module/zcommon/zfs_prop.c

   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  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  24  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  25  * Copyright 2016, Joyent, Inc.
  26  */
  27
  28 /* Portions Copyright 2010 Robert Milkowski */
  29
  30 #include <sys/zio.h>
  31 #include <sys/spa.h>
  32 #include <sys/u8_textprep.h>
  33 #include <sys/zfs_acl.h>
  34 #include <sys/zfs_ioctl.h>
  35 #include <sys/zfs_znode.h>
  36 #include <sys/dsl_crypt.h>
  37
  38 #include "zfs_prop.h"
  39 #include "zfs_deleg.h"
  40 #include "zfs_fletcher.h"
  41
  42 #if defined(_KERNEL)
  43 #include <sys/systm.h>
  44 #else
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #include <ctype.h>
  48 #endif
  49
  50 static zprop_desc_t zfs_prop_table[ZFS_NUM_PROPS];
  51
  52 /* Note this is indexed by zfs_userquota_prop_t, keep the order the same */
  53 const char *zfs_userquota_prop_prefixes[] = {
  54         "userused@",
  55         "userquota@",
  56         "groupused@",
  57         "groupquota@",
  58         "userobjused@",
  59         "userobjquota@",
  60         "groupobjused@",
  61         "groupobjquota@",
  62         "projectused@",
  63         "projectquota@",
  64         "projectobjused@",
  65         "projectobjquota@"
  66 };
  67
  68 zprop_desc_t *
  69 zfs_prop_get_table(void)
  70 {
  71         return (zfs_prop_table);
  72 }
  73
  74 void
  75 zfs_prop_init(void)
  76 {
  77         static zprop_index_t checksum_table[] = {
  78                 { "on",         ZIO_CHECKSUM_ON },
  79                 { "off",        ZIO_CHECKSUM_OFF },
  80                 { "fletcher2",  ZIO_CHECKSUM_FLETCHER_2 },
  81                 { "fletcher4",  ZIO_CHECKSUM_FLETCHER_4 },
  82                 { "sha256",     ZIO_CHECKSUM_SHA256 },
  83                 { "noparity",   ZIO_CHECKSUM_NOPARITY },
  84                 { "sha512",     ZIO_CHECKSUM_SHA512 },
  85                 { "skein",      ZIO_CHECKSUM_SKEIN },
  86                 { "edonr",      ZIO_CHECKSUM_EDONR },
  87                 { NULL }
  88         };
  89
  90         static zprop_index_t dedup_table[] = {
  91                 { "on",         ZIO_CHECKSUM_ON },
  92                 { "off",        ZIO_CHECKSUM_OFF },
  93                 { "verify",     ZIO_CHECKSUM_ON | ZIO_CHECKSUM_VERIFY },
  94                 { "sha256",     ZIO_CHECKSUM_SHA256 },
  95                 { "sha256,verify",
  96                                 ZIO_CHECKSUM_SHA256 | ZIO_CHECKSUM_VERIFY },
  97                 { "sha512",     ZIO_CHECKSUM_SHA512 },
  98                 { "sha512,verify",
  99                                 ZIO_CHECKSUM_SHA512 | ZIO_CHECKSUM_VERIFY },
 100                 { "skein",      ZIO_CHECKSUM_SKEIN },
 101                 { "skein,verify",
 102                                 ZIO_CHECKSUM_SKEIN | ZIO_CHECKSUM_VERIFY },
 103                 { "edonr,verify",
 104                                 ZIO_CHECKSUM_EDONR | ZIO_CHECKSUM_VERIFY },
 105                 { NULL }
 106         };
 107
 108         static zprop_index_t compress_table[] = {
 109                 { "on",         ZIO_COMPRESS_ON },
 110                 { "off",        ZIO_COMPRESS_OFF },
 111                 { "lzjb",       ZIO_COMPRESS_LZJB },
 112                 { "gzip",       ZIO_COMPRESS_GZIP_6 },  /* gzip default */
 113                 { "gzip-1",     ZIO_COMPRESS_GZIP_1 },
 114                 { "gzip-2",     ZIO_COMPRESS_GZIP_2 },
 115                 { "gzip-3",     ZIO_COMPRESS_GZIP_3 },
 116                 { "gzip-4",     ZIO_COMPRESS_GZIP_4 },
 117                 { "gzip-5",     ZIO_COMPRESS_GZIP_5 },
 118                 { "gzip-6",     ZIO_COMPRESS_GZIP_6 },
 119                 { "gzip-7",     ZIO_COMPRESS_GZIP_7 },
 120                 { "gzip-8",     ZIO_COMPRESS_GZIP_8 },
 121                 { "gzip-9",     ZIO_COMPRESS_GZIP_9 },
 122                 { "zle",        ZIO_COMPRESS_ZLE },
 123                 { "lz4",        ZIO_COMPRESS_LZ4 },
 124                 { NULL }
 125         };
 126
 127         static zprop_index_t crypto_table[] = {
 128                 { "on",                 ZIO_CRYPT_ON },
 129                 { "off",                ZIO_CRYPT_OFF },
 130                 { "aes-128-ccm",        ZIO_CRYPT_AES_128_CCM },
 131                 { "aes-192-ccm",        ZIO_CRYPT_AES_192_CCM },
 132                 { "aes-256-ccm",        ZIO_CRYPT_AES_256_CCM },
 133                 { "aes-128-gcm",        ZIO_CRYPT_AES_128_GCM },
 134                 { "aes-192-gcm",        ZIO_CRYPT_AES_192_GCM },
 135                 { "aes-256-gcm",        ZIO_CRYPT_AES_256_GCM },
 136                 { NULL }
 137         };
 138
 139         static zprop_index_t keyformat_table[] = {
 140                 { "none",               ZFS_KEYFORMAT_NONE },
 141                 { "raw",                ZFS_KEYFORMAT_RAW },
 142                 { "hex",                ZFS_KEYFORMAT_HEX },
 143                 { "passphrase",         ZFS_KEYFORMAT_PASSPHRASE },
 144                 { NULL }
 145         };
 146
 147         static zprop_index_t snapdir_table[] = {
 148                 { "hidden",     ZFS_SNAPDIR_HIDDEN },
 149                 { "visible",    ZFS_SNAPDIR_VISIBLE },
 150                 { NULL }
 151         };
 152
 153         static zprop_index_t snapdev_table[] = {
 154                 { "hidden",     ZFS_SNAPDEV_HIDDEN },
 155                 { "visible",    ZFS_SNAPDEV_VISIBLE },
 156                 { NULL }
 157         };
 158
 159         static zprop_index_t acltype_table[] = {
 160                 { "off",        ZFS_ACLTYPE_OFF },
 161                 { "disabled",   ZFS_ACLTYPE_OFF },
 162                 { "noacl",      ZFS_ACLTYPE_OFF },
 163                 { "posixacl",   ZFS_ACLTYPE_POSIXACL },
 164                 { NULL }
 165         };
 166
 167         static zprop_index_t acl_inherit_table[] = {
 168                 { "discard",    ZFS_ACL_DISCARD },
 169                 { "noallow",    ZFS_ACL_NOALLOW },
 170                 { "restricted", ZFS_ACL_RESTRICTED },
 171                 { "passthrough", ZFS_ACL_PASSTHROUGH },
 172                 { "secure",     ZFS_ACL_RESTRICTED }, /* bkwrd compatibility */
 173                 { "passthrough-x", ZFS_ACL_PASSTHROUGH_X },
 174                 { NULL }
 175         };
 176
 177         static zprop_index_t case_table[] = {
 178                 { "sensitive",          ZFS_CASE_SENSITIVE },
 179                 { "insensitive",        ZFS_CASE_INSENSITIVE },
 180                 { "mixed",              ZFS_CASE_MIXED },
 181                 { NULL }
 182         };
 183
 184         static zprop_index_t copies_table[] = {
 185                 { "1",          1 },
 186                 { "2",          2 },
 187                 { "3",          3 },
 188                 { NULL }
 189         };
 190
 191         /*
 192          * Use the unique flags we have to send to u8_strcmp() and/or
 193          * u8_textprep() to represent the various normalization property
 194          * values.
 195          */
 196         static zprop_index_t normalize_table[] = {
 197                 { "none",       0 },
 198                 { "formD",      U8_TEXTPREP_NFD },
 199                 { "formKC",     U8_TEXTPREP_NFKC },
 200                 { "formC",      U8_TEXTPREP_NFC },
 201                 { "formKD",     U8_TEXTPREP_NFKD },
 202                 { NULL }
 203         };
 204
 205         static zprop_index_t version_table[] = {
 206                 { "1",          1 },
 207                 { "2",          2 },
 208                 { "3",          3 },
 209                 { "4",          4 },
 210                 { "5",          5 },
 211                 { "current",    ZPL_VERSION },
 212                 { NULL }
 213         };
 214
 215         static zprop_index_t boolean_table[] = {
 216                 { "off",        0 },
 217                 { "on",         1 },
 218                 { NULL }
 219         };
 220
 221         static zprop_index_t keystatus_table[] = {
 222                 { "none",               ZFS_KEYSTATUS_NONE},
 223                 { "unavailable",        ZFS_KEYSTATUS_UNAVAILABLE},
 224                 { "available",          ZFS_KEYSTATUS_AVAILABLE},
 225                 { NULL }
 226         };
 227
 228         static zprop_index_t logbias_table[] = {
 229                 { "latency",    ZFS_LOGBIAS_LATENCY },
 230                 { "throughput", ZFS_LOGBIAS_THROUGHPUT },
 231                 { NULL }
 232         };
 233
 234         static zprop_index_t canmount_table[] = {
 235                 { "off",        ZFS_CANMOUNT_OFF },
 236                 { "on",         ZFS_CANMOUNT_ON },
 237                 { "noauto",     ZFS_CANMOUNT_NOAUTO },
 238                 { NULL }
 239         };
 240
 241         static zprop_index_t cache_table[] = {
 242                 { "none",       ZFS_CACHE_NONE },
 243                 { "metadata",   ZFS_CACHE_METADATA },
 244                 { "all",        ZFS_CACHE_ALL },
 245                 { NULL }
 246         };
 247
 248         static zprop_index_t sync_table[] = {
 249                 { "standard",   ZFS_SYNC_STANDARD },
 250                 { "always",     ZFS_SYNC_ALWAYS },
 251                 { "disabled",   ZFS_SYNC_DISABLED },
 252                 { NULL }
 253         };
 254
 255         static zprop_index_t xattr_table[] = {
 256                 { "off",        ZFS_XATTR_OFF },
 257                 { "on",         ZFS_XATTR_DIR },
 258                 { "sa",         ZFS_XATTR_SA },
 259                 { "dir",        ZFS_XATTR_DIR },
 260                 { NULL }
 261         };
 262
 263         static zprop_index_t dnsize_table[] = {
 264                 { "legacy",     ZFS_DNSIZE_LEGACY },
 265                 { "auto",       ZFS_DNSIZE_AUTO },
 266                 { "1k",         ZFS_DNSIZE_1K },
 267                 { "2k",         ZFS_DNSIZE_2K },
 268                 { "4k",         ZFS_DNSIZE_4K },
 269                 { "8k",         ZFS_DNSIZE_8K },
 270                 { "16k",        ZFS_DNSIZE_16K },
 271                 { NULL }
 272         };
 273
 274         static zprop_index_t redundant_metadata_table[] = {
 275                 { "all",        ZFS_REDUNDANT_METADATA_ALL },
 276                 { "most",       ZFS_REDUNDANT_METADATA_MOST },
 277                 { NULL }
 278         };
 279
 280         static zprop_index_t volmode_table[] = {
 281                 { "default",    ZFS_VOLMODE_DEFAULT },
 282                 { "full",       ZFS_VOLMODE_GEOM },
 283                 { "geom",       ZFS_VOLMODE_GEOM },
 284                 { "dev",        ZFS_VOLMODE_DEV },
 285                 { "none",       ZFS_VOLMODE_NONE },
 286                 { NULL }
 287         };
 288
 289         /* inherit index properties */
 290         zprop_register_index(ZFS_PROP_REDUNDANT_METADATA, "redundant_metadata",
 291             ZFS_REDUNDANT_METADATA_ALL,
 292             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 293             "all | most", "REDUND_MD",
 294             redundant_metadata_table);
 295         zprop_register_index(ZFS_PROP_SYNC, "sync", ZFS_SYNC_STANDARD,
 296             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 297             "standard | always | disabled", "SYNC",
 298             sync_table);
 299         zprop_register_index(ZFS_PROP_CHECKSUM, "checksum",
 300             ZIO_CHECKSUM_DEFAULT, PROP_INHERIT, ZFS_TYPE_FILESYSTEM |
 301             ZFS_TYPE_VOLUME,
 302             "on | off | fletcher2 | fletcher4 | sha256 | sha512 | "
 303             "skein | edonr", "CHECKSUM", checksum_table);
 304         zprop_register_index(ZFS_PROP_DEDUP, "dedup", ZIO_CHECKSUM_OFF,
 305             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 306             "on | off | verify | sha256[,verify], sha512[,verify], "
 307             "skein[,verify], edonr,verify", "DEDUP", dedup_table);
 308         zprop_register_index(ZFS_PROP_COMPRESSION, "compression",
 309             ZIO_COMPRESS_DEFAULT, PROP_INHERIT,
 310             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 311             "on | off | lzjb | gzip | gzip-[1-9] | zle | lz4", "COMPRESS",
 312             compress_table);
 313         zprop_register_index(ZFS_PROP_SNAPDIR, "snapdir", ZFS_SNAPDIR_HIDDEN,
 314             PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 315             "hidden | visible", "SNAPDIR", snapdir_table);
 316         zprop_register_index(ZFS_PROP_SNAPDEV, "snapdev", ZFS_SNAPDEV_HIDDEN,
 317             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 318             "hidden | visible", "SNAPDEV", snapdev_table);
 319         zprop_register_index(ZFS_PROP_ACLTYPE, "acltype", ZFS_ACLTYPE_OFF,
 320             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 321             "noacl | posixacl", "ACLTYPE", acltype_table);
 322         zprop_register_index(ZFS_PROP_ACLINHERIT, "aclinherit",
 323             ZFS_ACL_RESTRICTED, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 324             "discard | noallow | restricted | passthrough | passthrough-x",
 325             "ACLINHERIT", acl_inherit_table);
 326         zprop_register_index(ZFS_PROP_COPIES, "copies", 1, PROP_INHERIT,
 327             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 328             "1 | 2 | 3", "COPIES", copies_table);
 329         zprop_register_index(ZFS_PROP_PRIMARYCACHE, "primarycache",
 330             ZFS_CACHE_ALL, PROP_INHERIT,
 331             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
 332             "all | none | metadata", "PRIMARYCACHE", cache_table);
 333         zprop_register_index(ZFS_PROP_SECONDARYCACHE, "secondarycache",
 334             ZFS_CACHE_ALL, PROP_INHERIT,
 335             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
 336             "all | none | metadata", "SECONDARYCACHE", cache_table);
 337         zprop_register_index(ZFS_PROP_LOGBIAS, "logbias", ZFS_LOGBIAS_LATENCY,
 338             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 339             "latency | throughput", "LOGBIAS", logbias_table);
 340         zprop_register_index(ZFS_PROP_XATTR, "xattr", ZFS_XATTR_DIR,
 341             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 342             "on | off | dir | sa", "XATTR", xattr_table);
 343         zprop_register_index(ZFS_PROP_DNODESIZE, "dnodesize",
 344             ZFS_DNSIZE_LEGACY, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 345             "legacy | auto | 1k | 2k | 4k | 8k | 16k", "DNSIZE", dnsize_table);
 346         zprop_register_index(ZFS_PROP_VOLMODE, "volmode",
 347             ZFS_VOLMODE_DEFAULT, PROP_INHERIT,
 348             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 349             "default | full | geom | dev | none", "VOLMODE", volmode_table);
 350
 351         /* inherit index (boolean) properties */
 352         zprop_register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
 353             ZFS_TYPE_FILESYSTEM, "on | off", "ATIME", boolean_table);
 354         zprop_register_index(ZFS_PROP_RELATIME, "relatime", 0, PROP_INHERIT,
 355             ZFS_TYPE_FILESYSTEM, "on | off", "RELATIME", boolean_table);
 356         zprop_register_index(ZFS_PROP_DEVICES, "devices", 1, PROP_INHERIT,
 357             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "DEVICES",
 358             boolean_table);
 359         zprop_register_index(ZFS_PROP_EXEC, "exec", 1, PROP_INHERIT,
 360             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "EXEC",
 361             boolean_table);
 362         zprop_register_index(ZFS_PROP_SETUID, "setuid", 1, PROP_INHERIT,
 363             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "SETUID",
 364             boolean_table);
 365         zprop_register_index(ZFS_PROP_READONLY, "readonly", 0, PROP_INHERIT,
 366             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "on | off", "RDONLY",
 367             boolean_table);
 368         zprop_register_index(ZFS_PROP_ZONED, "zoned", 0, PROP_INHERIT,
 369             ZFS_TYPE_FILESYSTEM, "on | off", "ZONED", boolean_table);
 370         zprop_register_index(ZFS_PROP_VSCAN, "vscan", 0, PROP_INHERIT,
 371             ZFS_TYPE_FILESYSTEM, "on | off", "VSCAN", boolean_table);
 372         zprop_register_index(ZFS_PROP_NBMAND, "nbmand", 0, PROP_INHERIT,
 373             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "NBMAND",
 374             boolean_table);
 375         zprop_register_index(ZFS_PROP_OVERLAY, "overlay", 0, PROP_INHERIT,
 376             ZFS_TYPE_FILESYSTEM, "on | off", "OVERLAY", boolean_table);
 377
 378         /* default index properties */
 379         zprop_register_index(ZFS_PROP_VERSION, "version", 0, PROP_DEFAULT,
 380             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 381             "1 | 2 | 3 | 4 | 5 | current", "VERSION", version_table);
 382         zprop_register_index(ZFS_PROP_CANMOUNT, "canmount", ZFS_CANMOUNT_ON,
 383             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM, "on | off | noauto",
 384             "CANMOUNT", canmount_table);
 385
 386         /* readonly index properties */
 387         zprop_register_index(ZFS_PROP_MOUNTED, "mounted", 0, PROP_READONLY,
 388             ZFS_TYPE_FILESYSTEM, "yes | no", "MOUNTED", boolean_table);
 389         zprop_register_index(ZFS_PROP_DEFER_DESTROY, "defer_destroy", 0,
 390             PROP_READONLY, ZFS_TYPE_SNAPSHOT, "yes | no", "DEFER_DESTROY",
 391             boolean_table);
 392         zprop_register_index(ZFS_PROP_KEYSTATUS, "keystatus",
 393             ZFS_KEYSTATUS_NONE, PROP_READONLY, ZFS_TYPE_DATASET,
 394             "none | unavailable | available",
 395             "KEYSTATUS", keystatus_table);
 396
 397         /* set once index properties */
 398         zprop_register_index(ZFS_PROP_NORMALIZE, "normalization", 0,
 399             PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 400             "none | formC | formD | formKC | formKD", "NORMALIZATION",
 401             normalize_table);
 402         zprop_register_index(ZFS_PROP_CASE, "casesensitivity",
 403             ZFS_CASE_SENSITIVE, PROP_ONETIME, ZFS_TYPE_FILESYSTEM |
 404             ZFS_TYPE_SNAPSHOT,
 405             "sensitive | insensitive | mixed", "CASE", case_table);
 406         zprop_register_index(ZFS_PROP_KEYFORMAT, "keyformat",
 407             ZFS_KEYFORMAT_NONE, PROP_ONETIME_DEFAULT,
 408             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 409             "none | raw | hex | passphrase", "KEYFORMAT", keyformat_table);
 410         zprop_register_index(ZFS_PROP_ENCRYPTION, "encryption",
 411             ZIO_CRYPT_DEFAULT, PROP_ONETIME, ZFS_TYPE_DATASET,
 412             "on | off | aes-128-ccm | aes-192-ccm | aes-256-ccm | "
 413             "aes-128-gcm | aes-192-gcm | aes-256-gcm", "ENCRYPTION",
 414             crypto_table);
 415
 416         /* set once index (boolean) properties */
 417         zprop_register_index(ZFS_PROP_UTF8ONLY, "utf8only", 0, PROP_ONETIME,
 418             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 419             "on | off", "UTF8ONLY", boolean_table);
 420
 421         /* string properties */
 422         zprop_register_string(ZFS_PROP_ORIGIN, "origin", NULL, PROP_READONLY,
 423             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<snapshot>", "ORIGIN");
 424         zprop_register_string(ZFS_PROP_CLONES, "clones", NULL, PROP_READONLY,
 425             ZFS_TYPE_SNAPSHOT, "<dataset>[,...]", "CLONES");
 426         zprop_register_string(ZFS_PROP_MOUNTPOINT, "mountpoint", "/",
 427             PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "<path> | legacy | none",
 428             "MOUNTPOINT");
 429         zprop_register_string(ZFS_PROP_SHARENFS, "sharenfs", "off",
 430             PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "on | off | share(1M) options",
 431             "SHARENFS");
 432         zprop_register_string(ZFS_PROP_TYPE, "type", NULL, PROP_READONLY,
 433             ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
 434             "filesystem | volume | snapshot | bookmark", "TYPE");
 435         zprop_register_string(ZFS_PROP_SHARESMB, "sharesmb", "off",
 436             PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 437             "on | off | sharemgr(1M) options", "SHARESMB");
 438         zprop_register_string(ZFS_PROP_MLSLABEL, "mlslabel",
 439             ZFS_MLSLABEL_DEFAULT, PROP_INHERIT, ZFS_TYPE_DATASET,
 440             "<sensitivity label>", "MLSLABEL");
 441         zprop_register_string(ZFS_PROP_SELINUX_CONTEXT, "context",
 442             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux context>",
 443             "CONTEXT");
 444         zprop_register_string(ZFS_PROP_SELINUX_FSCONTEXT, "fscontext",
 445             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux fscontext>",
 446             "FSCONTEXT");
 447         zprop_register_string(ZFS_PROP_SELINUX_DEFCONTEXT, "defcontext",
 448             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux defcontext>",
 449             "DEFCONTEXT");
 450         zprop_register_string(ZFS_PROP_SELINUX_ROOTCONTEXT, "rootcontext",
 451             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux rootcontext>",
 452             "ROOTCONTEXT");
 453         zprop_register_string(ZFS_PROP_RECEIVE_RESUME_TOKEN,
 454             "receive_resume_token",
 455             NULL, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 456             "<string token>", "RESUMETOK");
 457         zprop_register_string(ZFS_PROP_ENCRYPTION_ROOT, "encryptionroot", NULL,
 458             PROP_READONLY, ZFS_TYPE_DATASET, "<filesystem | volume>",
 459             "ENCROOT");
 460         zprop_register_string(ZFS_PROP_KEYLOCATION, "keylocation",
 461             "none", PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 462             "prompt | <file URI>", "KEYLOCATION");
 463
 464         /* readonly number properties */
 465         zprop_register_number(ZFS_PROP_USED, "used", 0, PROP_READONLY,
 466             ZFS_TYPE_DATASET, "<size>", "USED");
 467         zprop_register_number(ZFS_PROP_AVAILABLE, "available", 0, PROP_READONLY,
 468             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "AVAIL");
 469         zprop_register_number(ZFS_PROP_REFERENCED, "referenced", 0,
 470             PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "REFER");
 471         zprop_register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0,
 472             PROP_READONLY, ZFS_TYPE_DATASET,
 473             "<1.00x or higher if compressed>", "RATIO");
 474         zprop_register_number(ZFS_PROP_REFRATIO, "refcompressratio", 0,
 475             PROP_READONLY, ZFS_TYPE_DATASET,
 476             "<1.00x or higher if compressed>", "REFRATIO");
 477         zprop_register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize",
 478             ZVOL_DEFAULT_BLOCKSIZE, PROP_ONETIME,
 479             ZFS_TYPE_VOLUME, "512 to 128k, power of 2", "VOLBLOCK");
 480         zprop_register_number(ZFS_PROP_USEDSNAP, "usedbysnapshots", 0,
 481             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 482             "USEDSNAP");
 483         zprop_register_number(ZFS_PROP_USEDDS, "usedbydataset", 0,
 484             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 485             "USEDDS");
 486         zprop_register_number(ZFS_PROP_USEDCHILD, "usedbychildren", 0,
 487             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 488             "USEDCHILD");
 489         zprop_register_number(ZFS_PROP_USEDREFRESERV, "usedbyrefreservation", 0,
 490             PROP_READONLY,
 491             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDREFRESERV");
 492         zprop_register_number(ZFS_PROP_USERREFS, "userrefs", 0, PROP_READONLY,
 493             ZFS_TYPE_SNAPSHOT, "<count>", "USERREFS");
 494         zprop_register_number(ZFS_PROP_WRITTEN, "written", 0, PROP_READONLY,
 495             ZFS_TYPE_DATASET, "<size>", "WRITTEN");
 496         zprop_register_number(ZFS_PROP_LOGICALUSED, "logicalused", 0,
 497             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 498             "LUSED");
 499         zprop_register_number(ZFS_PROP_LOGICALREFERENCED, "logicalreferenced",
 500             0, PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "LREFER");
 501         zprop_register_number(ZFS_PROP_FILESYSTEM_COUNT, "filesystem_count",
 502             UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
 503             "<count>", "FSCOUNT");
 504         zprop_register_number(ZFS_PROP_SNAPSHOT_COUNT, "snapshot_count",
 505             UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 506             "<count>", "SSCOUNT");
 507         zprop_register_number(ZFS_PROP_GUID, "guid", 0, PROP_READONLY,
 508             ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "GUID");
 509         zprop_register_number(ZFS_PROP_CREATETXG, "createtxg", 0, PROP_READONLY,
 510             ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "CREATETXG");
 511         zprop_register_hidden(ZFS_PROP_REMAPTXG, "remaptxg", PROP_TYPE_NUMBER,
 512             PROP_READONLY, ZFS_TYPE_DATASET, "REMAPTXG");
 513         zprop_register_number(ZFS_PROP_PBKDF2_ITERS, "pbkdf2iters",
 514             0, PROP_ONETIME_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 515             "<iters>", "PBKDF2ITERS");
 516
 517         /* default number properties */
 518         zprop_register_number(ZFS_PROP_QUOTA, "quota", 0, PROP_DEFAULT,
 519             ZFS_TYPE_FILESYSTEM, "<size> | none", "QUOTA");
 520         zprop_register_number(ZFS_PROP_RESERVATION, "reservation", 0,
 521             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 522             "<size> | none", "RESERV");
 523         zprop_register_number(ZFS_PROP_VOLSIZE, "volsize", 0, PROP_DEFAULT,
 524             ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME, "<size>", "VOLSIZE");
 525         zprop_register_number(ZFS_PROP_REFQUOTA, "refquota", 0, PROP_DEFAULT,
 526             ZFS_TYPE_FILESYSTEM, "<size> | none", "REFQUOTA");
 527         zprop_register_number(ZFS_PROP_REFRESERVATION, "refreservation", 0,
 528             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 529             "<size> | none", "REFRESERV");
 530         zprop_register_number(ZFS_PROP_FILESYSTEM_LIMIT, "filesystem_limit",
 531             UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM,
 532             "<count> | none", "FSLIMIT");
 533         zprop_register_number(ZFS_PROP_SNAPSHOT_LIMIT, "snapshot_limit",
 534             UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 535             "<count> | none", "SSLIMIT");
 536
 537         /* inherit number properties */
 538         zprop_register_number(ZFS_PROP_RECORDSIZE, "recordsize",
 539             SPA_OLD_MAXBLOCKSIZE, PROP_INHERIT,
 540             ZFS_TYPE_FILESYSTEM, "512 to 1M, power of 2", "RECSIZE");
 541
 542         /* hidden properties */
 543         zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,
 544             PROP_READONLY, ZFS_TYPE_SNAPSHOT, "NUMCLONES");
 545         zprop_register_hidden(ZFS_PROP_NAME, "name", PROP_TYPE_STRING,
 546             PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "NAME");
 547         zprop_register_hidden(ZFS_PROP_ISCSIOPTIONS, "iscsioptions",
 548             PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME, "ISCSIOPTIONS");
 549         zprop_register_hidden(ZFS_PROP_STMF_SHAREINFO, "stmf_sbd_lu",
 550             PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME,
 551             "STMF_SBD_LU");
 552         zprop_register_hidden(ZFS_PROP_USERACCOUNTING, "useraccounting",
 553             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET,
 554             "USERACCOUNTING");
 555         zprop_register_hidden(ZFS_PROP_UNIQUE, "unique", PROP_TYPE_NUMBER,
 556             PROP_READONLY, ZFS_TYPE_DATASET, "UNIQUE");
 557         zprop_register_hidden(ZFS_PROP_OBJSETID, "objsetid", PROP_TYPE_NUMBER,
 558             PROP_READONLY, ZFS_TYPE_DATASET, "OBJSETID");
 559         zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent",
 560             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT");
 561         zprop_register_hidden(ZFS_PROP_PREV_SNAP, "prevsnap", PROP_TYPE_STRING,
 562             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PREVSNAP");
 563         zprop_register_hidden(ZFS_PROP_PBKDF2_SALT, "pbkdf2salt",
 564             PROP_TYPE_NUMBER, PROP_ONETIME_DEFAULT,
 565             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PBKDF2SALT");
 566         zprop_register_hidden(ZFS_PROP_KEY_GUID, "keyguid", PROP_TYPE_NUMBER,
 567             PROP_READONLY, ZFS_TYPE_DATASET, "KEYGUID");
 568
 569         /*
 570          * Property to be removed once libbe is integrated
 571          */
 572         zprop_register_hidden(ZFS_PROP_PRIVATE, "priv_prop",
 573             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
 574             "PRIV_PROP");
 575
 576         /* oddball properties */
 577         zprop_register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0,
 578             NULL, PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
 579             "<date>", "CREATION", B_FALSE, B_TRUE, NULL);
 580 }
 581
 582 boolean_t
 583 zfs_prop_delegatable(zfs_prop_t prop)
 584 {
 585         zprop_desc_t *pd = &zfs_prop_table[prop];
 586
 587         /* The mlslabel property is never delegatable. */
 588         if (prop == ZFS_PROP_MLSLABEL)
 589                 return (B_FALSE);
 590
 591         return (pd->pd_attr != PROP_READONLY);
 592 }
 593
 594 /*
 595  * Given a zfs dataset property name, returns the corresponding property ID.
 596  */
 597 zfs_prop_t
 598 zfs_name_to_prop(const char *propname)
 599 {
 600         return (zprop_name_to_prop(propname, ZFS_TYPE_DATASET));
 601 }
 602
 603 /*
 604  * For user property names, we allow all lowercase alphanumeric characters, plus
 605  * a few useful punctuation characters.
 606  */
 607 static int
 608 valid_char(char c)
 609 {
 610         return ((c >= 'a' && c <= 'z') ||
 611             (c >= '0' && c <= '9') ||
 612             c == '-' || c == '_' || c == '.' || c == ':');
 613 }
 614
 615 /*
 616  * Returns true if this is a valid user-defined property (one with a ':').
 617  */
 618 boolean_t
 619 zfs_prop_user(const char *name)
 620 {
 621         int i;
 622         char c;
 623         boolean_t foundsep = B_FALSE;
 624
 625         for (i = 0; i < strlen(name); i++) {
 626                 c = name[i];
 627                 if (!valid_char(c))
 628                         return (B_FALSE);
 629                 if (c == ':')
 630                         foundsep = B_TRUE;
 631         }
 632
 633         if (!foundsep)
 634                 return (B_FALSE);
 635
 636         return (B_TRUE);
 637 }
 638
 639 /*
 640  * Returns true if this is a valid userspace-type property (one with a '@').
 641  * Note that after the @, any character is valid (eg, another @, for SID
 642  * user@domain).
 643  */
 644 boolean_t
 645 zfs_prop_userquota(const char *name)
 646 {
 647         zfs_userquota_prop_t prop;
 648
 649         for (prop = 0; prop < ZFS_NUM_USERQUOTA_PROPS; prop++) {
 650                 if (strncmp(name, zfs_userquota_prop_prefixes[prop],
 651                     strlen(zfs_userquota_prop_prefixes[prop])) == 0) {
 652                         return (B_TRUE);
 653                 }
 654         }
 655
 656         return (B_FALSE);
 657 }
 658
 659 /*
 660  * Returns true if this is a valid written@ property.
 661  * Note that after the @, any character is valid (eg, another @, for
 662  * written@pool/fs@origin).
 663  */
 664 boolean_t
 665 zfs_prop_written(const char *name)
 666 {
 667         static const char *prefix = "written@";
 668         return (strncmp(name, prefix, strlen(prefix)) == 0);
 669 }
 670
 671 /*
 672  * Tables of index types, plus functions to convert between the user view
 673  * (strings) and internal representation (uint64_t).
 674  */
 675 int
 676 zfs_prop_string_to_index(zfs_prop_t prop, const char *string, uint64_t *index)
 677 {
 678         return (zprop_string_to_index(prop, string, index, ZFS_TYPE_DATASET));
 679 }
 680
 681 int
 682 zfs_prop_index_to_string(zfs_prop_t prop, uint64_t index, const char **string)
 683 {
 684         return (zprop_index_to_string(prop, index, string, ZFS_TYPE_DATASET));
 685 }
 686
 687 uint64_t
 688 zfs_prop_random_value(zfs_prop_t prop, uint64_t seed)
 689 {
 690         return (zprop_random_value(prop, seed, ZFS_TYPE_DATASET));
 691 }
 692
 693 /*
 694  * Returns TRUE if the property applies to any of the given dataset types.
 695  */
 696 boolean_t
 697 zfs_prop_valid_for_type(int prop, zfs_type_t types, boolean_t headcheck)
 698 {
 699         return (zprop_valid_for_type(prop, types, headcheck));
 700 }
 701
 702 zprop_type_t
 703 zfs_prop_get_type(zfs_prop_t prop)
 704 {
 705         return (zfs_prop_table[prop].pd_proptype);
 706 }
 707
 708 /*
 709  * Returns TRUE if the property is readonly.
 710  */
 711 boolean_t
 712 zfs_prop_readonly(zfs_prop_t prop)
 713 {
 714         return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
 715             zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
 716             zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
 717 }
 718
 719 /*
 720  * Returns TRUE if the property is visible (not hidden).
 721  */
 722 boolean_t
 723 zfs_prop_visible(zfs_prop_t prop)
 724 {
 725         return (zfs_prop_table[prop].pd_visible);
 726 }
 727
 728 /*
 729  * Returns TRUE if the property is only allowed to be set once.
 730  */
 731 boolean_t
 732 zfs_prop_setonce(zfs_prop_t prop)
 733 {
 734         return (zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
 735             zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
 736 }
 737
 738 const char *
 739 zfs_prop_default_string(zfs_prop_t prop)
 740 {
 741         return (zfs_prop_table[prop].pd_strdefault);
 742 }
 743
 744 uint64_t
 745 zfs_prop_default_numeric(zfs_prop_t prop)
 746 {
 747         return (zfs_prop_table[prop].pd_numdefault);
 748 }
 749
 750 /*
 751  * Given a dataset property ID, returns the corresponding name.
 752  * Assuming the zfs dataset property ID is valid.
 753  */
 754 const char *
 755 zfs_prop_to_name(zfs_prop_t prop)
 756 {
 757         return (zfs_prop_table[prop].pd_name);
 758 }
 759
 760 /*
 761  * Returns TRUE if the property is inheritable.
 762  */
 763 boolean_t
 764 zfs_prop_inheritable(zfs_prop_t prop)
 765 {
 766         return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
 767             zfs_prop_table[prop].pd_attr == PROP_ONETIME);
 768 }
 769
 770 /*
 771  * Returns TRUE if property is one of the encryption properties that requires
 772  * a loaded encryption key to modify.
 773  */
 774 boolean_t
 775 zfs_prop_encryption_key_param(zfs_prop_t prop)
 776 {
 777         /*
 778          * keylocation does not count as an encryption property. It can be
 779          * changed at will without needing the master keys.
 780          */
 781         return (prop == ZFS_PROP_PBKDF2_SALT || prop == ZFS_PROP_PBKDF2_ITERS ||
 782             prop == ZFS_PROP_KEYFORMAT);
 783 }
 784
 785 /*
 786  * Helper function used by both kernelspace and userspace to check the
 787  * keylocation property. If encrypted is set, the keylocation must be valid
 788  * for an encrypted dataset.
 789  */
 790 boolean_t
 791 zfs_prop_valid_keylocation(const char *str, boolean_t encrypted)
 792 {
 793         if (strcmp("none", str) == 0)
 794                 return (!encrypted);
 795         else if (strcmp("prompt", str) == 0)
 796                 return (B_TRUE);
 797         else if (strlen(str) > 8 && strncmp("file:///", str, 8) == 0)
 798                 return (B_TRUE);
 799
 800         return (B_FALSE);
 801 }
 802
 803
 804 #ifndef _KERNEL
 805
 806 /*
 807  * Returns a string describing the set of acceptable values for the given
 808  * zfs property, or NULL if it cannot be set.
 809  */
 810 const char *
 811 zfs_prop_values(zfs_prop_t prop)
 812 {
 813         return (zfs_prop_table[prop].pd_values);
 814 }
 815
 816 /*
 817  * Returns TRUE if this property is a string type.  Note that index types
 818  * (compression, checksum) are treated as strings in userland, even though they
 819  * are stored numerically on disk.
 820  */
 821 int
 822 zfs_prop_is_string(zfs_prop_t prop)
 823 {
 824         return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
 825             zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
 826 }
 827
 828 /*
 829  * Returns the column header for the given property.  Used only in
 830  * 'zfs list -o', but centralized here with the other property information.
 831  */
 832 const char *
 833 zfs_prop_column_name(zfs_prop_t prop)
 834 {
 835         return (zfs_prop_table[prop].pd_colname);
 836 }
 837
 838 /*
 839  * Returns whether the given property should be displayed right-justified for
 840  * 'zfs list'.
 841  */
 842 boolean_t
 843 zfs_prop_align_right(zfs_prop_t prop)
 844 {
 845         return (zfs_prop_table[prop].pd_rightalign);
 846 }
 847
 848 #endif
 849
 850 #if defined(_KERNEL) && defined(HAVE_SPL)
 851 static int __init
 852 zcommon_init(void)
 853 {
 854         fletcher_4_init();
 855         return (0);
 856 }
 857
 858 static void __exit
 859 zcommon_fini(void)
 860 {
 861         fletcher_4_fini();
 862 }
 863
 864 module_init(zcommon_init);
 865 module_exit(zcommon_fini);
 866
 867 MODULE_DESCRIPTION("Generic ZFS support");
 868 MODULE_AUTHOR(ZFS_META_AUTHOR);
 869 MODULE_LICENSE(ZFS_META_LICENSE);
 870 MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
 871
 872 /* zfs dataset property functions */
 873 EXPORT_SYMBOL(zfs_userquota_prop_prefixes);
 874 EXPORT_SYMBOL(zfs_prop_init);
 875 EXPORT_SYMBOL(zfs_prop_get_type);
 876 EXPORT_SYMBOL(zfs_prop_get_table);
 877 EXPORT_SYMBOL(zfs_prop_delegatable);
 878 EXPORT_SYMBOL(zfs_prop_visible);
 879
 880 /* Dataset property functions shared between libzfs and kernel. */
 881 EXPORT_SYMBOL(zfs_prop_default_string);
 882 EXPORT_SYMBOL(zfs_prop_default_numeric);
 883 EXPORT_SYMBOL(zfs_prop_readonly);
 884 EXPORT_SYMBOL(zfs_prop_inheritable);
 885 EXPORT_SYMBOL(zfs_prop_encryption_key_param);
 886 EXPORT_SYMBOL(zfs_prop_valid_keylocation);
 887 EXPORT_SYMBOL(zfs_prop_setonce);
 888 EXPORT_SYMBOL(zfs_prop_to_name);
 889 EXPORT_SYMBOL(zfs_name_to_prop);
 890 EXPORT_SYMBOL(zfs_prop_user);
 891 EXPORT_SYMBOL(zfs_prop_userquota);
 892 EXPORT_SYMBOL(zfs_prop_index_to_string);
 893 EXPORT_SYMBOL(zfs_prop_string_to_index);
 894 EXPORT_SYMBOL(zfs_prop_valid_for_type);
 895 EXPORT_SYMBOL(zfs_prop_written);
 896
 897 #endif