/*
* Common LSM logging functions
* Heavily borrowed from selinux/avc.h
*
* Author : Etienne BASSET <[email protected]>
*
* All credits to : Stephen Smalley, <[email protected]>
* All BUGS to : Etienne BASSET <[email protected]>
*/
#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>

struct lsm_network_audit {
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;
};

/* 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
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;
} 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

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);

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

#endif