diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c b/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c deleted file mode 100644 index ba79eeaaefea..000000000000 --- a/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ - -/* - * Copyright (c) 2011, 2018 by Delphix. All rights reserved. - * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. - * Copyright (c) 2013, Joyent, Inc. All rights reserved. - * Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved. - * Copyright (c) 2014 Integros [integros.com] - * Copyright (c) 2017, Intel Corporation. - */ - -#ifdef _KERNEL -#include <sys/systm.h> -#else -#include <errno.h> -#include <string.h> -#endif -#include <sys/debug.h> -#include <sys/fs/zfs.h> -#include <sys/types.h> -#include "zfeature_common.h" - -/* - * Set to disable all feature checks while opening pools, allowing pools with - * unsupported features to be opened. Set for testing only. - */ -boolean_t zfeature_checks_disable = B_FALSE; - -zfeature_info_t spa_feature_table[SPA_FEATURES]; - -/* - * Valid characters for feature guids. This list is mainly for aesthetic - * purposes and could be expanded in the future. There are different allowed - * characters in the guids reverse dns portion (before the colon) and its - * short name (after the colon). - */ -static int -valid_char(char c, boolean_t after_colon) -{ - return ((c >= 'a' && c <= 'z') || - (c >= '0' && c <= '9') || - (after_colon && c == '_') || - (!after_colon && (c == '.' || c == '-'))); -} - -/* - * Every feature guid must contain exactly one colon which separates a reverse - * dns organization name from the feature's "short" name (e.g. - * "com.company:feature_name"). - */ -boolean_t -zfeature_is_valid_guid(const char *name) -{ - int i; - boolean_t has_colon = B_FALSE; - - i = 0; - while (name[i] != '\0') { - char c = name[i++]; - if (c == ':') { - if (has_colon) - return (B_FALSE); - has_colon = B_TRUE; - continue; - } - if (!valid_char(c, has_colon)) - return (B_FALSE); - } - - return (has_colon); -} - -boolean_t -zfeature_is_supported(const char *guid) -{ - if (zfeature_checks_disable) - return (B_TRUE); - - for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { - zfeature_info_t *feature = &spa_feature_table[i]; - if (strcmp(guid, feature->fi_guid) == 0) - return (B_TRUE); - } - return (B_FALSE); -} - -int -zfeature_lookup_name(const char *name, spa_feature_t *res) -{ - for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { - zfeature_info_t *feature = &spa_feature_table[i]; - if (strcmp(name, feature->fi_uname) == 0) { - if (res != NULL) - *res = i; - return (0); - } - } - - return (ENOENT); -} - -boolean_t -zfeature_depends_on(spa_feature_t fid, spa_feature_t check) -{ - zfeature_info_t *feature = &spa_feature_table[fid]; - - for (int i = 0; feature->fi_depends[i] != SPA_FEATURE_NONE; i++) { - if (feature->fi_depends[i] == check) - return (B_TRUE); - } - return (B_FALSE); -} - -static void -zfeature_register(spa_feature_t fid, const char *guid, const char *name, - const char *desc, zfeature_flags_t flags, const spa_feature_t *deps) -{ - zfeature_info_t *feature = &spa_feature_table[fid]; - static spa_feature_t nodeps[] = { SPA_FEATURE_NONE }; - - ASSERT(name != NULL); - ASSERT(desc != NULL); - ASSERT((flags & ZFEATURE_FLAG_READONLY_COMPAT) == 0 || - (flags & ZFEATURE_FLAG_MOS) == 0); - ASSERT3U(fid, <, SPA_FEATURES); - ASSERT(zfeature_is_valid_guid(guid)); - - if (deps == NULL) - deps = nodeps; - - feature->fi_feature = fid; - feature->fi_guid = guid; - feature->fi_uname = name; - feature->fi_desc = desc; - feature->fi_flags = flags; - feature->fi_depends = deps; -} - -void -zpool_feature_init(void) -{ - zfeature_register(SPA_FEATURE_ASYNC_DESTROY, - "com.delphix:async_destroy", "async_destroy", - "Destroy filesystems asynchronously.", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - - zfeature_register(SPA_FEATURE_EMPTY_BPOBJ, - "com.delphix:empty_bpobj", "empty_bpobj", - "Snapshots use less space.", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - - zfeature_register(SPA_FEATURE_LZ4_COMPRESS, - "org.illumos:lz4_compress", "lz4_compress", - "LZ4 compression algorithm support.", - ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, NULL); - - zfeature_register(SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, - "com.joyent:multi_vdev_crash_dump", "multi_vdev_crash_dump", - "Crash dumps to multiple vdev pools.", - 0, NULL); - - zfeature_register(SPA_FEATURE_SPACEMAP_HISTOGRAM, - "com.delphix:spacemap_histogram", "spacemap_histogram", - "Spacemaps maintain space histograms.", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - - zfeature_register(SPA_FEATURE_ENABLED_TXG, - "com.delphix:enabled_txg", "enabled_txg", - "Record txg at which a feature is enabled", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - - static spa_feature_t hole_birth_deps[] = { SPA_FEATURE_ENABLED_TXG, - SPA_FEATURE_NONE }; - zfeature_register(SPA_FEATURE_HOLE_BIRTH, - "com.delphix:hole_birth", "hole_birth", - "Retain hole birth txg for more precise zfs send", - ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, - hole_birth_deps); - - zfeature_register(SPA_FEATURE_EXTENSIBLE_DATASET, - "com.delphix:extensible_dataset", "extensible_dataset", - "Enhanced dataset functionality, used by other features.", - 0, NULL); - - static const spa_feature_t bookmarks_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_BOOKMARKS, - "com.delphix:bookmarks", "bookmarks", - "\"zfs bookmark\" command", - ZFEATURE_FLAG_READONLY_COMPAT, bookmarks_deps); - - static const spa_feature_t filesystem_limits_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_FS_SS_LIMIT, - "com.joyent:filesystem_limits", "filesystem_limits", - "Filesystem and snapshot limits.", - ZFEATURE_FLAG_READONLY_COMPAT, filesystem_limits_deps); - - zfeature_register(SPA_FEATURE_EMBEDDED_DATA, - "com.delphix:embedded_data", "embedded_data", - "Blocks which compress very well use even less space.", - ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, - NULL); - - zfeature_register(SPA_FEATURE_POOL_CHECKPOINT, - "com.delphix:zpool_checkpoint", "zpool_checkpoint", - "Pool state can be checkpointed, allowing rewind later.", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - - zfeature_register(SPA_FEATURE_SPACEMAP_V2, - "com.delphix:spacemap_v2", "spacemap_v2", - "Space maps representing large segments are more efficient.", - ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, - NULL); - - static const spa_feature_t large_blocks_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_LARGE_BLOCKS, - "org.open-zfs:large_blocks", "large_blocks", - "Support for blocks larger than 128KB.", - ZFEATURE_FLAG_PER_DATASET, large_blocks_deps); - - { - static const spa_feature_t large_dnode_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_LARGE_DNODE, - "org.zfsonlinux:large_dnode", "large_dnode", - "Variable on-disk size of dnodes.", - ZFEATURE_FLAG_PER_DATASET, large_dnode_deps); - } - - static const spa_feature_t sha512_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_SHA512, - "org.illumos:sha512", "sha512", - "SHA-512/256 hash algorithm.", - ZFEATURE_FLAG_PER_DATASET, sha512_deps); - - static const spa_feature_t skein_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_SKEIN, - "org.illumos:skein", "skein", - "Skein hash algorithm.", - ZFEATURE_FLAG_PER_DATASET, skein_deps); - -#ifdef illumos - static const spa_feature_t edonr_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_EDONR, - "org.illumos:edonr", "edonr", - "Edon-R hash algorithm.", - ZFEATURE_FLAG_PER_DATASET, edonr_deps); -#endif - - zfeature_register(SPA_FEATURE_DEVICE_REMOVAL, - "com.delphix:device_removal", "device_removal", - "Top-level vdevs can be removed, reducing logical pool size.", - ZFEATURE_FLAG_MOS, NULL); - - static const spa_feature_t obsolete_counts_deps[] = { - SPA_FEATURE_EXTENSIBLE_DATASET, - SPA_FEATURE_DEVICE_REMOVAL, - SPA_FEATURE_NONE - }; - zfeature_register(SPA_FEATURE_OBSOLETE_COUNTS, - "com.delphix:obsolete_counts", "obsolete_counts", - "Reduce memory used by removed devices when their blocks are " - "freed or remapped.", - ZFEATURE_FLAG_READONLY_COMPAT, obsolete_counts_deps); - - { - zfeature_register(SPA_FEATURE_ALLOCATION_CLASSES, - "org.zfsonlinux:allocation_classes", "allocation_classes", - "Support for separate allocation classes.", - ZFEATURE_FLAG_READONLY_COMPAT, NULL); - } -} |