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.
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.
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]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
34 #include "zpool_util.h"
37 * Utility function to guarantee malloc() success.
40 safe_malloc(size_t size)
44 if ((data = calloc(1, size)) == NULL) {
45 (void) fprintf(stderr, "internal error: out of memory\n");
53 * Display an out of memory error message and abort the current program.
58 assert(errno == ENOMEM);
59 (void) fprintf(stderr,
60 gettext("internal error: out of memory\n"));
65 * Return the number of logs in supplied nvlist
68 num_logs(nvlist_t *nv)
74 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
75 &child, &children) != 0)
78 for (c = 0; c < children; c++) {
79 uint64_t is_log = B_FALSE;
81 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
89 /* Find the max element in an array of uint64_t values */
91 array64_max(uint64_t array[], unsigned int len)
95 for (i = 0; i < len; i++)
96 max = MAX(max, array[i]);
102 * Return 1 if "str" is a number string, 0 otherwise. Works for integer and
103 * floating point numbers.
109 if (!(isdigit(*str) || (*str == '.')))
116 * Find highest one bit set.
117 * Returns bit number + 1 of highest bit that is set, otherwise returns 0.
120 highbit64(uint64_t i)
125 return (NBBY * sizeof (uint64_t) - __builtin_clzll(i));
129 * Find lowest one bit set.
130 * Returns bit number + 1 of lowest bit that is set, otherwise returns 0.
138 return (__builtin_ffsll(i));