/* * 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