_data *ad, u8 *proto);
91
92int ipv6_skb_to_auditdata(struct sk_buff *skb,
93		struct common_audit_data *ad, u8 *proto);
94
95void common_lsm_audit(struct common_audit_data *a,
96	void (*pre_audit)(struct audit_buffer *, void *),
97	void (*post_audit)(struct audit_buffer *, void *));
98
99#endif
100