| 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 | union { |
| 78 | struct path path; |
| 79 | struct dentry *dentry; |
| 80 | struct inode *inode; |
| 81 | struct lsm_network_audit *net; |
| 82 | int cap; |
| 83 | int ipc_id; |
| 84 | struct task_struct *tsk; |
| 85 | #ifdef CONFIG_KEYS |
| 86 | struct { |
| 87 | key_serial_t key; |
| 88 | char *key_desc; |
| 89 | } key_struct; |
| 90 | #endif |
| 91 | char *kmod_name; |
| 92 | struct lsm_ioctlop_audit *op; |
| 93 | struct file *file; |
| 94 | struct lsm_ibpkey_audit *ibpkey; |
| 95 | struct lsm_ibendport_audit *ibendport; |
| 96 | } u; |
| 97 | /* this union contains LSM specific data */ |
| 98 | union { |
| 99 | #ifdef CONFIG_SECURITY_SMACK |
| 100 | struct smack_audit_data *smack_audit_data; |
| 101 | #endif |
| 102 | #ifdef CONFIG_SECURITY_SELINUX |
| 103 | struct selinux_audit_data *selinux_audit_data; |
| 104 | #endif |
| 105 | #ifdef CONFIG_SECURITY_APPARMOR |
| 106 | struct apparmor_audit_data *apparmor_audit_data; |
| 107 | #endif |
| 108 | }; /* per LSM data pointer union */ |
| 109 | }; |
| 110 | |
| 111 | #define v4info fam.v4 |
| 112 | #define v6info fam.v6 |
| 113 | |
| 114 | int ipv4_skb_to_auditdata(struct sk_buff *skb, |
| 115 | struct common_audit_data *ad, u8 *proto); |
| 116 | |
| 117 | int ipv6_skb_to_auditdata(struct sk_buff *skb, |
| 118 | struct common_audit_data *ad, u8 *proto); |
| 119 | |
| 120 | void common_lsm_audit(struct common_audit_data *a, |
| 121 | void (*pre_audit)(struct audit_buffer *, void *), |
| 122 | void (*post_audit)(struct audit_buffer *, void *)); |
| 123 | |
| 124 | #endif |