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) 2012 by Delphix. All rights reserved.
  24  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  25  */
  26
  27 /* Portions Copyright 2010 Robert Milkowski */
  28
  29 #include <sys/zio.h>
  30 #include <sys/spa.h>
  31 #include <sys/u8_textprep.h>
  32 #include <sys/zfs_acl.h>
  33 #include <sys/zfs_ioctl.h>
  34 #include <sys/zfs_znode.h>
  35
  36 #include "zfs_prop.h"
  37 #include "zfs_deleg.h"
  38
  39 #if defined(_KERNEL)
  40 #include <sys/systm.h>
  41 #else
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <ctype.h>
  45 #endif
  46
  47 static zprop_desc_t zfs_prop_table[ZFS_NUM_PROPS];
  48
  49 /* Note this is indexed by zfs_userquota_prop_t, keep the order the same */
  50 const char *zfs_userquota_prop_prefixes[] = {
  51         "userused@",
  52         "userquota@",
  53         "groupused@",
  54         "groupquota@"
  55 };
  56
  57 zprop_desc_t *
  58 zfs_prop_get_table(void)
  59 {
  60         return (zfs_prop_table);
  61 }
  62
  63 void
  64 zfs_prop_init(void)
  65 {
  66         static zprop_index_t checksum_table[] = {
  67                 { "on",         ZIO_CHECKSUM_ON },
  68                 { "off",        ZIO_CHECKSUM_OFF },
  69                 { "fletcher2",  ZIO_CHECKSUM_FLETCHER_2 },
  70                 { "fletcher4",  ZIO_CHECKSUM_FLETCHER_4 },
  71                 { "sha256",     ZIO_CHECKSUM_SHA256 },
  72                 { NULL }
  73         };
  74
  75         static zprop_index_t dedup_table[] = {
  76                 { "on",         ZIO_CHECKSUM_ON },
  77                 { "off",        ZIO_CHECKSUM_OFF },
  78                 { "verify",     ZIO_CHECKSUM_ON | ZIO_CHECKSUM_VERIFY },
  79                 { "sha256",     ZIO_CHECKSUM_SHA256 },
  80                 { "sha256,verify",
  81                                 ZIO_CHECKSUM_SHA256 | ZIO_CHECKSUM_VERIFY },
  82                 { NULL }
  83         };
  84
  85         static zprop_index_t compress_table[] = {
  86                 { "on",         ZIO_COMPRESS_ON },
  87                 { "off",        ZIO_COMPRESS_OFF },
  88                 { "lzjb",       ZIO_COMPRESS_LZJB },
  89                 { "gzip",       ZIO_COMPRESS_GZIP_6 },  /* gzip default */
  90                 { "gzip-1",     ZIO_COMPRESS_GZIP_1 },
  91                 { "gzip-2",     ZIO_COMPRESS_GZIP_2 },
  92                 { "gzip-3",     ZIO_COMPRESS_GZIP_3 },
  93                 { "gzip-4",     ZIO_COMPRESS_GZIP_4 },
  94                 { "gzip-5",     ZIO_COMPRESS_GZIP_5 },
  95                 { "gzip-6",     ZIO_COMPRESS_GZIP_6 },
  96                 { "gzip-7",     ZIO_COMPRESS_GZIP_7 },
  97                 { "gzip-8",     ZIO_COMPRESS_GZIP_8 },
  98                 { "gzip-9",     ZIO_COMPRESS_GZIP_9 },
  99                 { "zle",        ZIO_COMPRESS_ZLE },
 100                 { "lz4",        ZIO_COMPRESS_LZ4 },
 101                 { NULL }
 102         };
 103
 104         static zprop_index_t snapdir_table[] = {
 105                 { "hidden",     ZFS_SNAPDIR_HIDDEN },
 106                 { "visible",    ZFS_SNAPDIR_VISIBLE },
 107                 { NULL }
 108         };
 109
 110         static zprop_index_t snapdev_table[] = {
 111                 { "hidden",     ZFS_SNAPDEV_HIDDEN },
 112                 { "visible",    ZFS_SNAPDEV_VISIBLE },
 113                 { NULL }
 114         };
 115
 116         static zprop_index_t acltype_table[] = {
 117                 { "off",        ZFS_ACLTYPE_OFF },
 118                 { "disabled",   ZFS_ACLTYPE_OFF },
 119                 { "noacl",      ZFS_ACLTYPE_OFF },
 120                 { "posixacl",   ZFS_ACLTYPE_POSIXACL },
 121                 { NULL }
 122         };
 123
 124         static zprop_index_t acl_inherit_table[] = {
 125                 { "discard",    ZFS_ACL_DISCARD },
 126                 { "noallow",    ZFS_ACL_NOALLOW },
 127                 { "restricted", ZFS_ACL_RESTRICTED },
 128                 { "passthrough", ZFS_ACL_PASSTHROUGH },
 129                 { "secure",     ZFS_ACL_RESTRICTED }, /* bkwrd compatability */
 130                 { "passthrough-x", ZFS_ACL_PASSTHROUGH_X },
 131                 { NULL }
 132         };
 133
 134         static zprop_index_t case_table[] = {
 135                 { "sensitive",          ZFS_CASE_SENSITIVE },
 136                 { "insensitive",        ZFS_CASE_INSENSITIVE },
 137                 { "mixed",              ZFS_CASE_MIXED },
 138                 { NULL }
 139         };
 140
 141         static zprop_index_t copies_table[] = {
 142                 { "1",          1 },
 143                 { "2",          2 },
 144                 { "3",          3 },
 145                 { NULL }
 146         };
 147
 148         /*
 149          * Use the unique flags we have to send to u8_strcmp() and/or
 150          * u8_textprep() to represent the various normalization property
 151          * values.
 152          */
 153         static zprop_index_t normalize_table[] = {
 154                 { "none",       0 },
 155                 { "formD",      U8_TEXTPREP_NFD },
 156                 { "formKC",     U8_TEXTPREP_NFKC },
 157                 { "formC",      U8_TEXTPREP_NFC },
 158                 { "formKD",     U8_TEXTPREP_NFKD },
 159                 { NULL }
 160         };
 161
 162         static zprop_index_t version_table[] = {
 163                 { "1",          1 },
 164                 { "2",          2 },
 165                 { "3",          3 },
 166                 { "4",          4 },
 167                 { "5",          5 },
 168                 { "current",    ZPL_VERSION },
 169                 { NULL }
 170         };
 171
 172         static zprop_index_t boolean_table[] = {
 173                 { "off",        0 },
 174                 { "on",         1 },
 175                 { NULL }
 176         };
 177
 178         static zprop_index_t logbias_table[] = {
 179                 { "latency",    ZFS_LOGBIAS_LATENCY },
 180                 { "throughput", ZFS_LOGBIAS_THROUGHPUT },
 181                 { NULL }
 182         };
 183
 184         static zprop_index_t canmount_table[] = {
 185                 { "off",        ZFS_CANMOUNT_OFF },
 186                 { "on",         ZFS_CANMOUNT_ON },
 187                 { "noauto",     ZFS_CANMOUNT_NOAUTO },
 188                 { NULL }
 189         };
 190
 191         static zprop_index_t cache_table[] = {
 192                 { "none",       ZFS_CACHE_NONE },
 193                 { "metadata",   ZFS_CACHE_METADATA },
 194                 { "all",        ZFS_CACHE_ALL },
 195                 { NULL }
 196         };
 197
 198         static zprop_index_t sync_table[] = {
 199                 { "standard",   ZFS_SYNC_STANDARD },
 200                 { "always",     ZFS_SYNC_ALWAYS },
 201                 { "disabled",   ZFS_SYNC_DISABLED },
 202                 { NULL }
 203         };
 204
 205         static zprop_index_t xattr_table[] = {
 206                 { "off",        ZFS_XATTR_OFF },
 207                 { "on",         ZFS_XATTR_DIR },
 208                 { "sa",         ZFS_XATTR_SA },
 209                 { "dir",        ZFS_XATTR_DIR },
 210                 { NULL }
 211         };
 212
 213         /* inherit index properties */
 214         zprop_register_index(ZFS_PROP_SYNC, "sync", ZFS_SYNC_STANDARD,
 215             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 216             "standard | always | disabled", "SYNC",
 217             sync_table);
 218         zprop_register_index(ZFS_PROP_CHECKSUM, "checksum",
 219             ZIO_CHECKSUM_DEFAULT, PROP_INHERIT, ZFS_TYPE_FILESYSTEM |
 220             ZFS_TYPE_VOLUME,
 221             "on | off | fletcher2 | fletcher4 | sha256", "CHECKSUM",
 222             checksum_table);
 223         zprop_register_index(ZFS_PROP_DEDUP, "dedup", ZIO_CHECKSUM_OFF,
 224             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 225             "on | off | verify | sha256[,verify]", "DEDUP",
 226             dedup_table);
 227         zprop_register_index(ZFS_PROP_COMPRESSION, "compression",
 228             ZIO_COMPRESS_DEFAULT, PROP_INHERIT,
 229             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 230             "on | off | lzjb | gzip | gzip-[1-9] | zle | lz4", "COMPRESS",
 231             compress_table);
 232         zprop_register_index(ZFS_PROP_SNAPDIR, "snapdir", ZFS_SNAPDIR_HIDDEN,
 233             PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 234             "hidden | visible", "SNAPDIR", snapdir_table);
 235         zprop_register_index(ZFS_PROP_SNAPDEV, "snapdev", ZFS_SNAPDEV_HIDDEN,
 236             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 237             "hidden | visible", "SNAPDEV", snapdev_table);
 238         zprop_register_index(ZFS_PROP_ACLTYPE, "acltype", ZFS_ACLTYPE_OFF,
 239             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 240             "noacl | posixacl", "ACLTYPE", acltype_table);
 241         zprop_register_index(ZFS_PROP_ACLINHERIT, "aclinherit",
 242             ZFS_ACL_RESTRICTED, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 243             "discard | noallow | restricted | passthrough | passthrough-x",
 244             "ACLINHERIT", acl_inherit_table);
 245         zprop_register_index(ZFS_PROP_COPIES, "copies", 1, PROP_INHERIT,
 246             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 247             "1 | 2 | 3", "COPIES", copies_table);
 248         zprop_register_index(ZFS_PROP_PRIMARYCACHE, "primarycache",
 249             ZFS_CACHE_ALL, PROP_INHERIT,
 250             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
 251             "all | none | metadata", "PRIMARYCACHE", cache_table);
 252         zprop_register_index(ZFS_PROP_SECONDARYCACHE, "secondarycache",
 253             ZFS_CACHE_ALL, PROP_INHERIT,
 254             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
 255             "all | none | metadata", "SECONDARYCACHE", cache_table);
 256         zprop_register_index(ZFS_PROP_LOGBIAS, "logbias", ZFS_LOGBIAS_LATENCY,
 257             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 258             "latency | throughput", "LOGBIAS", logbias_table);
 259         zprop_register_index(ZFS_PROP_XATTR, "xattr", ZFS_XATTR_DIR,
 260             PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 261             "on | off | dir | sa", "XATTR", xattr_table);
 262
 263         /* inherit index (boolean) properties */
 264         zprop_register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
 265             ZFS_TYPE_FILESYSTEM, "on | off", "ATIME", boolean_table);
 266         zprop_register_index(ZFS_PROP_RELATIME, "relatime", 0, PROP_INHERIT,
 267             ZFS_TYPE_FILESYSTEM, "on | off", "RELATIME", boolean_table);
 268         zprop_register_index(ZFS_PROP_DEVICES, "devices", 1, PROP_INHERIT,
 269             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "DEVICES",
 270             boolean_table);
 271         zprop_register_index(ZFS_PROP_EXEC, "exec", 1, PROP_INHERIT,
 272             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "EXEC",
 273             boolean_table);
 274         zprop_register_index(ZFS_PROP_SETUID, "setuid", 1, PROP_INHERIT,
 275             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "SETUID",
 276             boolean_table);
 277         zprop_register_index(ZFS_PROP_READONLY, "readonly", 0, PROP_INHERIT,
 278             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "on | off", "RDONLY",
 279             boolean_table);
 280         zprop_register_index(ZFS_PROP_ZONED, "zoned", 0, PROP_INHERIT,
 281             ZFS_TYPE_FILESYSTEM, "on | off", "ZONED", boolean_table);
 282         zprop_register_index(ZFS_PROP_VSCAN, "vscan", 0, PROP_INHERIT,
 283             ZFS_TYPE_FILESYSTEM, "on | off", "VSCAN", boolean_table);
 284         zprop_register_index(ZFS_PROP_NBMAND, "nbmand", 0, PROP_INHERIT,
 285             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "NBMAND",
 286             boolean_table);
 287
 288         /* default index properties */
 289         zprop_register_index(ZFS_PROP_VERSION, "version", 0, PROP_DEFAULT,
 290             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 291             "1 | 2 | 3 | 4 | 5 | current", "VERSION", version_table);
 292         zprop_register_index(ZFS_PROP_CANMOUNT, "canmount", ZFS_CANMOUNT_ON,
 293             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM, "on | off | noauto",
 294             "CANMOUNT", canmount_table);
 295
 296         /* readonly index (boolean) properties */
 297         zprop_register_index(ZFS_PROP_MOUNTED, "mounted", 0, PROP_READONLY,
 298             ZFS_TYPE_FILESYSTEM, "yes | no", "MOUNTED", boolean_table);
 299         zprop_register_index(ZFS_PROP_DEFER_DESTROY, "defer_destroy", 0,
 300             PROP_READONLY, ZFS_TYPE_SNAPSHOT, "yes | no", "DEFER_DESTROY",
 301             boolean_table);
 302
 303         /* set once index properties */
 304         zprop_register_index(ZFS_PROP_NORMALIZE, "normalization", 0,
 305             PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 306             "none | formC | formD | formKC | formKD", "NORMALIZATION",
 307             normalize_table);
 308         zprop_register_index(ZFS_PROP_CASE, "casesensitivity",
 309             ZFS_CASE_SENSITIVE, PROP_ONETIME, ZFS_TYPE_FILESYSTEM |
 310             ZFS_TYPE_SNAPSHOT,
 311             "sensitive | insensitive | mixed", "CASE", case_table);
 312
 313         /* set once index (boolean) properties */
 314         zprop_register_index(ZFS_PROP_UTF8ONLY, "utf8only", 0, PROP_ONETIME,
 315             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
 316             "on | off", "UTF8ONLY", boolean_table);
 317
 318         /* string properties */
 319         zprop_register_string(ZFS_PROP_ORIGIN, "origin", NULL, PROP_READONLY,
 320             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<snapshot>", "ORIGIN");
 321         zprop_register_string(ZFS_PROP_CLONES, "clones", NULL, PROP_READONLY,
 322             ZFS_TYPE_SNAPSHOT, "<dataset>[,...]", "CLONES");
 323         zprop_register_string(ZFS_PROP_MOUNTPOINT, "mountpoint", "/",
 324             PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "<path> | legacy | none",
 325             "MOUNTPOINT");
 326         zprop_register_string(ZFS_PROP_SHARENFS, "sharenfs", "off",
 327             PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "on | off | share(1M) options",
 328             "SHARENFS");
 329         zprop_register_string(ZFS_PROP_TYPE, "type", NULL, PROP_READONLY,
 330             ZFS_TYPE_DATASET, "filesystem | volume | snapshot", "TYPE");
 331         zprop_register_string(ZFS_PROP_SHARESMB, "sharesmb", "off",
 332             PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
 333             "on | off | sharemgr(1M) options", "SHARESMB");
 334         zprop_register_string(ZFS_PROP_MLSLABEL, "mlslabel",
 335             ZFS_MLSLABEL_DEFAULT, PROP_INHERIT, ZFS_TYPE_DATASET,
 336             "<sensitivity label>", "MLSLABEL");
 337         zprop_register_string(ZFS_PROP_SELINUX_CONTEXT, "context",
 338             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux context>",
 339             "CONTEXT");
 340         zprop_register_string(ZFS_PROP_SELINUX_FSCONTEXT, "fscontext",
 341             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux fscontext>",
 342             "FSCONTEXT");
 343         zprop_register_string(ZFS_PROP_SELINUX_DEFCONTEXT, "defcontext",
 344             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux defcontext>",
 345             "DEFCONTEXT");
 346         zprop_register_string(ZFS_PROP_SELINUX_ROOTCONTEXT, "rootcontext",
 347             "none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux rootcontext>",
 348             "ROOTCONTEXT");
 349
 350         /* readonly number properties */
 351         zprop_register_number(ZFS_PROP_USED, "used", 0, PROP_READONLY,
 352             ZFS_TYPE_DATASET, "<size>", "USED");
 353         zprop_register_number(ZFS_PROP_AVAILABLE, "available", 0, PROP_READONLY,
 354             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "AVAIL");
 355         zprop_register_number(ZFS_PROP_REFERENCED, "referenced", 0,
 356             PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "REFER");
 357         zprop_register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0,
 358             PROP_READONLY, ZFS_TYPE_DATASET,
 359             "<1.00x or higher if compressed>", "RATIO");
 360         zprop_register_number(ZFS_PROP_REFRATIO, "refcompressratio", 0,
 361             PROP_READONLY, ZFS_TYPE_DATASET,
 362             "<1.00x or higher if compressed>", "REFRATIO");
 363         zprop_register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize",
 364             ZVOL_DEFAULT_BLOCKSIZE, PROP_ONETIME,
 365             ZFS_TYPE_VOLUME, "512 to 128k, power of 2", "VOLBLOCK");
 366         zprop_register_number(ZFS_PROP_USEDSNAP, "usedbysnapshots", 0,
 367             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 368             "USEDSNAP");
 369         zprop_register_number(ZFS_PROP_USEDDS, "usedbydataset", 0,
 370             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 371             "USEDDS");
 372         zprop_register_number(ZFS_PROP_USEDCHILD, "usedbychildren", 0,
 373             PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
 374             "USEDCHILD");
 375         zprop_register_number(ZFS_PROP_USEDREFRESERV, "usedbyrefreservation", 0,
 376             PROP_READONLY,
 377             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDREFRESERV");
 378         zprop_register_number(ZFS_PROP_USERREFS, "userrefs", 0, PROP_READONLY,
 379             ZFS_TYPE_SNAPSHOT, "<count>", "USERREFS");
 380         zprop_register_number(ZFS_PROP_WRITTEN, "written", 0, PROP_READONLY,
 381             ZFS_TYPE_DATASET, "<size>", "WRITTEN");
 382         zprop_register_number(ZFS_PROP_LOGICALUSED, "logicalused", 0,
 383             PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "LUSED");
 384         zprop_register_number(ZFS_PROP_LOGICALREFERENCED, "logicalreferenced",
 385             0, PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "LREFER");
 386
 387         /* default number properties */
 388         zprop_register_number(ZFS_PROP_QUOTA, "quota", 0, PROP_DEFAULT,
 389             ZFS_TYPE_FILESYSTEM, "<size> | none", "QUOTA");
 390         zprop_register_number(ZFS_PROP_RESERVATION, "reservation", 0,
 391             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 392             "<size> | none", "RESERV");
 393         zprop_register_number(ZFS_PROP_VOLSIZE, "volsize", 0, PROP_DEFAULT,
 394             ZFS_TYPE_VOLUME, "<size>", "VOLSIZE");
 395         zprop_register_number(ZFS_PROP_REFQUOTA, "refquota", 0, PROP_DEFAULT,
 396             ZFS_TYPE_FILESYSTEM, "<size> | none", "REFQUOTA");
 397         zprop_register_number(ZFS_PROP_REFRESERVATION, "refreservation", 0,
 398             PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
 399             "<size> | none", "REFRESERV");
 400
 401         /* inherit number properties */
 402         zprop_register_number(ZFS_PROP_RECORDSIZE, "recordsize",
 403             SPA_MAXBLOCKSIZE, PROP_INHERIT,
 404             ZFS_TYPE_FILESYSTEM, "512 to 128k, power of 2", "RECSIZE");
 405
 406         /* hidden properties */
 407         zprop_register_hidden(ZFS_PROP_CREATETXG, "createtxg", PROP_TYPE_NUMBER,
 408             PROP_READONLY, ZFS_TYPE_DATASET, "CREATETXG");
 409         zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,
 410             PROP_READONLY, ZFS_TYPE_SNAPSHOT, "NUMCLONES");
 411         zprop_register_hidden(ZFS_PROP_NAME, "name", PROP_TYPE_STRING,
 412             PROP_READONLY, ZFS_TYPE_DATASET, "NAME");
 413         zprop_register_hidden(ZFS_PROP_ISCSIOPTIONS, "iscsioptions",
 414             PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME, "ISCSIOPTIONS");
 415         zprop_register_hidden(ZFS_PROP_STMF_SHAREINFO, "stmf_sbd_lu",
 416             PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME,
 417             "STMF_SBD_LU");
 418         zprop_register_hidden(ZFS_PROP_GUID, "guid", PROP_TYPE_NUMBER,
 419             PROP_READONLY, ZFS_TYPE_DATASET, "GUID");
 420         zprop_register_hidden(ZFS_PROP_USERACCOUNTING, "useraccounting",
 421             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET,
 422             "USERACCOUNTING");
 423         zprop_register_hidden(ZFS_PROP_UNIQUE, "unique", PROP_TYPE_NUMBER,
 424             PROP_READONLY, ZFS_TYPE_DATASET, "UNIQUE");
 425         zprop_register_hidden(ZFS_PROP_OBJSETID, "objsetid", PROP_TYPE_NUMBER,
 426             PROP_READONLY, ZFS_TYPE_DATASET, "OBJSETID");
 427         zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent",
 428             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT");
 429
 430         /*
 431          * Property to be removed once libbe is integrated
 432          */
 433         zprop_register_hidden(ZFS_PROP_PRIVATE, "priv_prop",
 434             PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
 435             "PRIV_PROP");
 436
 437         /* oddball properties */
 438         zprop_register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0,
 439             NULL, PROP_READONLY, ZFS_TYPE_DATASET,
 440             "<date>", "CREATION", B_FALSE, B_TRUE, NULL);
 441 }
 442
 443 boolean_t
 444 zfs_prop_delegatable(zfs_prop_t prop)
 445 {
 446         zprop_desc_t *pd = &zfs_prop_table[prop];
 447
 448         /* The mlslabel property is never delegatable. */
 449         if (prop == ZFS_PROP_MLSLABEL)
 450                 return (B_FALSE);
 451
 452         return (pd->pd_attr != PROP_READONLY);
 453 }
 454
 455 /*
 456  * Given a zfs dataset property name, returns the corresponding property ID.
 457  */
 458 zfs_prop_t
 459 zfs_name_to_prop(const char *propname)
 460 {
 461         return (zprop_name_to_prop(propname, ZFS_TYPE_DATASET));
 462 }
 463
 464 /*
 465  * For user property names, we allow all lowercase alphanumeric characters, plus
 466  * a few useful punctuation characters.
 467  */
 468 static int
 469 valid_char(char c)
 470 {
 471         return ((c >= 'a' && c <= 'z') ||
 472             (c >= '0' && c <= '9') ||
 473             c == '-' || c == '_' || c == '.' || c == ':');
 474 }
 475
 476 /*
 477  * Returns true if this is a valid user-defined property (one with a ':').
 478  */
 479 boolean_t
 480 zfs_prop_user(const char *name)
 481 {
 482         int i;
 483         char c;
 484         boolean_t foundsep = B_FALSE;
 485
 486         for (i = 0; i < strlen(name); i++) {
 487                 c = name[i];
 488                 if (!valid_char(c))
 489                         return (B_FALSE);
 490                 if (c == ':')
 491                         foundsep = B_TRUE;
 492         }
 493
 494         if (!foundsep)
 495                 return (B_FALSE);
 496
 497         return (B_TRUE);
 498 }
 499
 500 /*
 501  * Returns true if this is a valid userspace-type property (one with a '@').
 502  * Note that after the @, any character is valid (eg, another @, for SID
 503  * user@domain).
 504  */
 505 boolean_t
 506 zfs_prop_userquota(const char *name)
 507 {
 508         zfs_userquota_prop_t prop;
 509
 510         for (prop = 0; prop < ZFS_NUM_USERQUOTA_PROPS; prop++) {
 511                 if (strncmp(name, zfs_userquota_prop_prefixes[prop],
 512                     strlen(zfs_userquota_prop_prefixes[prop])) == 0) {
 513                         return (B_TRUE);
 514                 }
 515         }
 516
 517         return (B_FALSE);
 518 }
 519
 520 /*
 521  * Returns true if this is a valid written@ property.
 522  * Note that after the @, any character is valid (eg, another @, for
 523  * written@pool/fs@origin).
 524  */
 525 boolean_t
 526 zfs_prop_written(const char *name)
 527 {
 528         static const char *prefix = "written@";
 529         return (strncmp(name, prefix, strlen(prefix)) == 0);
 530 }
 531
 532 /*
 533  * Tables of index types, plus functions to convert between the user view
 534  * (strings) and internal representation (uint64_t).
 535  */
 536 int
 537 zfs_prop_string_to_index(zfs_prop_t prop, const char *string, uint64_t *index)
 538 {
 539         return (zprop_string_to_index(prop, string, index, ZFS_TYPE_DATASET));
 540 }
 541
 542 int
 543 zfs_prop_index_to_string(zfs_prop_t prop, uint64_t index, const char **string)
 544 {
 545         return (zprop_index_to_string(prop, index, string, ZFS_TYPE_DATASET));
 546 }
 547
 548 uint64_t
 549 zfs_prop_random_value(zfs_prop_t prop, uint64_t seed)
 550 {
 551         return (zprop_random_value(prop, seed, ZFS_TYPE_DATASET));
 552 }
 553
 554 /*
 555  * Returns TRUE if the property applies to any of the given dataset types.
 556  */
 557 boolean_t
 558 zfs_prop_valid_for_type(int prop, zfs_type_t types)
 559 {
 560         return (zprop_valid_for_type(prop, types));
 561 }
 562
 563 zprop_type_t
 564 zfs_prop_get_type(zfs_prop_t prop)
 565 {
 566         return (zfs_prop_table[prop].pd_proptype);
 567 }
 568
 569 /*
 570  * Returns TRUE if the property is readonly.
 571  */
 572 boolean_t
 573 zfs_prop_readonly(zfs_prop_t prop)
 574 {
 575         return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
 576             zfs_prop_table[prop].pd_attr == PROP_ONETIME);
 577 }
 578
 579 /*
 580  * Returns TRUE if the property is only allowed to be set once.
 581  */
 582 boolean_t
 583 zfs_prop_setonce(zfs_prop_t prop)
 584 {
 585         return (zfs_prop_table[prop].pd_attr == PROP_ONETIME);
 586 }
 587
 588 const char *
 589 zfs_prop_default_string(zfs_prop_t prop)
 590 {
 591         return (zfs_prop_table[prop].pd_strdefault);
 592 }
 593
 594 uint64_t
 595 zfs_prop_default_numeric(zfs_prop_t prop)
 596 {
 597         return (zfs_prop_table[prop].pd_numdefault);
 598 }
 599
 600 /*
 601  * Given a dataset property ID, returns the corresponding name.
 602  * Assuming the zfs dataset property ID is valid.
 603  */
 604 const char *
 605 zfs_prop_to_name(zfs_prop_t prop)
 606 {
 607         return (zfs_prop_table[prop].pd_name);
 608 }
 609
 610 /*
 611  * Returns TRUE if the property is inheritable.
 612  */
 613 boolean_t
 614 zfs_prop_inheritable(zfs_prop_t prop)
 615 {
 616         return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
 617             zfs_prop_table[prop].pd_attr == PROP_ONETIME);
 618 }
 619
 620 #ifndef _KERNEL
 621
 622 /*
 623  * Returns a string describing the set of acceptable values for the given
 624  * zfs property, or NULL if it cannot be set.
 625  */
 626 const char *
 627 zfs_prop_values(zfs_prop_t prop)
 628 {
 629         return (zfs_prop_table[prop].pd_values);
 630 }
 631
 632 /*
 633  * Returns TRUE if this property is a string type.  Note that index types
 634  * (compression, checksum) are treated as strings in userland, even though they
 635  * are stored numerically on disk.
 636  */
 637 int
 638 zfs_prop_is_string(zfs_prop_t prop)
 639 {
 640         return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
 641             zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
 642 }
 643
 644 /*
 645  * Returns the column header for the given property.  Used only in
 646  * 'zfs list -o', but centralized here with the other property information.
 647  */
 648 const char *
 649 zfs_prop_column_name(zfs_prop_t prop)
 650 {
 651         return (zfs_prop_table[prop].pd_colname);
 652 }
 653
 654 /*
 655  * Returns whether the given property should be displayed right-justified for
 656  * 'zfs list'.
 657  */
 658 boolean_t
 659 zfs_prop_align_right(zfs_prop_t prop)
 660 {
 661         return (zfs_prop_table[prop].pd_rightalign);
 662 }
 663
 664 #endif
 665
 666 #if defined(_KERNEL) && defined(HAVE_SPL)
 667
 668 static int zcommon_init(void) { return 0; }
 669 static int zcommon_fini(void) { return 0; }
 670
 671 spl_module_init(zcommon_init);
 672 spl_module_exit(zcommon_fini);
 673
 674 MODULE_DESCRIPTION("Generic ZFS support");
 675 MODULE_AUTHOR(ZFS_META_AUTHOR);
 676 MODULE_LICENSE(ZFS_META_LICENSE);
 677 MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
 678
 679 /* zfs dataset property functions */
 680 EXPORT_SYMBOL(zfs_userquota_prop_prefixes);
 681 EXPORT_SYMBOL(zfs_prop_init);
 682 EXPORT_SYMBOL(zfs_prop_get_type);
 683 EXPORT_SYMBOL(zfs_prop_get_table);
 684 EXPORT_SYMBOL(zfs_prop_delegatable);
 685
 686 /* Dataset property functions shared between libzfs and kernel. */
 687 EXPORT_SYMBOL(zfs_prop_default_string);
 688 EXPORT_SYMBOL(zfs_prop_default_numeric);
 689 EXPORT_SYMBOL(zfs_prop_readonly);
 690 EXPORT_SYMBOL(zfs_prop_inheritable);
 691 EXPORT_SYMBOL(zfs_prop_setonce);
 692 EXPORT_SYMBOL(zfs_prop_to_name);
 693 EXPORT_SYMBOL(zfs_name_to_prop);
 694 EXPORT_SYMBOL(zfs_prop_user);
 695 EXPORT_SYMBOL(zfs_prop_userquota);
 696 EXPORT_SYMBOL(zfs_prop_index_to_string);
 697 EXPORT_SYMBOL(zfs_prop_string_to_index);
 698 EXPORT_SYMBOL(zfs_prop_valid_for_type);
 699
 700 #endif