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_ */
129