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
  31 struct 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
  40 enum label_initialized {
  41         LABEL_MISSING,          /* not initialized */
  42         LABEL_INITIALIZED,      /* inizialized */
  43         LABEL_INVALID           /* invalid */
  44 };
  45
  46 struct 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         struct mutex lock;
  57 };
  58
  59 struct 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
  66 struct 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
  78 struct msg_security_struct {
  79         u32 sid;        /* SID of message */
  80 };
  81
  82 struct ipc_security_struct {
  83         u16 sclass;     /* security class of this object */
  84         u32 sid;        /* SID of IPC resource */
  85 };
  86
  87 struct netif_security_struct {
  88         struct net *ns;                 /* network namespace */
  89         int ifindex;                    /* device index */
  90         u32 sid;                        /* SID for this interface */
  91 };
  92
  93 struct 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
 102 struct netport_security_struct {
 103         u32 sid;                        /* SID for this node */
 104         u16 port;                       /* port number */
 105         u8 protocol;                    /* transport protocol */
 106 };
 107
 108 struct 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
 124 struct tun_security_struct {
 125         u32 sid;                        /* SID for the tun device sockets */
 126 };
 127
 128 struct key_security_struct {
 129         u32 sid;        /* SID of key */
 130 };
 131
 132 extern unsigned int selinux_checkreqprot;
 133
 134 #endif /* _SELINUX_OBJSEC_H_ */