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 31 struct 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 40 struct 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 53 struct 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 60 struct 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 72 struct msg_security_struct { 73 u32 sid; /* SID of message */ 74 }; 75 76 struct ipc_security_struct { 77 u16 sclass; /* security class of this object */ 78 u32 sid; /* SID of IPC resource */ 79 }; 80 81 struct netif_security_struct { 82 struct net *ns; /* network namespace */ 83 int ifindex; /* device index */ 84 u32 sid; /* SID for this interface */ 85 }; 86 87 struct 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 96 struct netport_security_struct { 97 u32 sid; /* SID for this node */ 98 u16 port; /* port number */ 99 u8 protocol; /* transport protocol */ 100 }; 101 102 struct 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 }; 117 118 struct tun_security_struct { 119 u32 sid; /* SID for the tun device sockets */ 120 }; 121 122 struct key_security_struct { 123 u32 sid; /* SID of key */ 124 }; 125 126 extern unsigned int selinux_checkreqprot; 127 128 #endif /* _SELINUX_OBJSEC_H_ */ 129