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netlabel: Add functionality to set the security attributes of a packet
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1 /*
2  * SELinux interface to the NetLabel subsystem
3  *
4  * Author : Paul Moore <paul.moore@hp.com>
5  *
6  */
7
8 /*
9  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
10  *
11  * This program is free software;  you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
19  * the GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program;  if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24  *
25  */
26
27 #ifndef _SELINUX_NETLABEL_H_
28 #define _SELINUX_NETLABEL_H_
29
30 #include <linux/types.h>
31 #include <linux/fs.h>
32 #include <linux/net.h>
33 #include <linux/skbuff.h>
34 #include <net/sock.h>
35
36 #include "avc.h"
37 #include "objsec.h"
38
39 #ifdef CONFIG_NETLABEL
40 void selinux_netlbl_cache_invalidate(void);
41
42 void selinux_netlbl_err(struct sk_buff *skb, int error, int gateway);
43
44 void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec,
45                                       int family);
46
47 int selinux_netlbl_skbuff_getsid(struct sk_buff *skb,
48                                  u16 family,
49                                  u32 *type,
50                                  u32 *sid);
51 int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
52                                  u16 family,
53                                  u32 sid);
54
55 void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock);
56 int selinux_netlbl_socket_post_create(struct socket *sock);
57 int selinux_netlbl_inode_permission(struct inode *inode, int mask);
58 int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
59                                 struct sk_buff *skb,
60                                 u16 family,
61                                 struct avc_audit_data *ad);
62 int selinux_netlbl_socket_setsockopt(struct socket *sock,
63                                      int level,
64                                      int optname);
65 #else
66 static inline void selinux_netlbl_cache_invalidate(void)
67 {
68         return;
69 }
70
71 static inline void selinux_netlbl_err(struct sk_buff *skb,
72                                       int error,
73                                       int gateway)
74 {
75         return;
76 }
77
78 static inline void selinux_netlbl_sk_security_reset(
79                                                struct sk_security_struct *ssec,
80                                                int family)
81 {
82         return;
83 }
84
85 static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb,
86                                                u16 family,
87                                                u32 *type,
88                                                u32 *sid)
89 {
90         *type = NETLBL_NLTYPE_NONE;
91         *sid = SECSID_NULL;
92         return 0;
93 }
94 static inline int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
95                                                u16 family,
96                                                u32 sid)
97 {
98         return 0;
99 }
100
101 static inline void selinux_netlbl_sock_graft(struct sock *sk,
102                                              struct socket *sock)
103 {
104         return;
105 }
106 static inline int selinux_netlbl_socket_post_create(struct socket *sock)
107 {
108         return 0;
109 }
110 static inline int selinux_netlbl_inode_permission(struct inode *inode,
111                                                   int mask)
112 {
113         return 0;
114 }
115 static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
116                                               struct sk_buff *skb,
117                                               u16 family,
118                                               struct avc_audit_data *ad)
119 {
120         return 0;
121 }
122 static inline int selinux_netlbl_socket_setsockopt(struct socket *sock,
123                                                    int level,
124                                                    int optname)
125 {
126         return 0;
127 }
128 #endif /* CONFIG_NETLABEL */
129
130 #endif