Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * NSA Security-Enhanced Linux (SELinux) security module |
| 3 | * |
| 4 | * This file contains the SELinux security data structures for kernel objects. |
| 5 | * |
Stephen Smalley | 7efbb60 | 2017-08-17 13:32:36 -0400 | [diff] [blame] | 6 | * Author(s): Stephen Smalley, <sds@tycho.nsa.gov> |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 7 | * Chris Vance, <cvance@nai.com> |
| 8 | * Wayne Salamon, <wsalamon@nai.com> |
| 9 | * James Morris <jmorris@redhat.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Copyright (C) 2001,2002 Networks Associates Technology, Inc. |
| 12 | * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com> |
Daniel Jurgens | 3a976fa | 2017-05-19 15:48:56 +0300 | [diff] [blame] | 13 | * Copyright (C) 2016 Mellanox Technologies |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify |
| 16 | * it under the terms of the GNU General Public License version 2, |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 17 | * as published by the Free Software Foundation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | */ |
| 19 | #ifndef _SELINUX_OBJSEC_H_ |
| 20 | #define _SELINUX_OBJSEC_H_ |
| 21 | |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/sched.h> |
| 24 | #include <linux/fs.h> |
| 25 | #include <linux/binfmts.h> |
| 26 | #include <linux/in.h> |
Paul Moore | 9f2ad66 | 2006-11-17 17:38:53 -0500 | [diff] [blame] | 27 | #include <linux/spinlock.h> |
Casey Schaufler | bbd3662 | 2018-11-12 09:30:56 -0800 | [diff] [blame] | 28 | #include <linux/lsm_hooks.h> |
Paul Moore | cbe0d6e | 2014-09-10 17:09:57 -0400 | [diff] [blame] | 29 | #include <net/net_namespace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "flask.h" |
| 31 | #include "avc.h" |
| 32 | |
| 33 | struct task_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 34 | u32 osid; /* SID prior to last execve */ |
| 35 | u32 sid; /* current SID */ |
| 36 | u32 exec_sid; /* exec SID */ |
| 37 | u32 create_sid; /* fscreate SID */ |
| 38 | u32 keycreate_sid; /* keycreate SID */ |
| 39 | u32 sockcreate_sid; /* fscreate SID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | }; |
| 41 | |
Stephen Smalley | be0554c | 2017-01-09 10:07:31 -0500 | [diff] [blame] | 42 | /* |
| 43 | * get the subjective security ID of the current task |
| 44 | */ |
| 45 | static inline u32 current_sid(void) |
| 46 | { |
| 47 | const struct task_security_struct *tsec = current_security(); |
| 48 | |
| 49 | return tsec->sid; |
| 50 | } |
| 51 | |
Andreas Gruenbacher | 6f3be9f | 2015-12-24 11:09:40 -0500 | [diff] [blame] | 52 | enum label_initialized { |
Paul Moore | 4b57d6b | 2016-03-28 15:16:53 -0400 | [diff] [blame] | 53 | LABEL_INVALID, /* invalid or not initialized */ |
Andreas Gruenbacher | 9287aed | 2016-11-15 11:06:40 +0100 | [diff] [blame] | 54 | LABEL_INITIALIZED, /* initialized */ |
| 55 | LABEL_PENDING |
Andreas Gruenbacher | 6f3be9f | 2015-12-24 11:09:40 -0500 | [diff] [blame] | 56 | }; |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | struct inode_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 59 | struct inode *inode; /* back pointer to inode object */ |
Casey Schaufler | afb1cbe3 | 2018-09-21 17:19:29 -0700 | [diff] [blame^] | 60 | struct list_head list; /* list of inode_security_struct */ |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 61 | u32 task_sid; /* SID of creating task */ |
| 62 | u32 sid; /* SID of this object */ |
| 63 | u16 sclass; /* security class of this object */ |
| 64 | unsigned char initialized; /* initialization flag */ |
Andreas Gruenbacher | 9287aed | 2016-11-15 11:06:40 +0100 | [diff] [blame] | 65 | spinlock_t lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | struct file_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 69 | u32 sid; /* SID of open file description */ |
| 70 | u32 fown_sid; /* SID of file owner (for SIGIO) */ |
| 71 | u32 isid; /* SID of inode at the time of file open */ |
| 72 | u32 pseqno; /* Policy seqno at the time of file open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | }; |
| 74 | |
| 75 | struct superblock_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 76 | struct super_block *sb; /* back pointer to sb object */ |
Eric Paris | c312feb | 2006-07-10 04:43:53 -0700 | [diff] [blame] | 77 | u32 sid; /* SID of file system superblock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | u32 def_sid; /* default SID for labeling */ |
Eric Paris | c312feb | 2006-07-10 04:43:53 -0700 | [diff] [blame] | 79 | u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ |
Eric Paris | f936c6e | 2012-10-10 10:38:47 -0400 | [diff] [blame] | 80 | unsigned short behavior; /* labeling behavior */ |
Eric Paris | cfca030 | 2012-10-09 16:20:08 -0400 | [diff] [blame] | 81 | unsigned short flags; /* which mount options were specified */ |
Eric Paris | bc7e982 | 2006-09-25 23:32:02 -0700 | [diff] [blame] | 82 | struct mutex lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct list_head isec_head; |
| 84 | spinlock_t isec_lock; |
| 85 | }; |
| 86 | |
| 87 | struct msg_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 88 | u32 sid; /* SID of message */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | struct ipc_security_struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | u16 sclass; /* security class of this object */ |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 93 | u32 sid; /* SID of IPC resource */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | struct netif_security_struct { |
Paul Moore | cbe0d6e | 2014-09-10 17:09:57 -0400 | [diff] [blame] | 97 | struct net *ns; /* network namespace */ |
Paul Moore | e8bfdb9 | 2008-01-29 08:38:08 -0500 | [diff] [blame] | 98 | int ifindex; /* device index */ |
| 99 | u32 sid; /* SID for this interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | }; |
| 101 | |
Paul Moore | 224dfbd | 2008-01-29 08:38:13 -0500 | [diff] [blame] | 102 | struct netnode_security_struct { |
| 103 | union { |
| 104 | __be32 ipv4; /* IPv4 node address */ |
| 105 | struct in6_addr ipv6; /* IPv6 node address */ |
| 106 | } addr; |
| 107 | u32 sid; /* SID for this node */ |
| 108 | u16 family; /* address family */ |
| 109 | }; |
| 110 | |
Paul Moore | 3e112172 | 2008-04-10 10:48:14 -0400 | [diff] [blame] | 111 | struct netport_security_struct { |
| 112 | u32 sid; /* SID for this node */ |
| 113 | u16 port; /* port number */ |
| 114 | u8 protocol; /* transport protocol */ |
| 115 | }; |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | struct sk_security_struct { |
Paul Moore | 220deb9 | 2008-01-29 08:38:23 -0500 | [diff] [blame] | 118 | #ifdef CONFIG_NETLABEL |
Venkat Yekkirala | 7420ed2 | 2006-08-04 23:17:57 -0700 | [diff] [blame] | 119 | enum { /* NetLabel state */ |
| 120 | NLBL_UNSET = 0, |
| 121 | NLBL_REQUIRE, |
| 122 | NLBL_LABELED, |
Paul Moore | 948bf85 | 2008-10-10 10:16:32 -0400 | [diff] [blame] | 123 | NLBL_REQSKB, |
Paul Moore | 014ab19 | 2008-10-10 10:16:33 -0400 | [diff] [blame] | 124 | NLBL_CONNLABELED, |
Venkat Yekkirala | 7420ed2 | 2006-08-04 23:17:57 -0700 | [diff] [blame] | 125 | } nlbl_state; |
Paul Moore | 6c5b3fc | 2008-10-10 10:16:33 -0400 | [diff] [blame] | 126 | struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */ |
Venkat Yekkirala | 7420ed2 | 2006-08-04 23:17:57 -0700 | [diff] [blame] | 127 | #endif |
Paul Moore | 6c5b3fc | 2008-10-10 10:16:33 -0400 | [diff] [blame] | 128 | u32 sid; /* SID of this object */ |
| 129 | u32 peer_sid; /* SID of peer */ |
| 130 | u16 sclass; /* sock security class */ |
Richard Haines | d452930 | 2018-02-13 20:57:18 +0000 | [diff] [blame] | 131 | enum { /* SCTP association state */ |
| 132 | SCTP_ASSOC_UNSET = 0, |
| 133 | SCTP_ASSOC_SET, |
| 134 | } sctp_assoc_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | }; |
| 136 | |
Paul Moore | 5dbbaf2 | 2013-01-14 07:12:19 +0000 | [diff] [blame] | 137 | struct tun_security_struct { |
| 138 | u32 sid; /* SID for the tun device sockets */ |
| 139 | }; |
| 140 | |
Michael LeMay | d720024 | 2006-06-22 14:47:17 -0700 | [diff] [blame] | 141 | struct key_security_struct { |
Eric Paris | a936b79 | 2008-04-22 17:46:10 -0400 | [diff] [blame] | 142 | u32 sid; /* SID of key */ |
Michael LeMay | d720024 | 2006-06-22 14:47:17 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
Daniel Jurgens | 3a976fa | 2017-05-19 15:48:56 +0300 | [diff] [blame] | 145 | struct ib_security_struct { |
| 146 | u32 sid; /* SID of the queue pair or MAD agent */ |
| 147 | }; |
| 148 | |
Daniel Jurgens | 409dcf3 | 2017-05-19 15:48:59 +0300 | [diff] [blame] | 149 | struct pkey_security_struct { |
| 150 | u64 subnet_prefix; /* Port subnet prefix */ |
| 151 | u16 pkey; /* PKey number */ |
| 152 | u32 sid; /* SID of pkey */ |
| 153 | }; |
| 154 | |
Chenbo Feng | ec27c35 | 2017-10-18 13:00:25 -0700 | [diff] [blame] | 155 | struct bpf_security_struct { |
| 156 | u32 sid; /*SID of bpf obj creater*/ |
| 157 | }; |
| 158 | |
Casey Schaufler | bbd3662 | 2018-11-12 09:30:56 -0800 | [diff] [blame] | 159 | extern struct lsm_blob_sizes selinux_blob_sizes; |
Casey Schaufler | 0c6cfa6 | 2018-09-21 17:17:16 -0700 | [diff] [blame] | 160 | static inline struct task_security_struct *selinux_cred(const struct cred *cred) |
| 161 | { |
Casey Schaufler | bbd3662 | 2018-11-12 09:30:56 -0800 | [diff] [blame] | 162 | return cred->security + selinux_blob_sizes.lbs_cred; |
Casey Schaufler | 0c6cfa6 | 2018-09-21 17:17:16 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Casey Schaufler | bb6c6b0 | 2018-09-21 17:22:32 -0700 | [diff] [blame] | 165 | static inline struct file_security_struct *selinux_file(const struct file *file) |
| 166 | { |
Casey Schaufler | 33bf60c | 2018-11-12 12:02:49 -0800 | [diff] [blame] | 167 | return file->f_security + selinux_blob_sizes.lbs_file; |
Casey Schaufler | bb6c6b0 | 2018-09-21 17:22:32 -0700 | [diff] [blame] | 168 | } |
| 169 | |
Casey Schaufler | 80788c2 | 2018-09-21 17:19:11 -0700 | [diff] [blame] | 170 | static inline struct inode_security_struct *selinux_inode( |
| 171 | const struct inode *inode) |
| 172 | { |
Casey Schaufler | afb1cbe3 | 2018-09-21 17:19:29 -0700 | [diff] [blame^] | 173 | if (unlikely(!inode->i_security)) |
| 174 | return NULL; |
| 175 | return inode->i_security + selinux_blob_sizes.lbs_inode; |
Casey Schaufler | 80788c2 | 2018-09-21 17:19:11 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | #endif /* _SELINUX_OBJSEC_H_ */ |