include/linux/lsm_audit.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Common LSM logging functions
   4  * Heavily borrowed from selinux/avc.h
   5  *
   6  * Author : Etienne BASSET  <etienne.basset@ensta.org>
   7  *
   8  * All credits to : Stephen Smalley, <sds@tycho.nsa.gov>
   9  * All BUGS to : Etienne BASSET  <etienne.basset@ensta.org>
  10  */
  11 #ifndef _LSM_COMMON_LOGGING_
  12 #define _LSM_COMMON_LOGGING_
  13
  14 #include <linux/stddef.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/kdev_t.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/init.h>
  20 #include <linux/audit.h>
  21 #include <linux/in6.h>
  22 #include <linux/path.h>
  23 #include <linux/key.h>
  24 #include <linux/skbuff.h>
  25 #include <rdma/ib_verbs.h>
  26
  27 struct lsm_network_audit {
  28         int netif;
  29         struct sock *sk;
  30         u16 family;
  31         __be16 dport;
  32         __be16 sport;
  33         union {
  34                 struct {
  35                         __be32 daddr;
  36                         __be32 saddr;
  37                 } v4;
  38                 struct {
  39                         struct in6_addr daddr;
  40                         struct in6_addr saddr;
  41                 } v6;
  42         } fam;
  43 };
  44
  45 struct lsm_ioctlop_audit {
  46         struct path path;
  47         u16 cmd;
  48 };
  49
  50 struct lsm_ibpkey_audit {
  51         u64     subnet_prefix;
  52         u16     pkey;
  53 };
  54
  55 struct lsm_ibendport_audit {
  56         char    dev_name[IB_DEVICE_NAME_MAX];
  57         u8      port;
  58 };
  59
  60 /* Auxiliary data to use in generating the audit record. */
  61 struct common_audit_data {
  62         char type;
  63 #define LSM_AUDIT_DATA_PATH     1
  64 #define LSM_AUDIT_DATA_NET      2
  65 #define LSM_AUDIT_DATA_CAP      3
  66 #define LSM_AUDIT_DATA_IPC      4
  67 #define LSM_AUDIT_DATA_TASK     5
  68 #define LSM_AUDIT_DATA_KEY      6
  69 #define LSM_AUDIT_DATA_NONE     7
  70 #define LSM_AUDIT_DATA_KMOD     8
  71 #define LSM_AUDIT_DATA_INODE    9
  72 #define LSM_AUDIT_DATA_DENTRY   10
  73 #define LSM_AUDIT_DATA_IOCTL_OP 11
  74 #define LSM_AUDIT_DATA_FILE     12
  75 #define LSM_AUDIT_DATA_IBPKEY   13
  76 #define LSM_AUDIT_DATA_IBENDPORT 14
  77 #define LSM_AUDIT_DATA_LOCKDOWN 15
  78         union   {
  79                 struct path path;
  80                 struct dentry *dentry;
  81                 struct inode *inode;
  82                 struct lsm_network_audit *net;
  83                 int cap;
  84                 int ipc_id;
  85                 struct task_struct *tsk;
  86 #ifdef CONFIG_KEYS
  87                 struct {
  88                         key_serial_t key;
  89                         char *key_desc;
  90                 } key_struct;
  91 #endif
  92                 char *kmod_name;
  93                 struct lsm_ioctlop_audit *op;
  94                 struct file *file;
  95                 struct lsm_ibpkey_audit *ibpkey;
  96                 struct lsm_ibendport_audit *ibendport;
  97                 int reason;
  98         } u;
  99         /* this union contains LSM specific data */
 100         union {
 101 #ifdef CONFIG_SECURITY_SMACK
 102                 struct smack_audit_data *smack_audit_data;
 103 #endif
 104 #ifdef CONFIG_SECURITY_SELINUX
 105                 struct selinux_audit_data *selinux_audit_data;
 106 #endif
 107 #ifdef CONFIG_SECURITY_APPARMOR
 108                 struct apparmor_audit_data *apparmor_audit_data;
 109 #endif
 110         }; /* per LSM data pointer union */
 111 };
 112
 113 #define v4info fam.v4
 114 #define v6info fam.v6
 115
 116 int ipv4_skb_to_auditdata(struct sk_buff *skb,
 117                 struct common_audit_data *ad, u8 *proto);
 118
 119 int ipv6_skb_to_auditdata(struct sk_buff *skb,
 120                 struct common_audit_data *ad, u8 *proto);
 121
 122 void common_lsm_audit(struct common_audit_data *a,
 123         void (*pre_audit)(struct audit_buffer *, void *),
 124         void (*post_audit)(struct audit_buffer *, void *));
 125
 126 #endif