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 <net/net_namespace.h>
  28#include "flask.h"
  29#include "avc.h"
  30
  31struct task_security_struct {
  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};
  39
  40enum label_initialized {
  41        LABEL_INVALID,          /* invalid or not initialized */
  42        LABEL_INITIALIZED       /* initialized */
  43};
  44
  45struct inode_security_struct {
  46        struct inode *inode;    /* back pointer to inode object */
  47        union {
  48                struct list_head list;  /* list of inode_security_struct */
  49                struct rcu_head rcu;    /* for freeing the inode_security_struct */
  50        };
  51        u32 task_sid;           /* SID of creating task */
  52        u32 sid;                /* SID of this object */
  53        u16 sclass;             /* security class of this object */
  54        unsigned char initialized;      /* initialization flag */
  55        struct mutex lock;
  56};
  57
  58struct file_security_struct {
  59        u32 sid;                /* SID of open file description */
  60        u32 fown_sid;           /* SID of file owner (for SIGIO) */
  61        u32 isid;               /* SID of inode at the time of file open */
  62        u32 pseqno;             /* Policy seqno at the time of file open */
  63};
  64
  65struct superblock_security_struct {
  66        struct super_block *sb;         /* back pointer to sb object */
  67        u32 sid;                        /* SID of file system superblock */
  68        u32 def_sid;                    /* default SID for labeling */
  69        u32 mntpoint_sid;               /* SECURITY_FS_USE_MNTPOINT context for files */
  70        unsigned short behavior;        /* labeling behavior */
  71        unsigned short flags;           /* which mount options were specified */
  72        struct mutex lock;
  73        struct list_head isec_head;
  74        spinlock_t isec_lock;
  75};
  76
  77struct msg_security_struct {
  78        u32 sid;        /* SID of message */
  79};
  80
  81struct ipc_security_struct {
  82        u16 sclass;     /* security class of this object */
  83        u32 sid;        /* SID of IPC resource */
  84};
  85
  86struct netif_security_struct {
  87        struct net *ns;                 /* network namespace */
  88        int ifindex;                    /* device index */
  89        u32 sid;                        /* SID for this interface */
  90};
  91
  92struct netnode_security_struct {
  93        union {
  94                __be32 ipv4;            /* IPv4 node address */
  95                struct in6_addr ipv6;   /* IPv6 node address */
  96        } addr;
  97        u32 sid;                        /* SID for this node */
  98        u16 family;                     /* address family */
  99};
 100
 101struct netport_security_struct {
 102        u32 sid;                        /* SID for this node */
 103        u16 port;                       /* port number */
 104        u8 protocol;                    /* transport protocol */
 105};
 106
 107struct sk_security_struct {
 108#ifdef CONFIG_NETLABEL
 109        enum {                          /* NetLabel state */
 110                NLBL_UNSET = 0,
 111                NLBL_REQUIRE,
 112                NLBL_LABELED,
 113                NLBL_REQSKB,
 114                NLBL_CONNLABELED,
 115        } nlbl_state;
 116        struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
 117#endif
 118        u32 sid;                        /* SID of this object */
 119        u32 peer_sid;                   /* SID of peer */
 120        u16 sclass;                     /* sock security class */
 121};
 122
 123struct tun_security_struct {
 124        u32 sid;                        /* SID for the tun device sockets */
 125};
 126
 127struct key_security_struct {
 128        u32 sid;        /* SID of key */
 129};
 130
 131extern unsigned int selinux_checkreqprot;
 132
 133#endif /* _SELINUX_OBJSEC_H_ */
 134