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secmark: make secmark object handling generic

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Right now secmark has lots of direct selinux calls.  Use all LSM calls and
remove all SELinux specific knowledge.  The only SELinux specific knowledge
we leave is the mode.  The only point is to make sure that other LSMs at
least test this generic code before they assume it works.  (They may also
have to make changes if they do not represent labels as strings)

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Eric Paris
2010-10-13 16:24:41 -04:00
committed by James Morris
parent 15714f7b58
commit 2606fd1fa5
10 changed files with 104 additions and 141 deletions
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24
security/selinux/hooks.c
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@@ -4279,6 +4279,27 @@ static void selinux_inet_conn_established(struct sock *sk, struct sk_buff *skb)
selinux_skb_peerlbl_sid(skb, family, &sksec->peer_sid);
}
static int selinux_secmark_relabel_packet(u32 sid)
{
const struct task_security_struct *__tsec;
u32 tsid;
__tsec = current_security();
tsid = __tsec->sid;
return avc_has_perm(tsid, sid, SECCLASS_PACKET, PACKET__RELABELTO, NULL);
}
static void selinux_secmark_refcount_inc(void)
{
atomic_inc(&selinux_secmark_refcount);
}
static void selinux_secmark_refcount_dec(void)
{
atomic_dec(&selinux_secmark_refcount);
}
static void selinux_req_classify_flow(const struct request_sock *req,
struct flowi *fl)
{
@@ -5533,6 +5554,9 @@ static struct security_operations selinux_ops = {
.inet_conn_request = selinux_inet_conn_request,
.inet_csk_clone = selinux_inet_csk_clone,
.inet_conn_established = selinux_inet_conn_established,
.secmark_relabel_packet = selinux_secmark_relabel_packet,
.secmark_refcount_inc = selinux_secmark_refcount_inc,
.secmark_refcount_dec = selinux_secmark_refcount_dec,
.req_classify_flow = selinux_req_classify_flow,
.tun_dev_create = selinux_tun_dev_create,
.tun_dev_post_create = selinux_tun_dev_post_create,