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 enum label_initialized { 41 LABEL_INVALID, /* invalid or not initialized */ 42 LABEL_INITIALIZED /* initialized */ 43 }; 44 45 struct inode_security_struct { 46 struct inode *inode; /* back pointer to inode object */ 47 union { 48 struct list_head list; /* list of inode_security_struct */ 49 struct rcu_head rcu; /* for freeing the inode_security_struct */ 50 }; 51 u32 task_sid; /* SID of creating task */ 52 u32 sid; /* SID of this object */ 53 u16 sclass; /* security class of this object */ 54 unsigned char initialized; /* initialization flag */ 55 struct mutex lock; 56 }; 57 58 struct file_security_struct { 59 u32 sid; /* SID of open file description */ 60 u32 fown_sid; /* SID of file owner (for SIGIO) */ 61 u32 isid; /* SID of inode at the time of file open */ 62 u32 pseqno; /* Policy seqno at the time of file open */ 63 }; 64 65 struct superblock_security_struct { 66 struct super_block *sb; /* back pointer to sb object */ 67 u32 sid; /* SID of file system superblock */ 68 u32 def_sid; /* default SID for labeling */ 69 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ 70 unsigned short behavior; /* labeling behavior */ 71 unsigned short flags; /* which mount options were specified */ 72 struct mutex lock; 73 struct list_head isec_head; 74 spinlock_t isec_lock; 75 }; 76 77 struct msg_security_struct { 78 u32 sid; /* SID of message */ 79 }; 80 81 struct ipc_security_struct { 82 u16 sclass; /* security class of this object */ 83 u32 sid; /* SID of IPC resource */ 84 }; 85 86 struct netif_security_struct { 87 struct net *ns; /* network namespace */ 88 int ifindex; /* device index */ 89 u32 sid; /* SID for this interface */ 90 }; 91 92 struct netnode_security_struct { 93 union { 94 __be32 ipv4; /* IPv4 node address */ 95 struct in6_addr ipv6; /* IPv6 node address */ 96 } addr; 97 u32 sid; /* SID for this node */ 98 u16 family; /* address family */ 99 }; 100 101 struct netport_security_struct { 102 u32 sid; /* SID for this node */ 103 u16 port; /* port number */ 104 u8 protocol; /* transport protocol */ 105 }; 106 107 struct sk_security_struct { 108 #ifdef CONFIG_NETLABEL 109 enum { /* NetLabel state */ 110 NLBL_UNSET = 0, 111 NLBL_REQUIRE, 112 NLBL_LABELED, 113 NLBL_REQSKB, 114 NLBL_CONNLABELED, 115 } nlbl_state; 116 struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */ 117 #endif 118 u32 sid; /* SID of this object */ 119 u32 peer_sid; /* SID of peer */ 120 u16 sclass; /* sock security class */ 121 }; 122 123 struct tun_security_struct { 124 u32 sid; /* SID for the tun device sockets */ 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