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 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <errno.h> 27 #include <libgen.h> 28 #include <libintl.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <strings.h> 32 #include <ctype.h> 33 #include <sys/sysmacros.h> 34 35 #include "zpool_util.h" 36 37 /* 38 * Utility function to guarantee malloc() success. 39 */ 40 void * 41 safe_malloc(size_t size) 42 { 43 void *data; 44 45 if ((data = calloc(1, size)) == NULL) { 46 (void) fprintf(stderr, "internal error: out of memory\n"); 47 exit(1); 48 } 49 50 return (data); 51 } 52 53 /* 54 * Display an out of memory error message and abort the current program. 55 */ 56 void 57 zpool_no_memory(void) 58 { 59 assert(errno == ENOMEM); 60 (void) fprintf(stderr, 61 gettext("internal error: out of memory\n")); 62 exit(1); 63 } 64 65 /* 66 * Return the number of logs in supplied nvlist 67 */ 68 uint_t 69 num_logs(nvlist_t *nv) 70 { 71 uint_t nlogs = 0; 72 uint_t c, children; 73 nvlist_t **child; 74 75 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 76 &child, &children) != 0) 77 return (0); 78 79 for (c = 0; c < children; c++) { 80 uint64_t is_log = B_FALSE; 81 82 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 83 &is_log); 84 if (is_log) 85 nlogs++; 86 } 87 return (nlogs); 88 } 89 90 /* Find the max element in an array of uint64_t values */ 91 uint64_t 92 array64_max(uint64_t array[], unsigned int len) 93 { 94 uint64_t max = 0; 95 int i; 96 for (i = 0; i < len; i++) 97 max = MAX(max, array[i]); 98 99 return (max); 100 } 101 102 /* 103 * Return 1 if "str" is a number string, 0 otherwise. Works for integer and 104 * floating point numbers. 105 */ 106 int 107 isnumber(char *str) 108 { 109 for (; *str; str++) 110 if (!(isdigit(*str) || (*str == '.'))) 111 return (0); 112 113 return (1); 114 } 115