LXR linux/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 <linux/spinlock.h>
  27#include "flask.h"
  28#include "avc.h"
  29
  30struct 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};
  38
  39struct inode_security_struct {
  40        struct inode *inode;    /* back pointer to inode object */
  41        union {
  42                struct list_head list;  /* list of inode_security_struct */
  43                struct rcu_head rcu;    /* for freeing the inode_security_struct */
  44        };
  45        u32 task_sid;           /* SID of creating task */
  46        u32 sid;                /* SID of this object */
  47        u16 sclass;             /* security class of this object */
  48        unsigned char initialized;      /* initialization flag */
  49        struct mutex lock;
  50};
  51
  52struct file_security_struct {
  53        u32 sid;                /* SID of open file description */
  54        u32 fown_sid;           /* SID of file owner (for SIGIO) */
  55        u32 isid;               /* SID of inode at the time of file open */
  56        u32 pseqno;             /* Policy seqno at the time of file open */
  57};
  58
  59struct superblock_security_struct {
  60        struct super_block *sb;         /* back pointer to sb object */
  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 short behavior;        /* labeling behavior */
  65        unsigned short flags;           /* which mount options were specified */
  66        struct mutex lock;
  67        struct list_head isec_head;
  68        spinlock_t isec_lock;
  69};
  70
  71struct msg_security_struct {
  72        u32 sid;        /* SID of message */
  73};
  74
  75struct ipc_security_struct {
  76        u16 sclass;     /* security class of this object */
  77        u32 sid;        /* SID of IPC resource */
  78};
  79
  80struct netif_security_struct {
  81        int ifindex;                    /* device index */
  82        u32 sid;                        /* SID for this interface */
  83};
  84
  85struct netnode_security_struct {
  86        union {
  87                __be32 ipv4;            /* IPv4 node address */
  88                struct in6_addr ipv6;   /* IPv6 node address */
  89        } addr;
  90        u32 sid;                        /* SID for this node */
  91        u16 family;                     /* address family */
  92};
  93
  94struct netport_security_struct {
  95        u32 sid;                        /* SID for this node */
  96        u16 port;                       /* port number */
  97        u8 protocol;                    /* transport protocol */
  98};
  99
 100struct sk_security_struct {
 101#ifdef CONFIG_NETLABEL
 102        enum {                          /* NetLabel state */
 103                NLBL_UNSET = 0,
 104                NLBL_REQUIRE,
 105                NLBL_LABELED,
 106                NLBL_REQSKB,
 107                NLBL_CONNLABELED,
 108        } nlbl_state;
 109        struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
 110#endif
 111        u32 sid;                        /* SID of this object */
 112        u32 peer_sid;                   /* SID of peer */
 113        u16 sclass;                     /* sock security class */
 114};
 115
 116struct tun_security_struct {
 117        u32 sid;                        /* SID for the tun device sockets */
 118};
 119
 120struct key_security_struct {
 121        u32 sid;        /* SID of key */
 122};
 123
 124extern unsigned int selinux_checkreqprot;
 125
 126#endif /* _SELINUX_OBJSEC_H_ */
 127