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freebsd-nq/module/zcommon/zfs_prop.c
Christian Schwarz 305bc4b370 Make createtxg and guid properties public 
Document the existence of `createtxg` and `guid` native properties
in man pages and zfs command output.

One of the great features of ZFS is incremental replication of
snapshots, possibly between pools on different machines.

Shell scripts are commonly used to auomate this procedure. They have to
find the most recent common snapshot between both sides and then
perform incremental send & recv.
Currently, scripts rely on the sorting order of `zfs list`, which
defaults to `createtxg`, and the assumption that snapshot names on
either side do not change.

By making `createtxg` and `guid` part of the public ZFS interface,
scripts are enabled to use

  a) `createtxg` to determine the logical & temporal order of snapshots
     (the creation property is not an equivalent substitute since
      multiple snapshots may be created within one second)
  b) `guid` to uniquely identify a snapshot, independent of its current
      display name

This has the potential of making scripts safer and correct.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: DHE <git@dehacked.net>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Christian Schwarz <me@cschwarz.com>
Closes #6102
2017-05-09 15:36:53 -07:00

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright 2016, Joyent, Inc.
*/
/* Portions Copyright 2010 Robert Milkowski */
#include <sys/zio.h>
#include <sys/spa.h>
#include <sys/u8_textprep.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_znode.h>
#include "zfs_prop.h"
#include "zfs_deleg.h"
#include "zfs_fletcher.h"
#if defined(_KERNEL)
#include <sys/systm.h>
#else
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#endif
static zprop_desc_t zfs_prop_table[ZFS_NUM_PROPS];
/* Note this is indexed by zfs_userquota_prop_t, keep the order the same */
const char *zfs_userquota_prop_prefixes[] = {
"userused@",
"userquota@",
"groupused@",
"groupquota@",
"userobjused@",
"userobjquota@",
"groupobjused@",
"groupobjquota@"
};
zprop_desc_t *
zfs_prop_get_table(void)
{
return (zfs_prop_table);
}
void
zfs_prop_init(void)
{
static zprop_index_t checksum_table[] = {
{ "on", ZIO_CHECKSUM_ON },
{ "off", ZIO_CHECKSUM_OFF },
{ "fletcher2", ZIO_CHECKSUM_FLETCHER_2 },
{ "fletcher4", ZIO_CHECKSUM_FLETCHER_4 },
{ "sha256", ZIO_CHECKSUM_SHA256 },
{ "noparity", ZIO_CHECKSUM_NOPARITY },
{ "sha512", ZIO_CHECKSUM_SHA512 },
{ "skein", ZIO_CHECKSUM_SKEIN },
{ "edonr", ZIO_CHECKSUM_EDONR },
{ NULL }
};
static zprop_index_t dedup_table[] = {
{ "on", ZIO_CHECKSUM_ON },
{ "off", ZIO_CHECKSUM_OFF },
{ "verify", ZIO_CHECKSUM_ON | ZIO_CHECKSUM_VERIFY },
{ "sha256", ZIO_CHECKSUM_SHA256 },
{ "sha256,verify",
ZIO_CHECKSUM_SHA256 | ZIO_CHECKSUM_VERIFY },
{ "sha512", ZIO_CHECKSUM_SHA512 },
{ "sha512,verify",
ZIO_CHECKSUM_SHA512 | ZIO_CHECKSUM_VERIFY },
{ "skein", ZIO_CHECKSUM_SKEIN },
{ "skein,verify",
ZIO_CHECKSUM_SKEIN | ZIO_CHECKSUM_VERIFY },
{ "edonr,verify",
ZIO_CHECKSUM_EDONR | ZIO_CHECKSUM_VERIFY },
{ NULL }
};
static zprop_index_t compress_table[] = {
{ "on", ZIO_COMPRESS_ON },
{ "off", ZIO_COMPRESS_OFF },
{ "lzjb", ZIO_COMPRESS_LZJB },
{ "gzip", ZIO_COMPRESS_GZIP_6 }, /* gzip default */
{ "gzip-1", ZIO_COMPRESS_GZIP_1 },
{ "gzip-2", ZIO_COMPRESS_GZIP_2 },
{ "gzip-3", ZIO_COMPRESS_GZIP_3 },
{ "gzip-4", ZIO_COMPRESS_GZIP_4 },
{ "gzip-5", ZIO_COMPRESS_GZIP_5 },
{ "gzip-6", ZIO_COMPRESS_GZIP_6 },
{ "gzip-7", ZIO_COMPRESS_GZIP_7 },
{ "gzip-8", ZIO_COMPRESS_GZIP_8 },
{ "gzip-9", ZIO_COMPRESS_GZIP_9 },
{ "zle", ZIO_COMPRESS_ZLE },
{ "lz4", ZIO_COMPRESS_LZ4 },
{ NULL }
};
static zprop_index_t snapdir_table[] = {
{ "hidden", ZFS_SNAPDIR_HIDDEN },
{ "visible", ZFS_SNAPDIR_VISIBLE },
{ NULL }
};
static zprop_index_t snapdev_table[] = {
{ "hidden", ZFS_SNAPDEV_HIDDEN },
{ "visible", ZFS_SNAPDEV_VISIBLE },
{ NULL }
};
static zprop_index_t acltype_table[] = {
{ "off", ZFS_ACLTYPE_OFF },
{ "disabled", ZFS_ACLTYPE_OFF },
{ "noacl", ZFS_ACLTYPE_OFF },
{ "posixacl", ZFS_ACLTYPE_POSIXACL },
{ NULL }
};
static zprop_index_t acl_inherit_table[] = {
{ "discard", ZFS_ACL_DISCARD },
{ "noallow", ZFS_ACL_NOALLOW },
{ "restricted", ZFS_ACL_RESTRICTED },
{ "passthrough", ZFS_ACL_PASSTHROUGH },
{ "secure", ZFS_ACL_RESTRICTED }, /* bkwrd compatibility */
{ "passthrough-x", ZFS_ACL_PASSTHROUGH_X },
{ NULL }
};
static zprop_index_t case_table[] = {
{ "sensitive", ZFS_CASE_SENSITIVE },
{ "insensitive", ZFS_CASE_INSENSITIVE },
{ "mixed", ZFS_CASE_MIXED },
{ NULL }
};
static zprop_index_t copies_table[] = {
{ "1", 1 },
{ "2", 2 },
{ "3", 3 },
{ NULL }
};
/*
* Use the unique flags we have to send to u8_strcmp() and/or
* u8_textprep() to represent the various normalization property
* values.
*/
static zprop_index_t normalize_table[] = {
{ "none", 0 },
{ "formD", U8_TEXTPREP_NFD },
{ "formKC", U8_TEXTPREP_NFKC },
{ "formC", U8_TEXTPREP_NFC },
{ "formKD", U8_TEXTPREP_NFKD },
{ NULL }
};
static zprop_index_t version_table[] = {
{ "1", 1 },
{ "2", 2 },
{ "3", 3 },
{ "4", 4 },
{ "5", 5 },
{ "current", ZPL_VERSION },
{ NULL }
};
static zprop_index_t boolean_table[] = {
{ "off", 0 },
{ "on", 1 },
{ NULL }
};
static zprop_index_t logbias_table[] = {
{ "latency", ZFS_LOGBIAS_LATENCY },
{ "throughput", ZFS_LOGBIAS_THROUGHPUT },
{ NULL }
};
static zprop_index_t canmount_table[] = {
{ "off", ZFS_CANMOUNT_OFF },
{ "on", ZFS_CANMOUNT_ON },
{ "noauto", ZFS_CANMOUNT_NOAUTO },
{ NULL }
};
static zprop_index_t cache_table[] = {
{ "none", ZFS_CACHE_NONE },
{ "metadata", ZFS_CACHE_METADATA },
{ "all", ZFS_CACHE_ALL },
{ NULL }
};
static zprop_index_t sync_table[] = {
{ "standard", ZFS_SYNC_STANDARD },
{ "always", ZFS_SYNC_ALWAYS },
{ "disabled", ZFS_SYNC_DISABLED },
{ NULL }
};
static zprop_index_t xattr_table[] = {
{ "off", ZFS_XATTR_OFF },
{ "on", ZFS_XATTR_DIR },
{ "sa", ZFS_XATTR_SA },
{ "dir", ZFS_XATTR_DIR },
{ NULL }
};
static zprop_index_t dnsize_table[] = {
{ "legacy", ZFS_DNSIZE_LEGACY },
{ "auto", ZFS_DNSIZE_AUTO },
{ "1k", ZFS_DNSIZE_1K },
{ "2k", ZFS_DNSIZE_2K },
{ "4k", ZFS_DNSIZE_4K },
{ "8k", ZFS_DNSIZE_8K },
{ "16k", ZFS_DNSIZE_16K },
{ NULL }
};
static zprop_index_t redundant_metadata_table[] = {
{ "all", ZFS_REDUNDANT_METADATA_ALL },
{ "most", ZFS_REDUNDANT_METADATA_MOST },
{ NULL }
};
/* inherit index properties */
zprop_register_index(ZFS_PROP_REDUNDANT_METADATA, "redundant_metadata",
ZFS_REDUNDANT_METADATA_ALL,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"all | most", "REDUND_MD",
redundant_metadata_table);
zprop_register_index(ZFS_PROP_SYNC, "sync", ZFS_SYNC_STANDARD,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"standard | always | disabled", "SYNC",
sync_table);
zprop_register_index(ZFS_PROP_CHECKSUM, "checksum",
ZIO_CHECKSUM_DEFAULT, PROP_INHERIT, ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_VOLUME,
"on | off | fletcher2 | fletcher4 | sha256 | sha512 | "
"skein | edonr", "CHECKSUM", checksum_table);
zprop_register_index(ZFS_PROP_DEDUP, "dedup", ZIO_CHECKSUM_OFF,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"on | off | verify | sha256[,verify], sha512[,verify], "
"skein[,verify], edonr,verify", "DEDUP", dedup_table);
zprop_register_index(ZFS_PROP_COMPRESSION, "compression",
ZIO_COMPRESS_DEFAULT, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"on | off | lzjb | gzip | gzip-[1-9] | zle | lz4", "COMPRESS",
compress_table);
zprop_register_index(ZFS_PROP_SNAPDIR, "snapdir", ZFS_SNAPDIR_HIDDEN,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
"hidden | visible", "SNAPDIR", snapdir_table);
zprop_register_index(ZFS_PROP_SNAPDEV, "snapdev", ZFS_SNAPDEV_HIDDEN,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"hidden | visible", "SNAPDEV", snapdev_table);
zprop_register_index(ZFS_PROP_ACLTYPE, "acltype", ZFS_ACLTYPE_OFF,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
"noacl | posixacl", "ACLTYPE", acltype_table);
zprop_register_index(ZFS_PROP_ACLINHERIT, "aclinherit",
ZFS_ACL_RESTRICTED, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
"discard | noallow | restricted | passthrough | passthrough-x",
"ACLINHERIT", acl_inherit_table);
zprop_register_index(ZFS_PROP_COPIES, "copies", 1, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"1 | 2 | 3", "COPIES", copies_table);
zprop_register_index(ZFS_PROP_PRIMARYCACHE, "primarycache",
ZFS_CACHE_ALL, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
"all | none | metadata", "PRIMARYCACHE", cache_table);
zprop_register_index(ZFS_PROP_SECONDARYCACHE, "secondarycache",
ZFS_CACHE_ALL, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME,
"all | none | metadata", "SECONDARYCACHE", cache_table);
zprop_register_index(ZFS_PROP_LOGBIAS, "logbias", ZFS_LOGBIAS_LATENCY,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"latency | throughput", "LOGBIAS", logbias_table);
zprop_register_index(ZFS_PROP_XATTR, "xattr", ZFS_XATTR_DIR,
PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
"on | off | dir | sa", "XATTR", xattr_table);
zprop_register_index(ZFS_PROP_DNODESIZE, "dnodesize",
ZFS_DNSIZE_LEGACY, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
"legacy | auto | 1k | 2k | 4k | 8k | 16k", "DNSIZE", dnsize_table);
/* inherit index (boolean) properties */
zprop_register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "on | off", "ATIME", boolean_table);
zprop_register_index(ZFS_PROP_RELATIME, "relatime", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "on | off", "RELATIME", boolean_table);
zprop_register_index(ZFS_PROP_DEVICES, "devices", 1, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "DEVICES",
boolean_table);
zprop_register_index(ZFS_PROP_EXEC, "exec", 1, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "EXEC",
boolean_table);
zprop_register_index(ZFS_PROP_SETUID, "setuid", 1, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "SETUID",
boolean_table);
zprop_register_index(ZFS_PROP_READONLY, "readonly", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "on | off", "RDONLY",
boolean_table);
zprop_register_index(ZFS_PROP_ZONED, "zoned", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "on | off", "ZONED", boolean_table);
zprop_register_index(ZFS_PROP_VSCAN, "vscan", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "on | off", "VSCAN", boolean_table);
zprop_register_index(ZFS_PROP_NBMAND, "nbmand", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT, "on | off", "NBMAND",
boolean_table);
zprop_register_index(ZFS_PROP_OVERLAY, "overlay", 0, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "on | off", "OVERLAY", boolean_table);
/* default index properties */
zprop_register_index(ZFS_PROP_VERSION, "version", 0, PROP_DEFAULT,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
"1 | 2 | 3 | 4 | 5 | current", "VERSION", version_table);
zprop_register_index(ZFS_PROP_CANMOUNT, "canmount", ZFS_CANMOUNT_ON,
PROP_DEFAULT, ZFS_TYPE_FILESYSTEM, "on | off | noauto",
"CANMOUNT", canmount_table);
/* readonly index (boolean) properties */
zprop_register_index(ZFS_PROP_MOUNTED, "mounted", 0, PROP_READONLY,
ZFS_TYPE_FILESYSTEM, "yes | no", "MOUNTED", boolean_table);
zprop_register_index(ZFS_PROP_DEFER_DESTROY, "defer_destroy", 0,
PROP_READONLY, ZFS_TYPE_SNAPSHOT, "yes | no", "DEFER_DESTROY",
boolean_table);
/* set once index properties */
zprop_register_index(ZFS_PROP_NORMALIZE, "normalization", 0,
PROP_ONETIME, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
"none | formC | formD | formKC | formKD", "NORMALIZATION",
normalize_table);
zprop_register_index(ZFS_PROP_CASE, "casesensitivity",
ZFS_CASE_SENSITIVE, PROP_ONETIME, ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_SNAPSHOT,
"sensitive | insensitive | mixed", "CASE", case_table);
/* set once index (boolean) properties */
zprop_register_index(ZFS_PROP_UTF8ONLY, "utf8only", 0, PROP_ONETIME,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT,
"on | off", "UTF8ONLY", boolean_table);
/* string properties */
zprop_register_string(ZFS_PROP_ORIGIN, "origin", NULL, PROP_READONLY,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<snapshot>", "ORIGIN");
zprop_register_string(ZFS_PROP_CLONES, "clones", NULL, PROP_READONLY,
ZFS_TYPE_SNAPSHOT, "<dataset>[,...]", "CLONES");
zprop_register_string(ZFS_PROP_MOUNTPOINT, "mountpoint", "/",
PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "<path> | legacy | none",
"MOUNTPOINT");
zprop_register_string(ZFS_PROP_SHARENFS, "sharenfs", "off",
PROP_INHERIT, ZFS_TYPE_FILESYSTEM, "on | off | share(1M) options",
"SHARENFS");
zprop_register_string(ZFS_PROP_TYPE, "type", NULL, PROP_READONLY,
ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
"filesystem | volume | snapshot | bookmark", "TYPE");
zprop_register_string(ZFS_PROP_SHARESMB, "sharesmb", "off",
PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
"on | off | sharemgr(1M) options", "SHARESMB");
zprop_register_string(ZFS_PROP_MLSLABEL, "mlslabel",
ZFS_MLSLABEL_DEFAULT, PROP_INHERIT, ZFS_TYPE_DATASET,
"<sensitivity label>", "MLSLABEL");
zprop_register_string(ZFS_PROP_SELINUX_CONTEXT, "context",
"none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux context>",
"CONTEXT");
zprop_register_string(ZFS_PROP_SELINUX_FSCONTEXT, "fscontext",
"none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux fscontext>",
"FSCONTEXT");
zprop_register_string(ZFS_PROP_SELINUX_DEFCONTEXT, "defcontext",
"none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux defcontext>",
"DEFCONTEXT");
zprop_register_string(ZFS_PROP_SELINUX_ROOTCONTEXT, "rootcontext",
"none", PROP_DEFAULT, ZFS_TYPE_DATASET, "<selinux rootcontext>",
"ROOTCONTEXT");
zprop_register_string(ZFS_PROP_RECEIVE_RESUME_TOKEN,
"receive_resume_token",
NULL, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"<string token>", "RESUMETOK");
/* readonly number properties */
zprop_register_number(ZFS_PROP_USED, "used", 0, PROP_READONLY,
ZFS_TYPE_DATASET, "<size>", "USED");
zprop_register_number(ZFS_PROP_AVAILABLE, "available", 0, PROP_READONLY,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "AVAIL");
zprop_register_number(ZFS_PROP_REFERENCED, "referenced", 0,
PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "REFER");
zprop_register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0,
PROP_READONLY, ZFS_TYPE_DATASET,
"<1.00x or higher if compressed>", "RATIO");
zprop_register_number(ZFS_PROP_REFRATIO, "refcompressratio", 0,
PROP_READONLY, ZFS_TYPE_DATASET,
"<1.00x or higher if compressed>", "REFRATIO");
zprop_register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize",
ZVOL_DEFAULT_BLOCKSIZE, PROP_ONETIME,
ZFS_TYPE_VOLUME, "512 to 128k, power of 2", "VOLBLOCK");
zprop_register_number(ZFS_PROP_USEDSNAP, "usedbysnapshots", 0,
PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
"USEDSNAP");
zprop_register_number(ZFS_PROP_USEDDS, "usedbydataset", 0,
PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
"USEDDS");
zprop_register_number(ZFS_PROP_USEDCHILD, "usedbychildren", 0,
PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>",
"USEDCHILD");
zprop_register_number(ZFS_PROP_USEDREFRESERV, "usedbyrefreservation", 0,
PROP_READONLY,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "<size>", "USEDREFRESERV");
zprop_register_number(ZFS_PROP_USERREFS, "userrefs", 0, PROP_READONLY,
ZFS_TYPE_SNAPSHOT, "<count>", "USERREFS");
zprop_register_number(ZFS_PROP_WRITTEN, "written", 0, PROP_READONLY,
ZFS_TYPE_DATASET, "<size>", "WRITTEN");
zprop_register_number(ZFS_PROP_LOGICALUSED, "logicalused", 0,
PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "LUSED");
zprop_register_number(ZFS_PROP_LOGICALREFERENCED, "logicalreferenced",
0, PROP_READONLY, ZFS_TYPE_DATASET, "<size>", "LREFER");
zprop_register_number(ZFS_PROP_FILESYSTEM_COUNT, "filesystem_count",
UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
"<count>", "FSCOUNT");
zprop_register_number(ZFS_PROP_SNAPSHOT_COUNT, "snapshot_count",
UINT64_MAX, PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"<count>", "SSCOUNT");
zprop_register_number(ZFS_PROP_GUID, "guid", 0, PROP_READONLY,
ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "GUID");
zprop_register_number(ZFS_PROP_CREATETXG, "createtxg", 0, PROP_READONLY,
ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "<uint64>", "CREATETXG");
/* default number properties */
zprop_register_number(ZFS_PROP_QUOTA, "quota", 0, PROP_DEFAULT,
ZFS_TYPE_FILESYSTEM, "<size> | none", "QUOTA");
zprop_register_number(ZFS_PROP_RESERVATION, "reservation", 0,
PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"<size> | none", "RESERV");
zprop_register_number(ZFS_PROP_VOLSIZE, "volsize", 0, PROP_DEFAULT,
ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME, "<size>", "VOLSIZE");
zprop_register_number(ZFS_PROP_REFQUOTA, "refquota", 0, PROP_DEFAULT,
ZFS_TYPE_FILESYSTEM, "<size> | none", "REFQUOTA");
zprop_register_number(ZFS_PROP_REFRESERVATION, "refreservation", 0,
PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"<size> | none", "REFRESERV");
zprop_register_number(ZFS_PROP_FILESYSTEM_LIMIT, "filesystem_limit",
UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM,
"<count> | none", "FSLIMIT");
zprop_register_number(ZFS_PROP_SNAPSHOT_LIMIT, "snapshot_limit",
UINT64_MAX, PROP_DEFAULT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
"<count> | none", "SSLIMIT");
/* inherit number properties */
zprop_register_number(ZFS_PROP_RECORDSIZE, "recordsize",
SPA_OLD_MAXBLOCKSIZE, PROP_INHERIT,
ZFS_TYPE_FILESYSTEM, "512 to 1M, power of 2", "RECSIZE");
/* hidden properties */
zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,
PROP_READONLY, ZFS_TYPE_SNAPSHOT, "NUMCLONES");
zprop_register_hidden(ZFS_PROP_NAME, "name", PROP_TYPE_STRING,
PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK, "NAME");
zprop_register_hidden(ZFS_PROP_ISCSIOPTIONS, "iscsioptions",
PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME, "ISCSIOPTIONS");
zprop_register_hidden(ZFS_PROP_STMF_SHAREINFO, "stmf_sbd_lu",
PROP_TYPE_STRING, PROP_INHERIT, ZFS_TYPE_VOLUME,
"STMF_SBD_LU");
zprop_register_hidden(ZFS_PROP_USERACCOUNTING, "useraccounting",
PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET,
"USERACCOUNTING");
zprop_register_hidden(ZFS_PROP_UNIQUE, "unique", PROP_TYPE_NUMBER,
PROP_READONLY, ZFS_TYPE_DATASET, "UNIQUE");
zprop_register_hidden(ZFS_PROP_OBJSETID, "objsetid", PROP_TYPE_NUMBER,
PROP_READONLY, ZFS_TYPE_DATASET, "OBJSETID");
zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent",
PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT");
zprop_register_hidden(ZFS_PROP_PREV_SNAP, "prevsnap", PROP_TYPE_STRING,
PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PREVSNAP");
/*
* Property to be removed once libbe is integrated
*/
zprop_register_hidden(ZFS_PROP_PRIVATE, "priv_prop",
PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
"PRIV_PROP");
/* oddball properties */
zprop_register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0,
NULL, PROP_READONLY, ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK,
"<date>", "CREATION", B_FALSE, B_TRUE, NULL);
}
boolean_t
zfs_prop_delegatable(zfs_prop_t prop)
{
zprop_desc_t *pd = &zfs_prop_table[prop];
/* The mlslabel property is never delegatable. */
if (prop == ZFS_PROP_MLSLABEL)
return (B_FALSE);
return (pd->pd_attr != PROP_READONLY);
}
/*
* Given a zfs dataset property name, returns the corresponding property ID.
*/
zfs_prop_t
zfs_name_to_prop(const char *propname)
{
return (zprop_name_to_prop(propname, ZFS_TYPE_DATASET));
}
/*
* For user property names, we allow all lowercase alphanumeric characters, plus
* a few useful punctuation characters.
*/
static int
valid_char(char c)
{
return ((c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') ||
c == '-' || c == '_' || c == '.' || c == ':');
}
/*
* Returns true if this is a valid user-defined property (one with a ':').
*/
boolean_t
zfs_prop_user(const char *name)
{
int i;
char c;
boolean_t foundsep = B_FALSE;
for (i = 0; i < strlen(name); i++) {
c = name[i];
if (!valid_char(c))
return (B_FALSE);
if (c == ':')
foundsep = B_TRUE;
}
if (!foundsep)
return (B_FALSE);
return (B_TRUE);
}
/*
* Returns true if this is a valid userspace-type property (one with a '@').
* Note that after the @, any character is valid (eg, another @, for SID
* user@domain).
*/
boolean_t
zfs_prop_userquota(const char *name)
{
zfs_userquota_prop_t prop;
for (prop = 0; prop < ZFS_NUM_USERQUOTA_PROPS; prop++) {
if (strncmp(name, zfs_userquota_prop_prefixes[prop],
strlen(zfs_userquota_prop_prefixes[prop])) == 0) {
return (B_TRUE);
}
}
return (B_FALSE);
}
/*
* Returns true if this is a valid written@ property.
* Note that after the @, any character is valid (eg, another @, for
* written@pool/fs@origin).
*/
boolean_t
zfs_prop_written(const char *name)
{
static const char *prefix = "written@";
return (strncmp(name, prefix, strlen(prefix)) == 0);
}
/*
* Tables of index types, plus functions to convert between the user view
* (strings) and internal representation (uint64_t).
*/
int
zfs_prop_string_to_index(zfs_prop_t prop, const char *string, uint64_t *index)
{
return (zprop_string_to_index(prop, string, index, ZFS_TYPE_DATASET));
}
int
zfs_prop_index_to_string(zfs_prop_t prop, uint64_t index, const char **string)
{
return (zprop_index_to_string(prop, index, string, ZFS_TYPE_DATASET));
}
uint64_t
zfs_prop_random_value(zfs_prop_t prop, uint64_t seed)
{
return (zprop_random_value(prop, seed, ZFS_TYPE_DATASET));
}
/*
* Returns TRUE if the property applies to any of the given dataset types.
*/
boolean_t
zfs_prop_valid_for_type(int prop, zfs_type_t types, boolean_t headcheck)
{
return (zprop_valid_for_type(prop, types, headcheck));
}
zprop_type_t
zfs_prop_get_type(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_proptype);
}
/*
* Returns TRUE if the property is readonly.
*/
boolean_t
zfs_prop_readonly(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME);
}
/*
* Returns TRUE if the property is only allowed to be set once.
*/
boolean_t
zfs_prop_setonce(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_attr == PROP_ONETIME);
}
const char *
zfs_prop_default_string(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_strdefault);
}
uint64_t
zfs_prop_default_numeric(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_numdefault);
}
/*
* Given a dataset property ID, returns the corresponding name.
* Assuming the zfs dataset property ID is valid.
*/
const char *
zfs_prop_to_name(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_name);
}
/*
* Returns TRUE if the property is inheritable.
*/
boolean_t
zfs_prop_inheritable(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME);
}
#ifndef _KERNEL
/*
* Returns a string describing the set of acceptable values for the given
* zfs property, or NULL if it cannot be set.
*/
const char *
zfs_prop_values(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_values);
}
/*
* Returns TRUE if this property is a string type. Note that index types
* (compression, checksum) are treated as strings in userland, even though they
* are stored numerically on disk.
*/
int
zfs_prop_is_string(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
}
/*
* Returns the column header for the given property. Used only in
* 'zfs list -o', but centralized here with the other property information.
*/
const char *
zfs_prop_column_name(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_colname);
}
/*
* Returns whether the given property should be displayed right-justified for
* 'zfs list'.
*/
boolean_t
zfs_prop_align_right(zfs_prop_t prop)
{
return (zfs_prop_table[prop].pd_rightalign);
}
#endif
#if defined(_KERNEL) && defined(HAVE_SPL)
static int __init
zcommon_init(void)
{
fletcher_4_init();
return (0);
}
static void __exit
zcommon_fini(void)
{
fletcher_4_fini();
}
module_init(zcommon_init);
module_exit(zcommon_fini);
MODULE_DESCRIPTION("Generic ZFS support");
MODULE_AUTHOR(ZFS_META_AUTHOR);
MODULE_LICENSE(ZFS_META_LICENSE);
MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
/* zfs dataset property functions */
EXPORT_SYMBOL(zfs_userquota_prop_prefixes);
EXPORT_SYMBOL(zfs_prop_init);
EXPORT_SYMBOL(zfs_prop_get_type);
EXPORT_SYMBOL(zfs_prop_get_table);
EXPORT_SYMBOL(zfs_prop_delegatable);
/* Dataset property functions shared between libzfs and kernel. */
EXPORT_SYMBOL(zfs_prop_default_string);
EXPORT_SYMBOL(zfs_prop_default_numeric);
EXPORT_SYMBOL(zfs_prop_readonly);
EXPORT_SYMBOL(zfs_prop_inheritable);
EXPORT_SYMBOL(zfs_prop_setonce);
EXPORT_SYMBOL(zfs_prop_to_name);
EXPORT_SYMBOL(zfs_name_to_prop);
EXPORT_SYMBOL(zfs_prop_user);
EXPORT_SYMBOL(zfs_prop_userquota);
EXPORT_SYMBOL(zfs_prop_index_to_string);
EXPORT_SYMBOL(zfs_prop_string_to_index);
EXPORT_SYMBOL(zfs_prop_valid_for_type);
#endif
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