[mirror_ubuntu-bionic-kernel.git] / include / linux / lsm_audit.h

/*
 * Common LSM logging functions
 * Heavily borrowed from selinux/avc.h
 *
 * Author : Etienne BASSET  <etienne.basset@ensta.org>
 *
 * All credits to : Stephen Smalley, <sds@epoch.ncsc.mil>
 * 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 <asm/system.h>


/* Auxiliary data to use in generating the audit record. */
struct common_audit_data {
	char    type;
#define LSM_AUDIT_DATA_FS      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_NO_AUDIT     7
	struct task_struct *tsk;
	union 	{
		struct {
			struct path path;
			struct inode *inode;
		} fs;
		struct {
			int netif;
			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;
		} net;
		int cap;
		int ipc_id;
		struct task_struct *tsk;
#ifdef CONFIG_KEYS
		struct {
			key_serial_t key;
			char *key_desc;
		} key_struct;
#endif
	} u;
	/* this union contains LSM specific data */
	union {
#ifdef CONFIG_SECURITY_SMACK
		/* SMACK data */
		struct smack_audit_data {
			const char *function;
			char *subject;
			char *object;
			char *request;
			int result;
		} smack_audit_data;
#endif
#ifdef CONFIG_SECURITY_SELINUX
		/* SELinux data */
		struct {
			u32 ssid;
			u32 tsid;
			u16 tclass;
			u32 requested;
			u32 audited;
			u32 denied;
			struct av_decision *avd;
			int result;
		} selinux_audit_data;
#endif
	};
	/* these callback will be implemented by a specific LSM */
	void (*lsm_pre_audit)(struct audit_buffer *, void *);
	void (*lsm_post_audit)(struct audit_buffer *, void *);
};

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

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

int ipv6_skb_to_auditdata(struct sk_buff *skb,
		struct common_audit_data *ad, u8 *proto);

/* Initialize an LSM audit data structure. */
#define COMMON_AUDIT_DATA_INIT(_d, _t) \
	{ memset((_d), 0, sizeof(struct common_audit_data)); \
	 (_d)->type = LSM_AUDIT_DATA_##_t; }

void common_lsm_audit(struct common_audit_data *a);

#endif
Commit	Line	Data
6e837fb1 EB	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	#include <asm/system.h>
	25
	26
	27	/* Auxiliary data to use in generating the audit record. */
	28	struct common_audit_data {
	29	char type;
	30	#define LSM_AUDIT_DATA_FS 1
	31	#define LSM_AUDIT_DATA_NET 2
	32	#define LSM_AUDIT_DATA_CAP 3
	33	#define LSM_AUDIT_DATA_IPC 4
	34	#define LSM_AUDIT_DATA_TASK 5
	35	#define LSM_AUDIT_DATA_KEY 6
2bf49690	36	#define LSM_AUDIT_NO_AUDIT 7
6e837fb1 EB	37	struct task_struct *tsk;
	38	union {
	39	struct {
	40	struct path path;
	41	struct inode *inode;
	42	} fs;
	43	struct {
	44	int netif;
	45	struct sock *sk;
	46	u16 family;
	47	__be16 dport;
	48	__be16 sport;
	49	union {
	50	struct {
	51	__be32 daddr;
	52	__be32 saddr;
	53	} v4;
	54	struct {
	55	struct in6_addr daddr;
	56	struct in6_addr saddr;
	57	} v6;
	58	} fam;
	59	} net;
	60	int cap;
	61	int ipc_id;
	62	struct task_struct *tsk;
	63	#ifdef CONFIG_KEYS
	64	struct {
	65	key_serial_t key;
	66	char *key_desc;
	67	} key_struct;
	68	#endif
	69	} u;
6e837fb1 EB	70	/* this union contains LSM specific data */
6e837fb1 EB	71	union {
65c3f0a2	72	#ifdef CONFIG_SECURITY_SMACK
6e837fb1 EB	73	/* SMACK data */
6e837fb1 EB	74	struct smack_audit_data {
ed5215a2	75	const char *function;
6e837fb1 EB	76	char *subject;
	77	char *object;
	78	char *request;
	79	int result;
	80	} smack_audit_data;
65c3f0a2 TL	81	#endif
65c3f0a2 TL	82	#ifdef CONFIG_SECURITY_SELINUX
6e837fb1 EB	83	/* SELinux data */
	84	struct {
	85	u32 ssid;
	86	u32 tsid;
	87	u16 tclass;
	88	u32 requested;
	89	u32 audited;
2bf49690	90	u32 denied;
6e837fb1 EB	91	struct av_decision *avd;
	92	int result;
	93	} selinux_audit_data;
65c3f0a2	94	#endif
d4131ded	95	};
6e837fb1 EB	96	/* these callback will be implemented by a specific LSM */
	97	void (lsm_pre_audit)(struct audit_buffer , void *);
	98	void (lsm_post_audit)(struct audit_buffer , void *);
	99	};
	100
	101	#define v4info fam.v4
	102	#define v6info fam.v6
	103
	104	int ipv4_skb_to_auditdata(struct sk_buff *skb,
	105	struct common_audit_data ad, u8 proto);
	106
	107	int ipv6_skb_to_auditdata(struct sk_buff *skb,
	108	struct common_audit_data ad, u8 proto);
	109
	110	/* Initialize an LSM audit data structure. */
	111	#define COMMON_AUDIT_DATA_INIT(_d, _t) \
	112	{ memset((_d), 0, sizeof(struct common_audit_data)); \
ed5215a2	113	(_d)->type = LSM_AUDIT_DATA_##_t; }
6e837fb1 EB	114
	115	void common_lsm_audit(struct common_audit_data *a);
	116
	117	#endif