1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * NSA Security-Enhanced Linux (SELinux) security module
5 * This file contains the SELinux security data structures for kernel objects.
7 * Author(s): Stephen Smalley, <sds@tycho.nsa.gov>
8 * Chris Vance, <cvance@nai.com>
9 * Wayne Salamon, <wsalamon@nai.com>
10 * James Morris <jmorris@redhat.com>
12 * Copyright (C) 2001,2002 Networks Associates Technology, Inc.
13 * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
14 * Copyright (C) 2016 Mellanox Technologies
16 #ifndef _SELINUX_OBJSEC_H_
17 #define _SELINUX_OBJSEC_H_
19 #include <linux/list.h>
20 #include <linux/sched.h>
22 #include <linux/binfmts.h>
24 #include <linux/spinlock.h>
25 #include <linux/lsm_hooks.h>
26 #include <linux/msg.h>
27 #include <net/net_namespace.h>
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 */
41 * get the subjective security ID of the current task
43 static inline u32 current_sid(void)
45 const struct task_security_struct *tsec = current_security();
50 enum label_initialized {
51 LABEL_INVALID, /* invalid or not initialized */
52 LABEL_INITIALIZED, /* initialized */
56 struct inode_security_struct {
57 struct inode *inode; /* back pointer to inode object */
58 struct list_head list; /* list of inode_security_struct */
59 u32 task_sid; /* SID of creating task */
60 u32 sid; /* SID of this object */
61 u16 sclass; /* security class of this object */
62 unsigned char initialized; /* initialization flag */
66 struct file_security_struct {
67 u32 sid; /* SID of open file description */
68 u32 fown_sid; /* SID of file owner (for SIGIO) */
69 u32 isid; /* SID of inode at the time of file open */
70 u32 pseqno; /* Policy seqno at the time of file open */
73 struct superblock_security_struct {
74 struct super_block *sb; /* back pointer to sb object */
75 u32 sid; /* SID of file system superblock */
76 u32 def_sid; /* default SID for labeling */
77 u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */
78 unsigned short behavior; /* labeling behavior */
79 unsigned short flags; /* which mount options were specified */
81 struct list_head isec_head;
85 struct msg_security_struct {
86 u32 sid; /* SID of message */
89 struct ipc_security_struct {
90 u16 sclass; /* security class of this object */
91 u32 sid; /* SID of IPC resource */
94 struct netif_security_struct {
95 struct net *ns; /* network namespace */
96 int ifindex; /* device index */
97 u32 sid; /* SID for this interface */
100 struct netnode_security_struct {
102 __be32 ipv4; /* IPv4 node address */
103 struct in6_addr ipv6; /* IPv6 node address */
105 u32 sid; /* SID for this node */
106 u16 family; /* address family */
109 struct netport_security_struct {
110 u32 sid; /* SID for this node */
111 u16 port; /* port number */
112 u8 protocol; /* transport protocol */
115 struct sk_security_struct {
116 #ifdef CONFIG_NETLABEL
117 enum { /* NetLabel state */
124 struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
126 u32 sid; /* SID of this object */
127 u32 peer_sid; /* SID of peer */
128 u16 sclass; /* sock security class */
129 enum { /* SCTP association state */
130 SCTP_ASSOC_UNSET = 0,
135 struct tun_security_struct {
136 u32 sid; /* SID for the tun device sockets */
139 struct key_security_struct {
140 u32 sid; /* SID of key */
143 struct ib_security_struct {
144 u32 sid; /* SID of the queue pair or MAD agent */
147 struct pkey_security_struct {
148 u64 subnet_prefix; /* Port subnet prefix */
149 u16 pkey; /* PKey number */
150 u32 sid; /* SID of pkey */
153 struct bpf_security_struct {
154 u32 sid; /*SID of bpf obj creater*/
157 extern struct lsm_blob_sizes selinux_blob_sizes;
158 static inline struct task_security_struct *selinux_cred(const struct cred *cred)
160 return cred->security + selinux_blob_sizes.lbs_cred;
163 static inline struct file_security_struct *selinux_file(const struct file *file)
165 return file->f_security + selinux_blob_sizes.lbs_file;
168 static inline struct inode_security_struct *selinux_inode(
169 const struct inode *inode)
171 if (unlikely(!inode->i_security))
173 return inode->i_security + selinux_blob_sizes.lbs_inode;
176 static inline struct msg_security_struct *selinux_msg_msg(
177 const struct msg_msg *msg_msg)
179 return msg_msg->security + selinux_blob_sizes.lbs_msg_msg;
182 static inline struct ipc_security_struct *selinux_ipc(
183 const struct kern_ipc_perm *ipc)
185 return ipc->security + selinux_blob_sizes.lbs_ipc;
188 #endif /* _SELINUX_OBJSEC_H_ */