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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
40enum label_initialized {
41 LABEL_INVALID, /* invalid or not initialized */
42 LABEL_INITIALIZED /* initialized */
43};
44
45struct inode_security_struct {
46 struct inode *inode; /* back pointer to inode object */
47 union {
48 struct list_head list; /* list of inode_security_struct */
49 struct rcu_head rcu; /* for freeing the inode_security_struct */
50 };
51 u32 task_sid; /* SID of creating task */
52 u32 sid; /* SID of this object */
53 u16 sclass; /* security class of this object */
54 unsigned char initialized; /* initialization flag */
55 struct mutex lock;
56};
57
58struct file_security_struct {
59 u32 sid; /* SID of open file description */
60 u32 fown_sid; /* SID of file owner (for SIGIO) */
61 u32 isid; /* SID of inode at the time of file open */
62 u32 pseqno; /* Policy seqno at the time of file open */
63};
64
65struct superblock_security_struct {
66 struct super_block *sb; /* back pointer to sb object */
67 u32 sid; /* SID of file system superblock */
68 u32 def_sid; /* default SID for labeling */
69 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */
70 unsigned short behavior; /* labeling behavior */
71 unsigned short flags; /* which mount options were specified */
72 struct mutex lock;
73 struct list_head isec_head;
74 spinlock_t isec_lock;
75};
76
77struct msg_security_struct {
78 u32 sid; /* SID of message */
79};
80
81struct ipc_security_struct {
82 u16 sclass; /* security class of this object */
83 u32 sid; /* SID of IPC resource */
84};
85
86struct netif_security_struct {
87 struct net *ns; /* network namespace */
88 int ifindex; /* device index */
89 u32 sid; /* SID for this interface */
90};
91
92struct netnode_security_struct {
93 union {
94 __be32 ipv4; /* IPv4 node address */
95 struct in6_addr ipv6; /* IPv6 node address */
96 } addr;
97 u32 sid; /* SID for this node */
98 u16 family; /* address family */
99};
100
101struct netport_security_struct {
102 u32 sid; /* SID for this node */
103 u16 port; /* port number */
104 u8 protocol; /* transport protocol */
105};
106
107struct sk_security_struct {
108#ifdef CONFIG_NETLABEL
109 enum { /* NetLabel state */
110 NLBL_UNSET = 0,
111 NLBL_REQUIRE,
112 NLBL_LABELED,
113 NLBL_REQSKB,
114 NLBL_CONNLABELED,
115 } nlbl_state;
116 struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
117#endif
118 u32 sid; /* SID of this object */
119 u32 peer_sid; /* SID of peer */
120 u16 sclass; /* sock security class */
121};
122
123struct tun_security_struct {
124 u32 sid; /* SID for the tun device sockets */
125};
126
127struct key_security_struct {
128 u32 sid; /* SID of key */
129};
130
131extern unsigned int selinux_checkreqprot;
132
133#endif /* _SELINUX_OBJSEC_H_ */