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authorPaul Moore <pmoore@redhat.com>2013-07-23 17:38:40 -0400
committerEric Paris <eparis@redhat.com>2013-07-25 13:02:03 -0400
commite21936958000a4f2298193b3875b707fbcbc8f7b (patch)
treee96cc9c2e455a629e10fc8bbb2b5bbdc099e4301 /security/selinux/xfrm.c
parent4baabeec2a061fe771f9fcc01c61204a2ee2f608 (diff)
selinux: cleanup selinux_xfrm_decode_session()
Some basic simplification. Signed-off-by: Paul Moore <pmoore@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'security/selinux/xfrm.c')
-rw-r--r--security/selinux/xfrm.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 00801cef1dd9..425b9f91d755 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -215,34 +215,35 @@ int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
*/
int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
{
+ u32 sid_session = SECSID_NULL;
struct sec_path *sp;
- *sid = SECSID_NULL;
-
if (skb == NULL)
- return 0;
+ goto out;
sp = skb->sp;
if (sp) {
- int i, sid_set = 0;
+ int i;
- for (i = sp->len-1; i >= 0; i--) {
+ for (i = sp->len - 1; i >= 0; i--) {
struct xfrm_state *x = sp->xvec[i];
if (selinux_authorizable_xfrm(x)) {
struct xfrm_sec_ctx *ctx = x->security;
- if (!sid_set) {
- *sid = ctx->ctx_sid;
- sid_set = 1;
-
+ if (sid_session == SECSID_NULL) {
+ sid_session = ctx->ctx_sid;
if (!ckall)
- break;
- } else if (*sid != ctx->ctx_sid)
+ goto out;
+ } else if (sid_session != ctx->ctx_sid) {
+ *sid = SECSID_NULL;
return -EINVAL;
+ }
}
}
}
+out:
+ *sid = sid_session;
return 0;
}