/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2022 Semihalf, Stormshield * Copyright (c) 2018 Ian Lepore * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include SYSCTL_DECL(_security_mac); static SYSCTL_NODE(_security_mac, OID_AUTO, pimd, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "mac_pimd policy controls"); static int pimd_enabled = 0; SYSCTL_INT(_security_mac_pimd, OID_AUTO, enabled, CTLFLAG_RWTUN, &pimd_enabled, 0, "Enable mac_pimd policy"); static int pimd_uid = 0; SYSCTL_INT(_security_mac_pimd, OID_AUTO, uid, CTLFLAG_RWTUN, &pimd_uid, 0, "User id for pimd user"); static int pimd_priv_grant(struct ucred *cred, int priv) { if (pimd_enabled && cred->cr_uid == pimd_uid) { switch (priv) { case PRIV_NETINET_MROUTE: return (0); default: break; } } return (EPERM); } static struct mac_policy_ops pimd_ops = { .mpo_priv_grant = pimd_priv_grant, }; MAC_POLICY_SET(&pimd_ops, mac_pimd, "MAC/pimd", MPC_LOADTIME_FLAG_UNLOADOK, NULL);