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