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/inttypes.h> 33 #include <sys/types.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 struct zfeature_info; 40 41 typedef struct zfeature_info { 42 const char *fi_uname; /* User-facing feature name */ 43 const char *fi_guid; /* On-disk feature identifier */ 44 const char *fi_desc; /* Feature description */ 45 boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */ 46 boolean_t fi_mos; /* Is the feature necessary to read the MOS? */ 47 struct zfeature_info **fi_depends; /* array; null terminated */ 48 } zfeature_info_t; 49 50 typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg); 51 52 #define ZFS_FEATURE_DEBUG 53 54 enum spa_feature { 55 SPA_FEATURE_ASYNC_DESTROY, 56 SPA_FEATURE_EMPTY_BPOBJ, 57 SPA_FEATURE_LZ4_COMPRESS, 58 SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 59 SPA_FEATURE_SPACEMAP_HISTOGRAM, 60 SPA_FEATURES 61 } spa_feature_t; 62 63 extern zfeature_info_t spa_feature_table[SPA_FEATURES]; 64 65 extern boolean_t zfeature_is_valid_guid(const char *); 66 67 extern boolean_t zfeature_is_supported(const char *); 68 extern int zfeature_lookup_guid(const char *, zfeature_info_t **res); 69 extern int zfeature_lookup_name(const char *, zfeature_info_t **res); 70 71 extern void zpool_feature_init(void); 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif /* _ZFEATURE_COMMON_H */ 78