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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #if defined(_KERNEL) 31 #include <sys/null.h> 32 #endif /* _KERNEL */ 33 34 #if defined(_KERNEL) && !defined(_BOOT) 35 #include <sys/errno.h> 36 #else /* _KERNEL && !_BOOT */ 37 #if !defined(_BOOT) && !defined(_KMDB) && !defined(_STANDALONE) 38 #include "lint.h" 39 #endif /* !_BOOT && !_KMDB && !_STANDALONE */ 40 #if defined(_STANDALONE) 41 #include <sys/cdefs.h> 42 #include <stand.h> 43 #include <limits.h> 44 45 typedef unsigned long long u_longlong_t; 46 #else 47 #include <errno.h> 48 #include <ctype.h> 49 #include <limits.h> 50 #include <stdlib.h> 51 #endif /* _STANDALONE */ 52 #endif /* _KERNEL && !_BOOT */ 53 #include "strtolctype.h" 54 #include <sys/types.h> 55 56 #if defined(_KERNEL) && !defined(_BOOT) 57 int 58 ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *result) 59 #else /* _KERNEL && !_BOOT */ 60 u_longlong_t 61 strtoull(const char *str, char **nptr, int base) 62 #endif /* _KERNEL && !_BOOT */ 63 { 64 u_longlong_t val; 65 int c; 66 int xx; 67 int neg = 0; 68 u_longlong_t multmax; 69 const char **ptr = (const char **)nptr; 70 const unsigned char *ustr = (const unsigned char *)str; 71 72 if (ptr != NULL) 73 *ptr = (char *)ustr; /* in case no number is formed */ 74 if (base < 0 || base > MBASE || base == 1) { 75 /* base is invalid -- should be a fatal error */ 76 #if defined(_KERNEL) && !defined(_BOOT) 77 return (EINVAL); 78 #else /* _KERNEL && !_BOOT */ 79 errno = EINVAL; 80 return (0); 81 #endif /* _KERNEL && !_BOOT */ 82 } 83 if (!isalnum(c = *ustr)) { 84 while (isspace(c)) 85 c = *++ustr; 86 switch (c) { 87 case '-': 88 neg++; 89 /* FALLTHROUGH */ 90 case '+': 91 c = *++ustr; 92 } 93 } 94 if (base == 0) { 95 if (c != '0') 96 base = 10; 97 else if (ustr[1] == 'x' || ustr[1] == 'X') 98 base = 16; 99 else 100 base = 8; 101 } 102 /* 103 * for any base > 10, the digits incrementally following 104 * 9 are assumed to be "abc...z" or "ABC...Z" 105 */ 106 if (!lisalnum(c) || (xx = DIGIT(c)) >= base) { 107 /* no number formed */ 108 #if defined(_KERNEL) && !defined(_BOOT) 109 return (EINVAL); 110 #else /* _KERNEL && !_BOOT */ 111 return (0); 112 #endif /* _KERNEL && !_BOOT */ 113 } 114 if (base == 16 && c == '0' && (ustr[1] == 'x' || ustr[1] == 'X') && 115 isxdigit(ustr[2])) 116 c = *(ustr += 2); /* skip over leading "0x" or "0X" */ 117 118 multmax = ULLONG_MAX / (u_longlong_t)base; 119 val = DIGIT(c); 120 for (c = *++ustr; lisalnum(c) && (xx = DIGIT(c)) < base; ) { 121 if (val > multmax) 122 goto overflow; 123 val *= base; 124 if (ULLONG_MAX - val < (unsigned long long)xx) 125 goto overflow; 126 val += xx; 127 c = *++ustr; 128 } 129 if (ptr != NULL) 130 *ptr = (char *)ustr; 131 #if defined(_KERNEL) && !defined(_BOOT) 132 *result = neg ? -val : val; 133 return (0); 134 #else /* _KERNEL && !_BOOT */ 135 return (neg ? -val : val); 136 #endif /* _KERNEL && !_BOOT */ 137 138 overflow: 139 for (c = *++ustr; lisalnum(c) && (xx = DIGIT(c)) < base; (c = *++ustr)) 140 ; 141 if (ptr != NULL) 142 *ptr = (char *)ustr; 143 #if defined(_KERNEL) && !defined(_BOOT) 144 return (ERANGE); 145 #else /* _KERNEL && !_BOOT */ 146 errno = ERANGE; 147 return (ULLONG_MAX); 148 #endif /* _KERNEL && !_BOOT */ 149 } 150