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 "flask.h" 27 #include "avc.h" 28 29 struct task_security_struct { 30 struct task_struct *task; /* back pointer to task object */ 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 semaphore sem; 48 unsigned char inherit; /* inherit SID from parent entry */ 49 }; 50 51 struct file_security_struct { 52 struct file *file; /* back pointer to file object */ 53 u32 sid; /* SID of open file description */ 54 u32 fown_sid; /* SID of file owner (for SIGIO) */ 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 */ 61 u32 def_sid; /* default SID for labeling */ 62 unsigned int behavior; /* labeling behavior */ 63 unsigned char initialized; /* initialization flag */ 64 unsigned char proc; /* proc fs */ 65 struct semaphore sem; 66 struct list_head isec_head; 67 spinlock_t isec_lock; 68 }; 69 70 struct msg_security_struct { 71 struct msg_msg *msg; /* back pointer */ 72 u32 sid; /* SID of message */ 73 }; 74 75 struct ipc_security_struct { 76 struct kern_ipc_perm *ipc_perm; /* back pointer */ 77 u16 sclass; /* security class of this object */ 78 u32 sid; /* SID of IPC resource */ 79 }; 80 81 struct bprm_security_struct { 82 struct linux_binprm *bprm; /* back pointer to bprm object */ 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 struct net_device *dev; /* back pointer */ 95 u32 if_sid; /* SID for this interface */ 96 u32 msg_sid; /* default SID for messages received on this interface */ 97 }; 98 99 struct sk_security_struct { 100 struct sock *sk; /* back pointer to sk object */ 101 u32 peer_sid; /* SID of peer */ 102 }; 103 104 struct key_security_struct { 105 struct key *obj; /* back pointer */ 106 u32 sid; /* SID of key */ 107 }; 108 109 extern unsigned int selinux_checkreqprot; 110 111 #endif /* _SELINUX_OBJSEC_H_ */ 112