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 125