mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
6e837fb152
This patch creates auditing functions usable by LSM to audit security events. It provides standard dumping of FS, NET, task etc ... events (code borrowed from SELinux) and provides 2 callbacks to define LSM specific auditing, which should be flexible enough to convert SELinux too. Signed-off-by: Etienne Basset <etienne.basset@numericable.fr> Acked-by: Casey Schaufler <casey@schaufler-ca.com> cked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
/*
|
|
* 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
|
|
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;
|
|
const char *function;
|
|
/* this union contains LSM specific data */
|
|
union {
|
|
/* SMACK data */
|
|
struct smack_audit_data {
|
|
char *subject;
|
|
char *object;
|
|
char *request;
|
|
int result;
|
|
} smack_audit_data;
|
|
/* SELinux data */
|
|
struct {
|
|
u32 ssid;
|
|
u32 tsid;
|
|
u16 tclass;
|
|
u32 requested;
|
|
u32 audited;
|
|
struct av_decision *avd;
|
|
int result;
|
|
} selinux_audit_data;
|
|
} lsm_priv;
|
|
/* 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; (_d)->function = __func__; }
|
|
|
|
void common_lsm_audit(struct common_audit_data *a);
|
|
|
|
#endif
|