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xfrm: Report user triggered expirations against the users socket

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When a policy expiration is triggered from user space the request
travels through km_policy_expired and ultimately into
xfrm_exp_policy_notify which calls build_polexpire.  build_polexpire
uses the netlink port passed to km_policy_expired as the source port for
the netlink message it builds.

When a state expiration is triggered from user space the request travles
through km_state_expired and ultimately into xfrm_exp_state_notify which
calls build_expire.  build_expire uses the netlink port passed to
km_state_expired as the source port for the netlink message it builds.

Pass nlh->nlmsg_pid from the user generated netlink message that
requested the expiration to km_policy_expired and km_state_expired
instead of current->pid which is not a netlink port number.

Cc: Jamal Hadi Salim <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
Acked-by: Jamal Hadi Salim <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric W. Biederman 2012-09-07 21:17:17 +00:00 • committed by David S. Miller
commit c6bb8136c9
1 changed files with 2 additions and 2 deletions
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4
net/xfrm/xfrm_user.c
View file

@ -1930,7 +1930,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
// reset the timers here?
WARN(1, "Dont know what to do with soft policy expire\n");
}
km_policy_expired(xp, p->dir, up->hard, current->pid);
km_policy_expired(xp, p->dir, up->hard, nlh->nlmsg_pid);
out:
xfrm_pol_put(xp);
@ -1958,7 +1958,7 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
err = -EINVAL;
if (x->km.state != XFRM_STATE_VALID)
goto out;
km_state_expired(x, ue->hard, current->pid);
km_state_expired(x, ue->hard, nlh->nlmsg_pid);
if (ue->hard) {
uid_t loginuid = audit_get_loginuid(current);