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