msdosfs_conv.c revision 120492
1/* $FreeBSD: head/sys/fs/msdosfs/msdosfs_conv.c 120492 2003-09-26 20:26:25Z fjoe $ */ 2/* $NetBSD: msdosfs_conv.c,v 1.25 1997/11/17 15:36:40 ws Exp $ */ 3 4/*- 5 * Copyright (C) 1995, 1997 Wolfgang Solfrank. 6 * Copyright (C) 1995, 1997 TooLs GmbH. 7 * All rights reserved. 8 * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by TooLs GmbH. 21 * 4. The name of TooLs GmbH may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 30 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35/* 36 * Written by Paul Popelka (paulp@uts.amdahl.com) 37 * 38 * You can do anything you want with this software, just don't say you wrote 39 * it, and don't remove this notice. 40 * 41 * This software is provided "as is". 42 * 43 * The author supplies this software to be publicly redistributed on the 44 * understanding that the author is not responsible for the correct 45 * functioning of this software in any circumstances and is not liable for 46 * any damages caused by this software. 47 * 48 * October 1992 49 */ 50 51/* 52 * System include files. 53 */ 54#include <sys/param.h> 55#include <sys/time.h> 56#include <sys/kernel.h> /* defines tz */ 57#include <sys/systm.h> 58#include <machine/clock.h> 59#include <sys/dirent.h> 60#include <sys/iconv.h> 61#include <sys/mount.h> 62#include <sys/malloc.h> 63 64extern struct iconv_functions *msdosfs_iconv; 65 66/* 67 * MSDOSFS include files. 68 */ 69#include <fs/msdosfs/bpb.h> 70#include <fs/msdosfs/msdosfsmount.h> 71#include <fs/msdosfs/direntry.h> 72 73/* 74 * Total number of days that have passed for each month in a regular year. 75 */ 76static u_short regyear[] = { 77 31, 59, 90, 120, 151, 181, 78 212, 243, 273, 304, 334, 365 79}; 80 81/* 82 * Total number of days that have passed for each month in a leap year. 83 */ 84static u_short leapyear[] = { 85 31, 60, 91, 121, 152, 182, 86 213, 244, 274, 305, 335, 366 87}; 88 89/* 90 * Variables used to remember parts of the last time conversion. Maybe we 91 * can avoid a full conversion. 92 */ 93static u_long lasttime; 94static u_long lastday; 95static u_short lastddate; 96static u_short lastdtime; 97 98static int mbsadjpos(const char **, int, int, int, int, void *handle); 99static u_int16_t dos2unixchr(const u_char **, size_t *, int, struct msdosfsmount *); 100static u_int16_t unix2doschr(const u_char **, size_t *, struct msdosfsmount *); 101static u_int16_t win2unixchr(u_int16_t, struct msdosfsmount *); 102static u_int16_t unix2winchr(const u_char **, size_t *, int, struct msdosfsmount *); 103 104struct mbnambuf { 105 char * p; 106 size_t n; 107}; 108static struct mbnambuf subent[WIN_MAXSUBENTRIES]; 109 110/* 111 * Convert the unix version of time to dos's idea of time to be used in 112 * file timestamps. The passed in unix time is assumed to be in GMT. 113 */ 114void 115unix2dostime(tsp, ddp, dtp, dhp) 116 struct timespec *tsp; 117 u_int16_t *ddp; 118 u_int16_t *dtp; 119 u_int8_t *dhp; 120{ 121 u_long t; 122 u_long days; 123 u_long inc; 124 u_long year; 125 u_long month; 126 u_short *months; 127 128 /* 129 * If the time from the last conversion is the same as now, then 130 * skip the computations and use the saved result. 131 */ 132 t = tsp->tv_sec - (tz_minuteswest * 60) 133 - (wall_cmos_clock ? adjkerntz : 0); 134 /* - daylight savings time correction */ 135 t &= ~1; 136 if (lasttime != t) { 137 lasttime = t; 138 lastdtime = (((t / 2) % 30) << DT_2SECONDS_SHIFT) 139 + (((t / 60) % 60) << DT_MINUTES_SHIFT) 140 + (((t / 3600) % 24) << DT_HOURS_SHIFT); 141 142 /* 143 * If the number of days since 1970 is the same as the last 144 * time we did the computation then skip all this leap year 145 * and month stuff. 146 */ 147 days = t / (24 * 60 * 60); 148 if (days != lastday) { 149 lastday = days; 150 for (year = 1970;; year++) { 151 inc = year & 0x03 ? 365 : 366; 152 if (days < inc) 153 break; 154 days -= inc; 155 } 156 months = year & 0x03 ? regyear : leapyear; 157 for (month = 0; days >= months[month]; month++) 158 ; 159 if (month > 0) 160 days -= months[month - 1]; 161 lastddate = ((days + 1) << DD_DAY_SHIFT) 162 + ((month + 1) << DD_MONTH_SHIFT); 163 /* 164 * Remember dos's idea of time is relative to 1980. 165 * unix's is relative to 1970. If somehow we get a 166 * time before 1980 then don't give totally crazy 167 * results. 168 */ 169 if (year > 1980) 170 lastddate += (year - 1980) << DD_YEAR_SHIFT; 171 } 172 } 173 if (dtp) 174 *dtp = lastdtime; 175 if (dhp) 176 *dhp = (tsp->tv_sec & 1) * 100 + tsp->tv_nsec / 10000000; 177 178 *ddp = lastddate; 179} 180 181/* 182 * The number of seconds between Jan 1, 1970 and Jan 1, 1980. In that 183 * interval there were 8 regular years and 2 leap years. 184 */ 185#define SECONDSTO1980 (((8 * 365) + (2 * 366)) * (24 * 60 * 60)) 186 187static u_short lastdosdate; 188static u_long lastseconds; 189 190/* 191 * Convert from dos' idea of time to unix'. This will probably only be 192 * called from the stat(), and fstat() system calls and so probably need 193 * not be too efficient. 194 */ 195void 196dos2unixtime(dd, dt, dh, tsp) 197 u_int dd; 198 u_int dt; 199 u_int dh; 200 struct timespec *tsp; 201{ 202 u_long seconds; 203 u_long month; 204 u_long year; 205 u_long days; 206 u_short *months; 207 208 if (dd == 0) { 209 /* 210 * Uninitialized field, return the epoch. 211 */ 212 tsp->tv_sec = 0; 213 tsp->tv_nsec = 0; 214 return; 215 } 216 seconds = (((dt & DT_2SECONDS_MASK) >> DT_2SECONDS_SHIFT) << 1) 217 + ((dt & DT_MINUTES_MASK) >> DT_MINUTES_SHIFT) * 60 218 + ((dt & DT_HOURS_MASK) >> DT_HOURS_SHIFT) * 3600 219 + dh / 100; 220 /* 221 * If the year, month, and day from the last conversion are the 222 * same then use the saved value. 223 */ 224 if (lastdosdate != dd) { 225 lastdosdate = dd; 226 days = 0; 227 year = (dd & DD_YEAR_MASK) >> DD_YEAR_SHIFT; 228 days = year * 365; 229 days += year / 4 + 1; /* add in leap days */ 230 if ((year & 0x03) == 0) 231 days--; /* if year is a leap year */ 232 months = year & 0x03 ? regyear : leapyear; 233 month = (dd & DD_MONTH_MASK) >> DD_MONTH_SHIFT; 234 if (month < 1 || month > 12) { 235 printf("dos2unixtime(): month value out of range (%ld)\n", 236 month); 237 month = 1; 238 } 239 if (month > 1) 240 days += months[month - 2]; 241 days += ((dd & DD_DAY_MASK) >> DD_DAY_SHIFT) - 1; 242 lastseconds = (days * 24 * 60 * 60) + SECONDSTO1980; 243 } 244 tsp->tv_sec = seconds + lastseconds + (tz_minuteswest * 60) 245 + adjkerntz; 246 /* + daylight savings time correction */ 247 tsp->tv_nsec = (dh % 100) * 10000000; 248} 249 250/* 251 * 0 - character disallowed in long file name. 252 * 1 - character should be replaced by '_' in DOS file name, 253 * and generation number inserted. 254 * 2 - character ('.' and ' ') should be skipped in DOS file name, 255 * and generation number inserted. 256 */ 257static u_char 258unix2dos[256] = { 259/* iso8859-1 -> cp850 */ 260 0, 0, 0, 0, 0, 0, 0, 0, /* 00-07 */ 261 0, 0, 0, 0, 0, 0, 0, 0, /* 08-0f */ 262 0, 0, 0, 0, 0, 0, 0, 0, /* 10-17 */ 263 0, 0, 0, 0, 0, 0, 0, 0, /* 18-1f */ 264 2, 0x21, 0, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */ 265 0x28, 0x29, 0, 1, 1, 0x2d, 2, 0, /* 28-2f */ 266 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */ 267 0x38, 0x39, 0, 1, 0, 1, 0, 0, /* 38-3f */ 268 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 40-47 */ 269 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 48-4f */ 270 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 50-57 */ 271 0x58, 0x59, 0x5a, 1, 0, 1, 0x5e, 0x5f, /* 58-5f */ 272 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 60-67 */ 273 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 68-6f */ 274 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 70-77 */ 275 0x58, 0x59, 0x5a, 0x7b, 0, 0x7d, 0x7e, 0, /* 78-7f */ 276 0, 0, 0, 0, 0, 0, 0, 0, /* 80-87 */ 277 0, 0, 0, 0, 0, 0, 0, 0, /* 88-8f */ 278 0, 0, 0, 0, 0, 0, 0, 0, /* 90-97 */ 279 0, 0, 0, 0, 0, 0, 0, 0, /* 98-9f */ 280 0, 0xad, 0xbd, 0x9c, 0xcf, 0xbe, 0xdd, 0xf5, /* a0-a7 */ 281 0xf9, 0xb8, 0xa6, 0xae, 0xaa, 0xf0, 0xa9, 0xee, /* a8-af */ 282 0xf8, 0xf1, 0xfd, 0xfc, 0xef, 0xe6, 0xf4, 0xfa, /* b0-b7 */ 283 0xf7, 0xfb, 0xa7, 0xaf, 0xac, 0xab, 0xf3, 0xa8, /* b8-bf */ 284 0xb7, 0xb5, 0xb6, 0xc7, 0x8e, 0x8f, 0x92, 0x80, /* c0-c7 */ 285 0xd4, 0x90, 0xd2, 0xd3, 0xde, 0xd6, 0xd7, 0xd8, /* c8-cf */ 286 0xd1, 0xa5, 0xe3, 0xe0, 0xe2, 0xe5, 0x99, 0x9e, /* d0-d7 */ 287 0x9d, 0xeb, 0xe9, 0xea, 0x9a, 0xed, 0xe8, 0xe1, /* d8-df */ 288 0xb7, 0xb5, 0xb6, 0xc7, 0x8e, 0x8f, 0x92, 0x80, /* e0-e7 */ 289 0xd4, 0x90, 0xd2, 0xd3, 0xde, 0xd6, 0xd7, 0xd8, /* e8-ef */ 290 0xd1, 0xa5, 0xe3, 0xe0, 0xe2, 0xe5, 0x99, 0xf6, /* f0-f7 */ 291 0x9d, 0xeb, 0xe9, 0xea, 0x9a, 0xed, 0xe8, 0x98, /* f8-ff */ 292}; 293 294static u_char 295dos2unix[256] = { 296/* cp850 -> iso8859-1 */ 297 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, /* 00-07 */ 298 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, /* 08-0f */ 299 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, /* 10-17 */ 300 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, /* 18-1f */ 301 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */ 302 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 28-2f */ 303 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */ 304 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 38-3f */ 305 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 40-47 */ 306 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 48-4f */ 307 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 50-57 */ 308 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 58-5f */ 309 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 60-67 */ 310 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 68-6f */ 311 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 70-77 */ 312 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 78-7f */ 313 0xc7, 0xfc, 0xe9, 0xe2, 0xe4, 0xe0, 0xe5, 0xe7, /* 80-87 */ 314 0xea, 0xeb, 0xe8, 0xef, 0xee, 0xec, 0xc4, 0xc5, /* 88-8f */ 315 0xc9, 0xe6, 0xc6, 0xf4, 0xf6, 0xf2, 0xfb, 0xf9, /* 90-97 */ 316 0xff, 0xd6, 0xdc, 0xf8, 0xa3, 0xd8, 0xd7, 0x3f, /* 98-9f */ 317 0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xaa, 0xba, /* a0-a7 */ 318 0xbf, 0xae, 0xac, 0xbd, 0xbc, 0xa1, 0xab, 0xbb, /* a8-af */ 319 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0xc1, 0xc2, 0xc0, /* b0-b7 */ 320 0xa9, 0x3f, 0x3f, 0x3f, 0x3f, 0xa2, 0xa5, 0x3f, /* b8-bf */ 321 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0xe3, 0xc3, /* c0-c7 */ 322 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0xa4, /* c8-cf */ 323 0xf0, 0xd0, 0xca, 0xcb, 0xc8, 0x3f, 0xcd, 0xce, /* d0-d7 */ 324 0xcf, 0x3f, 0x3f, 0x3f, 0x3f, 0xa6, 0xcc, 0x3f, /* d8-df */ 325 0xd3, 0xdf, 0xd4, 0xd2, 0xf5, 0xd5, 0xb5, 0xfe, /* e0-e7 */ 326 0xde, 0xda, 0xdb, 0xd9, 0xfd, 0xdd, 0xaf, 0x3f, /* e8-ef */ 327 0xad, 0xb1, 0x3f, 0xbe, 0xb6, 0xa7, 0xf7, 0xb8, /* f0-f7 */ 328 0xb0, 0xa8, 0xb7, 0xb9, 0xb3, 0xb2, 0x3f, 0x3f, /* f8-ff */ 329}; 330 331static u_char 332u2l[256] = { 333/* tolower */ 334 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 00-07 */ 335 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 08-0f */ 336 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 10-17 */ 337 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 18-1f */ 338 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */ 339 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 28-2f */ 340 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */ 341 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 38-3f */ 342 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 40-47 */ 343 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 48-4f */ 344 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 50-57 */ 345 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 58-5f */ 346 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 60-67 */ 347 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 68-6f */ 348 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 70-77 */ 349 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 78-7f */ 350 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 80-87 */ 351 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 88-8f */ 352 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 90-97 */ 353 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 98-9f */ 354 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* a0-a7 */ 355 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* a8-af */ 356 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* b0-b7 */ 357 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* b8-bf */ 358 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* c0-c7 */ 359 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* c8-cf */ 360 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xd7, /* d0-d7 */ 361 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xdf, /* d8-df */ 362 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* e0-e7 */ 363 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* e8-ef */ 364 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* f0-f7 */ 365 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* f8-ff */ 366}; 367 368static u_char 369l2u[256] = { 370/* toupper */ 371 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 00-07 */ 372 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 08-0f */ 373 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 10-17 */ 374 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 18-1f */ 375 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */ 376 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 28-2f */ 377 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */ 378 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 38-3f */ 379 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 40-47 */ 380 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 48-4f */ 381 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 50-57 */ 382 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 58-5f */ 383 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 60-67 */ 384 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 68-6f */ 385 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 70-77 */ 386 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 78-7f */ 387 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 80-87 */ 388 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 88-8f */ 389 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 90-97 */ 390 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 98-9f */ 391 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* a0-a7 */ 392 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* a8-af */ 393 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* b0-b7 */ 394 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* b8-bf */ 395 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* c0-c7 */ 396 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* c8-cf */ 397 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xd7, /* d0-d7 */ 398 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xdf, /* d8-df */ 399 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* e0-e7 */ 400 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* e8-ef */ 401 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* f0-f7 */ 402 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* f8-ff */ 403}; 404 405/* 406 * DOS filenames are made of 2 parts, the name part and the extension part. 407 * The name part is 8 characters long and the extension part is 3 408 * characters long. They may contain trailing blanks if the name or 409 * extension are not long enough to fill their respective fields. 410 */ 411 412/* 413 * Convert a DOS filename to a unix filename. And, return the number of 414 * characters in the resulting unix filename excluding the terminating 415 * null. 416 */ 417int 418dos2unixfn(dn, un, lower, pmp) 419 u_char dn[11]; 420 u_char *un; 421 int lower; 422 struct msdosfsmount *pmp; 423{ 424 int i; 425 int thislong = 0; 426 u_int16_t c; 427 428 /* 429 * If first char of the filename is SLOT_E5 (0x05), then the real 430 * first char of the filename should be 0xe5. But, they couldn't 431 * just have a 0xe5 mean 0xe5 because that is used to mean a freed 432 * directory slot. Another dos quirk. 433 */ 434 if (*dn == SLOT_E5) 435 *dn = 0xe5; 436 437 /* 438 * Copy the name portion into the unix filename string. 439 */ 440 for (i = 8; i > 0 && *dn != ' ';) { 441 c = dos2unixchr((const u_char **)&dn, (size_t *)&i, lower, pmp); 442 if (c & 0xff00) { 443 *un++ = c >> 8; 444 thislong++; 445 } 446 *un++ = c; 447 thislong++; 448 } 449 dn += i; 450 451 /* 452 * Now, if there is an extension then put in a period and copy in 453 * the extension. 454 */ 455 if (*dn != ' ') { 456 *un++ = '.'; 457 thislong++; 458 for (i = 3; i > 0 && *dn != ' ';) { 459 c = dos2unixchr((const u_char **)&dn, (size_t *)&i, lower, pmp); 460 if (c & 0xff00) { 461 *un++ = c >> 8; 462 thislong++; 463 } 464 *un++ = c; 465 thislong++; 466 } 467 } 468 *un++ = 0; 469 470 return (thislong); 471} 472 473/* 474 * Convert a unix filename to a DOS filename according to Win95 rules. 475 * If applicable and gen is not 0, it is inserted into the converted 476 * filename as a generation number. 477 * Returns 478 * 0 if name couldn't be converted 479 * 1 if the converted name is the same as the original 480 * (no long filename entry necessary for Win95) 481 * 2 if conversion was successful 482 * 3 if conversion was successful and generation number was inserted 483 */ 484int 485unix2dosfn(un, dn, unlen, gen, pmp) 486 const u_char *un; 487 u_char dn[12]; 488 int unlen; 489 u_int gen; 490 struct msdosfsmount *pmp; 491{ 492 int i, j, l; 493 int conv = 1; 494 const u_char *cp, *dp, *dp1; 495 u_char gentext[6], *wcp; 496 u_int16_t c; 497 498 /* 499 * Fill the dos filename string with blanks. These are DOS's pad 500 * characters. 501 */ 502 for (i = 0; i < 11; i++) 503 dn[i] = ' '; 504 dn[11] = 0; 505 506 /* 507 * The filenames "." and ".." are handled specially, since they 508 * don't follow dos filename rules. 509 */ 510 if (un[0] == '.' && unlen == 1) { 511 dn[0] = '.'; 512 return gen <= 1; 513 } 514 if (un[0] == '.' && un[1] == '.' && unlen == 2) { 515 dn[0] = '.'; 516 dn[1] = '.'; 517 return gen <= 1; 518 } 519 520 /* 521 * Filenames with only blanks and dots are not allowed! 522 */ 523 for (cp = un, i = unlen; --i >= 0; cp++) 524 if (*cp != ' ' && *cp != '.') 525 break; 526 if (i < 0) 527 return 0; 528 529 530 /* 531 * Filenames with some characters are not allowed! 532 */ 533 for (cp = un, i = unlen; i > 0;) 534 if (unix2doschr(&cp, (size_t *)&i, pmp) == 0) 535 return 0; 536 537 /* 538 * Now find the extension 539 * Note: dot as first char doesn't start extension 540 * and trailing dots and blanks are ignored 541 * Note(2003/7): It seems recent Windows has 542 * defferent rule than this code, that Windows 543 * ignores all dots before extension, and use all 544 * chars as filename except for dots. 545 */ 546 dp = dp1 = 0; 547 for (cp = un + 1, i = unlen - 1; --i >= 0;) { 548 switch (*cp++) { 549 case '.': 550 if (!dp1) 551 dp1 = cp; 552 break; 553 case ' ': 554 break; 555 default: 556 if (dp1) 557 dp = dp1; 558 dp1 = 0; 559 break; 560 } 561 } 562 563 /* 564 * Now convert it (this part is for extension) 565 */ 566 if (dp) { 567 if (dp1) 568 l = dp1 - dp; 569 else 570 l = unlen - (dp - un); 571 for (cp = dp, i = l, j = 8; i > 0 && j < 11; j++) { 572 c = unix2doschr(&cp, (size_t *)&i, pmp); 573 if (c & 0xff00) { 574 dn[j] = c >> 8; 575 if (++j < 11) { 576 dn[j] = c; 577 continue; 578 } else { 579 conv = 3; 580 dn[j-1] = ' '; 581 break; 582 } 583 } else { 584 dn[j] = c; 585 } 586 if (*(cp - 1) != dn[j] && conv != 3) 587 conv = 2; 588 if (dn[j] == 1) { 589 conv = 3; 590 dn[j] = '_'; 591 } 592 if (dn[j] == 2) { 593 conv = 3; 594 dn[j--] = ' '; 595 } 596 } 597 if (i > 0) 598 conv = 3; 599 dp--; 600 } else { 601 for (dp = cp; *--dp == ' ' || *dp == '.';); 602 dp++; 603 } 604 605 /* 606 * Now convert the rest of the name 607 */ 608 for (i = dp - un, j = 0; un < dp && j < 8; j++) { 609 c = unix2doschr(&un, (size_t *)&i, pmp); 610 if (c & 0xff00) { 611 dn[j] = c >> 8; 612 if (++j < 8) { 613 dn[j] = c; 614 continue; 615 } else { 616 conv = 3; 617 dn[j-1] = ' '; 618 break; 619 } 620 } else { 621 dn[j] = c; 622 } 623 if (*(un - 1) != dn[j] && conv != 3) 624 conv = 2; 625 if (dn[j] == 1) { 626 conv = 3; 627 dn[j] = '_'; 628 } 629 if (dn[j] == 2) { 630 conv = 3; 631 dn[j--] = ' '; 632 } 633 } 634 if (un < dp) 635 conv = 3; 636 /* 637 * If we didn't have any chars in filename, 638 * generate a default 639 */ 640 if (!j) 641 dn[0] = '_'; 642 643 /* 644 * If there wasn't any char dropped, 645 * there is no place for generation numbers 646 */ 647 if (conv != 3) { 648 if (gen > 1) 649 conv = 0; 650 goto done; 651 } 652 653 /* 654 * Now insert the generation number into the filename part 655 */ 656 if (gen == 0) 657 goto done; 658 for (wcp = gentext + sizeof(gentext); wcp > gentext && gen; gen /= 10) 659 *--wcp = gen % 10 + '0'; 660 if (gen) { 661 conv = 0; 662 goto done; 663 } 664 for (i = 8; dn[--i] == ' ';); 665 i++; 666 if (gentext + sizeof(gentext) - wcp + 1 > 8 - i) 667 i = 8 - (gentext + sizeof(gentext) - wcp + 1); 668 /* 669 * Correct posision to where insert the generation number 670 */ 671 cp = dn; 672 i -= mbsadjpos((const char**)&cp, i, unlen, 1, pmp->pm_flags, pmp->pm_d2u); 673 674 dn[i++] = '~'; 675 while (wcp < gentext + sizeof(gentext)) 676 dn[i++] = *wcp++; 677 678 /* 679 * Tail of the filename should be space 680 */ 681 while (i < 8) 682 dn[i++] = ' '; 683 conv = 3; 684 685done: 686 /* 687 * The first character cannot be E5, 688 * because that means a deleted entry 689 */ 690 if (dn[0] == 0xe5) 691 dn[0] = SLOT_E5; 692 693 return conv; 694} 695 696/* 697 * Create a Win95 long name directory entry 698 * Note: assumes that the filename is valid, 699 * i.e. doesn't consist solely of blanks and dots 700 */ 701int 702unix2winfn(un, unlen, wep, cnt, chksum, pmp) 703 const u_char *un; 704 int unlen; 705 struct winentry *wep; 706 int cnt; 707 int chksum; 708 struct msdosfsmount *pmp; 709{ 710 u_int8_t *wcp; 711 int i, end; 712 u_int16_t code; 713 714 /* 715 * Drop trailing blanks and dots 716 */ 717 unlen = winLenFixup(un, unlen); 718 719 /* 720 * Cut *un for this slot 721 */ 722 unlen = mbsadjpos((const char **)&un, unlen, (cnt - 1) * WIN_CHARS, 2, 723 pmp->pm_flags, pmp->pm_u2w); 724 725 /* 726 * Initialize winentry to some useful default 727 */ 728 for (wcp = (u_int8_t *)wep, i = sizeof(*wep); --i >= 0; *wcp++ = 0xff); 729 wep->weCnt = cnt; 730 wep->weAttributes = ATTR_WIN95; 731 wep->weReserved1 = 0; 732 wep->weChksum = chksum; 733 wep->weReserved2 = 0; 734 735 /* 736 * Now convert the filename parts 737 */ 738 end = 0; 739 for (wcp = wep->wePart1, i = sizeof(wep->wePart1)/2; --i >= 0 && !end;) { 740 code = unix2winchr(&un, (size_t *)&unlen, 0, pmp); 741 *wcp++ = code; 742 *wcp++ = code >> 8; 743 if (!code) 744 end = WIN_LAST; 745 } 746 for (wcp = wep->wePart2, i = sizeof(wep->wePart2)/2; --i >= 0 && !end;) { 747 code = unix2winchr(&un, (size_t *)&unlen, 0, pmp); 748 *wcp++ = code; 749 *wcp++ = code >> 8; 750 if (!code) 751 end = WIN_LAST; 752 } 753 for (wcp = wep->wePart3, i = sizeof(wep->wePart3)/2; --i >= 0 && !end;) { 754 code = unix2winchr(&un, (size_t *)&unlen, 0, pmp); 755 *wcp++ = code; 756 *wcp++ = code >> 8; 757 if (!code) 758 end = WIN_LAST; 759 } 760 if (*un == '\0') 761 end = WIN_LAST; 762 wep->weCnt |= end; 763 return !end; 764} 765 766/* 767 * Compare our filename to the one in the Win95 entry 768 * Returns the checksum or -1 if no match 769 */ 770int 771winChkName(un, unlen, chksum, pmp) 772 const u_char *un; 773 int unlen; 774 int chksum; 775 struct msdosfsmount *pmp; 776{ 777 int len; 778 u_int16_t c1, c2; 779 u_char *np; 780 struct dirent dirbuf; 781 782 /* 783 * We alread have winentry in mbnambuf 784 */ 785 if (!mbnambuf_flush(&dirbuf) || !dirbuf.d_namlen) 786 return -1; 787 788#ifdef MSDOSFS_DEBUG 789 printf("winChkName(): un=%s:%d,d_name=%s:%d\n", un, unlen, 790 dirbuf.d_name, 791 dirbuf.d_namlen); 792#endif 793 794 /* 795 * Compare the name parts 796 */ 797 len = dirbuf.d_namlen; 798 if (unlen != len) 799 return -2; 800 801 for (np = dirbuf.d_name; unlen > 0 && len > 0;) { 802 /* 803 * Should comparison be case insensitive? 804 */ 805 c1 = unix2winchr((const u_char **)&np, (size_t *)&len, 0, pmp); 806 c2 = unix2winchr(&un, (size_t *)&unlen, 0, pmp); 807 if (c1 != c2) 808 return -2; 809 } 810 return chksum; 811} 812 813/* 814 * Convert Win95 filename to dirbuf. 815 * Returns the checksum or -1 if impossible 816 */ 817int 818win2unixfn(wep, chksum, pmp) 819 struct winentry *wep; 820 int chksum; 821 struct msdosfsmount *pmp; 822{ 823 u_int8_t *cp; 824 u_int8_t *np, name[WIN_CHARS * 2 + 1]; 825 u_int16_t code; 826 int i; 827 828 if ((wep->weCnt&WIN_CNT) > howmany(WIN_MAXLEN, WIN_CHARS) 829 || !(wep->weCnt&WIN_CNT)) 830 return -1; 831 832 /* 833 * First compare checksums 834 */ 835 if (wep->weCnt&WIN_LAST) { 836 chksum = wep->weChksum; 837 } else if (chksum != wep->weChksum) 838 chksum = -1; 839 if (chksum == -1) 840 return -1; 841 842 /* 843 * Convert the name parts 844 */ 845 np = name; 846 for (cp = wep->wePart1, i = sizeof(wep->wePart1)/2; --i >= 0;) { 847 code = (cp[1] << 8) | cp[0]; 848 switch (code) { 849 case 0: 850 *np = '\0'; 851 mbnambuf_write(name, (wep->weCnt & WIN_CNT) - 1); 852 return chksum; 853 case '/': 854 *np = '\0'; 855 return -1; 856 default: 857 code = win2unixchr(code, pmp); 858 if (code & 0xff00) 859 *np++ = code >> 8; 860 *np++ = code; 861 break; 862 } 863 cp += 2; 864 } 865 for (cp = wep->wePart2, i = sizeof(wep->wePart2)/2; --i >= 0;) { 866 code = (cp[1] << 8) | cp[0]; 867 switch (code) { 868 case 0: 869 *np = '\0'; 870 mbnambuf_write(name, (wep->weCnt & WIN_CNT) - 1); 871 return chksum; 872 case '/': 873 *np = '\0'; 874 return -1; 875 default: 876 code = win2unixchr(code, pmp); 877 if (code & 0xff00) 878 *np++ = code >> 8; 879 *np++ = code; 880 break; 881 } 882 cp += 2; 883 } 884 for (cp = wep->wePart3, i = sizeof(wep->wePart3)/2; --i >= 0;) { 885 code = (cp[1] << 8) | cp[0]; 886 switch (code) { 887 case 0: 888 *np = '\0'; 889 mbnambuf_write(name, (wep->weCnt & WIN_CNT) - 1); 890 return chksum; 891 case '/': 892 *np = '\0'; 893 return -1; 894 default: 895 code = win2unixchr(code, pmp); 896 if (code & 0xff00) 897 *np++ = code >> 8; 898 *np++ = code; 899 break; 900 } 901 cp += 2; 902 } 903 *np = '\0'; 904 mbnambuf_write(name, (wep->weCnt & WIN_CNT) - 1); 905 return chksum; 906} 907 908/* 909 * Compute the checksum of a DOS filename for Win95 use 910 */ 911u_int8_t 912winChksum(name) 913 u_int8_t *name; 914{ 915 int i; 916 u_int8_t s; 917 918 for (s = 0, i = 11; --i >= 0; s += *name++) 919 s = (s << 7)|(s >> 1); 920 return s; 921} 922 923/* 924 * Determine the number of slots necessary for Win95 names 925 */ 926int 927winSlotCnt(un, unlen, pmp) 928 const u_char *un; 929 int unlen; 930 struct msdosfsmount *pmp; 931{ 932 size_t wlen; 933 char wn[WIN_MAXLEN * 2 + 1], *wnp; 934 935 unlen = winLenFixup(un, unlen); 936 937 if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) { 938 wlen = WIN_MAXLEN * 2; 939 wnp = wn; 940 msdosfs_iconv->conv(pmp->pm_u2w, (const char **)&un, (size_t *)&unlen, &wnp, &wlen); 941 if (unlen > 0) 942 return 0; 943 return howmany(WIN_MAXLEN - wlen/2, WIN_CHARS); 944 } 945 946 if (unlen > WIN_MAXLEN) 947 return 0; 948 return howmany(unlen, WIN_CHARS); 949} 950 951/* 952 * Determine the number of bytes neccesary for Win95 names 953 */ 954int 955winLenFixup(un, unlen) 956 const u_char* un; 957 int unlen; 958{ 959 for (un += unlen; unlen > 0; unlen--) 960 if (*--un != ' ' && *un != '.') 961 break; 962 return unlen; 963} 964 965/* 966 * Store an area with multi byte string instr, and reterns left 967 * byte of instr and moves pointer forward. The area's size is 968 * inlen or outlen. 969 */ 970static int 971mbsadjpos(const char **instr, int inlen, int outlen, int weight, int flag, void *handle) 972{ 973 char *outp, outstr[outlen * weight + 1]; 974 975 if (flag & MSDOSFSMNT_KICONV && msdosfs_iconv) { 976 outp = outstr; 977 outlen *= weight; 978 msdosfs_iconv->conv(handle, instr, (size_t *)&inlen, &outp, (size_t *)&outlen); 979 return (inlen); 980 } 981 982 (*instr) += min(inlen, outlen); 983 return (inlen - min(inlen, outlen)); 984} 985 986/* 987 * Convert DOS char to Local char 988 */ 989static u_int16_t 990dos2unixchr(const u_char **instr, size_t *ilen, int lower, struct msdosfsmount *pmp) 991{ 992 u_char c; 993 char *outp, outbuf[3]; 994 u_int16_t wc; 995 size_t len, olen; 996 997 if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) { 998 olen = len = 2; 999 outp = outbuf; 1000 1001 if (lower & (LCASE_BASE | LCASE_EXT)) 1002 msdosfs_iconv->convchr_case(pmp->pm_d2u, (const char **)instr, 1003 ilen, &outp, &olen, KICONV_LOWER); 1004 else 1005 msdosfs_iconv->convchr(pmp->pm_d2u, (const char **)instr, 1006 ilen, &outp, &olen); 1007 len -= olen; 1008 1009 /* 1010 * return '?' if failed to convert 1011 */ 1012 if (len == 0) { 1013 (*ilen)--; 1014 (*instr)++; 1015 return ('?'); 1016 } 1017 1018 wc = 0; 1019 while(len--) 1020 wc |= (*(outp - len - 1) & 0xff) << (len << 3); 1021 return (wc); 1022 } 1023 1024 (*ilen)--; 1025 c = *(*instr)++; 1026 c = dos2unix[c]; 1027 if (lower & (LCASE_BASE | LCASE_EXT)) 1028 c = u2l[c]; 1029 return ((u_int16_t)c); 1030} 1031 1032/* 1033 * Convert Local char to DOS char 1034 */ 1035static u_int16_t 1036unix2doschr(const u_char **instr, size_t *ilen, struct msdosfsmount *pmp) 1037{ 1038 u_char c; 1039 char *up, *outp, unicode[3], outbuf[3]; 1040 u_int16_t wc; 1041 size_t len, ulen, olen; 1042 1043 if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) { 1044 /* 1045 * to hide an invisible character, using a unicode filter 1046 */ 1047 ulen = 2; 1048 len = *ilen; 1049 up = unicode; 1050 msdosfs_iconv->convchr(pmp->pm_u2w, (const char **)instr, 1051 ilen, &up, &ulen); 1052 1053 /* 1054 * cannot be converted 1055 */ 1056 if (ulen == 2) { 1057 (*ilen)--; 1058 (*instr)++; 1059 return (0); 1060 } 1061 1062 /* 1063 * return magic number for ascii char 1064 */ 1065 if ((len - *ilen) == 1) { 1066 c = *(*instr -1); 1067 if (! (c & 0x80)) { 1068 c = unix2dos[c]; 1069 if (c <= 2) 1070 return (c); 1071 } 1072 } 1073 1074 /* 1075 * now convert using libiconv 1076 */ 1077 *instr -= len - *ilen; 1078 *ilen = (int)len; 1079 1080 olen = len = 2; 1081 outp = outbuf; 1082 msdosfs_iconv->convchr_case(pmp->pm_u2d, (const char **)instr, 1083 ilen, &outp, &olen, KICONV_FROM_UPPER); 1084 len -= olen; 1085 wc = 0; 1086 while(len--) 1087 wc |= (*(outp - len - 1) & 0xff) << (len << 3); 1088 return (wc); 1089 } 1090 1091 (*ilen)--; 1092 c = *(*instr)++; 1093 c = l2u[c]; 1094 c = unix2dos[c]; 1095 return ((u_int16_t)c); 1096} 1097 1098/* 1099 * Convert Windows char to Local char 1100 */ 1101static u_int16_t 1102win2unixchr(u_int16_t wc, struct msdosfsmount *pmp) 1103{ 1104 u_char *inp, *outp, inbuf[3], outbuf[3]; 1105 size_t ilen, olen, len; 1106 1107 if (wc == 0) 1108 return (0); 1109 1110 if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) { 1111 inbuf[0] = (u_char)(wc>>8); 1112 inbuf[1] = (u_char)wc; 1113 inbuf[2] = '\0'; 1114 1115 ilen = olen = len = 2; 1116 inp = inbuf; 1117 outp = outbuf; 1118 msdosfs_iconv->convchr(pmp->pm_w2u, (const char **)&inp, &ilen, 1119 (char **)&outp, &olen); 1120 len -= olen; 1121 1122 /* 1123 * return '?' if failed to convert 1124 */ 1125 if (len == 0) { 1126 wc = '?'; 1127 return (wc); 1128 } 1129 1130 wc = 0; 1131 while(len--) 1132 wc |= (*(outp - len - 1) & 0xff) << (len << 3); 1133 return (wc); 1134 } 1135 1136 if (wc & 0xff00) 1137 wc = '?'; 1138 1139 return (wc); 1140} 1141 1142/* 1143 * Convert Local char to Windows char 1144 */ 1145static u_int16_t 1146unix2winchr(const u_char **instr, size_t *ilen, int lower, struct msdosfsmount *pmp) 1147{ 1148 u_char *outp, outbuf[3]; 1149 u_int16_t wc; 1150 size_t olen; 1151 1152 if (*ilen == 0) 1153 return (0); 1154 1155 if (pmp->pm_flags & MSDOSFSMNT_KICONV && msdosfs_iconv) { 1156 outp = outbuf; 1157 olen = 2; 1158 if (lower & (LCASE_BASE | LCASE_EXT)) 1159 msdosfs_iconv->convchr_case(pmp->pm_u2w, (const char **)instr, 1160 ilen, (char **)&outp, &olen, 1161 KICONV_FROM_LOWER); 1162 else 1163 msdosfs_iconv->convchr(pmp->pm_u2w, (const char **)instr, 1164 ilen, (char **)&outp, &olen); 1165 1166 /* 1167 * return '0' if end of filename 1168 */ 1169 if (olen == 2) 1170 return (0); 1171 1172 wc = (outbuf[0]<<8) | outbuf[1]; 1173 1174 return (wc); 1175 } 1176 1177 (*ilen)--; 1178 wc = (*instr)[0]; 1179 if (lower & (LCASE_BASE | LCASE_EXT)) 1180 wc = u2l[wc]; 1181 (*instr)++; 1182 return (wc); 1183} 1184 1185/* 1186 * Make subent empty 1187 */ 1188void 1189mbnambuf_init(void) 1190{ 1191 int i; 1192 1193 for (i = 0; i < WIN_MAXSUBENTRIES; i++) { 1194 if (subent[i].p) { 1195 free(subent[i].p, M_MSDOSFSMNT); 1196 subent[i].p = NULL; 1197 subent[i].n = 0; 1198 } 1199 } 1200} 1201 1202/* 1203 * Write a subent entry from a slot 1204 */ 1205void 1206mbnambuf_write(char *name, int id) 1207{ 1208 if (subent[id].p) { 1209 printf("mbnambuf_write(): %s -> %s\n", subent[id].p, name); 1210 free(subent[id].p, M_MSDOSFSMNT); 1211 } 1212 subent[id].n = strlen(name); 1213 subent[id].p = malloc(subent[id].n + 1, M_MSDOSFSMNT, M_WAITOK); 1214 strcpy(subent[id].p, name); 1215} 1216 1217/* 1218 * Combine each subents to the *dp and initialize subent 1219 */ 1220char * 1221mbnambuf_flush(struct dirent *dp) 1222{ 1223 int i; 1224 char *name = dp->d_name; 1225 1226 *name = '\0'; 1227 dp->d_namlen = 0; 1228 for (i = 0; i < WIN_MAXSUBENTRIES; i++) { 1229 if (subent[i].p) { 1230 if (dp->d_namlen + subent[i].n > sizeof(dp->d_name) - 1) { 1231 mbnambuf_init(); 1232 return (NULL); 1233 } 1234 strcpy(name, subent[i].p); 1235 dp->d_namlen += subent[i].n; 1236 name += subent[i].n; 1237 } 1238 } 1239 mbnambuf_init(); 1240 return (dp->d_name); 1241} 1242