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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 "flask.h"
28#include "avc.h"
29
30struct 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
39struct 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 unsigned char inherit; /* inherit SID from parent entry */
48};
49
50struct file_security_struct {
51 u32 sid; /* SID of open file description */
52 u32 fown_sid; /* SID of file owner (for SIGIO) */
53 u32 isid; /* SID of inode at the time of file open */
54 u32 pseqno; /* Policy seqno at the time of file open */
55};
56
57struct superblock_security_struct {
58 struct super_block *sb; /* back pointer to sb object */
59 struct list_head list; /* list of superblock_security_struct */
60 u32 sid; /* SID of file system superblock */
61 u32 def_sid; /* default SID for labeling */
62 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */
63 unsigned int behavior; /* labeling behavior */
64 unsigned char initialized; /* initialization flag */
65 unsigned char flags; /* which mount options were specified */
66 unsigned char proc; /* proc fs */
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 bprm_security_struct {
82 u32 sid; /* SID for transformed process */
83 unsigned char set;
84
85 /*
86 * unsafe is used to share failure information from bprm_apply_creds()
87 * to bprm_post_apply_creds().
88 */
89 char unsafe;
90};
91
92struct netif_security_struct {
93 int ifindex; /* device index */
94 u32 sid; /* SID for this interface */
95};
96
97struct netnode_security_struct {
98 union {
99 __be32 ipv4; /* IPv4 node address */
100 struct in6_addr ipv6; /* IPv6 node address */
101 } addr;
102 u32 sid; /* SID for this node */
103 u16 family; /* address family */
104};
105
106struct netport_security_struct {
107 u32 sid; /* SID for this node */
108 u16 port; /* port number */
109 u8 protocol; /* transport protocol */
110};
111
112struct sk_security_struct {
113 u32 sid; /* SID of this object */
114 u32 peer_sid; /* SID of peer */
115 u16 sclass; /* sock security class */
116#ifdef CONFIG_NETLABEL
117 enum { /* NetLabel state */
118 NLBL_UNSET = 0,
119 NLBL_REQUIRE,
120 NLBL_LABELED,
121 } nlbl_state;
122#endif
123};
124
125struct key_security_struct {
126 u32 sid; /* SID of key */
127};
128
129extern unsigned int selinux_checkreqprot;
130
131#endif /* _SELINUX_OBJSEC_H_ */