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cbe0d6e879
While SELinux largely ignores namespaces, for good reason, there are
some places where it needs to at least be aware of namespaces in order
to function correctly. Network namespaces are one example. Basic
awareness of network namespaces are necessary in order to match a
network interface's index number to an actual network device.
This patch corrects a problem with network interfaces added to a
non-init namespace, and can be reproduced with the following commands:
[NOTE: the NetLabel configuration is here only to active the dynamic
networking controls ]
# netlabelctl unlbl add default address:0.0.0.0/0 \
label:system_u:object_r:unlabeled_t:s0
# netlabelctl unlbl add default address:::/0 \
label:system_u:object_r:unlabeled_t:s0
# netlabelctl cipsov4 add pass doi:100 tags:1
# netlabelctl map add domain:lspp_test_netlabel_t \
protocol:cipsov4,100
# ip link add type veth
# ip netns add myns
# ip link set veth1 netns myns
# ip a add dev veth0 10.250.13.100/24
# ip netns exec myns ip a add dev veth1 10.250.13.101/24
# ip l set veth0 up
# ip netns exec myns ip l set veth1 up
# ping -c 1 10.250.13.101
# ip netns exec myns ping -c 1 10.250.13.100
Reported-by: Jiri Jaburek <jjaburek@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*
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* NSA Security-Enhanced Linux (SELinux) security module
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*
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* This file contains the SELinux security data structures for kernel objects.
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*
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* Author(s): Stephen Smalley, <sds@epoch.ncsc.mil>
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* Chris Vance, <cvance@nai.com>
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* Wayne Salamon, <wsalamon@nai.com>
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* James Morris <jmorris@redhat.com>
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*
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* Copyright (C) 2001,2002 Networks Associates Technology, Inc.
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* Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2,
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* as published by the Free Software Foundation.
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*/
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#ifndef _SELINUX_OBJSEC_H_
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#define _SELINUX_OBJSEC_H_
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#include <linux/list.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/binfmts.h>
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#include <linux/in.h>
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#include <linux/spinlock.h>
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#include <net/net_namespace.h>
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#include "flask.h"
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#include "avc.h"
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struct task_security_struct {
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u32 osid; /* SID prior to last execve */
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u32 sid; /* current SID */
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u32 exec_sid; /* exec SID */
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u32 create_sid; /* fscreate SID */
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u32 keycreate_sid; /* keycreate SID */
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u32 sockcreate_sid; /* fscreate SID */
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};
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struct inode_security_struct {
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struct inode *inode; /* back pointer to inode object */
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union {
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struct list_head list; /* list of inode_security_struct */
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struct rcu_head rcu; /* for freeing the inode_security_struct */
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};
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u32 task_sid; /* SID of creating task */
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u32 sid; /* SID of this object */
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u16 sclass; /* security class of this object */
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unsigned char initialized; /* initialization flag */
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struct mutex lock;
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};
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struct file_security_struct {
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u32 sid; /* SID of open file description */
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u32 fown_sid; /* SID of file owner (for SIGIO) */
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u32 isid; /* SID of inode at the time of file open */
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u32 pseqno; /* Policy seqno at the time of file open */
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};
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struct superblock_security_struct {
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struct super_block *sb; /* back pointer to sb object */
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u32 sid; /* SID of file system superblock */
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u32 def_sid; /* default SID for labeling */
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u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */
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unsigned short behavior; /* labeling behavior */
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unsigned short flags; /* which mount options were specified */
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struct mutex lock;
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struct list_head isec_head;
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spinlock_t isec_lock;
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};
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struct msg_security_struct {
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u32 sid; /* SID of message */
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};
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struct ipc_security_struct {
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u16 sclass; /* security class of this object */
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u32 sid; /* SID of IPC resource */
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};
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struct netif_security_struct {
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struct net *ns; /* network namespace */
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int ifindex; /* device index */
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u32 sid; /* SID for this interface */
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};
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struct netnode_security_struct {
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union {
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__be32 ipv4; /* IPv4 node address */
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struct in6_addr ipv6; /* IPv6 node address */
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} addr;
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u32 sid; /* SID for this node */
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u16 family; /* address family */
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};
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struct netport_security_struct {
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u32 sid; /* SID for this node */
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u16 port; /* port number */
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u8 protocol; /* transport protocol */
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};
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struct sk_security_struct {
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#ifdef CONFIG_NETLABEL
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enum { /* NetLabel state */
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NLBL_UNSET = 0,
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NLBL_REQUIRE,
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NLBL_LABELED,
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NLBL_REQSKB,
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NLBL_CONNLABELED,
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} nlbl_state;
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struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */
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#endif
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u32 sid; /* SID of this object */
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u32 peer_sid; /* SID of peer */
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u16 sclass; /* sock security class */
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};
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struct tun_security_struct {
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u32 sid; /* SID for the tun device sockets */
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};
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struct key_security_struct {
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u32 sid; /* SID of key */
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};
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extern unsigned int selinux_checkreqprot;
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#endif /* _SELINUX_OBJSEC_H_ */
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