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