1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Copyright (c) 2012 by Delphix. All rights reserved. 29 * Copyright 2020 Joshua M. Clulow <josh@sysmgr.org> 30 */ 31 32 #include <sys/zio.h> 33 #include <sys/spa.h> 34 #include <sys/bootconf.h> 35 36 extern int zfs_deadman_enabled; 37 38 char * 39 spa_get_bootprop(const char *propname) 40 { 41 int proplen; 42 char *value; 43 44 proplen = BOP_GETPROPLEN(bootops, propname); 45 if (proplen <= 0) 46 return (NULL); 47 48 value = kmem_zalloc(proplen, KM_SLEEP); 49 if (BOP_GETPROP(bootops, propname, value) == -1) { 50 kmem_free(value, proplen); 51 return (NULL); 52 } 53 54 return (value); 55 } 56 57 void 58 spa_free_bootprop(char *propval) 59 { 60 if (propval == NULL) { 61 return; 62 } 63 64 kmem_free(propval, strlen(propval) + 1); 65 } 66 67 void 68 spa_arch_init(void) 69 { 70 /* 71 * The deadman is disabled by default on sparc. 72 */ 73 if (zfs_deadman_enabled == -1) 74 zfs_deadman_enabled = 0; 75 } 76