include/linux/lsm_audit.h

   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 <rdma/ib_verbs.h>
  25
  26 struct lsm_network_audit {
  27         int netif;
  28         struct sock *sk;
  29         u16 family;
  30         __be16 dport;
  31         __be16 sport;
  32         union {
  33                 struct {
  34                         __be32 daddr;
  35                         __be32 saddr;
  36                 } v4;
  37                 struct {
  38                         struct in6_addr daddr;
  39                         struct in6_addr saddr;
  40                 } v6;
  41         } fam;
  42 };
  43
  44 struct lsm_ioctlop_audit {
  45         struct path path;
  46         u16 cmd;
  47 };
  48
  49 struct lsm_ibpkey_audit {
  50         u64     subnet_prefix;
  51         u16     pkey;
  52 };
  53
  54 struct lsm_ibendport_audit {
  55         char    dev_name[IB_DEVICE_NAME_MAX];
  56         u8      port;
  57 };
  58
  59 /* Auxiliary data to use in generating the audit record. */
  60 struct common_audit_data {
  61         char type;
  62 #define LSM_AUDIT_DATA_PATH     1
  63 #define LSM_AUDIT_DATA_NET      2
  64 #define LSM_AUDIT_DATA_CAP      3
  65 #define LSM_AUDIT_DATA_IPC      4
  66 #define LSM_AUDIT_DATA_TASK     5
  67 #define LSM_AUDIT_DATA_KEY      6
  68 #define LSM_AUDIT_DATA_NONE     7
  69 #define LSM_AUDIT_DATA_KMOD     8
  70 #define LSM_AUDIT_DATA_INODE    9
  71 #define LSM_AUDIT_DATA_DENTRY   10
  72 #define LSM_AUDIT_DATA_IOCTL_OP 11
  73 #define LSM_AUDIT_DATA_FILE     12
  74 #define LSM_AUDIT_DATA_IBPKEY   13
  75 #define LSM_AUDIT_DATA_IBENDPORT 14
  76         union   {
  77                 struct path path;
  78                 struct dentry *dentry;
  79                 struct inode *inode;
  80                 struct lsm_network_audit *net;
  81                 int cap;
  82                 int ipc_id;
  83                 struct task_struct *tsk;
  84 #ifdef CONFIG_KEYS
  85                 struct {
  86                         key_serial_t key;
  87                         char *key_desc;
  88                 } key_struct;
  89 #endif
  90                 char *kmod_name;
  91                 struct lsm_ioctlop_audit *op;
  92                 struct file *file;
  93                 struct lsm_ibpkey_audit *ibpkey;
  94                 struct lsm_ibendport_audit *ibendport;
  95         } u;
  96         /* this union contains LSM specific data */
  97         union {
  98 #ifdef CONFIG_SECURITY_SMACK
  99                 struct smack_audit_data *smack_audit_data;
 100 #endif
 101 #ifdef CONFIG_SECURITY_SELINUX
 102                 struct selinux_audit_data *selinux_audit_data;
 103 #endif
 104 #ifdef CONFIG_SECURITY_APPARMOR
 105                 struct apparmor_audit_data *apparmor_audit_data;
 106 #endif
 107         }; /* per LSM data pointer union */
 108 };
 109
 110 #define v4info fam.v4
 111 #define v6info fam.v6
 112
 113 int ipv4_skb_to_auditdata(struct sk_buff *skb,
 114                 struct common_audit_data *ad, u8 *proto);
 115
 116 int ipv6_skb_to_auditdata(struct sk_buff *skb,
 117                 struct common_audit_data *ad, u8 *proto);
 118
 119 void common_lsm_audit(struct common_audit_data *a,
 120         void (*pre_audit)(struct audit_buffer *, void *),
 121         void (*post_audit)(struct audit_buffer *, void *));
 122
 123 #endif