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 u32 ptrace_sid; /* SID of ptrace parent */ 38 }; 39 40 struct inode_security_struct { 41 struct inode *inode; /* back pointer to inode object */ 42 struct list_head list; /* list of inode_security_struct */ 43 u32 task_sid; /* SID of creating task */ 44 u32 sid; /* SID of this object */ 45 u16 sclass; /* security class of this object */ 46 unsigned char initialized; /* initialization flag */ 47 struct mutex lock; 48 unsigned char inherit; /* inherit SID from parent entry */ 49 }; 50 51 struct file_security_struct { 52 u32 sid; /* SID of open file description */ 53 u32 fown_sid; /* SID of file owner (for SIGIO) */ 54 u32 isid; /* SID of inode at the time of file open */ 55 u32 pseqno; /* Policy seqno at the time of file open */ 56 }; 57 58 struct superblock_security_struct { 59 struct super_block *sb; /* back pointer to sb object */ 60 struct list_head list; /* list of superblock_security_struct */ 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 int behavior; /* labeling behavior */ 65 unsigned char initialized; /* initialization flag */ 66 unsigned char flags; /* which mount options were specified */ 67 unsigned char proc; /* proc fs */ 68 struct mutex lock; 69 struct list_head isec_head; 70 spinlock_t isec_lock; 71 }; 72 73 struct msg_security_struct { 74 u32 sid; /* SID of message */ 75 }; 76 77 struct ipc_security_struct { 78 u16 sclass; /* security class of this object */ 79 u32 sid; /* SID of IPC resource */ 80 }; 81 82 struct bprm_security_struct { 83 u32 sid; /* SID for transformed process */ 84 unsigned char set; 85 86 /* 87 * unsafe is used to share failure information from bprm_apply_creds() 88 * to bprm_post_apply_creds(). 89 */ 90 char unsafe; 91 }; 92 93 struct netif_security_struct { 94 int ifindex; /* device index */ 95 u32 sid; /* SID for this interface */ 96 }; 97 98 struct netnode_security_struct { 99 union { 100 __be32 ipv4; /* IPv4 node address */ 101 struct in6_addr ipv6; /* IPv6 node address */ 102 } addr; 103 u32 sid; /* SID for this node */ 104 u16 family; /* address family */ 105 }; 106 107 struct sk_security_struct { 108 u32 sid; /* SID of this object */ 109 u32 peer_sid; /* SID of peer */ 110 u16 sclass; /* sock security class */ 111 #ifdef CONFIG_NETLABEL 112 enum { /* NetLabel state */ 113 NLBL_UNSET = 0, 114 NLBL_REQUIRE, 115 NLBL_LABELED, 116 } nlbl_state; 117 #endif 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