| /* |
| * 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 <strings.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); |
| } |
| |
| /* |
| * 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); |
| } |
| |
| /* |
| * Return 1 if "str" is a number string, 0 otherwise. Works for integer and |
| * floating point numbers. |
| */ |
| int |
| isnumber(char *str) |
| { |
| for (; *str; str++) |
| if (!(isdigit(*str) || (*str == '.'))) |
| return (0); |
| |
| return (1); |
| } |
| |
| /* |
| * 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)); |
| } |