void
mac_ifnet_create(struct ifnet *ifp)
{
if (mac_policy_count == 0)
return;
MAC_IFNET_LOCK(ifp);
MAC_POLICY_PERFORM_NOSLEEP(ifnet_create, ifp, ifp->if_label);
MAC_IFNET_UNLOCK(ifp);
}
void
mac_netatalk_aarp_send(struct ifnet *ifp, struct mbuf *m)
{
struct label *mlabel;
if (mac_policy_count == 0)
return;
mlabel = mac_mbuf_to_label(m);
MAC_IFNET_LOCK(ifp);
MAC_POLICY_PERFORM_NOSLEEP(netatalk_aarp_send, ifp, ifp->if_label, m,
mlabel);
MAC_IFNET_UNLOCK(ifp);
}
void
mac_ifnet_create_mbuf(struct ifnet *ifp, struct mbuf *m)
{
struct label *label;
if (mac_policy_count == 0)
return;
label = mac_mbuf_to_label(m);
MAC_IFNET_LOCK(ifp);
MAC_POLICY_PERFORM_NOSLEEP(ifnet_create_mbuf, ifp, ifp->if_label, m,
label);
MAC_IFNET_UNLOCK(ifp);
}
int
mac_bpfdesc_check_receive(struct bpf_d *d, struct ifnet *ifp)
{
int error;
BPFD_LOCK_ASSERT(d);
if (mac_policy_count == 0)
return (0);
MAC_IFNET_LOCK(ifp);
MAC_POLICY_CHECK_NOSLEEP(bpfdesc_check_receive, d, d->bd_label, ifp,
ifp->if_label);
MAC_CHECK_PROBE2(bpfdesc_check_receive, error, d, ifp);
MAC_IFNET_UNLOCK(ifp);
return (error);
}
int
mac_ifnet_ioctl_get(struct ucred *cred, struct ifreq *ifr,
struct ifnet *ifp)
{
char *elements, *buffer;
struct label *intlabel;
struct mac mac;
int error;
if (!(mac_labeled & MPC_OBJECT_IFNET))
return (EINVAL);
error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
if (error)
return (error);
error = mac_check_structmac_consistent(&mac);
if (error)
return (error);
elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
if (error) {
free(elements, M_MACTEMP);
return (error);
}
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
intlabel = mac_ifnet_label_alloc();
MAC_IFNET_LOCK(ifp);
mac_ifnet_copy_label(ifp->if_label, intlabel);
MAC_IFNET_UNLOCK(ifp);
error = mac_ifnet_externalize_label(intlabel, elements, buffer,
mac.m_buflen);
mac_ifnet_label_free(intlabel);
if (error == 0)
error = copyout(buffer, mac.m_string, strlen(buffer)+1);
free(buffer, M_MACTEMP);
free(elements, M_MACTEMP);
return (error);
}
int
mac_ifnet_check_transmit(struct ifnet *ifp, struct mbuf *m)
{
struct label *label;
int error;
M_ASSERTPKTHDR(m);
if (mac_policy_count == 0)
return (0);
label = mac_mbuf_to_label(m);
MAC_IFNET_LOCK(ifp);
MAC_POLICY_CHECK_NOSLEEP(ifnet_check_transmit, ifp, ifp->if_label, m,
label);
MAC_CHECK_PROBE2(ifnet_check_transmit, error, ifp, m);
MAC_IFNET_UNLOCK(ifp);
return (error);
}
int
mac_ifnet_ioctl_set(struct ucred *cred, struct ifreq *ifr, struct ifnet *ifp)
{
struct label *intlabel;
struct mac mac;
char *buffer;
int error;
if (!(mac_labeled & MPC_OBJECT_IFNET))
return (EINVAL);
error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
if (error)
return (error);
error = mac_check_structmac_consistent(&mac);
if (error)
return (error);
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
if (error) {
free(buffer, M_MACTEMP);
return (error);
}
intlabel = mac_ifnet_label_alloc();
error = mac_ifnet_internalize_label(intlabel, buffer);
free(buffer, M_MACTEMP);
if (error) {
mac_ifnet_label_free(intlabel);
return (error);
}
/*
* XXX: Note that this is a redundant privilege check, since policies
* impose this check themselves if required by the policy
* Eventually, this should go away.
*/
error = priv_check_cred(cred, PRIV_NET_SETIFMAC, 0);
if (error) {
mac_ifnet_label_free(intlabel);
return (error);
}
MAC_IFNET_LOCK(ifp);
MAC_POLICY_CHECK_NOSLEEP(ifnet_check_relabel, cred, ifp,
ifp->if_label, intlabel);
if (error) {
MAC_IFNET_UNLOCK(ifp);
mac_ifnet_label_free(intlabel);
return (error);
}
MAC_POLICY_PERFORM_NOSLEEP(ifnet_relabel, cred, ifp, ifp->if_label,
intlabel);
MAC_IFNET_UNLOCK(ifp);
mac_ifnet_label_free(intlabel);
return (0);
}