1 /* $NetBSD: kern_reboot.c,v 1.1 2018/09/14 01:55:19 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)kern_xxx.c 8.3 (Berkeley) 2/14/95 32 * from: NetBSD: kern_xxx.c,v 1.74 2017/10/28 00:37:11 pgoyette Exp 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: kern_reboot.c,v 1.1 2018/09/14 01:55:19 mrg Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/proc.h> 41 #include <sys/reboot.h> 42 #include <sys/syscall.h> 43 #include <sys/syscallargs.h> 44 #include <sys/kauth.h> 45 46 /* ARGSUSED */ 47 int 48 sys_reboot(struct lwp *l, const struct sys_reboot_args *uap, register_t *retval) 49 { 50 /* { 51 syscallarg(int) opt; 52 syscallarg(char *) bootstr; 53 } */ 54 int error; 55 char *bootstr, bs[128]; 56 57 if ((error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_REBOOT, 58 0, NULL, NULL, NULL)) != 0) 59 return (error); 60 61 /* 62 * Only use the boot string if RB_STRING is set. 63 */ 64 if ((SCARG(uap, opt) & RB_STRING) && 65 (error = copyinstr(SCARG(uap, bootstr), bs, sizeof(bs), 0)) == 0) 66 bootstr = bs; 67 else 68 bootstr = NULL; 69 /* 70 * Not all ports use the bootstr currently. 71 */ 72 KERNEL_LOCK(1, NULL); 73 cpu_reboot(SCARG(uap, opt), bootstr); 74 KERNEL_UNLOCK_ONE(NULL); 75 return (0); 76 } 77