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 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "lint.h" 30 #include "mtlib.h" 31 #include "mbstatet.h" 32 #include "file64.h" 33 #include <sys/types.h> 34 #include <stdio.h> 35 #include <wchar.h> 36 #include <thread.h> 37 #include <synch.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include "libc.h" 41 #include "stdiom.h" 42 #include "mse.h" 43 44 /* 45 * DESCRIPTION: 46 * This function sets the error indicator for the specified stream. 47 * This is a private API for the L10N method functions, especially 48 * for fgetwc(). 49 * 50 * The stream needs to have been properly locked. Usually, the wrapper 51 * function of fgetwc() locks the stream. 52 */ 53 void 54 __fseterror_u(FILE *iop) 55 { 56 iop->_flag |= _IOERR; 57 } 58 59 /* 60 * DESCRIPTION: 61 * This function/macro gets the orientation bound to the specified iop. 62 * 63 * RETURNS: 64 * _WC_MODE if iop has been bound to Wide orientation 65 * _BYTE_MODE if iop has been bound to Byte orientation 66 * _NO_MODE if iop has been bound to neither Wide nor Byte 67 */ 68 _IOP_orientation_t 69 _getorientation(FILE *iop) 70 { 71 if (GET_BYTE_MODE(iop)) 72 return (_BYTE_MODE); 73 else if (GET_WC_MODE(iop)) 74 return (_WC_MODE); 75 76 return (_NO_MODE); 77 } 78 79 /* 80 * DESCRIPTION: 81 * This function/macro sets the orientation to the specified iop. 82 * 83 * INPUT: 84 * flag may take one of the following: 85 * _WC_MODE Wide orientation 86 * _BYTE_MODE Byte orientation 87 * _NO_MODE Unoriented 88 */ 89 void 90 _setorientation(FILE *iop, _IOP_orientation_t mode) 91 { 92 switch (mode) { 93 case _NO_MODE: 94 CLEAR_BYTE_MODE(iop); 95 CLEAR_WC_MODE(iop); 96 break; 97 case _BYTE_MODE: 98 CLEAR_WC_MODE(iop); 99 SET_BYTE_MODE(iop); 100 break; 101 case _WC_MODE: 102 CLEAR_BYTE_MODE(iop); 103 SET_WC_MODE(iop); 104 break; 105 } 106 } 107 108 static mbstate_t **__top_mbstates = NULL; 109 static mutex_t __top_mbstates_lock = DEFAULTMUTEX; 110 111 void 112 _clear_internal_mbstate(void) 113 { 114 int i; 115 116 lmutex_lock(&__top_mbstates_lock); 117 if (__top_mbstates) { 118 for (i = 0; i <= _MAX_MB_FUNC; i++) { 119 if (*(__top_mbstates + i)) { 120 lfree(*(__top_mbstates + i), 121 sizeof (mbstate_t)); 122 } 123 } 124 lfree(__top_mbstates, 125 (_MAX_MB_FUNC + 1) * sizeof (mbstate_t *)); 126 __top_mbstates = NULL; 127 } 128 lmutex_unlock(&__top_mbstates_lock); 129 } 130 131 mbstate_t * 132 _get_internal_mbstate(int item) 133 { 134 if (item < 0 || item > _MAX_MB_FUNC) 135 return (NULL); 136 137 lmutex_lock(&__top_mbstates_lock); 138 if (__top_mbstates == NULL) { 139 __top_mbstates = 140 lmalloc((_MAX_MB_FUNC + 1) * sizeof (mbstate_t *)); 141 if (__top_mbstates == NULL) { 142 lmutex_unlock(&__top_mbstates_lock); 143 return (NULL); 144 } 145 *(__top_mbstates + item) = lmalloc(sizeof (mbstate_t)); 146 if (*(__top_mbstates + item) == NULL) { 147 lmutex_unlock(&__top_mbstates_lock); 148 return (NULL); 149 } 150 lmutex_unlock(&__top_mbstates_lock); 151 return (*(__top_mbstates + item)); 152 } 153 if (*(__top_mbstates + item) == NULL) { 154 *(__top_mbstates + item) = lmalloc(sizeof (mbstate_t)); 155 if (*(__top_mbstates + item) == NULL) { 156 lmutex_unlock(&__top_mbstates_lock); 157 return (NULL); 158 } 159 } 160 lmutex_unlock(&__top_mbstates_lock); 161 return (*(__top_mbstates + item)); 162 } 163 164 /* 165 * From page 32 of XSH5 166 * Once a wide-character I/O function has been applied 167 * to a stream without orientation, the stream becomes 168 * wide-orientated. Similarly, once a byte I/O function 169 * has been applied to a stream without orientation, 170 * the stream becomes byte-orientated. Only a call to 171 * the freopen() function or the fwide() function can 172 * otherwise alter the orientation of a stream. 173 */ 174 175 /* 176 * void 177 * _set_orientation_byte(FILE *iop) 178 * 179 * Note: this is now implemented as macro __SET_ORIENTATION_BYTE() 180 * (in libc/inc/mse.h) for performance improvement. 181 */ 182 183 /* Returns the value of 'ps->__nconsumed' */ 184 char 185 __mbst_get_nconsumed(const mbstate_t *ps) 186 { 187 return (ps->__nconsumed); 188 } 189 190 /* Sets 'n' to 'ps->__nconsumed' */ 191 void 192 __mbst_set_nconsumed(mbstate_t *ps, char n) 193 { 194 ps->__nconsumed = n; 195 } 196 197 /* Copies 'len' bytes from '&ps->__consumed[index]' to 'str' */ 198 int 199 __mbst_get_consumed_array(const mbstate_t *ps, char *str, 200 size_t index, size_t len) 201 { 202 if ((index + len) > 8) { 203 /* The max size of __consumed[] is 8 */ 204 return (-1); 205 } 206 (void) memcpy((void *)str, (const void *)&ps->__consumed[index], len); 207 return (0); 208 } 209 210 /* Copies 'len' bytes from 'str' to '&ps->__consumed[index]' */ 211 int 212 __mbst_set_consumed_array(mbstate_t *ps, const char *str, 213 size_t index, size_t len) 214 { 215 if ((index + len) > 8) { 216 /* The max size of __consumed[] is 8 */ 217 return (-1); 218 } 219 (void) memcpy((void *)&ps->__consumed[index], (const void *)str, len); 220 return (0); 221 } 222 223 /* Returns 'ps->__lc_locale' */ 224 void * 225 __mbst_get_locale(const mbstate_t *ps) 226 { 227 return (ps->__lc_locale); 228 } 229 230 /* Sets 'loc' to 'ps->__lc_locale' */ 231 void 232 __mbst_set_locale(mbstate_t *ps, const void *loc) 233 { 234 ps->__lc_locale = (void *)loc; 235 } 236