1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Common LSM logging functions
4 * Heavily borrowed from selinux/avc.h
5 *
6 * Author : Etienne BASSET  <etienne.basset@ensta.org>
7 *
8 * All credits to : Stephen Smalley, <sds@tycho.nsa.gov>
9 * All BUGS to : Etienne BASSET  <etienne.basset@ensta.org>
10 */
11#ifndef _LSM_COMMON_LOGGING_
12#define _LSM_COMMON_LOGGING_
13
14#include <linux/stddef.h>
15#include <linux/errno.h>
16#include <linux/kernel.h>
17#include <linux/kdev_t.h>
18#include <linux/spinlock.h>
19#include <linux/init.h>
20#include <linux/audit.h>
21#include <linux/in6.h>
22#include <linux/path.h>
23#include <linux/key.h>
24#include <linux/skbuff.h>
25#include <rdma/ib_verbs.h>
26
27struct lsm_network_audit {
28	int netif;
29	const struct sock *sk;
30	u16 family;
31	__be16 dport;
32	__be16 sport;
33	union {
34		struct {
35			__be32 daddr;
36			__be32 saddr;
37		} v4;
38		struct {
39			struct in6_addr daddr;
40			struct in6_addr saddr;
41		} v6;
42	} fam;
43};
44
45struct lsm_ioctlop_audit {
46	struct path path;
47	u16 cmd;
48};
49
50struct lsm_ibpkey_audit {
51	u64 subnet_prefix;
52	u16 pkey;
53};
54
55struct lsm_ibendport_audit {
56	const char *dev_name;
57	u8 port;
58};
59
60/* Auxiliary data to use in generating the audit record. */
61struct common_audit_data {
62	char type;
63#define LSM_AUDIT_DATA_PATH	1
64#define LSM_AUDIT_DATA_NET	2
65#define LSM_AUDIT_DATA_CAP	3
66#define LSM_AUDIT_DATA_IPC	4
67#define LSM_AUDIT_DATA_TASK	5
68#define LSM_AUDIT_DATA_KEY	6
69#define LSM_AUDIT_DATA_NONE	7
70#define LSM_AUDIT_DATA_KMOD	8
71#define LSM_AUDIT_DATA_INODE	9
72#define LSM_AUDIT_DATA_DENTRY	10
73#define LSM_AUDIT_DATA_IOCTL_OP	11
74#define LSM_AUDIT_DATA_FILE	12
75#define LSM_AUDIT_DATA_IBPKEY	13
76#define LSM_AUDIT_DATA_IBENDPORT 14
77#define LSM_AUDIT_DATA_LOCKDOWN 15
78#define LSM_AUDIT_DATA_NOTIFICATION 16
79#define LSM_AUDIT_DATA_ANONINODE	17
80	union 	{
81		struct path path;
82		struct dentry *dentry;
83		struct inode *inode;
84		struct lsm_network_audit *net;
85		int cap;
86		int ipc_id;
87		struct task_struct *tsk;
88#ifdef CONFIG_KEYS
89		struct {
90			key_serial_t key;
91			char *key_desc;
92		} key_struct;
93#endif
94		char *kmod_name;
95		struct lsm_ioctlop_audit *op;
96		struct file *file;
97		struct lsm_ibpkey_audit *ibpkey;
98		struct lsm_ibendport_audit *ibendport;
99		int reason;
100		const char *anonclass;
101	} u;
102	/* this union contains LSM specific data */
103	union {
104#ifdef CONFIG_SECURITY_SMACK
105		struct smack_audit_data *smack_audit_data;
106#endif
107#ifdef CONFIG_SECURITY_SELINUX
108		struct selinux_audit_data *selinux_audit_data;
109#endif
110#ifdef CONFIG_SECURITY_APPARMOR
111		struct apparmor_audit_data *apparmor_audit_data;
112#endif
113	}; /* per LSM data pointer union */
114};
115
116#define v4info fam.v4
117#define v6info fam.v6
118
119int ipv4_skb_to_auditdata(struct sk_buff *skb,
120		struct common_audit_data *ad, u8 *proto);
121
122int ipv6_skb_to_auditdata(struct sk_buff *skb,
123		struct common_audit_data *ad, u8 *proto);
124
125void common_lsm_audit(struct common_audit_data *a,
126	void (*pre_audit)(struct audit_buffer *, void *),
127	void (*post_audit)(struct audit_buffer *, void *));
128
129#endif
130