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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>
7 * Chris Vance, <cvance@nai.com>
8 * Wayne Salamon, <wsalamon@nai.com>
9 * James Morris <jmorris@redhat.com>
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,
16 * as published by the Free Software Foundation.
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>
26#include <linux/spinlock.h>
27#include <net/net_namespace.h>
28#include "flask.h"
29#include "avc.h"
30
31struct task_security_struct {
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 */
38};
39
40struct inode_security_struct {
41 struct inode *inode; /* back pointer to inode object */
42 union {
43 struct list_head list; /* list of inode_security_struct */
44 struct rcu_head rcu; /* for freeing the inode_security_struct */
45 };
46 u32 task_sid; /* SID of creating task */
47 u32 sid; /* SID of this object */
48 u16 sclass; /* security class of this object */
49 unsigned char initialized; /* initialization flag */
50 struct mutex lock;
51};
52
53struct file_security_struct {
54 u32 sid; /* SID of open file description */
55 u32 fown_sid; /* SID of file owner (for SIGIO) */
56 u32 isid; /* SID of inode at the time of file open */
57 u32 pseqno; /* Policy seqno at the time of file open */
58};
59
60struct superblock_security_struct {
61 struct super_block *sb; /* back pointer to sb object */
62 u32 sid; /* SID of file system superblock */
63 u32 def_sid; /* default SID for labeling */
64 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */
65 unsigned short behavior; /* labeling behavior */
66 unsigned short flags; /* which mount options were specified */
67 struct mutex lock;
68 struct list_head isec_head;
69 spinlock_t isec_lock;
70};
71
72struct msg_security_struct {
73 u32 sid; /* SID of message */
74};
75
76struct ipc_security_struct {
77 u16 sclass; /* security class of this object */
78 u32 sid; /* SID of IPC resource */
79};
80
81struct netif_security_struct {
82 struct net *ns; /* network namespace */
83 int ifindex; /* device index */
84 u32 sid; /* SID for this interface */
85};
86
87struct netnode_security_struct {
88 union {
89 __be32 ipv4; /* IPv4 node address */
90 struct in6_addr ipv6; /* IPv6 node address */
91 } addr;
92 u32 sid; /* SID for this node */
93 u16 family; /* address family */
94};
95
96struct netport_security_struct {
97 u32 sid; /* SID for this node */
98 u16 port; /* port number */
99 u8 protocol; /* transport protocol */
100};
101
102struct sk_security_struct {
103#ifdef CONFIG_NETLABEL
104 enum { /* NetLabel state */
105 NLBL_UNSET = 0,
106 NLBL_REQUIRE,
107 NLBL_LABELED,
108 NLBL_REQSKB,
109 NLBL_CONNLABELED,
110 } nlbl_state;
111 struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
112#endif
113 u32 sid; /* SID of this object */
114 u32 peer_sid; /* SID of peer */
115 u16 sclass; /* sock security class */
116};
117
118struct tun_security_struct {
119 u32 sid; /* SID for the tun device sockets */
120};
121
122struct key_security_struct {
123 u32 sid; /* SID of key */
124};
125
126extern unsigned int selinux_checkreqprot;
127
128#endif /* _SELINUX_OBJSEC_H_ */