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selinux: Set socket NetLabel based on connection endpoint

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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 solve that by applying NetLabel socket labels
when sockets are connect()'d.  This should alleviate the per-packet NetLabel
labeling for all connected sockets (yes, it even works for connected DGRAM
sockets).

Signed-off-by: Paul Moore <paul.moore@hp.com>
Reviewed-by: James Morris <jmorris@namei.org>
This commit is contained in:
Paul Moore 2008-10-10 10:16:33 -04:00
parent 948bf85c1b
commit 014ab19a69
8 changed files with 311 additions and 37 deletions
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19
security/selinux/include/netlabel.h
View file

@ -52,7 +52,7 @@ int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
u16 family,
u32 sid);
void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock);
void selinux_netlbl_inet_conn_established(struct sock *sk, u16 family);
int selinux_netlbl_socket_post_create(struct socket *sock);
int selinux_netlbl_inode_permission(struct inode *inode, int mask);
int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
@ -62,6 +62,8 @@ int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
int selinux_netlbl_socket_setsockopt(struct socket *sock,
int level,
int optname);
int selinux_netlbl_socket_connect(struct sock *sk, struct sockaddr *addr);
#else
static inline void selinux_netlbl_cache_invalidate(void)
{
@ -98,8 +100,14 @@ static inline int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
return 0;
}
static inline void selinux_netlbl_sock_graft(struct sock *sk,
struct socket *sock)
static inline int selinux_netlbl_conn_setsid(struct sock *sk,
struct sockaddr *addr)
{
return 0;
}
static inline void selinux_netlbl_inet_conn_established(struct sock *sk,
u16 family)
{
return;
}
@ -125,6 +133,11 @@ static inline int selinux_netlbl_socket_setsockopt(struct socket *sock,
{
return 0;
}
static inline int selinux_netlbl_socket_connect(struct sock *sk,
struct sockaddr *addr)
{
return 0;
}
#endif /* CONFIG_NETLABEL */
#endif