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        LABEL_PENDING
  44};
  45
  46struct inode_security_struct {
  47        struct inode *inode;    /* back pointer to inode object */
  48        union {
  49                struct list_head list;  /* list of inode_security_struct */
  50                struct rcu_head rcu;    /* for freeing the inode_security_struct */
  51        };
  52        u32 task_sid;           /* SID of creating task */
  53        u32 sid;                /* SID of this object */
  54        u16 sclass;             /* security class of this object */
  55        unsigned char initialized;      /* initialization flag */
  56        spinlock_t lock;
  57};
  58
  59struct file_security_struct {
  60        u32 sid;                /* SID of open file description */
  61        u32 fown_sid;           /* SID of file owner (for SIGIO) */
  62        u32 isid;               /* SID of inode at the time of file open */
  63        u32 pseqno;             /* Policy seqno at the time of file open */
  64};
  65
  66struct superblock_security_struct {
  67        struct super_block *sb;         /* back pointer to sb object */
  68        u32 sid;                        /* SID of file system superblock */
  69        u32 def_sid;                    /* default SID for labeling */
  70        u32 mntpoint_sid;               /* SECURITY_FS_USE_MNTPOINT context for files */
  71        unsigned short behavior;        /* labeling behavior */
  72        unsigned short flags;           /* which mount options were specified */
  73        struct mutex lock;
  74        struct list_head isec_head;
  75        spinlock_t isec_lock;
  76};
  77
  78struct msg_security_struct {
  79        u32 sid;        /* SID of message */
  80};
  81
  82struct ipc_security_struct {
  83        u16 sclass;     /* security class of this object */
  84        u32 sid;        /* SID of IPC resource */
  85};
  86
  87struct netif_security_struct {
  88        struct net *ns;                 /* network namespace */
  89        int ifindex;                    /* device index */
  90        u32 sid;                        /* SID for this interface */
  91};
  92
  93struct netnode_security_struct {
  94        union {
  95                __be32 ipv4;            /* IPv4 node address */
  96                struct in6_addr ipv6;   /* IPv6 node address */
  97        } addr;
  98        u32 sid;                        /* SID for this node */
  99        u16 family;                     /* address family */
 100};
 101
 102struct netport_security_struct {
 103        u32 sid;                        /* SID for this node */
 104        u16 port;                       /* port number */
 105        u8 protocol;                    /* transport protocol */
 106};
 107
 108struct sk_security_struct {
 109#ifdef CONFIG_NETLABEL
 110        enum {                          /* NetLabel state */
 111                NLBL_UNSET = 0,
 112                NLBL_REQUIRE,
 113                NLBL_LABELED,
 114                NLBL_REQSKB,
 115                NLBL_CONNLABELED,
 116        } nlbl_state;
 117        struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
 118#endif
 119        u32 sid;                        /* SID of this object */
 120        u32 peer_sid;                   /* SID of peer */
 121        u16 sclass;                     /* sock security class */
 122};
 123
 124struct tun_security_struct {
 125        u32 sid;                        /* SID for the tun device sockets */
 126};
 127
 128struct key_security_struct {
 129        u32 sid;        /* SID of key */
 130};
 131
 132extern unsigned int selinux_checkreqprot;
 133
 134#endif /* _SELINUX_OBJSEC_H_ */
 135