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 unsigned char inherit; /* inherit SID from parent entry */ 48 }; 49 50 struct 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 57 struct 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 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 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 92 struct netif_security_struct { 93 int ifindex; /* device index */ 94 u32 sid; /* SID for this interface */ 95 }; 96 97 struct 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 }; 105 106 struct netport_security_struct { 107 u32 sid; /* SID for this node */ 108 u16 port; /* port number */ 109 u8 protocol; /* transport protocol */ 110 }; 111 112 struct 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 }; 124 125 struct key_security_struct { 126 u32 sid; /* SID of key */ 127 }; 128 129 extern unsigned int selinux_checkreqprot; 130 131 #endif /* _SELINUX_OBJSEC_H_ */ 132