Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
[linux-2.6.git] / 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 <asm/system.h>
25
26
27 /* Auxiliary data to use in generating the audit record. */
28 struct common_audit_data {
29         char type;
30 #define LSM_AUDIT_DATA_FS       1
31 #define LSM_AUDIT_DATA_NET      2
32 #define LSM_AUDIT_DATA_CAP      3
33 #define LSM_AUDIT_DATA_IPC      4
34 #define LSM_AUDIT_DATA_TASK     5
35 #define LSM_AUDIT_DATA_KEY      6
36 #define LSM_AUDIT_DATA_NONE     7
37 #define LSM_AUDIT_DATA_KMOD     8
38         struct task_struct *tsk;
39         union   {
40                 struct {
41                         struct path path;
42                         struct inode *inode;
43                 } fs;
44                 struct {
45                         int netif;
46                         struct sock *sk;
47                         u16 family;
48                         __be16 dport;
49                         __be16 sport;
50                         union {
51                                 struct {
52                                         __be32 daddr;
53                                         __be32 saddr;
54                                 } v4;
55                                 struct {
56                                         struct in6_addr daddr;
57                                         struct in6_addr saddr;
58                                 } v6;
59                         } fam;
60                 } net;
61                 int cap;
62                 int ipc_id;
63                 struct task_struct *tsk;
64 #ifdef CONFIG_KEYS
65                 struct {
66                         key_serial_t key;
67                         char *key_desc;
68                 } key_struct;
69 #endif
70                 char *kmod_name;
71         } u;
72         /* this union contains LSM specific data */
73         union {
74 #ifdef CONFIG_SECURITY_SMACK
75                 /* SMACK data */
76                 struct smack_audit_data {
77                         const char *function;
78                         char *subject;
79                         char *object;
80                         char *request;
81                         int result;
82                 } smack_audit_data;
83 #endif
84 #ifdef CONFIG_SECURITY_SELINUX
85                 /* SELinux data */
86                 struct {
87                         u32 ssid;
88                         u32 tsid;
89                         u16 tclass;
90                         u32 requested;
91                         u32 audited;
92                         u32 denied;
93                         /*
94                          * auditdeny is a bit tricky and unintuitive.  See the
95                          * comments in avc.c for it's meaning and usage.
96                          */
97                         u32 auditdeny;
98                         struct av_decision *avd;
99                         int result;
100                 } selinux_audit_data;
101 #endif
102 #ifdef CONFIG_SECURITY_APPARMOR
103                 struct {
104                         int error;
105                         int op;
106                         int type;
107                         void *profile;
108                         const char *name;
109                         const char *info;
110                         union {
111                                 void *target;
112                                 struct {
113                                         long pos;
114                                         void *target;
115                                 } iface;
116                                 struct {
117                                         int rlim;
118                                         unsigned long max;
119                                 } rlim;
120                                 struct {
121                                         const char *target;
122                                         u32 request;
123                                         u32 denied;
124                                         uid_t ouid;
125                                 } fs;
126                         };
127                 } apparmor_audit_data;
128 #endif
129         };
130         /* these callback will be implemented by a specific LSM */
131         void (*lsm_pre_audit)(struct audit_buffer *, void *);
132         void (*lsm_post_audit)(struct audit_buffer *, void *);
133 };
134
135 #define v4info fam.v4
136 #define v6info fam.v6
137
138 int ipv4_skb_to_auditdata(struct sk_buff *skb,
139                 struct common_audit_data *ad, u8 *proto);
140
141 int ipv6_skb_to_auditdata(struct sk_buff *skb,
142                 struct common_audit_data *ad, u8 *proto);
143
144 /* Initialize an LSM audit data structure. */
145 #define COMMON_AUDIT_DATA_INIT(_d, _t) \
146         { memset((_d), 0, sizeof(struct common_audit_data)); \
147          (_d)->type = LSM_AUDIT_DATA_##_t; }
148
149 void common_lsm_audit(struct common_audit_data *a);
150
151 #endif