LXR linux/include/linux/lsm

   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
  27struct lsm_network_audit {
  28        int netif;
  29        const 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
  45struct lsm_ioctlop_audit {
  46        struct path path;
  47        u16 cmd;
  48};
  49
  50struct lsm_ibpkey_audit {
  51        u64 subnet_prefix;
  52        u16 pkey;
  53};
  54
  55struct lsm_ibendport_audit {
  56        const char *dev_name;
  57        u8 port;
  58};
  59
  60/* Auxiliary data to use in generating the audit record. */
  61struct 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#define LSM_AUDIT_DATA_NOTIFICATION 16
  79#define LSM_AUDIT_DATA_ANONINODE        17
  80        union   {
  81                struct path path;
  82                struct dentry *dentry;
  83                struct inode *inode;
  84                struct lsm_network_audit *net;
  85                int cap;
  86                int ipc_id;
  87                struct task_struct *tsk;
  88#ifdef CONFIG_KEYS
  89                struct {
  90                        key_serial_t key;
  91                        char *key_desc;
  92                } key_struct;
  93#endif
  94                char *kmod_name;
  95                struct lsm_ioctlop_audit *op;
  96                struct file *file;
  97                struct lsm_ibpkey_audit *ibpkey;
  98                struct lsm_ibendport_audit *ibendport;
  99                int reason;
 100                const char *anonclass;
 101        } u;
 102        /* this union contains LSM specific data */
 103        union {
 104#ifdef CONFIG_SECURITY_SMACK
 105                struct smack_audit_data *smack_audit_data;
 106#endif
 107#ifdef CONFIG_SECURITY_SELINUX
 108                struct selinux_audit_data *selinux_audit_data;
 109#endif
 110#ifdef CONFIG_SECURITY_APPARMOR
 111                struct apparmor_audit_data *apparmor_audit_data;
 112#endif
 113        }; /* per LSM data pointer union */
 114};
 115
 116#define v4info fam.v4
 117#define v6info fam.v6
 118
 119int ipv4_skb_to_auditdata(struct sk_buff *skb,
 120                struct common_audit_data *ad, u8 *proto);
 121
 122int ipv6_skb_to_auditdata(struct sk_buff *skb,
 123                struct common_audit_data *ad, u8 *proto);
 124
 125void common_lsm_audit(struct common_audit_data *a,
 126        void (*pre_audit)(struct audit_buffer *, void *),
 127        void (*post_audit)(struct audit_buffer *, void *));
 128
 129#endif
 130