1 files changed, 406 insertions, 0 deletions
diff --git a/module/zcommon/zprop_common.c b/module/zcommon/zprop_common.c
new file mode 100644
index 000000000..bd267e2e6
--- /dev/null
+++ b/module/zcommon/zprop_common.c
@@ -0,0 +1,406 @@
+/*
+ * 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 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * 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
+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);
+
+	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;
+}
+
+void
+register_string(int prop, const char *name, const char *def,
+    zprop_attr_t attr, int objset_types, const char *values,
+    const char *colname)
+{
+	register_impl(prop, name, PROP_TYPE_STRING, 0, def, attr,
+	    objset_types, values, colname, B_FALSE, B_TRUE, NULL);
+
+}
+
+void
+register_number(int prop, const char *name, uint64_t def, zprop_attr_t attr,
+    int objset_types, const char *values, const char *colname)
+{
+	register_impl(prop, name, PROP_TYPE_NUMBER, def, NULL, attr,
+	    objset_types, values, colname, B_TRUE, B_TRUE, NULL);
+}
+
+void
+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)
+{
+	register_impl(prop, name, PROP_TYPE_INDEX, def, NULL, attr,
+	    objset_types, values, colname, B_TRUE, B_TRUE, idx_tbl);
+}
+
+void
+register_hidden(int prop, const char *name, zprop_type_t type,
+    zprop_attr_t attr, int objset_types, const char *colname)
+{
+	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, 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 (int 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;
+
+	if (colname == NULL)
+		return (B_FALSE);
+#endif
+
+	if (len == strlen(propname) &&
+	    strncmp(p, propname, len) == 0)
+		return (B_TRUE);
+
+#ifndef _KERNEL
+	if (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);
+}
+
+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