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 }; 48 49 struct file_security_struct { 50 u32 sid; /* SID of open file description */ 51 u32 fown_sid; /* SID of file owner (for SIGIO) */ 52 u32 isid; /* SID of inode at the time of file open */ 53 u32 pseqno; /* Policy seqno at the time of file open */ 54 }; 55 56 struct superblock_security_struct { 57 struct super_block *sb; /* back pointer to sb object */ 58 struct list_head list; /* list of superblock_security_struct */ 59 u32 sid; /* SID of file system superblock */ 60 u32 def_sid; /* default SID for labeling */ 61 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ 62 unsigned int behavior; /* labeling behavior */ 63 unsigned char initialized; /* initialization flag */ 64 unsigned char flags; /* which mount options were specified */ 65 unsigned char proc; /* proc fs */ 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 bprm_security_struct { 81 u32 sid; /* SID for transformed process */ 82 unsigned char set; 83 84 /* 85 * unsafe is used to share failure information from bprm_apply_creds() 86 * to bprm_post_apply_creds(). 87 */ 88 char unsafe; 89 }; 90 91 struct netif_security_struct { 92 int ifindex; /* device index */ 93 u32 sid; /* SID for this interface */ 94 }; 95 96 struct netnode_security_struct { 97 union { 98 __be32 ipv4; /* IPv4 node address */ 99 struct in6_addr ipv6; /* IPv6 node address */ 100 } addr; 101 u32 sid; /* SID for this node */ 102 u16 family; /* address family */ 103 }; 104 105 struct netport_security_struct { 106 u32 sid; /* SID for this node */ 107 u16 port; /* port number */ 108 u8 protocol; /* transport protocol */ 109 }; 110 111 struct sk_security_struct { 112 u32 sid; /* SID of this object */ 113 u32 peer_sid; /* SID of peer */ 114 u16 sclass; /* sock security class */ 115 #ifdef CONFIG_NETLABEL 116 enum { /* NetLabel state */ 117 NLBL_UNSET = 0, 118 NLBL_REQUIRE, 119 NLBL_LABELED, 120 NLBL_REQSKB, 121 NLBL_CONNLABELED, 122 } nlbl_state; 123 #endif 124 }; 125 126 struct key_security_struct { 127 u32 sid; /* SID of key */ 128 }; 129 130 extern unsigned int selinux_checkreqprot; 131 132 #endif /* _SELINUX_OBJSEC_H_ */ 133