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https://github.com/torvalds/linux
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6c5b3fc014
Previous work enabled the use of address based NetLabel selectors, which while highly useful, brought the potential for additional per-packet overhead when used. This patch attempts to mitigate some of that overhead by caching the NetLabel security attribute struct within the SELinux socket security structure. This should help eliminate the need to recreate the NetLabel secattr structure for each packet resulting in less overhead. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org>
150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
/*
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* SELinux interface to the NetLabel subsystem
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*
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* Author : Paul Moore <paul.moore@hp.com>
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*
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*/
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/*
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* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _SELINUX_NETLABEL_H_
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#define _SELINUX_NETLABEL_H_
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/net.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include "avc.h"
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#include "objsec.h"
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#ifdef CONFIG_NETLABEL
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void selinux_netlbl_cache_invalidate(void);
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void selinux_netlbl_err(struct sk_buff *skb, int error, int gateway);
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void selinux_netlbl_sk_security_free(struct sk_security_struct *ssec);
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void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec,
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int family);
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int selinux_netlbl_skbuff_getsid(struct sk_buff *skb,
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u16 family,
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u32 *type,
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u32 *sid);
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int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
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u16 family,
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u32 sid);
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void selinux_netlbl_inet_conn_established(struct sock *sk, u16 family);
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int selinux_netlbl_socket_post_create(struct socket *sock);
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int selinux_netlbl_inode_permission(struct inode *inode, int mask);
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int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
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struct sk_buff *skb,
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u16 family,
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struct avc_audit_data *ad);
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int selinux_netlbl_socket_setsockopt(struct socket *sock,
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int level,
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int optname);
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int selinux_netlbl_socket_connect(struct sock *sk, struct sockaddr *addr);
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#else
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static inline void selinux_netlbl_cache_invalidate(void)
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{
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return;
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}
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static inline void selinux_netlbl_err(struct sk_buff *skb,
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int error,
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int gateway)
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{
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return;
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}
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static inline void selinux_netlbl_sk_security_free(
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struct sk_security_struct *ssec)
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{
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return;
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}
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static inline void selinux_netlbl_sk_security_reset(
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struct sk_security_struct *ssec,
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int family)
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{
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return;
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}
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static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb,
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u16 family,
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u32 *type,
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u32 *sid)
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{
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*type = NETLBL_NLTYPE_NONE;
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*sid = SECSID_NULL;
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return 0;
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}
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static inline int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
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u16 family,
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u32 sid)
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{
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return 0;
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}
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static inline int selinux_netlbl_conn_setsid(struct sock *sk,
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struct sockaddr *addr)
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{
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return 0;
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}
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static inline void selinux_netlbl_inet_conn_established(struct sock *sk,
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u16 family)
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{
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return;
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}
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static inline int selinux_netlbl_socket_post_create(struct socket *sock)
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{
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return 0;
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}
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static inline int selinux_netlbl_inode_permission(struct inode *inode,
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int mask)
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{
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return 0;
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}
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static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
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struct sk_buff *skb,
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u16 family,
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struct avc_audit_data *ad)
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{
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return 0;
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}
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static inline int selinux_netlbl_socket_setsockopt(struct socket *sock,
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int level,
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int optname)
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{
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return 0;
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}
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static inline int selinux_netlbl_socket_connect(struct sock *sk,
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struct sockaddr *addr)
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{
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return 0;
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}
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#endif /* CONFIG_NETLABEL */
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#endif
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