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SELinux: peer secid consolidation for external network labeling

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Now that labeled IPsec makes use of the peer_sid field in the
sk_security_struct we can remove a lot of the special cases between labeled
IPsec and NetLabel.  In addition, create a new function,
security_skb_extlbl_sid(), which we can use in several places to get the
security context of the packet's external label which allows us to further
simplify the code in a few places.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Paul Moore
2006-11-17 17:38:54 -05:00
committed by David S. Miller
parent 9f2ad66509
commit 3de4bab5b9
6 changed files with 52 additions and 150 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
security/selinux/include/security.h
View File

@@ -8,6 +8,7 @@
#ifndef _SELINUX_SECURITY_H_
#define _SELINUX_SECURITY_H_
#include <linux/skbuff.h>
#include "flask.h"
#define SECSID_NULL 0x00000000 /* unspecified SID */
@@ -80,6 +81,8 @@ int security_netif_sid(char *name, u32 *if_sid,
int security_node_sid(u16 domain, void *addr, u32 addrlen,
u32 *out_sid);
void security_skb_extlbl_sid(struct sk_buff *skb, u32 base_sid, u32 *sid);
int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
u16 tclass);

28
security/selinux/include/selinux_netlabel.h
View File

@@ -38,14 +38,12 @@
#ifdef CONFIG_NETLABEL
void selinux_netlbl_cache_invalidate(void);
int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, u32 base_sid, u32 *sid);
int selinux_netlbl_socket_post_create(struct socket *sock);
void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock);
u32 selinux_netlbl_inet_conn_request(struct sk_buff *skb, u32 sock_sid);
int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
struct sk_buff *skb,
struct avc_audit_data *ad);
u32 selinux_netlbl_socket_getpeersec_stream(struct socket *sock);
u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb);
void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec,
int family);
void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec,
@@ -62,6 +60,14 @@ static inline void selinux_netlbl_cache_invalidate(void)
return;
}
static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb,
u32 base_sid,
u32 *sid)
{
*sid = SECSID_NULL;
return 0;
}
static inline int selinux_netlbl_socket_post_create(struct socket *sock)
{
return 0;
@@ -73,12 +79,6 @@ static inline void selinux_netlbl_sock_graft(struct sock *sk,
return;
}
static inline u32 selinux_netlbl_inet_conn_request(struct sk_buff *skb,
u32 sock_sid)
{
return SECSID_NULL;
}
static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
struct sk_buff *skb,
struct avc_audit_data *ad)
@@ -86,16 +86,6 @@ static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
return 0;
}
static inline u32 selinux_netlbl_socket_getpeersec_stream(struct socket *sock)
{
return SECSID_NULL;
}
static inline u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb)
{
return SECSID_NULL;
}
static inline void selinux_netlbl_sk_security_reset(
struct sk_security_struct *ssec,
int family)

5
security/selinux/include/xfrm.h
View File

@@ -36,7 +36,6 @@ int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
struct avc_audit_data *ad);
int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
struct avc_audit_data *ad, u8 proto);
u32 selinux_socket_getpeer_dgram(struct sk_buff *skb);
int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
#else
static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
@@ -51,10 +50,6 @@ static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
return 0;
}
static inline int selinux_socket_getpeer_dgram(struct sk_buff *skb)
{
return SECSID_NULL;
}
static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
{
*sid = SECSID_NULL;