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         unsigned long magic;           /* magic number for this module */
  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         struct avc_entry_ref avcr;     /* reference to process permissions */
  37         u32 ptrace_sid;      /* SID of ptrace parent */
  38 };
  39
  40 struct inode_security_struct {
  41         unsigned long magic;           /* magic number for this module */
  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         struct avc_entry_ref avcr;     /* reference to object permissions */
  48         unsigned char initialized;     /* initialization flag */
  49         struct semaphore sem;
  50         unsigned char inherit;         /* inherit SID from parent entry */
  51 };
  52
  53 struct file_security_struct {
  54         unsigned long magic;            /* magic number for this module */
  55         struct file *file;              /* back pointer to file object */
  56         u32 sid;              /* SID of open file description */
  57         u32 fown_sid;         /* SID of file owner (for SIGIO) */
  58         struct avc_entry_ref avcr;      /* reference to fd permissions */
  59         struct avc_entry_ref inode_avcr;     /* reference to object permissions */
  60 };
  61
  62 struct superblock_security_struct {
  63         unsigned long magic;            /* magic number for this module */
  64         struct super_block *sb;         /* back pointer to sb object */
  65         struct list_head list;          /* list of superblock_security_struct */
  66         u32 sid;              /* SID of file system */
  67         u32 def_sid;                    /* default SID for labeling */
  68         unsigned int behavior;          /* labeling behavior */
  69         unsigned char initialized;      /* initialization flag */
  70         unsigned char proc;             /* proc fs */
  71         struct semaphore sem;
  72         struct list_head isec_head;
  73         spinlock_t isec_lock;
  74 };
  75
  76 struct msg_security_struct {
  77         unsigned long magic;            /* magic number for this module */
  78         struct msg_msg *msg;            /* back pointer */
  79         u32 sid;              /* SID of message */
  80         struct avc_entry_ref avcr;      /* reference to permissions */
  81 };
  82
  83 struct ipc_security_struct {
  84         unsigned long magic;            /* magic number for this module */
  85         struct kern_ipc_perm *ipc_perm; /* back pointer */
  86         u16 sclass;     /* security class of this object */
  87         u32 sid;              /* SID of IPC resource */
  88         struct avc_entry_ref avcr;      /* reference to permissions */
  89 };
  90
  91 struct bprm_security_struct {
  92         unsigned long magic;           /* magic number for this module */
  93         struct linux_binprm *bprm;     /* back pointer to bprm object */
  94         u32 sid;                       /* SID for transformed process */
  95         unsigned char set;
  96 };
  97
  98 struct netif_security_struct {
  99         struct net_device *dev;         /* back pointer */
 100         u32 if_sid;                     /* SID for this interface */
 101         u32 msg_sid;                    /* default SID for messages received on this interface */
 102         struct avc_entry_ref avcr;      /* reference to permissions */
 103 };
 104
 105 struct sk_security_struct {
 106         unsigned long magic;            /* magic number for this module */
 107         struct sock *sk;                /* back pointer to sk object */
 108         u32 peer_sid;                   /* SID of peer */
 109 };
 110
 111 extern int inode_security_set_sid(struct inode *inode, u32 sid);
 112
 113 #endif /* _SELINUX_OBJSEC_H_ */