zfeature_common.h revision 262093
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 (c) 2013 by Delphix. All rights reserved. 24 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26 */ 27 28#ifndef _ZFEATURE_COMMON_H 29#define _ZFEATURE_COMMON_H 30 31#include <sys/fs/zfs.h> 32#include <sys/types.h> 33 34#ifdef __cplusplus 35extern "C" { 36#endif 37 38struct zfeature_info; 39 40typedef struct zfeature_info { 41 const char *fi_uname; /* User-facing feature name */ 42 const char *fi_guid; /* On-disk feature identifier */ 43 const char *fi_desc; /* Feature description */ 44 boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */ 45 boolean_t fi_mos; /* Is the feature necessary to read the MOS? */ 46 struct zfeature_info **fi_depends; /* array; null terminated */ 47} zfeature_info_t; 48 49typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg); 50 51#define ZFS_FEATURE_DEBUG 52 53static enum spa_feature { 54 SPA_FEATURE_ASYNC_DESTROY, 55 SPA_FEATURE_EMPTY_BPOBJ, 56 SPA_FEATURE_LZ4_COMPRESS, 57 SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 58 SPA_FEATURE_SPACEMAP_HISTOGRAM, 59 SPA_FEATURES 60} spa_feature_t; 61 62extern zfeature_info_t spa_feature_table[SPA_FEATURES]; 63 64extern boolean_t zfeature_is_valid_guid(const char *); 65 66extern boolean_t zfeature_is_supported(const char *); 67extern int zfeature_lookup_guid(const char *, zfeature_info_t **res); 68extern int zfeature_lookup_name(const char *, zfeature_info_t **res); 69 70extern void zpool_feature_init(void); 71 72#ifdef __cplusplus 73} 74#endif 75 76#endif /* _ZFEATURE_COMMON_H */ 77