diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/common/zfs')
3 files changed, 247 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c b/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c new file mode 100644 index 0000000..6dadd99 --- /dev/null +++ b/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c @@ -0,0 +1,155 @@ +/* + * 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) 2012 by Delphix. All rights reserved. + */ + +#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') || + c == (after_colon ? '_' : '.')); +} + +/* + * 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); + + return (0 == zfeature_lookup_guid(guid, NULL)); +} + +int +zfeature_lookup_guid(const char *guid, zfeature_info_t **res) +{ + for (int i = 0; i < SPA_FEATURES; i++) { + zfeature_info_t *feature = &spa_feature_table[i]; + if (strcmp(guid, feature->fi_guid) == 0) { + if (res != NULL) + *res = feature; + return (0); + } + } + + return (ENOENT); +} + +int +zfeature_lookup_name(const char *name, zfeature_info_t **res) +{ + for (int 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 = feature; + return (0); + } + } + + return (ENOENT); +} + +static void +zfeature_register(int fid, const char *guid, const char *name, const char *desc, + boolean_t readonly, boolean_t mos, zfeature_info_t **deps) +{ + zfeature_info_t *feature = &spa_feature_table[fid]; + static zfeature_info_t *nodeps[] = { NULL }; + + ASSERT(name != NULL); + ASSERT(desc != NULL); + ASSERT(!readonly || !mos); + ASSERT3U(fid, <, SPA_FEATURES); + ASSERT(zfeature_is_valid_guid(guid)); + + if (deps == NULL) + deps = nodeps; + + feature->fi_guid = guid; + feature->fi_uname = name; + feature->fi_desc = desc; + feature->fi_can_readonly = readonly; + feature->fi_mos = mos; + feature->fi_depends = deps; +} + +void +zpool_feature_init(void) +{ + zfeature_register(SPA_FEATURE_ASYNC_DESTROY, + "com.delphix:async_destroy", "async_destroy", + "Destroy filesystems asynchronously.", B_TRUE, B_FALSE, NULL); +} diff --git a/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h b/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h new file mode 100644 index 0000000..b57eb43 --- /dev/null +++ b/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h @@ -0,0 +1,70 @@ +/* + * 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) 2012 by Delphix. All rights reserved. + */ + +#ifndef _ZFEATURE_COMMON_H +#define _ZFEATURE_COMMON_H + +#include <sys/fs/zfs.h> +#include <sys/types.h> + +#ifdef __cplusplus +extern "C" { +#endif + +struct zfeature_info; + +typedef struct zfeature_info { + const char *fi_uname; /* User-facing feature name */ + const char *fi_guid; /* On-disk feature identifier */ + const char *fi_desc; /* Feature description */ + boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */ + boolean_t fi_mos; /* Is the feature necessary to read the MOS? */ + struct zfeature_info **fi_depends; /* array; null terminated */ +} zfeature_info_t; + +typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg); + +#define ZFS_FEATURE_DEBUG + +static enum spa_feature { + SPA_FEATURE_ASYNC_DESTROY, + SPA_FEATURES +} spa_feature_t; + +extern zfeature_info_t spa_feature_table[SPA_FEATURES]; + +extern boolean_t zfeature_is_valid_guid(const char *); + +extern boolean_t zfeature_is_supported(const char *); +extern int zfeature_lookup_guid(const char *, zfeature_info_t **res); +extern int zfeature_lookup_name(const char *, zfeature_info_t **res); + +extern void zpool_feature_init(void); + +#ifdef __cplusplus +} +#endif + +#endif /* _ZFEATURE_COMMON_H */ diff --git a/sys/cddl/contrib/opensolaris/common/zfs/zpool_prop.c b/sys/cddl/contrib/opensolaris/common/zfs/zpool_prop.c index 512e067..72db879 100644 --- a/sys/cddl/contrib/opensolaris/common/zfs/zpool_prop.c +++ b/sys/cddl/contrib/opensolaris/common/zfs/zpool_prop.c @@ -79,6 +79,8 @@ zpool_prop_init(void) ZFS_TYPE_POOL, "<size>", "SIZE"); zprop_register_number(ZPOOL_PROP_FREE, "free", 0, PROP_READONLY, ZFS_TYPE_POOL, "<size>", "FREE"); + zprop_register_number(ZPOOL_PROP_FREEING, "freeing", 0, PROP_READONLY, + ZFS_TYPE_POOL, "<size>", "FREEING"); zprop_register_number(ZPOOL_PROP_ALLOCATED, "allocated", 0, PROP_READONLY, ZFS_TYPE_POOL, "<size>", "ALLOC"); zprop_register_number(ZPOOL_PROP_EXPANDSZ, "expandsize", 0, @@ -166,6 +168,26 @@ zpool_prop_default_numeric(zpool_prop_t prop) return (zpool_prop_table[prop].pd_numdefault); } +/* + * Returns true if this is a valid feature@ property. + */ +boolean_t +zpool_prop_feature(const char *name) +{ + static const char *prefix = "feature@"; + return (strncmp(name, prefix, strlen(prefix)) == 0); +} + +/* + * Returns true if this is a valid unsupported@ property. + */ +boolean_t +zpool_prop_unsupported(const char *name) +{ + static const char *prefix = "unsupported@"; + return (strncmp(name, prefix, strlen(prefix)) == 0); +} + int zpool_prop_string_to_index(zpool_prop_t prop, const char *string, uint64_t *index) |