[linux-block.git] / include / linux / lsm_audit.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Common LSM logging functions
 * Heavily borrowed from selinux/avc.h
 *
 * Author : Etienne BASSET  <etienne.basset@ensta.org>
 *
 * All credits to : Stephen Smalley
 * All BUGS to : Etienne BASSET  <etienne.basset@ensta.org>
 */
#ifndef _LSM_COMMON_LOGGING_
#define _LSM_COMMON_LOGGING_

#include <linux/stddef.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/audit.h>
#include <linux/in6.h>
#include <linux/path.h>
#include <linux/key.h>
#include <linux/skbuff.h>
#include <rdma/ib_verbs.h>

struct lsm_network_audit {
	int netif;
	const struct sock *sk;
	u16 family;
	__be16 dport;
	__be16 sport;
	union {
		struct {
			__be32 daddr;
			__be32 saddr;
		} v4;
		struct {
			struct in6_addr daddr;
			struct in6_addr saddr;
		} v6;
	} fam;
};

struct lsm_ioctlop_audit {
	struct path path;
	u16 cmd;
};

struct lsm_ibpkey_audit {
	u64 subnet_prefix;
	u16 pkey;
};

struct lsm_ibendport_audit {
	const char *dev_name;
	u8 port;
};

/* Auxiliary data to use in generating the audit record. */
struct common_audit_data {
	char type;
#define LSM_AUDIT_DATA_PATH	1
#define LSM_AUDIT_DATA_NET	2
#define LSM_AUDIT_DATA_CAP	3
#define LSM_AUDIT_DATA_IPC	4
#define LSM_AUDIT_DATA_TASK	5
#define LSM_AUDIT_DATA_KEY	6
#define LSM_AUDIT_DATA_NONE	7
#define LSM_AUDIT_DATA_KMOD	8
#define LSM_AUDIT_DATA_INODE	9
#define LSM_AUDIT_DATA_DENTRY	10
#define LSM_AUDIT_DATA_IOCTL_OP	11
#define LSM_AUDIT_DATA_FILE	12
#define LSM_AUDIT_DATA_IBPKEY	13
#define LSM_AUDIT_DATA_IBENDPORT 14
#define LSM_AUDIT_DATA_LOCKDOWN 15
#define LSM_AUDIT_DATA_NOTIFICATION 16
#define LSM_AUDIT_DATA_ANONINODE	17
#define LSM_AUDIT_DATA_NLMSGTYPE	18
	union 	{
		struct path path;
		struct dentry *dentry;
		struct inode *inode;
		struct lsm_network_audit *net;
		int cap;
		int ipc_id;
		struct task_struct *tsk;
#ifdef CONFIG_KEYS
		struct {
			key_serial_t key;
			char *key_desc;
		} key_struct;
#endif
		char *kmod_name;
		struct lsm_ioctlop_audit *op;
		struct file *file;
		struct lsm_ibpkey_audit *ibpkey;
		struct lsm_ibendport_audit *ibendport;
		int reason;
		const char *anonclass;
		u16 nlmsg_type;
	} u;
	/* this union contains LSM specific data */
	union {
#ifdef CONFIG_SECURITY_SMACK
		struct smack_audit_data *smack_audit_data;
#endif
#ifdef CONFIG_SECURITY_SELINUX
		struct selinux_audit_data *selinux_audit_data;
#endif
#ifdef CONFIG_SECURITY_APPARMOR
		struct apparmor_audit_data *apparmor_audit_data;
#endif
	}; /* per LSM data pointer union */
};

#define v4info fam.v4
#define v6info fam.v6

#ifdef CONFIG_AUDIT

int ipv4_skb_to_auditdata(struct sk_buff *skb,
		struct common_audit_data *ad, u8 *proto);

#if IS_ENABLED(CONFIG_IPV6)
int ipv6_skb_to_auditdata(struct sk_buff *skb,
		struct common_audit_data *ad, u8 *proto);
#endif /* IS_ENABLED(CONFIG_IPV6) */

void common_lsm_audit(struct common_audit_data *a,
	void (*pre_audit)(struct audit_buffer *, void *),
	void (*post_audit)(struct audit_buffer *, void *));

void audit_log_lsm_data(struct audit_buffer *ab,
			const struct common_audit_data *a);

#else /* CONFIG_AUDIT */

static inline void common_lsm_audit(struct common_audit_data *a,
	void (*pre_audit)(struct audit_buffer *, void *),
	void (*post_audit)(struct audit_buffer *, void *))
{
}

static inline void audit_log_lsm_data(struct audit_buffer *ab,
			const struct common_audit_data *a)
{
}

#endif /* CONFIG_AUDIT */

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
6e837fb1 EB	2	/*
	3	* Common LSM logging functions
	4	* Heavily borrowed from selinux/avc.h
	5	*
	6	* Author : Etienne BASSET <etienne.basset@ensta.org>
	7	*
9da4f4f9	8	* All credits to : Stephen Smalley
6e837fb1 EB	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>
ab861dfc	25	#include <rdma/ib_verbs.h>
6e837fb1	26
48c62af6 EP	27	struct lsm_network_audit {
48c62af6 EP	28	int netif;
41dd9596	29	const struct sock *sk;
48c62af6 EP	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	};
6e837fb1	44
671a2781 JVS	45	struct lsm_ioctlop_audit {
	46	struct path path;
	47	u16 cmd;
	48	};
	49
cfc4d882	50	struct lsm_ibpkey_audit {
869cbeef OM	51	u64 subnet_prefix;
869cbeef OM	52	u16 pkey;
cfc4d882 DJ	53	};
cfc4d882 DJ	54
ab861dfc	55	struct lsm_ibendport_audit {
869cbeef OM	56	const char *dev_name;
869cbeef OM	57	u8 port;
ab861dfc DJ	58	};
ab861dfc DJ	59
6e837fb1 EB	60	/* Auxiliary data to use in generating the audit record. */
6e837fb1 EB	61	struct common_audit_data {
dd8dbf2e	62	char type;
f48b7399	63	#define LSM_AUDIT_DATA_PATH 1
dd8dbf2e EP	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
cb84aa9b	69	#define LSM_AUDIT_DATA_NONE 7
dd8dbf2e	70	#define LSM_AUDIT_DATA_KMOD 8
f48b7399	71	#define LSM_AUDIT_DATA_INODE 9
a269434d	72	#define LSM_AUDIT_DATA_DENTRY 10
671a2781	73	#define LSM_AUDIT_DATA_IOCTL_OP 11
43af5de7	74	#define LSM_AUDIT_DATA_FILE 12
cfc4d882	75	#define LSM_AUDIT_DATA_IBPKEY 13
ab861dfc	76	#define LSM_AUDIT_DATA_IBENDPORT 14
59438b46	77	#define LSM_AUDIT_DATA_LOCKDOWN 15
a8478a60	78	#define LSM_AUDIT_DATA_NOTIFICATION 16
c29722fa	79	#define LSM_AUDIT_DATA_ANONINODE 17
2ef6fc99	80	#define LSM_AUDIT_DATA_NLMSGTYPE 18
6e837fb1	81	union {
f48b7399	82	struct path path;
a269434d	83	struct dentry *dentry;
f48b7399	84	struct inode *inode;
48c62af6	85	struct lsm_network_audit *net;
6e837fb1 EB	86	int cap;
	87	int ipc_id;
	88	struct task_struct *tsk;
	89	#ifdef CONFIG_KEYS
	90	struct {
	91	key_serial_t key;
	92	char *key_desc;
	93	} key_struct;
	94	#endif
dd8dbf2e	95	char *kmod_name;
671a2781	96	struct lsm_ioctlop_audit *op;
43af5de7	97	struct file *file;
cfc4d882	98	struct lsm_ibpkey_audit *ibpkey;
ab861dfc	99	struct lsm_ibendport_audit *ibendport;
59438b46	100	int reason;
c29722fa	101	const char *anonclass;
2ef6fc99	102	u16 nlmsg_type;
6e837fb1	103	} u;
6e837fb1 EB	104	/* this union contains LSM specific data */
6e837fb1 EB	105	union {
65c3f0a2	106	#ifdef CONFIG_SECURITY_SMACK
3b3b0e4f	107	struct smack_audit_data *smack_audit_data;
65c3f0a2 TL	108	#endif
65c3f0a2 TL	109	#ifdef CONFIG_SECURITY_SELINUX
3b3b0e4f	110	struct selinux_audit_data *selinux_audit_data;
67012e82 JJ	111	#endif
67012e82 JJ	112	#ifdef CONFIG_SECURITY_APPARMOR
3b3b0e4f	113	struct apparmor_audit_data *apparmor_audit_data;
65c3f0a2	114	#endif
3b3b0e4f	115	}; /* per LSM data pointer union */
6e837fb1 EB	116	};
	117
	118	#define v4info fam.v4
	119	#define v6info fam.v6
	120
7ccbe076 MS	121	#ifdef CONFIG_AUDIT
7ccbe076 MS	122
6e837fb1 EB	123	int ipv4_skb_to_auditdata(struct sk_buff *skb,
	124	struct common_audit_data ad, u8 proto);
	125
7ccbe076	126	#if IS_ENABLED(CONFIG_IPV6)
6e837fb1 EB	127	int ipv6_skb_to_auditdata(struct sk_buff *skb,
6e837fb1 EB	128	struct common_audit_data ad, u8 proto);
7ccbe076	129	#endif /* IS_ENABLED(CONFIG_IPV6) */
6e837fb1	130
b61c37f5 LT	131	void common_lsm_audit(struct common_audit_data *a,
	132	void (pre_audit)(struct audit_buffer , void *),
	133	void (post_audit)(struct audit_buffer , void *));
6e837fb1	134
9b08a166 MS	135	void audit_log_lsm_data(struct audit_buffer *ab,
	136	const struct common_audit_data *a);
	137
7ccbe076 MS	138	#else /* CONFIG_AUDIT */
	139
	140	static inline void common_lsm_audit(struct common_audit_data *a,
	141	void (pre_audit)(struct audit_buffer , void *),
	142	void (post_audit)(struct audit_buffer , void *))
	143	{
	144	}
	145
9b08a166 MS	146	static inline void audit_log_lsm_data(struct audit_buffer *ab,
	147	const struct common_audit_data *a)
	148	{
	149	}
	150
7ccbe076 MS	151	#endif /* CONFIG_AUDIT */
7ccbe076 MS	152
6e837fb1	153	#endif