003 File Manager
Current Path:
/usr/src/sys/security/mac_ntpd
usr
/
src
/
sys
/
security
/
mac_ntpd
/
📁
..
📄
mac_ntpd.c
(2.45 KB)
Editing: mac_ntpd.c
/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2018 Ian Lepore <ian@FreeBSD.org> * * 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. * * $FreeBSD$ */ #include <sys/param.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/priv.h> #include <sys/sysctl.h> #include <sys/ucred.h> #include <security/mac/mac_policy.h> SYSCTL_DECL(_security_mac); static SYSCTL_NODE(_security_mac, OID_AUTO, ntpd, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "mac_ntpd policy controls"); static int ntpd_enabled = 1; SYSCTL_INT(_security_mac_ntpd, OID_AUTO, enabled, CTLFLAG_RWTUN, &ntpd_enabled, 0, "Enable mac_ntpd policy"); static int ntpd_uid = 123; SYSCTL_INT(_security_mac_ntpd, OID_AUTO, uid, CTLFLAG_RWTUN, &ntpd_uid, 0, "User id for ntpd user"); static int ntpd_priv_grant(struct ucred *cred, int priv) { if (ntpd_enabled && cred->cr_uid == ntpd_uid) { switch (priv) { case PRIV_ADJTIME: case PRIV_CLOCK_SETTIME: case PRIV_NTP_ADJTIME: case PRIV_NETINET_RESERVEDPORT: case PRIV_NETINET_REUSEPORT: return (0); default: break; } } return (EPERM); } static struct mac_policy_ops ntpd_ops = { .mpo_priv_grant = ntpd_priv_grant, }; MAC_POLICY_SET(&ntpd_ops, mac_ntpd, "MAC/ntpd", MPC_LOADTIME_FLAG_UNLOADOK, NULL);
Upload File
Create Folder