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1da177e4 LT |
1 | /* |
2 | * NSA Security-Enhanced Linux (SELinux) security module | |
3 | * | |
4 | * This file contains the SELinux security data structures for kernel objects. | |
5 | * | |
6 | * Author(s): Stephen Smalley, <sds@epoch.ncsc.mil> | |
a936b79b EP |
7 | * Chris Vance, <cvance@nai.com> |
8 | * Wayne Salamon, <wsalamon@nai.com> | |
9 | * James Morris <jmorris@redhat.com> | |
1da177e4 LT |
10 | * |
11 | * Copyright (C) 2001,2002 Networks Associates Technology, Inc. | |
12 | * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2, | |
a936b79b | 16 | * as published by the Free Software Foundation. |
1da177e4 LT |
17 | */ |
18 | #ifndef _SELINUX_OBJSEC_H_ | |
19 | #define _SELINUX_OBJSEC_H_ | |
20 | ||
21 | #include <linux/list.h> | |
22 | #include <linux/sched.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/binfmts.h> | |
25 | #include <linux/in.h> | |
9f2ad665 | 26 | #include <linux/spinlock.h> |
cbe0d6e8 | 27 | #include <net/net_namespace.h> |
1da177e4 LT |
28 | #include "flask.h" |
29 | #include "avc.h" | |
30 | ||
31 | struct task_security_struct { | |
a936b79b EP |
32 | u32 osid; /* SID prior to last execve */ |
33 | u32 sid; /* current SID */ | |
34 | u32 exec_sid; /* exec SID */ | |
35 | u32 create_sid; /* fscreate SID */ | |
36 | u32 keycreate_sid; /* keycreate SID */ | |
37 | u32 sockcreate_sid; /* fscreate SID */ | |
1da177e4 LT |
38 | }; |
39 | ||
be0554c9 SS |
40 | /* |
41 | * get the subjective security ID of the current task | |
42 | */ | |
43 | static inline u32 current_sid(void) | |
44 | { | |
45 | const struct task_security_struct *tsec = current_security(); | |
46 | ||
47 | return tsec->sid; | |
48 | } | |
49 | ||
6f3be9f5 | 50 | enum label_initialized { |
4b57d6bc | 51 | LABEL_INVALID, /* invalid or not initialized */ |
9287aed2 AG |
52 | LABEL_INITIALIZED, /* initialized */ |
53 | LABEL_PENDING | |
6f3be9f5 AG |
54 | }; |
55 | ||
1da177e4 | 56 | struct inode_security_struct { |
a936b79b | 57 | struct inode *inode; /* back pointer to inode object */ |
3dc91d43 SR |
58 | union { |
59 | struct list_head list; /* list of inode_security_struct */ | |
60 | struct rcu_head rcu; /* for freeing the inode_security_struct */ | |
61 | }; | |
a936b79b EP |
62 | u32 task_sid; /* SID of creating task */ |
63 | u32 sid; /* SID of this object */ | |
64 | u16 sclass; /* security class of this object */ | |
65 | unsigned char initialized; /* initialization flag */ | |
9287aed2 | 66 | spinlock_t lock; |
1da177e4 LT |
67 | }; |
68 | ||
69 | struct file_security_struct { | |
a936b79b EP |
70 | u32 sid; /* SID of open file description */ |
71 | u32 fown_sid; /* SID of file owner (for SIGIO) */ | |
72 | u32 isid; /* SID of inode at the time of file open */ | |
73 | u32 pseqno; /* Policy seqno at the time of file open */ | |
1da177e4 LT |
74 | }; |
75 | ||
76 | struct superblock_security_struct { | |
a936b79b | 77 | struct super_block *sb; /* back pointer to sb object */ |
c312feb2 | 78 | u32 sid; /* SID of file system superblock */ |
1da177e4 | 79 | u32 def_sid; /* default SID for labeling */ |
c312feb2 | 80 | u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ |
f936c6e5 | 81 | unsigned short behavior; /* labeling behavior */ |
cfca0303 | 82 | unsigned short flags; /* which mount options were specified */ |
bc7e982b | 83 | struct mutex lock; |
1da177e4 LT |
84 | struct list_head isec_head; |
85 | spinlock_t isec_lock; | |
86 | }; | |
87 | ||
88 | struct msg_security_struct { | |
a936b79b | 89 | u32 sid; /* SID of message */ |
1da177e4 LT |
90 | }; |
91 | ||
92 | struct ipc_security_struct { | |
1da177e4 | 93 | u16 sclass; /* security class of this object */ |
a936b79b | 94 | u32 sid; /* SID of IPC resource */ |
1da177e4 LT |
95 | }; |
96 | ||
1da177e4 | 97 | struct netif_security_struct { |
cbe0d6e8 | 98 | struct net *ns; /* network namespace */ |
e8bfdb9d PM |
99 | int ifindex; /* device index */ |
100 | u32 sid; /* SID for this interface */ | |
1da177e4 LT |
101 | }; |
102 | ||
224dfbd8 PM |
103 | struct netnode_security_struct { |
104 | union { | |
105 | __be32 ipv4; /* IPv4 node address */ | |
106 | struct in6_addr ipv6; /* IPv6 node address */ | |
107 | } addr; | |
108 | u32 sid; /* SID for this node */ | |
109 | u16 family; /* address family */ | |
110 | }; | |
111 | ||
3e112172 PM |
112 | struct netport_security_struct { |
113 | u32 sid; /* SID for this node */ | |
114 | u16 port; /* port number */ | |
115 | u8 protocol; /* transport protocol */ | |
116 | }; | |
117 | ||
1da177e4 | 118 | struct sk_security_struct { |
220deb96 | 119 | #ifdef CONFIG_NETLABEL |
7420ed23 VY |
120 | enum { /* NetLabel state */ |
121 | NLBL_UNSET = 0, | |
122 | NLBL_REQUIRE, | |
123 | NLBL_LABELED, | |
948bf85c | 124 | NLBL_REQSKB, |
014ab19a | 125 | NLBL_CONNLABELED, |
7420ed23 | 126 | } nlbl_state; |
6c5b3fc0 | 127 | struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */ |
7420ed23 | 128 | #endif |
6c5b3fc0 PM |
129 | u32 sid; /* SID of this object */ |
130 | u32 peer_sid; /* SID of peer */ | |
131 | u16 sclass; /* sock security class */ | |
1da177e4 LT |
132 | }; |
133 | ||
5dbbaf2d PM |
134 | struct tun_security_struct { |
135 | u32 sid; /* SID for the tun device sockets */ | |
136 | }; | |
137 | ||
d720024e | 138 | struct key_security_struct { |
a936b79b | 139 | u32 sid; /* SID of key */ |
d720024e ML |
140 | }; |
141 | ||
1da177e4 LT |
142 | extern unsigned int selinux_checkreqprot; |
143 | ||
144 | #endif /* _SELINUX_OBJSEC_H_ */ |