xref: /freebsd/sys/contrib/openzfs/module/zcommon/zfs_prop.c (revision e92ffd9b626833ebdbf2742c8ffddc6cd94b963e)

/*
 * 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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
 * Copyright 2016, Joyent, Inc.
 * Copyright (c) 2019, Klara Inc.
 * Copyright (c) 2019, Allan Jude
 */

/* Portions Copyright 2010 Robert Milkowski */

#include <sys/zio.h>
#include <sys/spa.h>
#include <sys/u8_textprep.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_znode.h>
#include <sys/dsl_crypt.h>

#include "zfs_prop.h"
#include "zfs_deleg.h"
#include "zfs_fletcher.h"

#if !defined(_KERNEL)
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#endif

static zprop_desc_t zfs_prop_table[ZFS_NUM_PROPS];

/* Note this is indexed by zfs_userquota_prop_t, keep the order the same */
const char *const zfs_userquota_prop_prefixes[] = {
	"userused@",
	"userquota@",
	"groupused@",
	"groupquota@",
	"userobjused@",
	"userobjquota@",
	"groupobjused@",
	"groupobjquota@",
	"projectused@",
	"projectquota@",
	"projectobjused@",
	"projectobjquota@"
};

zprop_desc_t *
zfs_prop_get_table(void)
{
	return (zfs_prop_table);
}

void
zfs_prop_init(void)
{
	static const zprop_index_t checksum_table[] = {
		{ "on",		ZIO_CHECKSUM_ON },
		{ "off",	ZIO_CHECKSUM_OFF },
		{ "fletcher2",	ZIO_CHECKSUM_FLETCHER_2 },
		{ "fletcher4",	ZIO_CHECKSUM_FLETCHER_4 },
		{ "sha256",	ZIO_CHECKSUM_SHA256 },
		{ "noparity",   ZIO_CHECKSUM_NOPARITY },
		{ "sha512",	ZIO_CHECKSUM_SHA512 },
		{ "skein",	ZIO_CHECKSUM_SKEIN },
		{ "edonr",	ZIO_CHECKSUM_EDONR },
		{ NULL }
	};

	static const zprop_index_t dedup_table[] = {
		{ "on",		ZIO_CHECKSUM_ON },
		{ "off",	ZIO_CHECKSUM_OFF },
		{ "verify",	ZIO_CHECKSUM_ON | ZIO_CHECKSUM_VERIFY },
		{ "sha256",	ZIO_CHECKSUM_SHA256 },
		{ "sha256,verify",
				ZIO_CHECKSUM_SHA256 | ZIO_CHECKSUM_VERIFY },
		{ "sha512",	ZIO_CHECKSUM_SHA512 },
		{ "sha512,verify",
				ZIO_CHECKSUM_SHA512 | ZIO_CHECKSUM_VERIFY },
		{ "skein",	ZIO_CHECKSUM_SKEIN },
		{ "skein,verify",
				ZIO_CHECKSUM_SKEIN | ZIO_CHECKSUM_VERIFY },
		{ "edonr,verify",
				ZIO_CHECKSUM_EDONR | ZIO_CHECKSUM_VERIFY },
		{ NULL }
	};

	static const zprop_index_t compress_table[] = {
		{ "on",		ZIO_COMPRESS_ON },
		{ "off",	ZIO_COMPRESS_OFF },
		{ "lzjb",	ZIO_COMPRESS_LZJB },
		{ "gzip",	ZIO_COMPRESS_GZIP_6 },	/* gzip default */
		{ "gzip-1",	ZIO_COMPRESS_GZIP_1 },
		{ "gzip-2",	ZIO_COMPRESS_GZIP_2 },
		{ "gzip-3",	ZIO_COMPRESS_GZIP_3 },
		{ "gzip-4",	ZIO_COMPRESS_GZIP_4 },
		{ "gzip-5",	ZIO_COMPRESS_GZIP_5 },
		{ "gzip-6",	ZIO_COMPRESS_GZIP_6 },
		{ "gzip-7",	ZIO_COMPRESS_GZIP_7 },
		{ "gzip-8",	ZIO_COMPRESS_GZIP_8 },
		{ "gzip-9",	ZIO_COMPRESS_GZIP_9 },
		{ "zle",	ZIO_COMPRESS_ZLE },
		{ "lz4",	ZIO_COMPRESS_LZ4 },
		{ "zstd",	ZIO_COMPRESS_ZSTD },
		{ "zstd-fast",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_DEFAULT) },

		/*
		 * ZSTD 1-19 are synthetic. We store the compression level in a
		 * separate hidden property to avoid wasting a large amount of
		 * space in the ZIO_COMPRESS enum.
		 *
		 * The compression level is also stored within the header of the
		 * compressed block since we may need it for later recompression
		 * to avoid checksum errors (L2ARC).
		 *
		 * Note that the level here is defined as bit shifted mask on
		 * top of the method.
		 */
		{ "zstd-1",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_1) },
		{ "zstd-2",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_2) },
		{ "zstd-3",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_3) },
		{ "zstd-4",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_4) },
		{ "zstd-5",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_5) },
		{ "zstd-6",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_6) },
		{ "zstd-7",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_7) },
		{ "zstd-8",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_8) },
		{ "zstd-9",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_9) },
		{ "zstd-10",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_10) },
		{ "zstd-11",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_11) },
		{ "zstd-12",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_12) },
		{ "zstd-13",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_13) },
		{ "zstd-14",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_14) },
		{ "zstd-15",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_15) },
		{ "zstd-16",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_16) },
		{ "zstd-17",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_17) },
		{ "zstd-18",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_18) },
		{ "zstd-19",	ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_19) },

		/*
		 * The ZSTD-Fast levels are also synthetic.
		 */
		{ "zstd-fast-1",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_1) },
		{ "zstd-fast-2",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_2) },
		{ "zstd-fast-3",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_3) },
		{ "zstd-fast-4",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_4) },
		{ "zstd-fast-5",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_5) },
		{ "zstd-fast-6",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_6) },
		{ "zstd-fast-7",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_7) },
		{ "zstd-fast-8",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_8) },
		{ "zstd-fast-9",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_9) },
		{ "zstd-fast-10",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_10) },
		{ "zstd-fast-20",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_20) },
		{ "zstd-fast-30",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_30) },
		{ "zstd-fast-40",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_40) },
		{ "zstd-fast-50",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_50) },
		{ "zstd-fast-60",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_60) },
		{ "zstd-fast-70",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_70) },
		{ "zstd-fast-80",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_80) },
		{ "zstd-fast-90",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_90) },
		{ "zstd-fast-100",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_100) },
		{ "zstd-fast-500",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_500) },
		{ "zstd-fast-1000",
		    ZIO_COMPLEVEL_ZSTD(ZIO_ZSTD_LEVEL_FAST_1000) },
		{ NULL }
	};

	static const zprop_index_t crypto_table[] = {
		{ "on",			ZIO_CRYPT_ON },
		{ "off",		ZIO_CRYPT_OFF },
		{ "aes-128-ccm",	ZIO_CRYPT_AES_128_CCM },
		{ "aes-192-ccm",	ZIO_CRYPT_AES_192_CCM },
		{ "aes-256-ccm",	ZIO_CRYPT_AES_256_CCM },
		{ "aes-128-gcm",	ZIO_CRYPT_AES_128_GCM },
		{ "aes-192-gcm",	ZIO_CRYPT_AES_192_GCM },
		{ "aes-256-gcm",	ZIO_CRYPT_AES_256_GCM },
		{ NULL }
	};

	static const zprop_index_t keyformat_table[] = {
		{ "none",		ZFS_KEYFORMAT_NONE },
		{ "raw",		ZFS_KEYFORMAT_RAW },
		{ "hex",		ZFS_KEYFORMAT_HEX },
		{ "passphrase",		ZFS_KEYFORMAT_PASSPHRASE },
		{ NULL }
	};

	static const zprop_index_t snapdir_table[] = {
		{ "hidden",	ZFS_SNAPDIR_HIDDEN },
		{ "visible",	ZFS_SNAPDIR_VISIBLE },
		{ NULL }
	};

	static const zprop_index_t snapdev_table[] = {
		{ "hidden",	ZFS_SNAPDEV_HIDDEN },
		{ "visible",	ZFS_SNAPDEV_VISIBLE },
		{ NULL }
	};

	static const zprop_index_t acl_mode_table[] = {
		{ "discard",	ZFS_ACL_DISCARD },
		{ "groupmask",	ZFS_ACL_GROUPMASK },
		{ "passthrough", ZFS_ACL_PASSTHROUGH },
		{ "restricted",	ZFS_ACL_RESTRICTED },
		{ NULL }
	};

	static const zprop_index_t acltype_table[] = {
		{ "off",	ZFS_ACLTYPE_OFF },
		{ "posix",	ZFS_ACLTYPE_POSIX },
		{ "nfsv4",	ZFS_ACLTYPE_NFSV4 },
		{ "disabled",	ZFS_ACLTYPE_OFF }, /* bkwrd compatibility */
		{ "noacl",	ZFS_ACLTYPE_OFF }, /* bkwrd compatibility */
		{ "posixacl",	ZFS_ACLTYPE_POSIX }, /* bkwrd compatibility */
		{ NULL }
	};

	static const zprop_index_t acl_inherit_table[] = {
		{ "discard",	ZFS_ACL_DISCARD },
		{ "noallow",	ZFS_ACL_NOALLOW },
		{ "restricted",	ZFS_ACL_RESTRICTED },
		{ "passthrough", ZFS_ACL_PASSTHROUGH },
		{ "secure",	ZFS_ACL_RESTRICTED }, /* bkwrd compatibility */
		{ "passthrough-x", ZFS_ACL_PASSTHROUGH_X },
		{ NULL }
	};

	static const zprop_index_t case_table[] = {
		{ "sensitive",		ZFS_CASE_SENSITIVE },
		{ "insensitive",	ZFS_CASE_INSENSITIVE },
		{ "mixed",		ZFS_CASE_MIXED },
		{ NULL }
	};

	static const zprop_index_t copies_table[] = {
		{ "1",		1 },
		{ "2",		2 },
		{ "3",		3 },
		{ NULL }
	};

	/*
	 * Use the unique flags we have to send to u8_strcmp() and/or
	 * u8_textprep() to represent the various normalization property
	 * values.
	 */
	static const zprop_index_t normalize_table[] = {
		{ "none",	0 },
		{ "formD",	U8_TEXTPREP_NFD },
		{ "formKC",	U8_TEXTPREP_NFKC },
		{ "formC",	U8_TEXTPREP_NFC },
		{ "formKD",	U8_TEXTPREP_NFKD },
		{ NULL }
	};

	static const zprop_index_t version_table[] = {
		{ "1",		1 },
		{ "2",		2 },
		{ "3",		3 },
		{ "4",		4 },
		{ "5",		5 },
		{ "current",	ZPL_VERSION },
		{ NULL }
	};

	static const zprop_index_t boolean_table[] = {
		{ "off",	0 },
		{ "on",		1 },
		{ NULL }
	};

	static const zprop_index_t keystatus_table[] = {
		{ "none",		ZFS_KEYSTATUS_NONE},
		{ "unavailable",	ZFS_KEYSTATUS_UNAVAILABLE},
		{ "available",		ZFS_KEYSTATUS_AVAILABLE},
		{ NULL }
	};

	static const zprop_index_t logbias_table[] = {
		{ "latency",	ZFS_LOGBIAS_LATENCY },
		{ "throughput",	ZFS_LOGBIAS_THROUGHPUT },
		{ NULL }
	};

	static const zprop_index_t canmount_table[] = {
		{ "off",	ZFS_CANMOUNT_OFF },
		{ "on",		ZFS_CANMOUNT_ON },
		{ "noauto",	ZFS_CANMOUNT_NOAUTO },
		{ NULL }
	};

	static const zprop_index_t cache_table[] = {
		{ "none",	ZFS_CACHE_NONE },
		{ "metadata",	ZFS_CACHE_METADATA },
		{ "all",	ZFS_CACHE_ALL },
		{ NULL }
	};

	static const zprop_index_t sync_table[] = {
		{ "standard",	ZFS_SYNC_STANDARD },
		{ "always",	ZFS_SYNC_ALWAYS },
		{ "disabled",	ZFS_SYNC_DISABLED },
		{ NULL }
	};

	static const zprop_index_t xattr_table[] = {
		{ "off",	ZFS_XATTR_OFF },
		{ "on",		ZFS_XATTR_DIR },
		{ "sa",		ZFS_XATTR_SA },
		{ "dir",	ZFS_XATTR_DIR },
		{ NULL }
	};

	static const zprop_index_t dnsize_table[] = {
		{ "legacy",	ZFS_DNSIZE_LEGACY },
		{ "auto",	ZFS_DNSIZE_AUTO },
		{ "1k",		ZFS_DNSIZE_1K },
		{ "2k",		ZFS_DNSIZE_2K },
		{ "4k",		ZFS_DNSIZE_4K },
		{ "8k",		ZFS_DNSIZE_8K },
		{ "16k",	ZFS_DNSIZE_16K },
		{ NULL }
	};

	static const zprop_index_t redundant_metadata_table[] = {
		{ "all",	ZFS_REDUNDANT_METADATA_ALL },
		{ "most",	ZFS_REDUNDANT_METADATA_MOST },
		{ NULL }
	};

	static const zprop_index_t volmode_table[] = {
		{ "default",	ZFS_VOLMODE_DEFAULT },
		{ "full",	ZFS_VOLMODE_GEOM },
		{ "geom",	ZFS_VOLMODE_GEOM },
		{ "dev",	ZFS_VOLMODE_DEV },
		{ "none",	ZFS_VOLMODE_NONE },
		{ NULL }
	};

	struct zfs_mod_supported_features *sfeatures =
	    zfs_mod_list_supported(ZFS_SYSFS_DATASET_PROPERTIES);

	/* inherit index properties */
	zprop_register_index(ZFS_PROP_REDUNDANT_METADATA, "redundant_metadata",
	    ZFS_REDUNDANT_METADATA_ALL,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "all | most", "REDUND_MD",
	    redundant_metadata_table, sfeatures);
	zprop_register_index(ZFS_PROP_SYNC, "sync", ZFS_SYNC_STANDARD,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "standard | always | disabled", "SYNC",
	    sync_table, sfeatures);
	zprop_register_index(ZFS_PROP_CHECKSUM, "checksum",
	    ZIO_CHECKSUM_DEFAULT, PROP_INHERIT, ZFS_TYPE_FILESYSTEM |
	    ZFS_TYPE_VOLUME,
	    "on | off | fletcher2 | fletcher4 | sha256 | sha512 | skein"
	    " | edonr",
	    "CHECKSUM", checksum_table, sfeatures);
	zprop_register_index(ZFS_PROP_DEDUP, "dedup", ZIO_CHECKSUM_OFF,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "on | off | verify | sha256[,verify] | sha512[,verify] | "
	    "skein[,verify] | edonr,verify",
	    "DEDUP", dedup_table, sfeatures);
	zprop_register_index(ZFS_PROP_COMPRESSION, "compression",
	    ZIO_COMPRESS_DEFAULT, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "on | off | lzjb | gzip | gzip-[1-9] | zle | lz4 | "
	    "zstd | zstd-[1-19] | "
	    "zstd-fast | zstd-fast-[1-10,20,30,40,50,60,70,80,90,100,500,1000]",
	    "COMPRESS", compress_table, sfeatures);
	zprop_register_index(ZFS_PROP_SNAPDIR, "snapdir", ZFS_SNAPDIR_HIDDEN,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "hidden | visible", "SNAPDIR", snapdir_table, sfeatures);
	zprop_register_index(ZFS_PROP_SNAPDEV, "snapdev", ZFS_SNAPDEV_HIDDEN,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "hidden | visible", "SNAPDEV", snapdev_table, sfeatures);
	zprop_register_index(ZFS_PROP_ACLMODE, "aclmode", ZFS_ACL_DISCARD,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "discard | groupmask | passthrough | restricted", "ACLMODE",
	    acl_mode_table, sfeatures);
	zprop_register_index(ZFS_PROP_ACLTYPE, "acltype",
#ifdef __linux__
	    /* Linux doesn't natively support ZFS's NFSv4-style ACLs. */
	    ZFS_ACLTYPE_OFF,
#else
	    ZFS_ACLTYPE_NFSV4,
#endif
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
	    "off | nfsv4 | posix", "ACLTYPE", acltype_table, sfeatures);
	zprop_register_index(ZFS_PROP_ACLINHERIT, "aclinherit",
	    ZFS_ACL_RESTRICTED, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "discard | noallow | restricted | passthrough | passthrough-x",
	    "ACLINHERIT", acl_inherit_table, sfeatures);
	zprop_register_index(ZFS_PROP_COPIES, "copies", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "1 | 2 | 3", "COPIES", copies_table, sfeatures);
	zprop_register_index(ZFS_PROP_PRIMARYCACHE, "primarycache",
	    ZFS_CACHE_ALL, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
	    "all | none | metadata", "PRIMARYCACHE", cache_table, sfeatures);
	zprop_register_index(ZFS_PROP_SECONDARYCACHE, "secondarycache",
	    ZFS_CACHE_ALL, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
	    "all | none | metadata", "SECONDARYCACHE", cache_table, sfeatures);
	zprop_register_index(ZFS_PROP_LOGBIAS, "logbias", ZFS_LOGBIAS_LATENCY,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "latency | throughput", "LOGBIAS", logbias_table, sfeatures);
	zprop_register_index(ZFS_PROP_XATTR, "xattr", ZFS_XATTR_DIR,
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
	    "on | off | dir | sa", "XATTR", xattr_table, sfeatures);
	zprop_register_index(ZFS_PROP_DNODESIZE, "dnodesize",
	    ZFS_DNSIZE_LEGACY, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "legacy | auto | 1k | 2k | 4k | 8k | 16k", "DNSIZE", dnsize_table,
	    sfeatures);
	zprop_register_index(ZFS_PROP_VOLMODE, "volmode",
	    ZFS_VOLMODE_DEFAULT, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "default | full | geom | dev | none", "VOLMODE", volmode_table,
	    sfeatures);

	/* inherit index (boolean) properties */
	zprop_register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "ATIME", boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_RELATIME, "relatime", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "RELATIME", boolean_table,
	    sfeatures);
	zprop_register_index(ZFS_PROP_DEVICES, "devices", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "DEVICES",
	    boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_EXEC, "exec", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "EXEC",
	    boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_SETUID, "setuid", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "SETUID",
	    boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_READONLY, "readonly", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "on | off", "RDONLY",
	    boolean_table, sfeatures);
#ifdef __FreeBSD__
	zprop_register_index(ZFS_PROP_ZONED, "jailed", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "JAILED", boolean_table,
	    sfeatures);
#else
	zprop_register_index(ZFS_PROP_ZONED, "zoned", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "ZONED", boolean_table, sfeatures);
#endif
	zprop_register_index(ZFS_PROP_VSCAN, "vscan", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "VSCAN", boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_NBMAND, "nbmand", 0, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "NBMAND",
	    boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_OVERLAY, "overlay", 1, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "on | off", "OVERLAY", boolean_table,
	    sfeatures);

	/* default index properties */
	zprop_register_index(ZFS_PROP_VERSION, "version", 0, PROP_DEFAULT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
	    "1 | 2 | 3 | 4 | 5 | current", "VERSION", version_table, sfeatures);
	zprop_register_index(ZFS_PROP_CANMOUNT, "canmount", ZFS_CANMOUNT_ON,
	    PROP_DEFAULT, ZFS_TYPE_FILESYSTEM, "on | off | noauto",
	    "CANMOUNT", canmount_table, sfeatures);

	/* readonly index properties */
	zprop_register_index(ZFS_PROP_MOUNTED, "mounted", 0, PROP_READONLY,
	    ZFS_TYPE_FILESYSTEM, "yes | no", "MOUNTED", boolean_table,
	    sfeatures);
	zprop_register_index(ZFS_PROP_DEFER_DESTROY, "defer_destroy", 0,
	    PROP_READONLY, ZFS_TYPE_SNAPSHOT, "yes | no", "DEFER_DESTROY",
	    boolean_table, sfeatures);
	zprop_register_index(ZFS_PROP_KEYSTATUS, "keystatus",
	    ZFS_KEYSTATUS_NONE, PROP_READONLY, ZFS_TYPE_DATASET,
	    "none | unavailable | available",
	    "KEYSTATUS", keystatus_table, sfeatures);

	/* set once index properties */
	zprop_register_index(ZFS_PROP_NORMALIZE, "normalization", 0,
	    PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
	    "none | formC | formD | formKC | formKD", "NORMALIZATION",
	    normalize_table, sfeatures);
	zprop_register_index(ZFS_PROP_CASE, "casesensitivity",
	    ZFS_CASE_SENSITIVE, PROP_ONETIME, ZFS_TYPE_FILESYSTEM |
	    ZFS_TYPE_SNAPSHOT,
	    "sensitive | insensitive | mixed", "CASE", case_table, sfeatures);
	zprop_register_index(ZFS_PROP_KEYFORMAT, "keyformat",
	    ZFS_KEYFORMAT_NONE, PROP_ONETIME_DEFAULT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "none | raw | hex | passphrase", "KEYFORMAT", keyformat_table,
	    sfeatures);
	zprop_register_index(ZFS_PROP_ENCRYPTION, "encryption",
	    ZIO_CRYPT_DEFAULT, PROP_ONETIME, ZFS_TYPE_DATASET,
	    "on | off | aes-128-ccm | aes-192-ccm | aes-256-ccm | "
	    "aes-128-gcm | aes-192-gcm | aes-256-gcm", "ENCRYPTION",
	    crypto_table, sfeatures);

	/* set once index (boolean) properties */
	zprop_register_index(ZFS_PROP_UTF8ONLY, "utf8only", 0, PROP_ONETIME,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
	    "on | off", "UTF8ONLY", boolean_table, sfeatures);

	/* string properties */
	zprop_register_string(ZFS_PROP_ORIGIN, "origin", NULL, PROP_READONLY,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<snapshot>", "ORIGIN",
	    sfeatures);
	zprop_register_string(ZFS_PROP_CLONES, "clones", NULL, PROP_READONLY,
	    ZFS_TYPE_SNAPSHOT, "<dataset>[,...]", "CLONES", sfeatures);
	zprop_register_string(ZFS_PROP_MOUNTPOINT, "mountpoint", "/",
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "<path> | legacy | none",
	    "MOUNTPOINT", sfeatures);
	zprop_register_string(ZFS_PROP_SHARENFS, "sharenfs", "off",
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "on | off | NFS share options",
	    "SHARENFS", sfeatures);
	zprop_register_string(ZFS_PROP_TYPE, "type", NULL, PROP_READONLY,
	    ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
	    "filesystem | volume | snapshot | bookmark", "TYPE", sfeatures);
	zprop_register_string(ZFS_PROP_SHARESMB, "sharesmb", "off",
	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "on | off | SMB share options", "SHARESMB", sfeatures);
	zprop_register_string(ZFS_PROP_MLSLABEL, "mlslabel",
	    ZFS_MLSLABEL_DEFAULT, PROP_INHERIT, ZFS_TYPE_DATASET,
	    "<sensitivity label>", "MLSLABEL", sfeatures);
	zprop_register_string(ZFS_PROP_SELINUX_CONTEXT, "context",
	    "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux context>",
	    "CONTEXT", sfeatures);
	zprop_register_string(ZFS_PROP_SELINUX_FSCONTEXT, "fscontext",
	    "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux fscontext>",
	    "FSCONTEXT", sfeatures);
	zprop_register_string(ZFS_PROP_SELINUX_DEFCONTEXT, "defcontext",
	    "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux defcontext>",
	    "DEFCONTEXT", sfeatures);
	zprop_register_string(ZFS_PROP_SELINUX_ROOTCONTEXT, "rootcontext",
	    "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux rootcontext>",
	    "ROOTCONTEXT", sfeatures);
	zprop_register_string(ZFS_PROP_RECEIVE_RESUME_TOKEN,
	    "receive_resume_token",
	    NULL, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<string token>", "RESUMETOK", sfeatures);
	zprop_register_string(ZFS_PROP_ENCRYPTION_ROOT, "encryptionroot", NULL,
	    PROP_READONLY, ZFS_TYPE_DATASET, "<filesystem | volume>",
	    "ENCROOT", sfeatures);
	zprop_register_string(ZFS_PROP_KEYLOCATION, "keylocation",
	    "none", PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "prompt | <file URI> | <https URL> | <http URL>", "KEYLOCATION",
	    sfeatures);
	zprop_register_string(ZFS_PROP_REDACT_SNAPS,
	    "redact_snaps", NULL, PROP_READONLY,
	    ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<snapshot>[,...]",
	    "RSNAPS", sfeatures);

	/* readonly number properties */
	zprop_register_number(ZFS_PROP_USED, "used", 0, PROP_READONLY,
	    ZFS_TYPE_DATASET, "<size>", "USED", sfeatures);
	zprop_register_number(ZFS_PROP_AVAILABLE, "available", 0, PROP_READONLY,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "AVAIL",
	    sfeatures);
	zprop_register_number(ZFS_PROP_REFERENCED, "referenced", 0,
	    PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<size>",
	    "REFER", sfeatures);
	zprop_register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0,
	    PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
	    "<1.00x or higher if compressed>", "RATIO", sfeatures);
	zprop_register_number(ZFS_PROP_REFRATIO, "refcompressratio", 0,
	    PROP_READONLY, ZFS_TYPE_DATASET,
	    "<1.00x or higher if compressed>", "REFRATIO", sfeatures);
	zprop_register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize",
	    ZVOL_DEFAULT_BLOCKSIZE, PROP_ONETIME,
	    ZFS_TYPE_VOLUME, "512 to 128k, power of 2",	"VOLBLOCK", sfeatures);
	zprop_register_number(ZFS_PROP_USEDSNAP, "usedbysnapshots", 0,
	    PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
	    "USEDSNAP", sfeatures);
	zprop_register_number(ZFS_PROP_USEDDS, "usedbydataset", 0,
	    PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
	    "USEDDS", sfeatures);
	zprop_register_number(ZFS_PROP_USEDCHILD, "usedbychildren", 0,
	    PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
	    "USEDCHILD", sfeatures);
	zprop_register_number(ZFS_PROP_USEDREFRESERV, "usedbyrefreservation", 0,
	    PROP_READONLY,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDREFRESERV",
	    sfeatures);
	zprop_register_number(ZFS_PROP_USERREFS, "userrefs", 0, PROP_READONLY,
	    ZFS_TYPE_SNAPSHOT, "<count>", "USERREFS", sfeatures);
	zprop_register_number(ZFS_PROP_WRITTEN, "written", 0, PROP_READONLY,
	    ZFS_TYPE_DATASET, "<size>", "WRITTEN", sfeatures);
	zprop_register_number(ZFS_PROP_LOGICALUSED, "logicalused", 0,
	    PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
	    "LUSED", sfeatures);
	zprop_register_number(ZFS_PROP_LOGICALREFERENCED, "logicalreferenced",
	    0, PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<size>",
	    "LREFER", sfeatures);
	zprop_register_number(ZFS_PROP_FILESYSTEM_COUNT, "filesystem_count",
	    UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
	    "<count>", "FSCOUNT", sfeatures);
	zprop_register_number(ZFS_PROP_SNAPSHOT_COUNT, "snapshot_count",
	    UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<count>", "SSCOUNT", sfeatures);
	zprop_register_number(ZFS_PROP_GUID, "guid", 0, PROP_READONLY,
	    ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "GUID",
	    sfeatures);
	zprop_register_number(ZFS_PROP_CREATETXG, "createtxg", 0, PROP_READONLY,
	    ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "CREATETXG",
	    sfeatures);
	zprop_register_number(ZFS_PROP_PBKDF2_ITERS, "pbkdf2iters",
	    0, PROP_ONETIME_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<iters>", "PBKDF2ITERS", sfeatures);
	zprop_register_number(ZFS_PROP_OBJSETID, "objsetid", 0,
	    PROP_READONLY, ZFS_TYPE_DATASET, "<uint64>", "OBJSETID", sfeatures);

	/* default number properties */
	zprop_register_number(ZFS_PROP_QUOTA, "quota", 0, PROP_DEFAULT,
	    ZFS_TYPE_FILESYSTEM, "<size> | none", "QUOTA", sfeatures);
	zprop_register_number(ZFS_PROP_RESERVATION, "reservation", 0,
	    PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<size> | none", "RESERV", sfeatures);
	zprop_register_number(ZFS_PROP_VOLSIZE, "volsize", 0, PROP_DEFAULT,
	    ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME, "<size>", "VOLSIZE",
	    sfeatures);
	zprop_register_number(ZFS_PROP_REFQUOTA, "refquota", 0, PROP_DEFAULT,
	    ZFS_TYPE_FILESYSTEM, "<size> | none", "REFQUOTA", sfeatures);
	zprop_register_number(ZFS_PROP_REFRESERVATION, "refreservation", 0,
	    PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<size> | none", "REFRESERV", sfeatures);
	zprop_register_number(ZFS_PROP_FILESYSTEM_LIMIT, "filesystem_limit",
	    UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM,
	    "<count> | none", "FSLIMIT", sfeatures);
	zprop_register_number(ZFS_PROP_SNAPSHOT_LIMIT, "snapshot_limit",
	    UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
	    "<count> | none", "SSLIMIT", sfeatures);

	/* inherit number properties */
	zprop_register_number(ZFS_PROP_RECORDSIZE, "recordsize",
	    SPA_OLD_MAXBLOCKSIZE, PROP_INHERIT,
	    ZFS_TYPE_FILESYSTEM, "512 to 1M, power of 2", "RECSIZE", sfeatures);
	zprop_register_number(ZFS_PROP_SPECIAL_SMALL_BLOCKS,
	    "special_small_blocks", 0, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
	    "zero or 512 to 1M, power of 2", "SPECIAL_SMALL_BLOCKS", sfeatures);

	/* hidden properties */
	zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,
	    PROP_READONLY, ZFS_TYPE_SNAPSHOT, "NUMCLONES", sfeatures);
	zprop_register_hidden(ZFS_PROP_NAME, "name", PROP_TYPE_STRING,
	    PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "NAME",
	    sfeatures);
	zprop_register_hidden(ZFS_PROP_ISCSIOPTIONS, "iscsioptions",
	    PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME, "ISCSIOPTIONS",
	    sfeatures);
	zprop_register_hidden(ZFS_PROP_STMF_SHAREINFO, "stmf_sbd_lu",
	    PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME,
	    "STMF_SBD_LU", sfeatures);
	zprop_register_hidden(ZFS_PROP_USERACCOUNTING, "useraccounting",
	    PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET,
	    "USERACCOUNTING", sfeatures);
	zprop_register_hidden(ZFS_PROP_UNIQUE, "unique", PROP_TYPE_NUMBER,
	    PROP_READONLY, ZFS_TYPE_DATASET, "UNIQUE", sfeatures);
	zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent",
	    PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT",
	    sfeatures);
	zprop_register_hidden(ZFS_PROP_IVSET_GUID, "ivsetguid",
	    PROP_TYPE_NUMBER, PROP_READONLY,
	    ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "IVSETGUID", sfeatures);
	zprop_register_hidden(ZFS_PROP_PREV_SNAP, "prevsnap", PROP_TYPE_STRING,
	    PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PREVSNAP",
	    sfeatures);
	zprop_register_hidden(ZFS_PROP_PBKDF2_SALT, "pbkdf2salt",
	    PROP_TYPE_NUMBER, PROP_ONETIME_DEFAULT,
	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PBKDF2SALT", sfeatures);
	zprop_register_hidden(ZFS_PROP_KEY_GUID, "keyguid", PROP_TYPE_NUMBER,
	    PROP_READONLY, ZFS_TYPE_DATASET, "KEYGUID", sfeatures);
	zprop_register_hidden(ZFS_PROP_REDACTED, "redacted", PROP_TYPE_NUMBER,
	    PROP_READONLY, ZFS_TYPE_DATASET, "REDACTED", sfeatures);

	/*
	 * Properties that are obsolete and not used.  These are retained so
	 * that we don't have to change the values of the zfs_prop_t enum, or
	 * have NULL pointers in the zfs_prop_table[].
	 */
	zprop_register_hidden(ZFS_PROP_REMAPTXG, "remaptxg", PROP_TYPE_NUMBER,
	    PROP_READONLY, ZFS_TYPE_DATASET, "REMAPTXG", sfeatures);

	/* oddball properties */
	zprop_register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0,
	    NULL, PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
	    "<date>", "CREATION", B_FALSE, B_TRUE, NULL, sfeatures);

	zfs_mod_list_supported_free(sfeatures);
}

boolean_t
zfs_prop_delegatable(zfs_prop_t prop)
{
	zprop_desc_t *pd = &zfs_prop_table[prop];

	/* The mlslabel property is never delegatable. */
	if (prop == ZFS_PROP_MLSLABEL)
		return (B_FALSE);

	return (pd->pd_attr != PROP_READONLY);
}

/*
 * Given a zfs dataset property name, returns the corresponding property ID.
 */
zfs_prop_t
zfs_name_to_prop(const char *propname)
{
	return (zprop_name_to_prop(propname, ZFS_TYPE_DATASET));
}

/*
 * Returns true if this is a valid user-defined property (one with a ':').
 */
boolean_t
zfs_prop_user(const char *name)
{
	int i;
	char c;
	boolean_t foundsep = B_FALSE;

	for (i = 0; i < strlen(name); i++) {
		c = name[i];
		if (!zprop_valid_char(c))
			return (B_FALSE);
		if (c == ':')
			foundsep = B_TRUE;
	}

	if (!foundsep)
		return (B_FALSE);

	return (B_TRUE);
}

/*
 * Returns true if this is a valid userspace-type property (one with a '@').
 * Note that after the @, any character is valid (eg, another @, for SID
 * user@domain).
 */
boolean_t
zfs_prop_userquota(const char *name)
{
	zfs_userquota_prop_t prop;

	for (prop = 0; prop < ZFS_NUM_USERQUOTA_PROPS; prop++) {
		if (strncmp(name, zfs_userquota_prop_prefixes[prop],
		    strlen(zfs_userquota_prop_prefixes[prop])) == 0) {
			return (B_TRUE);
		}
	}

	return (B_FALSE);
}

/*
 * Returns true if this is a valid written@ property.
 * Note that after the @, any character is valid (eg, another @, for
 * written@pool/fs@origin).
 */
boolean_t
zfs_prop_written(const char *name)
{
	static const char *prop_prefix = "written@";
	static const char *book_prefix = "written#";
	return (strncmp(name, prop_prefix, strlen(prop_prefix)) == 0 ||
	    strncmp(name, book_prefix, strlen(book_prefix)) == 0);
}

/*
 * Tables of index types, plus functions to convert between the user view
 * (strings) and internal representation (uint64_t).
 */
int
zfs_prop_string_to_index(zfs_prop_t prop, const char *string, uint64_t *index)
{
	return (zprop_string_to_index(prop, string, index, ZFS_TYPE_DATASET));
}

int
zfs_prop_index_to_string(zfs_prop_t prop, uint64_t index, const char **string)
{
	return (zprop_index_to_string(prop, index, string, ZFS_TYPE_DATASET));
}

uint64_t
zfs_prop_random_value(zfs_prop_t prop, uint64_t seed)
{
	return (zprop_random_value(prop, seed, ZFS_TYPE_DATASET));
}

/*
 * Returns TRUE if the property applies to any of the given dataset types.
 */
boolean_t
zfs_prop_valid_for_type(int prop, zfs_type_t types, boolean_t headcheck)
{
	return (zprop_valid_for_type(prop, types, headcheck));
}

zprop_type_t
zfs_prop_get_type(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_proptype);
}

/*
 * Returns TRUE if the property is readonly.
 */
boolean_t
zfs_prop_readonly(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
	    zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
	    zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
}

/*
 * Returns TRUE if the property is visible (not hidden).
 */
boolean_t
zfs_prop_visible(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_visible &&
	    zfs_prop_table[prop].pd_zfs_mod_supported);
}

/*
 * Returns TRUE if the property is only allowed to be set once.
 */
boolean_t
zfs_prop_setonce(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
	    zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
}

const char *
zfs_prop_default_string(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_strdefault);
}

uint64_t
zfs_prop_default_numeric(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_numdefault);
}

/*
 * Given a dataset property ID, returns the corresponding name.
 * Assuming the zfs dataset property ID is valid.
 */
const char *
zfs_prop_to_name(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_name);
}

/*
 * Returns TRUE if the property is inheritable.
 */
boolean_t
zfs_prop_inheritable(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
	    zfs_prop_table[prop].pd_attr == PROP_ONETIME);
}

/*
 * Returns TRUE if property is one of the encryption properties that requires
 * a loaded encryption key to modify.
 */
boolean_t
zfs_prop_encryption_key_param(zfs_prop_t prop)
{
	/*
	 * keylocation does not count as an encryption property. It can be
	 * changed at will without needing the master keys.
	 */
	return (prop == ZFS_PROP_PBKDF2_SALT || prop == ZFS_PROP_PBKDF2_ITERS ||
	    prop == ZFS_PROP_KEYFORMAT);
}

/*
 * Helper function used by both kernelspace and userspace to check the
 * keylocation property. If encrypted is set, the keylocation must be valid
 * for an encrypted dataset.
 */
boolean_t
zfs_prop_valid_keylocation(const char *str, boolean_t encrypted)
{
	if (strcmp("none", str) == 0)
		return (!encrypted);
	else if (strcmp("prompt", str) == 0)
		return (B_TRUE);
	else if (strlen(str) > 8 && strncmp("file:///", str, 8) == 0)
		return (B_TRUE);
	else if (strlen(str) > 8 && strncmp("https://", str, 8) == 0)
		return (B_TRUE);
	else if (strlen(str) > 7 && strncmp("http://", str, 7) == 0)
		return (B_TRUE);

	return (B_FALSE);
}


#ifndef _KERNEL
#include <libzfs.h>

/*
 * Returns a string describing the set of acceptable values for the given
 * zfs property, or NULL if it cannot be set.
 */
const char *
zfs_prop_values(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_values);
}

/*
 * Returns TRUE if this property is a string type.  Note that index types
 * (compression, checksum) are treated as strings in userland, even though they
 * are stored numerically on disk.
 */
int
zfs_prop_is_string(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
	    zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
}

/*
 * Returns the column header for the given property.  Used only in
 * 'zfs list -o', but centralized here with the other property information.
 */
const char *
zfs_prop_column_name(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_colname);
}

/*
 * Returns whether the given property should be displayed right-justified for
 * 'zfs list'.
 */
boolean_t
zfs_prop_align_right(zfs_prop_t prop)
{
	return (zfs_prop_table[prop].pd_rightalign);
}

#endif

#if defined(_KERNEL)

#include <sys/simd.h>

#if defined(HAVE_KERNEL_FPU_INTERNAL)
union fpregs_state **zfs_kfpu_fpregs;
EXPORT_SYMBOL(zfs_kfpu_fpregs);
#endif /* HAVE_KERNEL_FPU_INTERNAL */

static int __init
zcommon_init(void)
{
	int error = kfpu_init();
	if (error)
		return (error);

	fletcher_4_init();

	return (0);
}

static void __exit
zcommon_fini(void)
{
	fletcher_4_fini();
	kfpu_fini();
}

module_init_early(zcommon_init);
module_exit(zcommon_fini);

#endif

ZFS_MODULE_DESCRIPTION("Generic ZFS support");
ZFS_MODULE_AUTHOR(ZFS_META_AUTHOR);
ZFS_MODULE_LICENSE(ZFS_META_LICENSE);
ZFS_MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);

/* zfs dataset property functions */
EXPORT_SYMBOL(zfs_userquota_prop_prefixes);
EXPORT_SYMBOL(zfs_prop_init);
EXPORT_SYMBOL(zfs_prop_get_type);
EXPORT_SYMBOL(zfs_prop_get_table);
EXPORT_SYMBOL(zfs_prop_delegatable);
EXPORT_SYMBOL(zfs_prop_visible);

/* Dataset property functions shared between libzfs and kernel. */
EXPORT_SYMBOL(zfs_prop_default_string);
EXPORT_SYMBOL(zfs_prop_default_numeric);
EXPORT_SYMBOL(zfs_prop_readonly);
EXPORT_SYMBOL(zfs_prop_inheritable);
EXPORT_SYMBOL(zfs_prop_encryption_key_param);
EXPORT_SYMBOL(zfs_prop_valid_keylocation);
EXPORT_SYMBOL(zfs_prop_setonce);
EXPORT_SYMBOL(zfs_prop_to_name);
EXPORT_SYMBOL(zfs_name_to_prop);
EXPORT_SYMBOL(zfs_prop_user);
EXPORT_SYMBOL(zfs_prop_userquota);
EXPORT_SYMBOL(zfs_prop_index_to_string);
EXPORT_SYMBOL(zfs_prop_string_to_index);
EXPORT_SYMBOL(zfs_prop_valid_for_type);
EXPORT_SYMBOL(zfs_prop_written);