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 	struct list_head list;	/* list of inode_security_struct */
42 	u32 task_sid;		/* SID of creating task */
43 	u32 sid;		/* SID of this object */
44 	u16 sclass;		/* security class of this object */
45 	unsigned char initialized;	/* initialization flag */
46 	struct mutex lock;
47 };
48 
49 struct file_security_struct {
50 	u32 sid;		/* SID of open file description */
51 	u32 fown_sid;		/* SID of file owner (for SIGIO) */
52 	u32 isid;		/* SID of inode at the time of file open */
53 	u32 pseqno;		/* Policy seqno at the time of file open */
54 };
55 
56 struct superblock_security_struct {
57 	struct super_block *sb;		/* back pointer to sb object */
58 	struct list_head list;		/* list of superblock_security_struct */
59 	u32 sid;			/* SID of file system superblock */
60 	u32 def_sid;			/* default SID for labeling */
61 	u32 mntpoint_sid;		/* SECURITY_FS_USE_MNTPOINT context for files */
62 	unsigned int behavior;		/* labeling behavior */
63 	unsigned char initialized;	/* initialization flag */
64 	unsigned char flags;		/* which mount options were specified */
65 	unsigned char proc;		/* proc fs */
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 bprm_security_struct {
81 	u32 sid;		/* SID for transformed process */
82 	unsigned char set;
83 
84 	/*
85 	 * unsafe is used to share failure information from bprm_apply_creds()
86 	 * to bprm_post_apply_creds().
87 	 */
88 	char unsafe;
89 };
90 
91 struct netif_security_struct {
92 	int ifindex;			/* device index */
93 	u32 sid;			/* SID for this interface */
94 };
95 
96 struct netnode_security_struct {
97 	union {
98 		__be32 ipv4;		/* IPv4 node address */
99 		struct in6_addr ipv6;	/* IPv6 node address */
100 	} addr;
101 	u32 sid;			/* SID for this node */
102 	u16 family;			/* address family */
103 };
104 
105 struct netport_security_struct {
106 	u32 sid;			/* SID for this node */
107 	u16 port;			/* port number */
108 	u8 protocol;			/* transport protocol */
109 };
110 
111 struct sk_security_struct {
112 #ifdef CONFIG_NETLABEL
113 	enum {				/* NetLabel state */
114 		NLBL_UNSET = 0,
115 		NLBL_REQUIRE,
116 		NLBL_LABELED,
117 		NLBL_REQSKB,
118 		NLBL_CONNLABELED,
119 	} nlbl_state;
120 	struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
121 #endif
122 	u32 sid;			/* SID of this object */
123 	u32 peer_sid;			/* SID of peer */
124 	u16 sclass;			/* sock security class */
125 };
126 
127 struct key_security_struct {
128 	u32 sid;	/* SID of key */
129 };
130 
131 extern unsigned int selinux_checkreqprot;
132 
133 #endif /* _SELINUX_OBJSEC_H_ */
134