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 */ 30 31 #include <sys/zio.h> 32 #include <sys/spa.h> 33 #include <sys/sunddi.h> 34 #include <sys/x86_archext.h> 35 36 extern int zfs_deadman_enabled; 37 38 char * 39 spa_get_bootprop(char *propname) 40 { 41 char *value; 42 43 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), 44 DDI_PROP_DONTPASS, propname, &value) != DDI_SUCCESS) 45 return (NULL); 46 return (value); 47 } 48 49 void 50 spa_free_bootprop(char *value) 51 { 52 ddi_prop_free(value); 53 } 54 55 void 56 spa_arch_init(void) 57 { 58 /* 59 * Configure the default settings for the zfs deadman unless 60 * overriden by /etc/system. 61 */ 62 if (zfs_deadman_enabled == -1) { 63 /* 64 * Disable the zfs deadman logic on VMware deployments. 65 */ 66 if (get_hwenv() == HW_VMWARE) 67 zfs_deadman_enabled = 0; 68 else 69 zfs_deadman_enabled = 1; 70 } 71 } 72