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      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 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #include <sys/zio.h>
     27 #include <sys/spa.h>
     28 #include <sys/u8_textprep.h>
     29 #include <sys/zfs_acl.h>
     30 #include <sys/zfs_ioctl.h>
     31 #include <sys/zfs_znode.h>
     32 
     33 #include "zfs_prop.h"
     34 #include "zfs_deleg.h"
     35 
     36 #if defined(_KERNEL)
     37 #include <sys/systm.h>
     38 #else
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #include <ctype.h>
     42 #endif
     43 
     44 static zprop_desc_t zfs_prop_table[ZFS_NUM_PROPS];
     45 
     46 zprop_desc_t *
     47 zfs_prop_get_table(void)
     48 {
     49 	return (zfs_prop_table);
     50 }
     51 
     52 void
     53 zfs_prop_init(void)
     54 {
     55 	static zprop_index_t checksum_table[] = {
     56 		{ "on",		ZIO_CHECKSUM_ON },
     57 		{ "off",	ZIO_CHECKSUM_OFF },
     58 		{ "fletcher2",	ZIO_CHECKSUM_FLETCHER_2 },
     59 		{ "fletcher4",	ZIO_CHECKSUM_FLETCHER_4 },
     60 		{ "sha256",	ZIO_CHECKSUM_SHA256 },
     61 		{ NULL }
     62 	};
     63 
     64 	static zprop_index_t compress_table[] = {
     65 		{ "on",		ZIO_COMPRESS_ON },
     66 		{ "off",	ZIO_COMPRESS_OFF },
     67 		{ "lzjb",	ZIO_COMPRESS_LZJB },
     68 		{ "gzip",	ZIO_COMPRESS_GZIP_6 },	/* gzip default */
     69 		{ "gzip-1",	ZIO_COMPRESS_GZIP_1 },
     70 		{ "gzip-2",	ZIO_COMPRESS_GZIP_2 },
     71 		{ "gzip-3",	ZIO_COMPRESS_GZIP_3 },
     72 		{ "gzip-4",	ZIO_COMPRESS_GZIP_4 },
     73 		{ "gzip-5",	ZIO_COMPRESS_GZIP_5 },
     74 		{ "gzip-6",	ZIO_COMPRESS_GZIP_6 },
     75 		{ "gzip-7",	ZIO_COMPRESS_GZIP_7 },
     76 		{ "gzip-8",	ZIO_COMPRESS_GZIP_8 },
     77 		{ "gzip-9",	ZIO_COMPRESS_GZIP_9 },
     78 		{ NULL }
     79 	};
     80 
     81 	static zprop_index_t snapdir_table[] = {
     82 		{ "hidden",	ZFS_SNAPDIR_HIDDEN },
     83 		{ "visible",	ZFS_SNAPDIR_VISIBLE },
     84 		{ NULL }
     85 	};
     86 
     87 	static zprop_index_t acl_mode_table[] = {
     88 		{ "discard",	ZFS_ACL_DISCARD },
     89 		{ "groupmask",	ZFS_ACL_GROUPMASK },
     90 		{ "passthrough", ZFS_ACL_PASSTHROUGH },
     91 		{ NULL }
     92 	};
     93 
     94 	static zprop_index_t acl_inherit_table[] = {
     95 		{ "discard",	ZFS_ACL_DISCARD },
     96 		{ "noallow",	ZFS_ACL_NOALLOW },
     97 		{ "restricted",	ZFS_ACL_RESTRICTED },
     98 		{ "passthrough", ZFS_ACL_PASSTHROUGH },
     99 		{ "secure",	ZFS_ACL_RESTRICTED }, /* bkwrd compatability */
    100 		{ NULL }
    101 	};
    102 
    103 	static zprop_index_t case_table[] = {
    104 		{ "sensitive",		ZFS_CASE_SENSITIVE },
    105 		{ "insensitive",	ZFS_CASE_INSENSITIVE },
    106 		{ "mixed",		ZFS_CASE_MIXED },
    107 		{ NULL }
    108 	};
    109 
    110 	static zprop_index_t copies_table[] = {
    111 		{ "1",		1 },
    112 		{ "2",		2 },
    113 		{ "3",		3 },
    114 		{ NULL }
    115 	};
    116 
    117 	/*
    118 	 * Use the unique flags we have to send to u8_strcmp() and/or
    119 	 * u8_textprep() to represent the various normalization property
    120 	 * values.
    121 	 */
    122 	static zprop_index_t normalize_table[] = {
    123 		{ "none",	0 },
    124 		{ "formD",	U8_TEXTPREP_NFD },
    125 		{ "formKC",	U8_TEXTPREP_NFKC },
    126 		{ "formC",	U8_TEXTPREP_NFC },
    127 		{ "formKD",	U8_TEXTPREP_NFKD },
    128 		{ NULL }
    129 	};
    130 
    131 	static zprop_index_t version_table[] = {
    132 		{ "1",		1 },
    133 		{ "2",		2 },
    134 		{ "3",		3 },
    135 		{ "current",	ZPL_VERSION },
    136 		{ NULL }
    137 	};
    138 
    139 	static zprop_index_t boolean_table[] = {
    140 		{ "off",	0 },
    141 		{ "on",		1 },
    142 		{ NULL }
    143 	};
    144 
    145 	static zprop_index_t canmount_table[] = {
    146 		{ "off",	ZFS_CANMOUNT_OFF },
    147 		{ "on",		ZFS_CANMOUNT_ON },
    148 		{ "noauto",	ZFS_CANMOUNT_NOAUTO },
    149 		{ NULL }
    150 	};
    151 
    152 	static zprop_index_t cache_table[] = {
    153 		{ "none",	ZFS_CACHE_NONE },
    154 		{ "metadata",	ZFS_CACHE_METADATA },
    155 		{ "all",	ZFS_CACHE_ALL },
    156 		{ NULL }
    157 	};
    158 
    159 	/* inherit index properties */
    160 	register_index(ZFS_PROP_CHECKSUM, "checksum", ZIO_CHECKSUM_DEFAULT,
    161 	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
    162 	    "on | off | fletcher2 | fletcher4 | sha256", "CHECKSUM",
    163 	    checksum_table);
    164 	register_index(ZFS_PROP_COMPRESSION, "compression",
    165 	    ZIO_COMPRESS_DEFAULT, PROP_INHERIT,
    166 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
    167 	    "on | off | lzjb | gzip | gzip-[1-9]", "COMPRESS", compress_table);
    168 	register_index(ZFS_PROP_SNAPDIR, "snapdir", ZFS_SNAPDIR_HIDDEN,
    169 	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
    170 	    "hidden | visible", "SNAPDIR", snapdir_table);
    171 	register_index(ZFS_PROP_ACLMODE, "aclmode", ZFS_ACL_GROUPMASK,
    172 	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
    173 	    "discard | groupmask | passthrough", "ACLMODE", acl_mode_table);
    174 	register_index(ZFS_PROP_ACLINHERIT, "aclinherit", ZFS_ACL_RESTRICTED,
    175 	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
    176 	    "discard | noallow | restricted | passthrough",
    177 	    "ACLINHERIT", acl_inherit_table);
    178 	register_index(ZFS_PROP_COPIES, "copies", 1,
    179 	    PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
    180 	    "1 | 2 | 3", "COPIES", copies_table);
    181 	register_index(ZFS_PROP_PRIMARYCACHE, "primarycache",
    182 	    ZFS_CACHE_ALL, PROP_INHERIT,
    183 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
    184 	    "all | none | metadata", "PRIMARYCACHE", cache_table);
    185 	register_index(ZFS_PROP_SECONDARYCACHE, "secondarycache",
    186 	    ZFS_CACHE_ALL, PROP_INHERIT,
    187 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
    188 	    "all | none | metadata", "SECONDARYCACHE", cache_table);
    189 
    190 	/* inherit index (boolean) properties */
    191 	register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
    192 	    ZFS_TYPE_FILESYSTEM, "on | off", "ATIME", boolean_table);
    193 	register_index(ZFS_PROP_DEVICES, "devices", 1, PROP_INHERIT,
    194 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "DEVICES",
    195 	    boolean_table);
    196 	register_index(ZFS_PROP_EXEC, "exec", 1, PROP_INHERIT,
    197 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "EXEC",
    198 	    boolean_table);
    199 	register_index(ZFS_PROP_SETUID, "setuid", 1, PROP_INHERIT,
    200 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "SETUID",
    201 	    boolean_table);
    202 	register_index(ZFS_PROP_READONLY, "readonly", 0, PROP_INHERIT,
    203 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "on | off", "RDONLY",
    204 	    boolean_table);
    205 	register_index(ZFS_PROP_ZONED, "zoned", 0, PROP_INHERIT,
    206 	    ZFS_TYPE_FILESYSTEM, "on | off", "ZONED", boolean_table);
    207 	register_index(ZFS_PROP_XATTR, "xattr", 1, PROP_INHERIT,
    208 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "XATTR",
    209 	    boolean_table);
    210 	register_index(ZFS_PROP_VSCAN, "vscan", 0, PROP_INHERIT,
    211 	    ZFS_TYPE_FILESYSTEM, "on | off", "VSCAN",
    212 	    boolean_table);
    213 	register_index(ZFS_PROP_NBMAND, "nbmand", 0, PROP_INHERIT,
    214 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "NBMAND",
    215 	    boolean_table);
    216 
    217 	/* default index properties */
    218 	register_index(ZFS_PROP_VERSION, "version", 0, PROP_DEFAULT,
    219 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
    220 	    "1 | 2 | 3 | current", "VERSION", version_table);
    221 	register_index(ZFS_PROP_CANMOUNT, "canmount", ZFS_CANMOUNT_ON,
    222 	    PROP_DEFAULT, ZFS_TYPE_FILESYSTEM, "on | off | noauto",
    223 	    "CANMOUNT", canmount_table);
    224 
    225 	/* readonly index (boolean) properties */
    226 	register_index(ZFS_PROP_MOUNTED, "mounted", 0, PROP_READONLY,
    227 	    ZFS_TYPE_FILESYSTEM, "yes | no", "MOUNTED", boolean_table);
    228 
    229 	/* set once index properties */
    230 	register_index(ZFS_PROP_NORMALIZE, "normalization", 0,
    231 	    PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
    232 	    "none | formC | formD | formKC | formKD", "NORMALIZATION",
    233 	    normalize_table);
    234 	register_index(ZFS_PROP_CASE, "casesensitivity", ZFS_CASE_SENSITIVE,
    235 	    PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
    236 	    "sensitive | insensitive | mixed", "CASE", case_table);
    237 
    238 	/* set once index (boolean) properties */
    239 	register_index(ZFS_PROP_UTF8ONLY, "utf8only", 0, PROP_ONETIME,
    240 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
    241 	    "on | off", "UTF8ONLY", boolean_table);
    242 
    243 	/* string properties */
    244 	register_string(ZFS_PROP_ORIGIN, "origin", NULL, PROP_READONLY,
    245 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<snapshot>", "ORIGIN");
    246 	register_string(ZFS_PROP_MOUNTPOINT, "mountpoint", "/", PROP_INHERIT,
    247 	    ZFS_TYPE_FILESYSTEM, "<path> | legacy | none", "MOUNTPOINT");
    248 	register_string(ZFS_PROP_SHARENFS, "sharenfs", "off", PROP_INHERIT,
    249 	    ZFS_TYPE_FILESYSTEM, "on | off | share(1M) options", "SHARENFS");
    250 	register_string(ZFS_PROP_SHAREISCSI, "shareiscsi", "off", PROP_INHERIT,
    251 	    ZFS_TYPE_DATASET, "on | off | type=<type>", "SHAREISCSI");
    252 	register_string(ZFS_PROP_TYPE, "type", NULL, PROP_READONLY,
    253 	    ZFS_TYPE_DATASET, "filesystem | volume | snapshot", "TYPE");
    254 	register_string(ZFS_PROP_SHARESMB, "sharesmb", "off", PROP_INHERIT,
    255 	    ZFS_TYPE_FILESYSTEM, "on | off | sharemgr(1M) options", "SHARESMB");
    256 
    257 	/* readonly number properties */
    258 	register_number(ZFS_PROP_USED, "used", 0, PROP_READONLY,
    259 	    ZFS_TYPE_DATASET, "<size>", "USED");
    260 	register_number(ZFS_PROP_AVAILABLE, "available", 0, PROP_READONLY,
    261 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "AVAIL");
    262 	register_number(ZFS_PROP_REFERENCED, "referenced", 0, PROP_READONLY,
    263 	    ZFS_TYPE_DATASET, "<size>", "REFER");
    264 	register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0,
    265 	    PROP_READONLY, ZFS_TYPE_DATASET,
    266 	    "<1.00x or higher if compressed>", "RATIO");
    267 	register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize", 8192,
    268 	    PROP_ONETIME,
    269 	    ZFS_TYPE_VOLUME, "512 to 128k, power of 2",	"VOLBLOCK");
    270 	register_number(ZFS_PROP_USEDSNAP, "usedbysnapshots", 0, PROP_READONLY,
    271 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDSNAP");
    272 	register_number(ZFS_PROP_USEDDS, "usedbydataset", 0, PROP_READONLY,
    273 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDDS");
    274 	register_number(ZFS_PROP_USEDCHILD, "usedbychildren", 0, PROP_READONLY,
    275 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDCHILD");
    276 	register_number(ZFS_PROP_USEDREFRESERV, "usedbyrefreservation", 0,
    277 	    PROP_READONLY,
    278 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDREFRESERV");
    279 
    280 	/* default number properties */
    281 	register_number(ZFS_PROP_QUOTA, "quota", 0, PROP_DEFAULT,
    282 	    ZFS_TYPE_FILESYSTEM, "<size> | none", "QUOTA");
    283 	register_number(ZFS_PROP_RESERVATION, "reservation", 0, PROP_DEFAULT,
    284 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size> | none", "RESERV");
    285 	register_number(ZFS_PROP_VOLSIZE, "volsize", 0, PROP_DEFAULT,
    286 	    ZFS_TYPE_VOLUME, "<size>", "VOLSIZE");
    287 	register_number(ZFS_PROP_REFQUOTA, "refquota", 0, PROP_DEFAULT,
    288 	    ZFS_TYPE_FILESYSTEM, "<size> | none", "REFQUOTA");
    289 	register_number(ZFS_PROP_REFRESERVATION, "refreservation", 0,
    290 	    PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
    291 	    "<size> | none", "REFRESERV");
    292 
    293 	/* inherit number properties */
    294 	register_number(ZFS_PROP_RECORDSIZE, "recordsize", SPA_MAXBLOCKSIZE,
    295 	    PROP_INHERIT,
    296 	    ZFS_TYPE_FILESYSTEM, "512 to 128k, power of 2", "RECSIZE");
    297 
    298 	/* hidden properties */
    299 	register_hidden(ZFS_PROP_CREATETXG, "createtxg", PROP_TYPE_NUMBER,
    300 	    PROP_READONLY, ZFS_TYPE_DATASET, NULL);
    301 	register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,
    302 	    PROP_READONLY, ZFS_TYPE_SNAPSHOT, NULL);
    303 	register_hidden(ZFS_PROP_NAME, "name", PROP_TYPE_STRING,
    304 	    PROP_READONLY, ZFS_TYPE_DATASET, "NAME");
    305 	register_hidden(ZFS_PROP_ISCSIOPTIONS, "iscsioptions", PROP_TYPE_STRING,
    306 	    PROP_INHERIT, ZFS_TYPE_VOLUME, "ISCSIOPTIONS");
    307 	register_hidden(ZFS_PROP_GUID, "guid", PROP_TYPE_NUMBER, PROP_READONLY,
    308 	    ZFS_TYPE_DATASET, "GUID");
    309 
    310 	/* oddball properties */
    311 	register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0, NULL,
    312 	    PROP_READONLY, ZFS_TYPE_DATASET,
    313 	    "<date>", "CREATION", B_FALSE, B_TRUE, NULL);
    314 }
    315 
    316 boolean_t
    317 zfs_prop_delegatable(zfs_prop_t prop)
    318 {
    319 	zprop_desc_t *pd = &zfs_prop_table[prop];
    320 	return (pd->pd_attr != PROP_READONLY);
    321 }
    322 
    323 /*
    324  * Given a zfs dataset property name, returns the corresponding property ID.
    325  */
    326 zfs_prop_t
    327 zfs_name_to_prop(const char *propname)
    328 {
    329 	return (zprop_name_to_prop(propname, ZFS_TYPE_DATASET));
    330 }
    331 
    332 
    333 /*
    334  * For user property names, we allow all lowercase alphanumeric characters, plus
    335  * a few useful punctuation characters.
    336  */
    337 static int
    338 valid_char(char c)
    339 {
    340 	return ((c >= 'a' && c <= 'z') ||
    341 	    (c >= '0' && c <= '9') ||
    342 	    c == '-' || c == '_' || c == '.' || c == ':');
    343 }
    344 
    345 /*
    346  * Returns true if this is a valid user-defined property (one with a ':').
    347  */
    348 boolean_t
    349 zfs_prop_user(const char *name)
    350 {
    351 	int i;
    352 	char c;
    353 	boolean_t foundsep = B_FALSE;
    354 
    355 	for (i = 0; i < strlen(name); i++) {
    356 		c = name[i];
    357 		if (!valid_char(c))
    358 			return (B_FALSE);
    359 		if (c == ':')
    360 			foundsep = B_TRUE;
    361 	}
    362 
    363 	if (!foundsep)
    364 		return (B_FALSE);
    365 
    366 	return (B_TRUE);
    367 }
    368 
    369 /*
    370  * Tables of index types, plus functions to convert between the user view
    371  * (strings) and internal representation (uint64_t).
    372  */
    373 int
    374 zfs_prop_string_to_index(zfs_prop_t prop, const char *string, uint64_t *index)
    375 {
    376 	return (zprop_string_to_index(prop, string, index, ZFS_TYPE_DATASET));
    377 }
    378 
    379 int
    380 zfs_prop_index_to_string(zfs_prop_t prop, uint64_t index, const char **string)
    381 {
    382 	return (zprop_index_to_string(prop, index, string, ZFS_TYPE_DATASET));
    383 }
    384 
    385 /*
    386  * Returns TRUE if the property applies to any of the given dataset types.
    387  */
    388 boolean_t
    389 zfs_prop_valid_for_type(int prop, zfs_type_t types)
    390 {
    391 	return (zprop_valid_for_type(prop, types));
    392 }
    393 
    394 zprop_type_t
    395 zfs_prop_get_type(zfs_prop_t prop)
    396 {
    397 	return (zfs_prop_table[prop].pd_proptype);
    398 }
    399 
    400 /*
    401  * Returns TRUE if the property is readonly.
    402  */
    403 boolean_t
    404 zfs_prop_readonly(zfs_prop_t prop)
    405 {
    406 	return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
    407 	    zfs_prop_table[prop].pd_attr == PROP_ONETIME);
    408 }
    409 
    410 /*
    411  * Returns TRUE if the property is only allowed to be set once.
    412  */
    413 boolean_t
    414 zfs_prop_setonce(zfs_prop_t prop)
    415 {
    416 	return (zfs_prop_table[prop].pd_attr == PROP_ONETIME);
    417 }
    418 
    419 const char *
    420 zfs_prop_default_string(zfs_prop_t prop)
    421 {
    422 	return (zfs_prop_table[prop].pd_strdefault);
    423 }
    424 
    425 uint64_t
    426 zfs_prop_default_numeric(zfs_prop_t prop)
    427 {
    428 	return (zfs_prop_table[prop].pd_numdefault);
    429 }
    430 
    431 /*
    432  * Given a dataset property ID, returns the corresponding name.
    433  * Assuming the zfs dataset property ID is valid.
    434  */
    435 const char *
    436 zfs_prop_to_name(zfs_prop_t prop)
    437 {
    438 	return (zfs_prop_table[prop].pd_name);
    439 }
    440 
    441 /*
    442  * Returns TRUE if the property is inheritable.
    443  */
    444 boolean_t
    445 zfs_prop_inheritable(zfs_prop_t prop)
    446 {
    447 	return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
    448 	    zfs_prop_table[prop].pd_attr == PROP_ONETIME);
    449 }
    450 
    451 #ifndef _KERNEL
    452 
    453 /*
    454  * Returns a string describing the set of acceptable values for the given
    455  * zfs property, or NULL if it cannot be set.
    456  */
    457 const char *
    458 zfs_prop_values(zfs_prop_t prop)
    459 {
    460 	return (zfs_prop_table[prop].pd_values);
    461 }
    462 
    463 /*
    464  * Returns TRUE if this property is a string type.  Note that index types
    465  * (compression, checksum) are treated as strings in userland, even though they
    466  * are stored numerically on disk.
    467  */
    468 int
    469 zfs_prop_is_string(zfs_prop_t prop)
    470 {
    471 	return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
    472 	    zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
    473 }
    474 
    475 /*
    476  * Returns the column header for the given property.  Used only in
    477  * 'zfs list -o', but centralized here with the other property information.
    478  */
    479 const char *
    480 zfs_prop_column_name(zfs_prop_t prop)
    481 {
    482 	return (zfs_prop_table[prop].pd_colname);
    483 }
    484 
    485 /*
    486  * Returns whether the given property should be displayed right-justified for
    487  * 'zfs list'.
    488  */
    489 boolean_t
    490 zfs_prop_align_right(zfs_prop_t prop)
    491 {
    492 	return (zfs_prop_table[prop].pd_rightalign);
    493 }
    494 
    495 #endif
    496