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 struct task_struct *task; /* back pointer to task object */ 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 u32 ptrace_sid; /* SID of ptrace parent */ 39 }; 40 41 struct inode_security_struct { 42 struct inode *inode; /* back pointer to inode object */ 43 struct list_head list; /* list of inode_security_struct */ 44 u32 task_sid; /* SID of creating task */ 45 u32 sid; /* SID of this object */ 46 u16 sclass; /* security class of this object */ 47 unsigned char initialized; /* initialization flag */ 48 struct mutex lock; 49 unsigned char inherit; /* inherit SID from parent entry */ 50 }; 51 52 struct file_security_struct { 53 struct file *file; /* back pointer to file object */ 54 u32 sid; /* SID of open file description */ 55 u32 fown_sid; /* SID of file owner (for SIGIO) */ 56 u32 isid; /* SID of inode at the time of file open */ 57 u32 pseqno; /* Policy seqno at the time of file open */ 58 }; 59 60 struct superblock_security_struct { 61 struct super_block *sb; /* back pointer to sb object */ 62 struct list_head list; /* list of superblock_security_struct */ 63 u32 sid; /* SID of file system superblock */ 64 u32 def_sid; /* default SID for labeling */ 65 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ 66 unsigned int behavior; /* labeling behavior */ 67 unsigned char initialized; /* initialization flag */ 68 unsigned char flags; /* which mount options were specified */ 69 unsigned char proc; /* proc fs */ 70 struct mutex lock; 71 struct list_head isec_head; 72 spinlock_t isec_lock; 73 }; 74 75 struct msg_security_struct { 76 struct msg_msg *msg; /* back pointer */ 77 u32 sid; /* SID of message */ 78 }; 79 80 struct ipc_security_struct { 81 struct kern_ipc_perm *ipc_perm; /* back pointer */ 82 u16 sclass; /* security class of this object */ 83 u32 sid; /* SID of IPC resource */ 84 }; 85 86 struct bprm_security_struct { 87 struct linux_binprm *bprm; /* back pointer to bprm object */ 88 u32 sid; /* SID for transformed process */ 89 unsigned char set; 90 91 /* 92 * unsafe is used to share failure information from bprm_apply_creds() 93 * to bprm_post_apply_creds(). 94 */ 95 char unsafe; 96 }; 97 98 struct netif_security_struct { 99 int ifindex; /* device index */ 100 u32 sid; /* SID for this interface */ 101 }; 102 103 struct netnode_security_struct { 104 union { 105 __be32 ipv4; /* IPv4 node address */ 106 struct in6_addr ipv6; /* IPv6 node address */ 107 } addr; 108 u32 sid; /* SID for this node */ 109 u16 family; /* address family */ 110 }; 111 112 struct sk_security_struct { 113 struct sock *sk; /* back pointer to sk object */ 114 u32 sid; /* SID of this object */ 115 u32 peer_sid; /* SID of peer */ 116 #ifdef CONFIG_NETLABEL 117 u16 sclass; /* sock security class */ 118 enum { /* NetLabel state */ 119 NLBL_UNSET = 0, 120 NLBL_REQUIRE, 121 NLBL_LABELED, 122 } nlbl_state; 123 spinlock_t nlbl_lock; /* protects nlbl_state */ 124 #endif 125 }; 126 127 struct key_security_struct { 128 struct key *obj; /* back pointer */ 129 u32 sid; /* SID of key */ 130 }; 131 132 extern unsigned int selinux_checkreqprot; 133 134 #endif /* _SELINUX_OBJSEC_H_ */ 135