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 "flask.h"
28 #include "avc.h"
29 
30 struct task_security_struct {
31 	u32 osid;		/* SID prior to last execve */
32 	u32 sid;		/* current SID */
33 	u32 exec_sid;		/* exec SID */
34 	u32 create_sid;		/* fscreate SID */
35 	u32 keycreate_sid;	/* keycreate SID */
36 	u32 sockcreate_sid;	/* fscreate SID */
37 };
38 
39 struct inode_security_struct {
40 	struct inode *inode;	/* back pointer to inode object */
41 	union {
42 		struct list_head list;	/* list of inode_security_struct */
43 		struct rcu_head rcu;	/* for freeing the inode_security_struct */
44 	};
45 	u32 task_sid;		/* SID of creating task */
46 	u32 sid;		/* SID of this object */
47 	u16 sclass;		/* security class of this object */
48 	unsigned char initialized;	/* initialization flag */
49 	struct mutex lock;
50 };
51 
52 struct file_security_struct {
53 	u32 sid;		/* SID of open file description */
54 	u32 fown_sid;		/* SID of file owner (for SIGIO) */
55 	u32 isid;		/* SID of inode at the time of file open */
56 	u32 pseqno;		/* Policy seqno at the time of file open */
57 };
58 
59 struct superblock_security_struct {
60 	struct super_block *sb;		/* back pointer to sb object */
61 	u32 sid;			/* SID of file system superblock */
62 	u32 def_sid;			/* default SID for labeling */
63 	u32 mntpoint_sid;		/* SECURITY_FS_USE_MNTPOINT context for files */
64 	unsigned short behavior;	/* labeling behavior */
65 	unsigned short flags;		/* which mount options were specified */
66 	struct mutex lock;
67 	struct list_head isec_head;
68 	spinlock_t isec_lock;
69 };
70 
71 struct msg_security_struct {
72 	u32 sid;	/* SID of message */
73 };
74 
75 struct ipc_security_struct {
76 	u16 sclass;	/* security class of this object */
77 	u32 sid;	/* SID of IPC resource */
78 };
79 
80 struct netif_security_struct {
81 	int ifindex;			/* device index */
82 	u32 sid;			/* SID for this interface */
83 };
84 
85 struct netnode_security_struct {
86 	union {
87 		__be32 ipv4;		/* IPv4 node address */
88 		struct in6_addr ipv6;	/* IPv6 node address */
89 	} addr;
90 	u32 sid;			/* SID for this node */
91 	u16 family;			/* address family */
92 };
93 
94 struct netport_security_struct {
95 	u32 sid;			/* SID for this node */
96 	u16 port;			/* port number */
97 	u8 protocol;			/* transport protocol */
98 };
99 
100 struct sk_security_struct {
101 #ifdef CONFIG_NETLABEL
102 	enum {				/* NetLabel state */
103 		NLBL_UNSET = 0,
104 		NLBL_REQUIRE,
105 		NLBL_LABELED,
106 		NLBL_REQSKB,
107 		NLBL_CONNLABELED,
108 	} nlbl_state;
109 	struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
110 #endif
111 	u32 sid;			/* SID of this object */
112 	u32 peer_sid;			/* SID of peer */
113 	u16 sclass;			/* sock security class */
114 };
115 
116 struct tun_security_struct {
117 	u32 sid;			/* SID for the tun device sockets */
118 };
119 
120 struct key_security_struct {
121 	u32 sid;	/* SID of key */
122 };
123 
124 extern unsigned int selinux_checkreqprot;
125 
126 #endif /* _SELINUX_OBJSEC_H_ */
127