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