[mirror_zfs.git] / module / zcommon / zprop_common.c

/*
 * 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 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Common routines used by zfs and zpool property management.
 */

#include <sys/zio.h>
#include <sys/spa.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_znode.h>
#include <sys/fs/zfs.h>

#include "zfs_prop.h"
#include "zfs_deleg.h"

#if defined(_KERNEL)
#include <sys/systm.h>
#include <util/qsort.h>
#else
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#endif

static zprop_desc_t *
zprop_get_proptable(zfs_type_t type)
{
	if (type == ZFS_TYPE_POOL)
		return (zpool_prop_get_table());
	else
		return (zfs_prop_get_table());
}

static int
zprop_get_numprops(zfs_type_t type)
{
	if (type == ZFS_TYPE_POOL)
		return (ZPOOL_NUM_PROPS);
	else
		return (ZFS_NUM_PROPS);
}

void
zprop_register_impl(int prop, const char *name, zprop_type_t type,
    uint64_t numdefault, const char *strdefault, zprop_attr_t attr,
    int objset_types, const char *values, const char *colname,
    boolean_t rightalign, boolean_t visible, const zprop_index_t *idx_tbl)
{
	zprop_desc_t *prop_tbl = zprop_get_proptable(objset_types);
	zprop_desc_t *pd;

	pd = &prop_tbl[prop];

	ASSERT(pd->pd_name == NULL || pd->pd_name == name);
	ASSERT(name != NULL);
	ASSERT(colname != NULL);

	pd->pd_name = name;
	pd->pd_propnum = prop;
	pd->pd_proptype = type;
	pd->pd_numdefault = numdefault;
	pd->pd_strdefault = strdefault;
	pd->pd_attr = attr;
	pd->pd_types = objset_types;
	pd->pd_values = values;
	pd->pd_colname = colname;
	pd->pd_rightalign = rightalign;
	pd->pd_visible = visible;
	pd->pd_table = idx_tbl;
	pd->pd_table_size = 0;
	while (idx_tbl && (idx_tbl++)->pi_name != NULL)
		pd->pd_table_size++;
}

void
zprop_register_string(int prop, const char *name, const char *def,
    zprop_attr_t attr, int objset_types, const char *values,
    const char *colname)
{
	zprop_register_impl(prop, name, PROP_TYPE_STRING, 0, def, attr,
	    objset_types, values, colname, B_FALSE, B_TRUE, NULL);

}

void
zprop_register_number(int prop, const char *name, uint64_t def,
    zprop_attr_t attr, int objset_types, const char *values,
    const char *colname)
{
	zprop_register_impl(prop, name, PROP_TYPE_NUMBER, def, NULL, attr,
	    objset_types, values, colname, B_TRUE, B_TRUE, NULL);
}

void
zprop_register_index(int prop, const char *name, uint64_t def,
    zprop_attr_t attr, int objset_types, const char *values,
    const char *colname, const zprop_index_t *idx_tbl)
{
	zprop_register_impl(prop, name, PROP_TYPE_INDEX, def, NULL, attr,
	    objset_types, values, colname, B_TRUE, B_TRUE, idx_tbl);
}

void
zprop_register_hidden(int prop, const char *name, zprop_type_t type,
    zprop_attr_t attr, int objset_types, const char *colname)
{
	zprop_register_impl(prop, name, type, 0, NULL, attr,
	    objset_types, NULL, colname, B_FALSE, B_FALSE, NULL);
}


/*
 * A comparison function we can use to order indexes into property tables.
 */
static int
zprop_compare(const void *arg1, const void *arg2)
{
	const zprop_desc_t *p1 = *((zprop_desc_t **)arg1);
	const zprop_desc_t *p2 = *((zprop_desc_t **)arg2);
	boolean_t p1ro, p2ro;

	p1ro = (p1->pd_attr == PROP_READONLY);
	p2ro = (p2->pd_attr == PROP_READONLY);

	if (p1ro == p2ro)
		return (strcmp(p1->pd_name, p2->pd_name));

	return (p1ro ? -1 : 1);
}

/*
 * Iterate over all properties in the given property table, calling back
 * into the specified function for each property. We will continue to
 * iterate until we either reach the end or the callback function returns
 * something other than ZPROP_CONT.
 */
int
zprop_iter_common(zprop_func func, void *cb, boolean_t show_all,
    boolean_t ordered, zfs_type_t type)
{
	int i, j, num_props, size, prop;
	zprop_desc_t *prop_tbl;
	zprop_desc_t **order;

	prop_tbl = zprop_get_proptable(type);
	num_props = zprop_get_numprops(type);
	size = num_props * sizeof (zprop_desc_t *);

#if defined(_KERNEL)
	order = kmem_alloc(size, KM_SLEEP);
#else
	if ((order = malloc(size)) == NULL)
		return (ZPROP_CONT);
#endif

	for (j = 0; j < num_props; j++)
		order[j] = &prop_tbl[j];

	if (ordered) {
		qsort((void *)order, num_props, sizeof (zprop_desc_t *),
		    zprop_compare);
	}

	prop = ZPROP_CONT;
	for (i = 0; i < num_props; i++) {
		if ((order[i]->pd_visible || show_all) &&
		    (func(order[i]->pd_propnum, cb) != ZPROP_CONT)) {
			prop = order[i]->pd_propnum;
			break;
		}
	}

#if defined(_KERNEL)
	kmem_free(order, size);
#else
	free(order);
#endif
	return (prop);
}

static boolean_t
propname_match(const char *p, size_t len, zprop_desc_t *prop_entry)
{
	const char *propname = prop_entry->pd_name;
#ifndef _KERNEL
	const char *colname = prop_entry->pd_colname;
	int c;
#endif

	if (len == strlen(propname) &&
	    strncmp(p, propname, len) == 0)
		return (B_TRUE);

#ifndef _KERNEL
	if (colname == NULL || len != strlen(colname))
		return (B_FALSE);

	for (c = 0; c < len; c++)
		if (p[c] != tolower(colname[c]))
			break;

	return (colname[c] == '\0');
#else
	return (B_FALSE);
#endif
}

typedef struct name_to_prop_cb {
	const char *propname;
	zprop_desc_t *prop_tbl;
} name_to_prop_cb_t;

static int
zprop_name_to_prop_cb(int prop, void *cb_data)
{
	name_to_prop_cb_t *data = cb_data;

	if (propname_match(data->propname, strlen(data->propname),
	    &data->prop_tbl[prop]))
		return (prop);

	return (ZPROP_CONT);
}

int
zprop_name_to_prop(const char *propname, zfs_type_t type)
{
	int prop;
	name_to_prop_cb_t cb_data;

	cb_data.propname = propname;
	cb_data.prop_tbl = zprop_get_proptable(type);

	prop = zprop_iter_common(zprop_name_to_prop_cb, &cb_data,
	    B_TRUE, B_FALSE, type);

	return (prop == ZPROP_CONT ? ZPROP_INVAL : prop);
}

int
zprop_string_to_index(int prop, const char *string, uint64_t *index,
    zfs_type_t type)
{
	zprop_desc_t *prop_tbl;
	const zprop_index_t *idx_tbl;
	int i;

	if (prop == ZPROP_INVAL || prop == ZPROP_CONT)
		return (-1);

	ASSERT(prop < zprop_get_numprops(type));
	prop_tbl = zprop_get_proptable(type);
	if ((idx_tbl = prop_tbl[prop].pd_table) == NULL)
		return (-1);

	for (i = 0; idx_tbl[i].pi_name != NULL; i++) {
		if (strcmp(string, idx_tbl[i].pi_name) == 0) {
			*index = idx_tbl[i].pi_value;
			return (0);
		}
	}

	return (-1);
}

int
zprop_index_to_string(int prop, uint64_t index, const char **string,
    zfs_type_t type)
{
	zprop_desc_t *prop_tbl;
	const zprop_index_t *idx_tbl;
	int i;

	if (prop == ZPROP_INVAL || prop == ZPROP_CONT)
		return (-1);

	ASSERT(prop < zprop_get_numprops(type));
	prop_tbl = zprop_get_proptable(type);
	if ((idx_tbl = prop_tbl[prop].pd_table) == NULL)
		return (-1);

	for (i = 0; idx_tbl[i].pi_name != NULL; i++) {
		if (idx_tbl[i].pi_value == index) {
			*string = idx_tbl[i].pi_name;
			return (0);
		}
	}

	return (-1);
}

/*
 * Return a random valid property value.  Used by ztest.
 */
uint64_t
zprop_random_value(int prop, uint64_t seed, zfs_type_t type)
{
	zprop_desc_t *prop_tbl;
	const zprop_index_t *idx_tbl;

	ASSERT((uint_t)prop < zprop_get_numprops(type));
	prop_tbl = zprop_get_proptable(type);
	idx_tbl = prop_tbl[prop].pd_table;

	if (idx_tbl == NULL)
		return (seed);

	return (idx_tbl[seed % prop_tbl[prop].pd_table_size].pi_value);
}

const char *
zprop_values(int prop, zfs_type_t type)
{
	zprop_desc_t *prop_tbl;

	ASSERT(prop != ZPROP_INVAL && prop != ZPROP_CONT);
	ASSERT(prop < zprop_get_numprops(type));

	prop_tbl = zprop_get_proptable(type);

	return (prop_tbl[prop].pd_values);
}

/*
 * Returns TRUE if the property applies to any of the given dataset types.
 */
boolean_t
zprop_valid_for_type(int prop, zfs_type_t type)
{
	zprop_desc_t *prop_tbl;

	if (prop == ZPROP_INVAL || prop == ZPROP_CONT)
		return (B_FALSE);

	ASSERT(prop < zprop_get_numprops(type));
	prop_tbl = zprop_get_proptable(type);
	return ((prop_tbl[prop].pd_types & type) != 0);
}

#ifndef _KERNEL

/*
 * Determines the minimum width for the column, and indicates whether it's fixed
 * or not.  Only string columns are non-fixed.
 */
size_t
zprop_width(int prop, boolean_t *fixed, zfs_type_t type)
{
	zprop_desc_t *prop_tbl, *pd;
	const zprop_index_t *idx;
	size_t ret;
	int i;

	ASSERT(prop != ZPROP_INVAL && prop != ZPROP_CONT);
	ASSERT(prop < zprop_get_numprops(type));

	prop_tbl = zprop_get_proptable(type);
	pd = &prop_tbl[prop];

	*fixed = B_TRUE;

	/*
	 * Start with the width of the column name.
	 */
	ret = strlen(pd->pd_colname);

	/*
	 * For fixed-width values, make sure the width is large enough to hold
	 * any possible value.
	 */
	switch (pd->pd_proptype) {
	case PROP_TYPE_NUMBER:
		/*
		 * The maximum length of a human-readable number is 5 characters
		 * ("20.4M", for example).
		 */
		if (ret < 5)
			ret = 5;
		/*
		 * 'creation' is handled specially because it's a number
		 * internally, but displayed as a date string.
		 */
		if (prop == ZFS_PROP_CREATION)
			*fixed = B_FALSE;
		break;
	case PROP_TYPE_INDEX:
		idx = prop_tbl[prop].pd_table;
		for (i = 0; idx[i].pi_name != NULL; i++) {
			if (strlen(idx[i].pi_name) > ret)
				ret = strlen(idx[i].pi_name);
		}
		break;

	case PROP_TYPE_STRING:
		*fixed = B_FALSE;
		break;
	}

	return (ret);
}

#endif

#if defined(_KERNEL) && defined(HAVE_SPL)
/* Common routines to initialize property tables */
EXPORT_SYMBOL(zprop_register_impl);
EXPORT_SYMBOL(zprop_register_string);
EXPORT_SYMBOL(zprop_register_number);
EXPORT_SYMBOL(zprop_register_index);
EXPORT_SYMBOL(zprop_register_hidden);

/* Common routines for zfs and zpool property management */
EXPORT_SYMBOL(zprop_iter_common);
EXPORT_SYMBOL(zprop_name_to_prop);
EXPORT_SYMBOL(zprop_string_to_index);
EXPORT_SYMBOL(zprop_index_to_string);
EXPORT_SYMBOL(zprop_random_value);
EXPORT_SYMBOL(zprop_values);
EXPORT_SYMBOL(zprop_valid_for_type);
#endif
Commit	Line	Data
34dc7c2f BB	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	/*
428870ff	22	* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
34dc7c2f BB	23	* Use is subject to license terms.
	24	*/
	25
34dc7c2f BB	26	/*
	27	* Common routines used by zfs and zpool property management.
	28	*/
	29
	30	#include <sys/zio.h>
	31	#include <sys/spa.h>
	32	#include <sys/zfs_acl.h>
	33	#include <sys/zfs_ioctl.h>
	34	#include <sys/zfs_znode.h>
	35	#include <sys/fs/zfs.h>
	36
	37	#include "zfs_prop.h"
	38	#include "zfs_deleg.h"
	39
	40	#if defined(_KERNEL)
	41	#include <sys/systm.h>
	42	#include <util/qsort.h>
	43	#else
	44	#include <stdlib.h>
	45	#include <string.h>
	46	#include <ctype.h>
	47	#endif
	48
	49	static zprop_desc_t *
	50	zprop_get_proptable(zfs_type_t type)
	51	{
	52	if (type == ZFS_TYPE_POOL)
	53	return (zpool_prop_get_table());
	54	else
	55	return (zfs_prop_get_table());
	56	}
	57
	58	static int
	59	zprop_get_numprops(zfs_type_t type)
	60	{
	61	if (type == ZFS_TYPE_POOL)
	62	return (ZPOOL_NUM_PROPS);
	63	else
	64	return (ZFS_NUM_PROPS);
	65	}
	66
	67	void
428870ff	68	zprop_register_impl(int prop, const char *name, zprop_type_t type,
34dc7c2f BB	69	uint64_t numdefault, const char *strdefault, zprop_attr_t attr,
	70	int objset_types, const char values, const char colname,
	71	boolean_t rightalign, boolean_t visible, const zprop_index_t *idx_tbl)
	72	{
	73	zprop_desc_t *prop_tbl = zprop_get_proptable(objset_types);
	74	zprop_desc_t *pd;
	75
	76	pd = &prop_tbl[prop];
	77
	78	ASSERT(pd->pd_name == NULL \|\| pd->pd_name == name);
428870ff BB	79	ASSERT(name != NULL);
428870ff BB	80	ASSERT(colname != NULL);
34dc7c2f BB	81
	82	pd->pd_name = name;
	83	pd->pd_propnum = prop;
	84	pd->pd_proptype = type;
	85	pd->pd_numdefault = numdefault;
	86	pd->pd_strdefault = strdefault;
	87	pd->pd_attr = attr;
	88	pd->pd_types = objset_types;
	89	pd->pd_values = values;
	90	pd->pd_colname = colname;
	91	pd->pd_rightalign = rightalign;
	92	pd->pd_visible = visible;
	93	pd->pd_table = idx_tbl;
428870ff BB	94	pd->pd_table_size = 0;
	95	while (idx_tbl && (idx_tbl++)->pi_name != NULL)
	96	pd->pd_table_size++;
34dc7c2f BB	97	}
	98
	99	void
428870ff	100	zprop_register_string(int prop, const char name, const char def,
34dc7c2f BB	101	zprop_attr_t attr, int objset_types, const char *values,
	102	const char *colname)
	103	{
428870ff	104	zprop_register_impl(prop, name, PROP_TYPE_STRING, 0, def, attr,
34dc7c2f BB	105	objset_types, values, colname, B_FALSE, B_TRUE, NULL);
	106
	107	}
	108
	109	void
428870ff BB	110	zprop_register_number(int prop, const char *name, uint64_t def,
	111	zprop_attr_t attr, int objset_types, const char *values,
	112	const char *colname)
34dc7c2f	113	{
428870ff	114	zprop_register_impl(prop, name, PROP_TYPE_NUMBER, def, NULL, attr,
34dc7c2f BB	115	objset_types, values, colname, B_TRUE, B_TRUE, NULL);
	116	}
	117
	118	void
428870ff BB	119	zprop_register_index(int prop, const char *name, uint64_t def,
	120	zprop_attr_t attr, int objset_types, const char *values,
	121	const char colname, const zprop_index_t idx_tbl)
34dc7c2f	122	{
428870ff	123	zprop_register_impl(prop, name, PROP_TYPE_INDEX, def, NULL, attr,
34dc7c2f BB	124	objset_types, values, colname, B_TRUE, B_TRUE, idx_tbl);
	125	}
	126
	127	void
428870ff	128	zprop_register_hidden(int prop, const char *name, zprop_type_t type,
34dc7c2f BB	129	zprop_attr_t attr, int objset_types, const char *colname)
34dc7c2f BB	130	{
428870ff	131	zprop_register_impl(prop, name, type, 0, NULL, attr,
34dc7c2f BB	132	objset_types, NULL, colname, B_FALSE, B_FALSE, NULL);
	133	}
	134
	135
	136	/*
	137	* A comparison function we can use to order indexes into property tables.
	138	*/
	139	static int
	140	zprop_compare(const void arg1, const void arg2)
	141	{
	142	const zprop_desc_t p1 = ((zprop_desc_t **)arg1);
	143	const zprop_desc_t p2 = ((zprop_desc_t **)arg2);
	144	boolean_t p1ro, p2ro;
	145
	146	p1ro = (p1->pd_attr == PROP_READONLY);
	147	p2ro = (p2->pd_attr == PROP_READONLY);
	148
	149	if (p1ro == p2ro)
	150	return (strcmp(p1->pd_name, p2->pd_name));
	151
	152	return (p1ro ? -1 : 1);
	153	}
	154
	155	/*
	156	* Iterate over all properties in the given property table, calling back
	157	* into the specified function for each property. We will continue to
	158	* iterate until we either reach the end or the callback function returns
	159	* something other than ZPROP_CONT.
	160	*/
	161	int
	162	zprop_iter_common(zprop_func func, void *cb, boolean_t show_all,
	163	boolean_t ordered, zfs_type_t type)
	164	{
d6320ddb	165	int i, j, num_props, size, prop;
34dc7c2f BB	166	zprop_desc_t *prop_tbl;
	167	zprop_desc_t **order;
	168
	169	prop_tbl = zprop_get_proptable(type);
	170	num_props = zprop_get_numprops(type);
	171	size = num_props * sizeof (zprop_desc_t *);
	172
	173	#if defined(_KERNEL)
	174	order = kmem_alloc(size, KM_SLEEP);
	175	#else
	176	if ((order = malloc(size)) == NULL)
	177	return (ZPROP_CONT);
	178	#endif
	179
d6320ddb	180	for (j = 0; j < num_props; j++)
34dc7c2f BB	181	order[j] = &prop_tbl[j];
	182
	183	if (ordered) {
	184	qsort((void )order, num_props, sizeof (zprop_desc_t ),
	185	zprop_compare);
	186	}
	187
	188	prop = ZPROP_CONT;
	189	for (i = 0; i < num_props; i++) {
	190	if ((order[i]->pd_visible \|\| show_all) &&
	191	(func(order[i]->pd_propnum, cb) != ZPROP_CONT)) {
	192	prop = order[i]->pd_propnum;
	193	break;
	194	}
	195	}
	196
	197	#if defined(_KERNEL)
	198	kmem_free(order, size);
	199	#else
	200	free(order);
	201	#endif
	202	return (prop);
	203	}
	204
	205	static boolean_t
	206	propname_match(const char p, size_t len, zprop_desc_t prop_entry)
	207	{
	208	const char *propname = prop_entry->pd_name;
	209	#ifndef _KERNEL
	210	const char *colname = prop_entry->pd_colname;
	211	int c;
34dc7c2f BB	212	#endif
	213
	214	if (len == strlen(propname) &&
	215	strncmp(p, propname, len) == 0)
	216	return (B_TRUE);
	217
	218	#ifndef _KERNEL
9babb374	219	if (colname == NULL \|\| len != strlen(colname))
34dc7c2f BB	220	return (B_FALSE);
	221
	222	for (c = 0; c < len; c++)
	223	if (p[c] != tolower(colname[c]))
	224	break;
	225
	226	return (colname[c] == '\0');
	227	#else
	228	return (B_FALSE);
	229	#endif
	230	}
	231
	232	typedef struct name_to_prop_cb {
	233	const char *propname;
	234	zprop_desc_t *prop_tbl;
	235	} name_to_prop_cb_t;
	236
	237	static int
	238	zprop_name_to_prop_cb(int prop, void *cb_data)
	239	{
	240	name_to_prop_cb_t *data = cb_data;
	241
	242	if (propname_match(data->propname, strlen(data->propname),
	243	&data->prop_tbl[prop]))
	244	return (prop);
	245
	246	return (ZPROP_CONT);
	247	}
	248
	249	int
	250	zprop_name_to_prop(const char *propname, zfs_type_t type)
	251	{
	252	int prop;
	253	name_to_prop_cb_t cb_data;
	254
	255	cb_data.propname = propname;
	256	cb_data.prop_tbl = zprop_get_proptable(type);
	257
	258	prop = zprop_iter_common(zprop_name_to_prop_cb, &cb_data,
	259	B_TRUE, B_FALSE, type);
	260
	261	return (prop == ZPROP_CONT ? ZPROP_INVAL : prop);
	262	}
	263
	264	int
	265	zprop_string_to_index(int prop, const char string, uint64_t index,
	266	zfs_type_t type)
	267	{
	268	zprop_desc_t *prop_tbl;
	269	const zprop_index_t *idx_tbl;
	270	int i;
	271
b128c09f BB	272	if (prop == ZPROP_INVAL \|\| prop == ZPROP_CONT)
	273	return (-1);
	274
	275	ASSERT(prop < zprop_get_numprops(type));
34dc7c2f BB	276	prop_tbl = zprop_get_proptable(type);
	277	if ((idx_tbl = prop_tbl[prop].pd_table) == NULL)
	278	return (-1);
	279
	280	for (i = 0; idx_tbl[i].pi_name != NULL; i++) {
	281	if (strcmp(string, idx_tbl[i].pi_name) == 0) {
	282	*index = idx_tbl[i].pi_value;
	283	return (0);
	284	}
	285	}
	286
	287	return (-1);
	288	}
	289
	290	int
	291	zprop_index_to_string(int prop, uint64_t index, const char **string,
	292	zfs_type_t type)
	293	{
	294	zprop_desc_t *prop_tbl;
	295	const zprop_index_t *idx_tbl;
	296	int i;
	297
b128c09f BB	298	if (prop == ZPROP_INVAL \|\| prop == ZPROP_CONT)
	299	return (-1);
	300
	301	ASSERT(prop < zprop_get_numprops(type));
34dc7c2f BB	302	prop_tbl = zprop_get_proptable(type);
	303	if ((idx_tbl = prop_tbl[prop].pd_table) == NULL)
	304	return (-1);
	305
	306	for (i = 0; idx_tbl[i].pi_name != NULL; i++) {
	307	if (idx_tbl[i].pi_value == index) {
	308	*string = idx_tbl[i].pi_name;
	309	return (0);
	310	}
	311	}
	312
	313	return (-1);
	314	}
	315
428870ff BB	316	/*
	317	* Return a random valid property value. Used by ztest.
	318	*/
	319	uint64_t
	320	zprop_random_value(int prop, uint64_t seed, zfs_type_t type)
	321	{
	322	zprop_desc_t *prop_tbl;
	323	const zprop_index_t *idx_tbl;
	324
	325	ASSERT((uint_t)prop < zprop_get_numprops(type));
	326	prop_tbl = zprop_get_proptable(type);
	327	idx_tbl = prop_tbl[prop].pd_table;
	328
	329	if (idx_tbl == NULL)
	330	return (seed);
	331
	332	return (idx_tbl[seed % prop_tbl[prop].pd_table_size].pi_value);
	333	}
	334
34dc7c2f BB	335	const char *
	336	zprop_values(int prop, zfs_type_t type)
	337	{
	338	zprop_desc_t *prop_tbl;
	339
b128c09f BB	340	ASSERT(prop != ZPROP_INVAL && prop != ZPROP_CONT);
	341	ASSERT(prop < zprop_get_numprops(type));
	342
34dc7c2f BB	343	prop_tbl = zprop_get_proptable(type);
	344
	345	return (prop_tbl[prop].pd_values);
	346	}
	347
	348	/*
	349	* Returns TRUE if the property applies to any of the given dataset types.
	350	*/
b128c09f	351	boolean_t
34dc7c2f BB	352	zprop_valid_for_type(int prop, zfs_type_t type)
34dc7c2f BB	353	{
b128c09f BB	354	zprop_desc_t *prop_tbl;
	355
	356	if (prop == ZPROP_INVAL \|\| prop == ZPROP_CONT)
	357	return (B_FALSE);
34dc7c2f	358
b128c09f BB	359	ASSERT(prop < zprop_get_numprops(type));
b128c09f BB	360	prop_tbl = zprop_get_proptable(type);
34dc7c2f BB	361	return ((prop_tbl[prop].pd_types & type) != 0);
	362	}
	363
	364	#ifndef _KERNEL
	365
	366	/*
	367	* Determines the minimum width for the column, and indicates whether it's fixed
	368	* or not. Only string columns are non-fixed.
	369	*/
	370	size_t
	371	zprop_width(int prop, boolean_t *fixed, zfs_type_t type)
	372	{
	373	zprop_desc_t prop_tbl, pd;
	374	const zprop_index_t *idx;
	375	size_t ret;
	376	int i;
	377
b128c09f BB	378	ASSERT(prop != ZPROP_INVAL && prop != ZPROP_CONT);
	379	ASSERT(prop < zprop_get_numprops(type));
	380
34dc7c2f BB	381	prop_tbl = zprop_get_proptable(type);
	382	pd = &prop_tbl[prop];
	383
	384	*fixed = B_TRUE;
	385
	386	/*
	387	* Start with the width of the column name.
	388	*/
	389	ret = strlen(pd->pd_colname);
	390
	391	/*
	392	* For fixed-width values, make sure the width is large enough to hold
	393	* any possible value.
	394	*/
	395	switch (pd->pd_proptype) {
	396	case PROP_TYPE_NUMBER:
	397	/*
	398	* The maximum length of a human-readable number is 5 characters
	399	* ("20.4M", for example).
	400	*/
	401	if (ret < 5)
	402	ret = 5;
	403	/*
	404	* 'creation' is handled specially because it's a number
	405	* internally, but displayed as a date string.
	406	*/
	407	if (prop == ZFS_PROP_CREATION)
	408	*fixed = B_FALSE;
	409	break;
	410	case PROP_TYPE_INDEX:
	411	idx = prop_tbl[prop].pd_table;
	412	for (i = 0; idx[i].pi_name != NULL; i++) {
	413	if (strlen(idx[i].pi_name) > ret)
	414	ret = strlen(idx[i].pi_name);
	415	}
	416	break;
	417
	418	case PROP_TYPE_STRING:
	419	*fixed = B_FALSE;
	420	break;
	421	}
	422
	423	return (ret);
	424	}
	425
	426	#endif
c28b2279 BB	427
	428	#if defined(_KERNEL) && defined(HAVE_SPL)
	429	/* Common routines to initialize property tables */
	430	EXPORT_SYMBOL(zprop_register_impl);
	431	EXPORT_SYMBOL(zprop_register_string);
	432	EXPORT_SYMBOL(zprop_register_number);
	433	EXPORT_SYMBOL(zprop_register_index);
	434	EXPORT_SYMBOL(zprop_register_hidden);
	435
	436	/* Common routines for zfs and zpool property management */
	437	EXPORT_SYMBOL(zprop_iter_common);
	438	EXPORT_SYMBOL(zprop_name_to_prop);
	439	EXPORT_SYMBOL(zprop_string_to_index);
	440	EXPORT_SYMBOL(zprop_index_to_string);
	441	EXPORT_SYMBOL(zprop_random_value);
	442	EXPORT_SYMBOL(zprop_values);
	443	EXPORT_SYMBOL(zprop_valid_for_type);
	444	#endif