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) && !defined(_BOOT) 31 #include <sys/null.h> 32 #include <sys/errno.h> 33 #else /* _KERNEL && !_BOOT */ 34 #if !defined(_BOOT) && !defined(_KMDB) && !defined(_STANDALONE) 35 #include "lint.h" 36 #endif /* !_BOOT && !_KMDB && !_STANDALONE */ 37 #if defined(_STANDALONE) 38 #include <sys/cdefs.h> 39 #include <stand.h> 40 #include <limits.h> 41 42 typedef unsigned long long u_longlong_t; 43 #else 44 #include <errno.h> 45 #include <ctype.h> 46 #include <limits.h> 47 #include <stdlib.h> 48 #endif /* _STANDALONE */ 49 #endif /* _KERNEL && !_BOOT */ 50 #include "strtolctype.h" 51 #include <sys/types.h> 52 53 #if defined(_KERNEL) && !defined(_BOOT) 54 int 55 ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *result) 56 #else /* _KERNEL && !_BOOT */ 57 u_longlong_t 58 strtoull(const char *str, char **nptr, int base) 59 #endif /* _KERNEL && !_BOOT */ 60 { 61 u_longlong_t val; 62 int c; 63 int xx; 64 int neg = 0; 65 u_longlong_t multmax; 66 const char **ptr = (const char **)nptr; 67 const unsigned char *ustr = (const unsigned char *)str; 68 69 if (ptr != NULL) 70 *ptr = (char *)ustr; /* in case no number is formed */ 71 if (base < 0 || base > MBASE || base == 1) { 72 /* base is invalid -- should be a fatal error */ 73 #if defined(_KERNEL) && !defined(_BOOT) 74 return (EINVAL); 75 #else /* _KERNEL && !_BOOT */ 76 errno = EINVAL; 77 return (0); 78 #endif /* _KERNEL && !_BOOT */ 79 } 80 if (!isalnum(c = *ustr)) { 81 while (isspace(c)) 82 c = *++ustr; 83 switch (c) { 84 case '-': 85 neg++; 86 /* FALLTHROUGH */ 87 case '+': 88 c = *++ustr; 89 } 90 } 91 if (base == 0) { 92 if (c != '0') 93 base = 10; 94 else if (ustr[1] == 'x' || ustr[1] == 'X') 95 base = 16; 96 else 97 base = 8; 98 } 99 /* 100 * for any base > 10, the digits incrementally following 101 * 9 are assumed to be "abc...z" or "ABC...Z" 102 */ 103 if (!lisalnum(c) || (xx = DIGIT(c)) >= base) { 104 /* no number formed */ 105 #if defined(_KERNEL) && !defined(_BOOT) 106 return (EINVAL); 107 #else /* _KERNEL && !_BOOT */ 108 return (0); 109 #endif /* _KERNEL && !_BOOT */ 110 } 111 if (base == 16 && c == '0' && (ustr[1] == 'x' || ustr[1] == 'X') && 112 isxdigit(ustr[2])) 113 c = *(ustr += 2); /* skip over leading "0x" or "0X" */ 114 115 multmax = ULLONG_MAX / (u_longlong_t)base; 116 val = DIGIT(c); 117 for (c = *++ustr; lisalnum(c) && (xx = DIGIT(c)) < base; ) { 118 if (val > multmax) 119 goto overflow; 120 val *= base; 121 if (ULLONG_MAX - val < (unsigned long long)xx) 122 goto overflow; 123 val += xx; 124 c = *++ustr; 125 } 126 if (ptr != NULL) 127 *ptr = (char *)ustr; 128 #if defined(_KERNEL) && !defined(_BOOT) 129 *result = neg ? -val : val; 130 return (0); 131 #else /* _KERNEL && !_BOOT */ 132 return (neg ? -val : val); 133 #endif /* _KERNEL && !_BOOT */ 134 135 overflow: 136 for (c = *++ustr; lisalnum(c) && (xx = DIGIT(c)) < base; (c = *++ustr)) 137 ; 138 if (ptr != NULL) 139 *ptr = (char *)ustr; 140 #if defined(_KERNEL) && !defined(_BOOT) 141 return (ERANGE); 142 #else /* _KERNEL && !_BOOT */ 143 errno = ERANGE; 144 return (ULLONG_MAX); 145 #endif /* _KERNEL && !_BOOT */ 146 } 147