security/selinux/include/objsec.h

   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 ptrace_sid;      /* SID of ptrace parent */
  36 };
  37
  38 struct inode_security_struct {
  39         struct inode *inode;           /* back pointer to inode object */
  40         struct list_head list;         /* list of inode_security_struct */
  41         u32 task_sid;        /* SID of creating task */
  42         u32 sid;             /* SID of this object */
  43         u16 sclass;       /* security class of this object */
  44         unsigned char initialized;     /* initialization flag */
  45         struct semaphore sem;
  46         unsigned char inherit;         /* inherit SID from parent entry */
  47 };
  48
  49 struct file_security_struct {
  50         struct file *file;              /* back pointer to file object */
  51         u32 sid;              /* SID of open file description */
  52         u32 fown_sid;         /* SID of file owner (for SIGIO) */
  53 };
  54
  55 struct superblock_security_struct {
  56         struct super_block *sb;         /* back pointer to sb object */
  57         struct list_head list;          /* list of superblock_security_struct */
  58         u32 sid;              /* SID of file system */
  59         u32 def_sid;                    /* default SID for labeling */
  60         unsigned int behavior;          /* labeling behavior */
  61         unsigned char initialized;      /* initialization flag */
  62         unsigned char proc;             /* proc fs */
  63         struct semaphore sem;
  64         struct list_head isec_head;
  65         spinlock_t isec_lock;
  66 };
  67
  68 struct msg_security_struct {
  69         struct msg_msg *msg;            /* back pointer */
  70         u32 sid;              /* SID of message */
  71 };
  72
  73 struct ipc_security_struct {
  74         struct kern_ipc_perm *ipc_perm; /* back pointer */
  75         u16 sclass;     /* security class of this object */
  76         u32 sid;              /* SID of IPC resource */
  77 };
  78
  79 struct bprm_security_struct {
  80         struct linux_binprm *bprm;     /* back pointer to bprm object */
  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         struct net_device *dev;         /* back pointer */
  93         u32 if_sid;                     /* SID for this interface */
  94         u32 msg_sid;                    /* default SID for messages received on this interface */
  95 };
  96
  97 struct sk_security_struct {
  98         struct sock *sk;                /* back pointer to sk object */
  99         u32 peer_sid;                   /* SID of peer */
 100 };
 101
 102 extern unsigned int selinux_checkreqprot;
 103
 104 #endif /* _SELINUX_OBJSEC_H_ */