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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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <errno.h>
#include <libgen.h>
#include <libintl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "zpool_util.h"
/*
* Utility function to guarantee malloc() success.
*/
void *
safe_malloc(size_t size)
{
void *data;
if ((data = calloc(1, size)) == NULL) {
(void) fprintf(stderr, "internal error: out of memory\n");
exit(1);
}
return (data);
}
/*
* Utility function to guarantee realloc() success.
*/
void *
safe_realloc(void *from, size_t size)
{
void *data;
if ((data = realloc(from, size)) == NULL) {
(void) fprintf(stderr, "internal error: out of memory\n");
exit(1);
}
return (data);
}
/*
* Display an out of memory error message and abort the current program.
*/
void
zpool_no_memory(void)
{
assert(errno == ENOMEM);
(void) fprintf(stderr,
gettext("internal error: out of memory\n"));
exit(1);
}
/*
* Return the number of logs in supplied nvlist
*/
uint_t
num_logs(nvlist_t *nv)
{
uint_t nlogs = 0;
uint_t c, children;
nvlist_t **child;
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
&child, &children) != 0)
return (0);
for (c = 0; c < children; c++) {
uint64_t is_log = B_FALSE;
(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
&is_log);
if (is_log)
nlogs++;
}
return (nlogs);
}
/* Find the max element in an array of uint64_t values */
uint64_t
array64_max(uint64_t array[], unsigned int len)
{
uint64_t max = 0;
int i;
for (i = 0; i < len; i++)
max = MAX(max, array[i]);
return (max);
}
/*
* Find highest one bit set.
* Returns bit number + 1 of highest bit that is set, otherwise returns 0.
*/
int
highbit64(uint64_t i)
{
if (i == 0)
return (0);
return (NBBY * sizeof (uint64_t) - __builtin_clzll(i));
}
/*
* Find lowest one bit set.
* Returns bit number + 1 of lowest bit that is set, otherwise returns 0.
*/
int
lowbit64(uint64_t i)
{
if (i == 0)
return (0);
return (__builtin_ffsll(i));
}
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