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/sunddi.h> 35 #include <sys/x86_archext.h> 36 37 extern int zfs_deadman_enabled; 38 39 char * 40 spa_get_bootprop(const char *propname) 41 { 42 char *value; 43 44 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), 45 DDI_PROP_DONTPASS, (char *)propname, &value) != DDI_SUCCESS) { 46 return (NULL); 47 } 48 49 return (value); 50 } 51 52 void 53 spa_free_bootprop(char *value) 54 { 55 if (value == NULL) { 56 return; 57 } 58 59 ddi_prop_free(value); 60 } 61 62 void 63 spa_arch_init(void) 64 { 65 /* 66 * Configure the default settings for the zfs deadman unless 67 * overriden by /etc/system. 68 */ 69 if (zfs_deadman_enabled == -1) { 70 /* 71 * Disable the zfs deadman logic on VMware deployments. 72 */ 73 if (get_hwenv() == HW_VMWARE) 74 zfs_deadman_enabled = 0; 75 else 76 zfs_deadman_enabled = 1; 77 } 78 } 79