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selinux: provide socketpair callback 

Make sure to implement the new socketpair callback so the SO_PEERSEC
call on socketpair(2)s will return correct information.

Acked-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
This commit is contained in:
David Herrmann 2018-05-04 16:28:21 +02:00 committed by James Morris
parent d47cd9450d
commit 0b811db2cb
1 changed files with 13 additions and 0 deletions
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13
security/selinux/hooks.c
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@ -4569,6 +4569,18 @@ static int selinux_socket_post_create(struct socket *sock, int family,
return err;
}
static int selinux_socket_socketpair(struct socket *socka,
struct socket *sockb)
{
struct sk_security_struct *sksec_a = socka->sk->sk_security;
struct sk_security_struct *sksec_b = sockb->sk->sk_security;
sksec_a->peer_sid = sksec_b->sid;
sksec_b->peer_sid = sksec_a->sid;
return 0;
}
/* Range of port numbers used to automatically bind.
Need to determine whether we should perform a name_bind
permission check between the socket and the port number. */
@ -6999,6 +7011,7 @@ static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(socket_create, selinux_socket_create),
LSM_HOOK_INIT(socket_post_create, selinux_socket_post_create),
LSM_HOOK_INIT(socket_socketpair, selinux_socket_socketpair),
LSM_HOOK_INIT(socket_bind, selinux_socket_bind),
LSM_HOOK_INIT(socket_connect, selinux_socket_connect),
LSM_HOOK_INIT(socket_listen, selinux_socket_listen),