dlls/kernel/volume.c

   1 /*
   2  * Volume management functions
   3  *
   4  * Copyright 1993 Erik Bos
   5  * Copyright 1996, 2004 Alexandre Julliard
   6  * Copyright 1999 Petr Tomasek
   7  * Copyright 2000 Andreas Mohr
   8  * Copyright 2003 Eric Pouech
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <stdarg.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31
  32 #include "ntstatus.h"
  33 #define WIN32_NO_STATUS
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "winnls.h"
  37 #include "winternl.h"
  38 #include "winioctl.h"
  39 #include "ntddstor.h"
  40 #include "ntddcdrm.h"
  41 #include "kernel_private.h"
  42 #include "wine/library.h"
  43 #include "wine/unicode.h"
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(volume);
  47
  48 #define SUPERBLOCK_SIZE 2048
  49
  50 #define CDFRAMES_PERSEC         75
  51 #define CDFRAMES_PERMIN         (CDFRAMES_PERSEC * 60)
  52 #define FRAME_OF_ADDR(a)        ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
  53 #define FRAME_OF_TOC(toc, idx)  FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
  54
  55 #define GETWORD(buf,off)  MAKEWORD(buf[(off)],buf[(off+1)])
  56 #define GETLONG(buf,off)  MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
  57
  58 enum fs_type
  59 {
  60     FS_ERROR,    /* error accessing the device */
  61     FS_UNKNOWN,  /* unknown file system */
  62     FS_FAT1216,
  63     FS_FAT32,
  64     FS_ISO9660
  65 };
  66
  67 static const WCHAR drive_types[][8] =
  68 {
  69     { 0 }, /* DRIVE_UNKNOWN */
  70     { 0 }, /* DRIVE_NO_ROOT_DIR */
  71     {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
  72     {'h','d',0}, /* DRIVE_FIXED */
  73     {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
  74     {'c','d','r','o','m',0}, /* DRIVE_CDROM */
  75     {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
  76 };
  77
  78 /* read a Unix symlink; returned buffer must be freed by caller */
  79 static char *read_symlink( const char *path )
  80 {
  81     char *buffer;
  82     int ret, size = 128;
  83
  84     for (;;)
  85     {
  86         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
  87         {
  88             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
  89             return 0;
  90         }
  91         ret = readlink( path, buffer, size );
  92         if (ret == -1)
  93         {
  94             FILE_SetDosError();
  95             HeapFree( GetProcessHeap(), 0, buffer );
  96             return 0;
  97         }
  98         if (ret != size)
  99         {
 100             buffer[ret] = 0;
 101             return buffer;
 102         }
 103         HeapFree( GetProcessHeap(), 0, buffer );
 104         size *= 2;
 105     }
 106 }
 107
 108 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
 109 static char *get_dos_device_path( LPCWSTR name )
 110 {
 111     const char *config_dir = wine_get_config_dir();
 112     char *buffer, *dev;
 113     int i;
 114
 115     if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
 116                               strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
 117     {
 118         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 119         return NULL;
 120     }
 121     strcpy( buffer, config_dir );
 122     strcat( buffer, "/dosdevices/" );
 123     dev = buffer + strlen(buffer);
 124     /* no codepage conversion, DOS device names are ASCII anyway */
 125     for (i = 0; i < 5; i++)
 126         if (!(dev[i] = (char)tolowerW(name[i]))) break;
 127     dev[5] = 0;
 128     return buffer;
 129 }
 130
 131
 132 /* open a handle to a device root */
 133 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
 134 {
 135     static const WCHAR default_rootW[] = {'\\',0};
 136     UNICODE_STRING nt_name;
 137     OBJECT_ATTRIBUTES attr;
 138     IO_STATUS_BLOCK io;
 139     NTSTATUS status;
 140
 141     if (!root) root = default_rootW;
 142     if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
 143     {
 144         SetLastError( ERROR_PATH_NOT_FOUND );
 145         return FALSE;
 146     }
 147     attr.Length = sizeof(attr);
 148     attr.RootDirectory = 0;
 149     attr.Attributes = OBJ_CASE_INSENSITIVE;
 150     attr.ObjectName = &nt_name;
 151     attr.SecurityDescriptor = NULL;
 152     attr.SecurityQualityOfService = NULL;
 153
 154     status = NtOpenFile( handle, 0, &attr, &io, 0,
 155                          FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
 156     RtlFreeUnicodeString( &nt_name );
 157     if (status != STATUS_SUCCESS)
 158     {
 159         SetLastError( RtlNtStatusToDosError(status) );
 160         return FALSE;
 161     }
 162     return TRUE;
 163 }
 164
 165
 166 /* fetch the type of a drive from the registry */
 167 static UINT get_registry_drive_type( const WCHAR *root )
 168 {
 169     static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
 170                                              'S','o','f','t','w','a','r','e','\\',
 171                                              'W','i','n','e','\\',
 172                                              'D','r','i','v','e','s',0 };
 173     OBJECT_ATTRIBUTES attr;
 174     UNICODE_STRING nameW;
 175     HANDLE hkey;
 176     DWORD dummy;
 177     UINT ret = DRIVE_UNKNOWN;
 178     char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
 179     WCHAR driveW[] = {'A',':',0};
 180
 181     attr.Length = sizeof(attr);
 182     attr.RootDirectory = 0;
 183     attr.ObjectName = &nameW;
 184     attr.Attributes = 0;
 185     attr.SecurityDescriptor = NULL;
 186     attr.SecurityQualityOfService = NULL;
 187     RtlInitUnicodeString( &nameW, drive_types_keyW );
 188     /* @@ Wine registry key: HKLM\Software\Wine\Drives */
 189     if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
 190
 191     if (root) driveW[0] = root[0];
 192     else
 193     {
 194         WCHAR path[MAX_PATH];
 195         GetCurrentDirectoryW( MAX_PATH, path );
 196         driveW[0] = path[0];
 197     }
 198
 199     RtlInitUnicodeString( &nameW, driveW );
 200     if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 201     {
 202         unsigned int i;
 203         WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 204
 205         for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
 206         {
 207             if (!strcmpiW( data, drive_types[i] ))
 208             {
 209                 ret = i;
 210                 break;
 211             }
 212         }
 213     }
 214     NtClose( hkey );
 215     return ret;
 216 }
 217
 218
 219 /******************************************************************
 220  *              VOLUME_FindCdRomDataBestVoldesc
 221  */
 222 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
 223 {
 224     BYTE cur_vd_type, max_vd_type = 0;
 225     BYTE buffer[16];
 226     DWORD size, offs, best_offs = 0, extra_offs = 0;
 227
 228     for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
 229     {
 230         /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
 231          * the volume label is displaced forward by 8
 232          */
 233         if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
 234         if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
 235         if (size != sizeof(buffer)) break;
 236         /* check for non-ISO9660 signature */
 237         if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
 238         cur_vd_type = buffer[extra_offs];
 239         if (cur_vd_type == 0xff) /* voldesc set terminator */
 240             break;
 241         if (cur_vd_type > max_vd_type)
 242         {
 243             max_vd_type = cur_vd_type;
 244             best_offs = offs + extra_offs;
 245         }
 246     }
 247     return best_offs;
 248 }
 249
 250
 251 /***********************************************************************
 252  *           VOLUME_ReadFATSuperblock
 253  */
 254 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
 255 {
 256     DWORD size;
 257
 258     /* try a fixed disk, with a FAT partition */
 259     if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
 260         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 261         size != SUPERBLOCK_SIZE)
 262         return FS_ERROR;
 263
 264     /* FIXME: do really all FAT have their name beginning with
 265      * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
 266      */
 267     if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
 268     {
 269         /* guess which type of FAT we have */
 270         int reasonable;
 271         unsigned int sectors,
 272                      sect_per_fat,
 273                      total_sectors,
 274                      num_boot_sectors,
 275                      num_fats,
 276                      num_root_dir_ents,
 277                      bytes_per_sector,
 278                      sectors_per_cluster,
 279                      nclust;
 280         sect_per_fat = GETWORD(buff, 0x16);
 281         if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
 282         total_sectors = GETWORD(buff, 0x13);
 283         if (!total_sectors)
 284             total_sectors = GETLONG(buff, 0x20);
 285         num_boot_sectors = GETWORD(buff, 0x0e);
 286         num_fats =  buff[0x10];
 287         num_root_dir_ents = GETWORD(buff, 0x11);
 288         bytes_per_sector = GETWORD(buff, 0x0b);
 289         sectors_per_cluster = buff[0x0d];
 290         /* check if the parameters are reasonable and will not cause
 291          * arithmetic errors in the calculation */
 292         reasonable = num_boot_sectors < 16 &&
 293                      num_fats < 16 &&
 294                      bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
 295                      sectors_per_cluster > 1;
 296         if (!reasonable) return FS_UNKNOWN;
 297         sectors =  total_sectors - num_boot_sectors - num_fats * sect_per_fat -
 298             (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
 299         nclust = sectors / sectors_per_cluster;
 300         if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
 301                 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
 302         if (nclust < 65525)
 303         {
 304             if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
 305                     !memcmp(buff+0x36, "FAT", 3))
 306                 return FS_FAT1216;
 307         }
 308     }
 309     return FS_UNKNOWN;
 310 }
 311
 312
 313 /***********************************************************************
 314  *           VOLUME_ReadCDSuperblock
 315  */
 316 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
 317 {
 318     DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
 319
 320     if (!offs) return FS_UNKNOWN;
 321
 322     if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
 323         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 324         size != SUPERBLOCK_SIZE)
 325         return FS_ERROR;
 326
 327     /* check for iso9660 present */
 328     if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
 329     return FS_UNKNOWN;
 330 }
 331
 332
 333 /**************************************************************************
 334  *                              VOLUME_GetSuperblockLabel
 335  */
 336 static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock,
 337                                        WCHAR *label, DWORD len )
 338 {
 339     const BYTE *label_ptr = NULL;
 340     DWORD label_len;
 341
 342     switch(type)
 343     {
 344     case FS_ERROR:
 345     case FS_UNKNOWN:
 346         label_len = 0;
 347         break;
 348     case FS_FAT1216:
 349         label_ptr = superblock + 0x2b;
 350         label_len = 11;
 351         break;
 352     case FS_FAT32:
 353         label_ptr = superblock + 0x47;
 354         label_len = 11;
 355         break;
 356     case FS_ISO9660:
 357         {
 358             BYTE ver = superblock[0x5a];
 359
 360             if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f &&  /* Unicode ID */
 361                 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
 362             { /* yippee, unicode */
 363                 unsigned int i;
 364
 365                 if (len > 17) len = 17;
 366                 for (i = 0; i < len-1; i++)
 367                     label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
 368                 label[i] = 0;
 369                 while (i && label[i-1] == ' ') label[--i] = 0;
 370                 return;
 371             }
 372             label_ptr = superblock + 40;
 373             label_len = 32;
 374             break;
 375         }
 376     }
 377     if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
 378                                            &label_len, (char*)label_ptr, label_len );
 379     label_len /= sizeof(WCHAR);
 380     label[label_len] = 0;
 381     while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
 382 }
 383
 384
 385 /**************************************************************************
 386  *                              VOLUME_GetSuperblockSerial
 387  */
 388 static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock )
 389 {
 390     switch(type)
 391     {
 392     case FS_ERROR:
 393     case FS_UNKNOWN:
 394         break;
 395     case FS_FAT1216:
 396         return GETLONG( superblock, 0x27 );
 397     case FS_FAT32:
 398         return GETLONG( superblock, 0x33 );
 399     case FS_ISO9660:
 400         {
 401             BYTE sum[4];
 402             int i;
 403
 404             sum[0] = sum[1] = sum[2] = sum[3] = 0;
 405             for (i = 0; i < 2048; i += 4)
 406             {
 407                 /* DON'T optimize this into DWORD !! (breaks overflow) */
 408                 sum[0] += superblock[i+0];
 409                 sum[1] += superblock[i+1];
 410                 sum[2] += superblock[i+2];
 411                 sum[3] += superblock[i+3];
 412             }
 413             /*
 414              * OK, another braindead one... argh. Just believe it.
 415              * Me$$ysoft chose to reverse the serial number in NT4/W2K.
 416              * It's true and nobody will ever be able to change it.
 417              */
 418             if (GetVersion() & 0x80000000)
 419                 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
 420             else
 421                 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
 422         }
 423     }
 424     return 0;
 425 }
 426
 427
 428 /**************************************************************************
 429  *                              VOLUME_GetAudioCDSerial
 430  */
 431 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
 432 {
 433     DWORD serial = 0;
 434     int i;
 435
 436     for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
 437         serial += ((toc->TrackData[i].Address[1] << 16) |
 438                    (toc->TrackData[i].Address[2] << 8) |
 439                    toc->TrackData[i].Address[3]);
 440
 441     /*
 442      * dwStart, dwEnd collect the beginning and end of the disc respectively, in
 443      * frames.
 444      * There it is collected for correcting the serial when there are less than
 445      * 3 tracks.
 446      */
 447     if (toc->LastTrack - toc->FirstTrack + 1 < 3)
 448     {
 449         DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
 450         DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
 451         serial += dwEnd - dwStart;
 452     }
 453     return serial;
 454 }
 455
 456
 457 /***********************************************************************
 458  *           GetVolumeInformationW   (KERNEL32.@)
 459  */
 460 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
 461                                    DWORD *serial, DWORD *filename_len, DWORD *flags,
 462                                    LPWSTR fsname, DWORD fsname_len )
 463 {
 464     static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
 465     static const WCHAR fatW[] = {'F','A','T',0};
 466     static const WCHAR ntfsW[] = {'N','T','F','S',0};
 467     static const WCHAR cdfsW[] = {'C','D','F','S',0};
 468
 469     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 470     HANDLE handle;
 471     enum fs_type type = FS_UNKNOWN;
 472
 473     if (!root)
 474     {
 475         WCHAR path[MAX_PATH];
 476         GetCurrentDirectoryW( MAX_PATH, path );
 477         device[4] = path[0];
 478     }
 479     else
 480     {
 481         if (!root[0] || root[1] != ':')
 482         {
 483             SetLastError( ERROR_INVALID_NAME );
 484             return FALSE;
 485         }
 486         device[4] = root[0];
 487     }
 488
 489     /* try to open the device */
 490
 491     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 492                           NULL, OPEN_EXISTING, 0, 0 );
 493     if (handle != INVALID_HANDLE_VALUE)
 494     {
 495         BYTE superblock[SUPERBLOCK_SIZE];
 496         CDROM_TOC toc;
 497         DWORD br;
 498
 499         /* check for audio CD */
 500         /* FIXME: we only check the first track for now */
 501         if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
 502         {
 503             if (!(toc.TrackData[0].Control & 0x04))  /* audio track */
 504             {
 505                 TRACE( "%s: found audio CD\n", debugstr_w(device) );
 506                 if (label) lstrcpynW( label, audiocdW, label_len );
 507                 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
 508                 CloseHandle( handle );
 509                 type = FS_ISO9660;
 510                 goto fill_fs_info;
 511             }
 512             type = VOLUME_ReadCDSuperblock( handle, superblock );
 513         }
 514         else
 515         {
 516             type = VOLUME_ReadFATSuperblock( handle, superblock );
 517             if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 518         }
 519         CloseHandle( handle );
 520         TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
 521         if (type == FS_ERROR) return FALSE;
 522
 523         if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len );
 524         if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock );
 525         goto fill_fs_info;
 526     }
 527     else TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
 528
 529     /* we couldn't open the device, fallback to default strategy */
 530
 531     switch(GetDriveTypeW( root ))
 532     {
 533     case DRIVE_UNKNOWN:
 534     case DRIVE_NO_ROOT_DIR:
 535         SetLastError( ERROR_NOT_READY );
 536         return FALSE;
 537     case DRIVE_REMOVABLE:
 538     case DRIVE_FIXED:
 539     case DRIVE_REMOTE:
 540     case DRIVE_RAMDISK:
 541         type = FS_UNKNOWN;
 542         break;
 543     case DRIVE_CDROM:
 544         type = FS_ISO9660;
 545         break;
 546     }
 547
 548     if (label && label_len)
 549     {
 550         WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 551
 552         labelW[0] = device[4];
 553         handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 554                               OPEN_EXISTING, 0, 0 );
 555         if (handle != INVALID_HANDLE_VALUE)
 556         {
 557             char buffer[256], *p;
 558             DWORD size;
 559
 560             if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 561             CloseHandle( handle );
 562             p = buffer + size;
 563             while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
 564             *p = 0;
 565             if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, label_len ))
 566                 label[label_len-1] = 0;
 567         }
 568         else label[0] = 0;
 569     }
 570     if (serial)
 571     {
 572         WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
 573
 574         serialW[0] = device[4];
 575         handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 576                               OPEN_EXISTING, 0, 0 );
 577         if (handle != INVALID_HANDLE_VALUE)
 578         {
 579             char buffer[32];
 580             DWORD size;
 581
 582             if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 583             CloseHandle( handle );
 584             buffer[size] = 0;
 585             *serial = strtoul( buffer, NULL, 16 );
 586         }
 587         else *serial = 0;
 588     }
 589
 590 fill_fs_info:  /* now fill in the information that depends on the file system type */
 591
 592     switch(type)
 593     {
 594     case FS_ISO9660:
 595         if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
 596         if (filename_len) *filename_len = 221;
 597         if (flags) *flags = FILE_READ_ONLY_VOLUME;
 598         break;
 599     case FS_FAT1216:
 600     case FS_FAT32:
 601         if (fsname) lstrcpynW( fsname, fatW, fsname_len );
 602         if (filename_len) *filename_len = 255;
 603         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;  /* FIXME */
 604         break;
 605     default:
 606         if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
 607         if (filename_len) *filename_len = 255;
 608         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
 609         break;
 610     }
 611     return TRUE;
 612 }
 613
 614
 615 /***********************************************************************
 616  *           GetVolumeInformationA   (KERNEL32.@)
 617  */
 618 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
 619                                    DWORD label_len, DWORD *serial,
 620                                    DWORD *filename_len, DWORD *flags,
 621                                    LPSTR fsname, DWORD fsname_len )
 622 {
 623     WCHAR *rootW = NULL;
 624     LPWSTR labelW, fsnameW;
 625     BOOL ret;
 626
 627     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 628
 629     labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
 630     fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
 631
 632     if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
 633                                     filename_len, flags, fsnameW, fsname_len)))
 634     {
 635         if (label) FILE_name_WtoA( labelW, -1, label, label_len );
 636         if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
 637     }
 638
 639     HeapFree( GetProcessHeap(), 0, labelW );
 640     HeapFree( GetProcessHeap(), 0, fsnameW );
 641     return ret;
 642 }
 643
 644
 645
 646 /***********************************************************************
 647  *           SetVolumeLabelW   (KERNEL32.@)
 648  */
 649 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
 650 {
 651     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 652     HANDLE handle;
 653     enum fs_type type = FS_UNKNOWN;
 654
 655     if (!root)
 656     {
 657         WCHAR path[MAX_PATH];
 658         GetCurrentDirectoryW( MAX_PATH, path );
 659         device[4] = path[0];
 660     }
 661     else
 662     {
 663         if (!root[0] || root[1] != ':')
 664         {
 665             SetLastError( ERROR_INVALID_NAME );
 666             return FALSE;
 667         }
 668         device[4] = root[0];
 669     }
 670
 671     /* try to open the device */
 672
 673     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 674                           NULL, OPEN_EXISTING, 0, 0 );
 675     if (handle != INVALID_HANDLE_VALUE)
 676     {
 677         BYTE superblock[SUPERBLOCK_SIZE];
 678
 679         type = VOLUME_ReadFATSuperblock( handle, superblock );
 680         if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 681         CloseHandle( handle );
 682         if (type != FS_UNKNOWN)
 683         {
 684             /* we can't set the label on FAT or CDROM file systems */
 685             TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
 686             SetLastError( ERROR_ACCESS_DENIED );
 687             return FALSE;
 688         }
 689     }
 690     else
 691     {
 692         TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
 693         if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
 694     }
 695
 696     /* we couldn't open the device, fallback to default strategy */
 697
 698     switch(GetDriveTypeW( root ))
 699     {
 700     case DRIVE_UNKNOWN:
 701     case DRIVE_NO_ROOT_DIR:
 702         SetLastError( ERROR_NOT_READY );
 703         break;
 704     case DRIVE_REMOVABLE:
 705     case DRIVE_FIXED:
 706         {
 707             WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 708
 709             labelW[0] = device[4];
 710             handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 711                                   CREATE_ALWAYS, 0, 0 );
 712             if (handle != INVALID_HANDLE_VALUE)
 713             {
 714                 char buffer[64];
 715                 DWORD size;
 716
 717                 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
 718                     buffer[sizeof(buffer)-1] = 0;
 719                 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
 720                 CloseHandle( handle );
 721                 return TRUE;
 722             }
 723             break;
 724         }
 725     case DRIVE_REMOTE:
 726     case DRIVE_RAMDISK:
 727     case DRIVE_CDROM:
 728         SetLastError( ERROR_ACCESS_DENIED );
 729         break;
 730     }
 731     return FALSE;
 732 }
 733
 734 /***********************************************************************
 735  *           SetVolumeLabelA   (KERNEL32.@)
 736  */
 737 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
 738 {
 739     WCHAR *rootW = NULL, *volnameW = NULL;
 740     BOOL ret;
 741
 742     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 743     if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
 744     ret = SetVolumeLabelW( rootW, volnameW );
 745     HeapFree( GetProcessHeap(), 0, volnameW );
 746     return ret;
 747 }
 748
 749
 750 /***********************************************************************
 751  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 752  */
 753 BOOL WINAPI GetVolumeNameForVolumeMountPointW(LPCWSTR str, LPWSTR dst, DWORD size)
 754 {
 755     FIXME("(%s, %p, %lx): stub\n", debugstr_w(str), dst, size);
 756     return 0;
 757 }
 758
 759
 760 /***********************************************************************
 761  *           DefineDosDeviceW       (KERNEL32.@)
 762  */
 763 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 764 {
 765     DWORD len, dosdev;
 766     BOOL ret = FALSE;
 767     char *path = NULL, *target, *p;
 768
 769     TRACE("%lx, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 770
 771     if (!(flags & DDD_REMOVE_DEFINITION))
 772     {
 773         if (!(flags & DDD_RAW_TARGET_PATH))
 774         {
 775             FIXME( "(0x%08lx,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 776                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 777             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 778             return FALSE;
 779         }
 780
 781         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 782         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 783         {
 784             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 785             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 786         }
 787         else
 788         {
 789             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 790             return FALSE;
 791         }
 792     }
 793     else target = NULL;
 794
 795     /* first check for a DOS device */
 796
 797     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 798     {
 799         WCHAR name[5];
 800
 801         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 802         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 803         path = get_dos_device_path( name );
 804     }
 805     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 806     {
 807         path = get_dos_device_path( devname );
 808     }
 809     else SetLastError( ERROR_FILE_NOT_FOUND );
 810
 811     if (path)
 812     {
 813         if (target)
 814         {
 815             TRACE( "creating symlink %s -> %s\n", path, target );
 816             unlink( path );
 817             if (!symlink( target, path )) ret = TRUE;
 818             else FILE_SetDosError();
 819         }
 820         else
 821         {
 822             TRACE( "removing symlink %s\n", path );
 823             if (!unlink( path )) ret = TRUE;
 824             else FILE_SetDosError();
 825         }
 826         HeapFree( GetProcessHeap(), 0, path );
 827     }
 828     HeapFree( GetProcessHeap(), 0, target );
 829     return ret;
 830 }
 831
 832
 833 /***********************************************************************
 834  *           DefineDosDeviceA       (KERNEL32.@)
 835  */
 836 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 837 {
 838     WCHAR *devW, *targetW = NULL;
 839     BOOL ret;
 840
 841     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
 842     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
 843     ret = DefineDosDeviceW(flags, devW, targetW);
 844     HeapFree( GetProcessHeap(), 0, targetW );
 845     return ret;
 846 }
 847
 848
 849 /***********************************************************************
 850  *           QueryDosDeviceW   (KERNEL32.@)
 851  *
 852  * returns array of strings terminated by \0, terminated by \0
 853  */
 854 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
 855 {
 856     static const WCHAR auxW[] = {'A','U','X',0};
 857     static const WCHAR nulW[] = {'N','U','L',0};
 858     static const WCHAR prnW[] = {'P','R','N',0};
 859     static const WCHAR comW[] = {'C','O','M',0};
 860     static const WCHAR lptW[] = {'L','P','T',0};
 861     static const WCHAR rootW[] = {'A',':','\\',0};
 862     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
 863     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
 864     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
 865
 866     UNICODE_STRING nt_name;
 867     ANSI_STRING unix_name;
 868     WCHAR nt_buffer[10];
 869     NTSTATUS status;
 870
 871     if (!bufsize)
 872     {
 873         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 874         return 0;
 875     }
 876
 877     if (devname)
 878     {
 879         WCHAR *p, name[5];
 880         char *path, *link;
 881         DWORD dosdev, ret = 0;
 882
 883         if ((dosdev = RtlIsDosDeviceName_U( devname )))
 884         {
 885             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 886             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 887         }
 888         else if (devname[0] && devname[1] == ':' && !devname[2])
 889         {
 890             memcpy( name, devname, 3 * sizeof(WCHAR) );
 891         }
 892         else
 893         {
 894             SetLastError( ERROR_BAD_PATHNAME );
 895             return 0;
 896         }
 897
 898         if (!(path = get_dos_device_path( name ))) return 0;
 899         link = read_symlink( path );
 900         HeapFree( GetProcessHeap(), 0, path );
 901
 902         if (link)
 903         {
 904             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
 905             HeapFree( GetProcessHeap(), 0, link );
 906         }
 907         else if (dosdev)  /* look for device defaults */
 908         {
 909             if (!strcmpiW( name, auxW ))
 910             {
 911                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
 912                 {
 913                     memcpy( target, com1W, sizeof(com1W) );
 914                     ret = sizeof(com1W)/sizeof(WCHAR);
 915                 }
 916                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 917                 return ret;
 918             }
 919             if (!strcmpiW( name, prnW ))
 920             {
 921                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
 922                 {
 923                     memcpy( target, lpt1W, sizeof(lpt1W) );
 924                     ret = sizeof(lpt1W)/sizeof(WCHAR);
 925                 }
 926                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 927                 return ret;
 928             }
 929
 930             nt_buffer[0] = '\\';
 931             nt_buffer[1] = '?';
 932             nt_buffer[2] = '?';
 933             nt_buffer[3] = '\\';
 934             strcpyW( nt_buffer + 4, name );
 935             RtlInitUnicodeString( &nt_name, nt_buffer );
 936             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
 937             if (status) SetLastError( RtlNtStatusToDosError(status) );
 938             else
 939             {
 940                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
 941                 RtlFreeAnsiString( &unix_name );
 942             }
 943         }
 944
 945         if (ret)
 946         {
 947             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
 948             for (p = target; *p; p++) if (*p == '/') *p = '\\';
 949         }
 950
 951         return ret;
 952     }
 953     else  /* return a list of all devices */
 954     {
 955         WCHAR *p = target;
 956         int i;
 957
 958         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
 959         {
 960             SetLastError( ERROR_INSUFFICIENT_BUFFER );
 961             return 0;
 962         }
 963
 964         memcpy( p, auxW, sizeof(auxW) );
 965         p += sizeof(auxW) / sizeof(WCHAR);
 966         memcpy( p, nulW, sizeof(nulW) );
 967         p += sizeof(nulW) / sizeof(WCHAR);
 968         memcpy( p, prnW, sizeof(prnW) );
 969         p += sizeof(prnW) / sizeof(WCHAR);
 970
 971         strcpyW( nt_buffer, com0W );
 972         RtlInitUnicodeString( &nt_name, nt_buffer );
 973
 974         for (i = 1; i <= 9; i++)
 975         {
 976             nt_buffer[7] = '0' + i;
 977             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
 978             {
 979                 RtlFreeAnsiString( &unix_name );
 980                 if (p + 5 >= target + bufsize)
 981                 {
 982                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
 983                     return 0;
 984                 }
 985                 strcpyW( p, comW );
 986                 p[3] = '0' + i;
 987                 p[4] = 0;
 988                 p += 5;
 989             }
 990         }
 991         strcpyW( nt_buffer + 4, lptW );
 992         for (i = 1; i <= 9; i++)
 993         {
 994             nt_buffer[7] = '0' + i;
 995             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
 996             {
 997                 RtlFreeAnsiString( &unix_name );
 998                 if (p + 5 >= target + bufsize)
 999                 {
1000                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1001                     return 0;
1002                 }
1003                 strcpyW( p, lptW );
1004                 p[3] = '0' + i;
1005                 p[4] = 0;
1006                 p += 5;
1007             }
1008         }
1009
1010         strcpyW( nt_buffer + 4, rootW );
1011         RtlInitUnicodeString( &nt_name, nt_buffer );
1012
1013         for (i = 0; i < 26; i++)
1014         {
1015             nt_buffer[4] = 'a' + i;
1016             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1017             {
1018                 RtlFreeAnsiString( &unix_name );
1019                 if (p + 3 >= target + bufsize)
1020                 {
1021                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1022                     return 0;
1023                 }
1024                 *p++ = 'A' + i;
1025                 *p++ = ':';
1026                 *p++ = 0;
1027             }
1028         }
1029         *p++ = 0;  /* terminating null */
1030         return p - target;
1031     }
1032 }
1033
1034
1035 /***********************************************************************
1036  *           QueryDosDeviceA   (KERNEL32.@)
1037  *
1038  * returns array of strings terminated by \0, terminated by \0
1039  */
1040 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1041 {
1042     DWORD ret = 0, retW;
1043     WCHAR *devnameW = NULL;
1044     LPWSTR targetW;
1045
1046     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1047
1048     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1049     if (!targetW)
1050     {
1051         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1052         return 0;
1053     }
1054
1055     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1056
1057     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1058
1059     HeapFree(GetProcessHeap(), 0, targetW);
1060     return ret;
1061 }
1062
1063
1064 /***********************************************************************
1065  *           GetLogicalDrives   (KERNEL32.@)
1066  */
1067 DWORD WINAPI GetLogicalDrives(void)
1068 {
1069     const char *config_dir = wine_get_config_dir();
1070     struct stat st;
1071     char *buffer, *dev;
1072     DWORD ret = 0;
1073     int i;
1074
1075     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1076     {
1077         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1078         return 0;
1079     }
1080     strcpy( buffer, config_dir );
1081     strcat( buffer, "/dosdevices/a:" );
1082     dev = buffer + strlen(buffer) - 2;
1083
1084     for (i = 0; i < 26; i++)
1085     {
1086         *dev = 'a' + i;
1087         if (!stat( buffer, &st )) ret |= (1 << i);
1088     }
1089     HeapFree( GetProcessHeap(), 0, buffer );
1090     return ret;
1091 }
1092
1093
1094 /***********************************************************************
1095  *           GetLogicalDriveStringsA   (KERNEL32.@)
1096  */
1097 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1098 {
1099     DWORD drives = GetLogicalDrives();
1100     UINT drive, count;
1101
1102     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1103     if ((count * 4) + 1 > len) return count * 4 + 1;
1104
1105     for (drive = 0; drive < 26; drive++)
1106     {
1107         if (drives & (1 << drive))
1108         {
1109             *buffer++ = 'a' + drive;
1110             *buffer++ = ':';
1111             *buffer++ = '\\';
1112             *buffer++ = 0;
1113         }
1114     }
1115     *buffer = 0;
1116     return count * 4;
1117 }
1118
1119
1120 /***********************************************************************
1121  *           GetLogicalDriveStringsW   (KERNEL32.@)
1122  */
1123 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1124 {
1125     DWORD drives = GetLogicalDrives();
1126     UINT drive, count;
1127
1128     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1129     if ((count * 4) + 1 > len) return count * 4 + 1;
1130
1131     for (drive = 0; drive < 26; drive++)
1132     {
1133         if (drives & (1 << drive))
1134         {
1135             *buffer++ = 'a' + drive;
1136             *buffer++ = ':';
1137             *buffer++ = '\\';
1138             *buffer++ = 0;
1139         }
1140     }
1141     *buffer = 0;
1142     return count * 4;
1143 }
1144
1145
1146 /***********************************************************************
1147  *           GetDriveTypeW   (KERNEL32.@)
1148  *
1149  * Returns the type of the disk drive specified. If root is NULL the
1150  * root of the current directory is used.
1151  *
1152  * RETURNS
1153  *
1154  *  Type of drive (from Win32 SDK):
1155  *
1156  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1157  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1158  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1159  *   DRIVE_FIXED       the disk cannot be removed from the machine
1160  *   DRIVE_REMOTE      network disk
1161  *   DRIVE_CDROM       CDROM drive
1162  *   DRIVE_RAMDISK     virtual disk in RAM
1163  */
1164 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1165 {
1166     FILE_FS_DEVICE_INFORMATION info;
1167     IO_STATUS_BLOCK io;
1168     NTSTATUS status;
1169     HANDLE handle;
1170     UINT ret;
1171
1172     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1173
1174     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1175     NtClose( handle );
1176     if (status != STATUS_SUCCESS)
1177     {
1178         SetLastError( RtlNtStatusToDosError(status) );
1179         ret = DRIVE_UNKNOWN;
1180     }
1181     else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1182     {
1183         switch (info.DeviceType)
1184         {
1185         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1186         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1187         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1188         case FILE_DEVICE_DISK_FILE_SYSTEM:
1189             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1190             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1191             else ret = DRIVE_FIXED;
1192             break;
1193         default:
1194             ret = DRIVE_UNKNOWN;
1195             break;
1196         }
1197     }
1198     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1199     return ret;
1200 }
1201
1202
1203 /***********************************************************************
1204  *           GetDriveTypeA   (KERNEL32.@)
1205  *
1206  * See GetDriveTypeW.
1207  */
1208 UINT WINAPI GetDriveTypeA( LPCSTR root )
1209 {
1210     WCHAR *rootW = NULL;
1211
1212     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1213     return GetDriveTypeW( rootW );
1214 }
1215
1216
1217 /***********************************************************************
1218  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1219  *
1220  *  This function is used to acquire the size of the available and
1221  *  total space on a logical volume.
1222  *
1223  * RETURNS
1224  *
1225  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1226  *  detailed error information.
1227  *
1228  */
1229 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1230                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1231 {
1232     FILE_FS_SIZE_INFORMATION info;
1233     IO_STATUS_BLOCK io;
1234     NTSTATUS status;
1235     HANDLE handle;
1236     UINT units;
1237
1238     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1239
1240     if (!open_device_root( root, &handle )) return FALSE;
1241
1242     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1243     NtClose( handle );
1244     if (status != STATUS_SUCCESS)
1245     {
1246         SetLastError( RtlNtStatusToDosError(status) );
1247         return FALSE;
1248     }
1249
1250     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1251     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1252     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1253     /* FIXME: this one should take quotas into account */
1254     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1255     return TRUE;
1256 }
1257
1258
1259 /***********************************************************************
1260  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1261  *
1262  * See GetDiskFreeSpaceExW.
1263  */
1264 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1265                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1266 {
1267     WCHAR *rootW = NULL;
1268
1269     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1270     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1271 }
1272
1273
1274 /***********************************************************************
1275  *           GetDiskFreeSpaceW   (KERNEL32.@)
1276  */
1277 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1278                                LPDWORD sector_bytes, LPDWORD free_clusters,
1279                                LPDWORD total_clusters )
1280 {
1281     FILE_FS_SIZE_INFORMATION info;
1282     IO_STATUS_BLOCK io;
1283     NTSTATUS status;
1284     HANDLE handle;
1285     UINT units;
1286
1287     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1288            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1289
1290     if (!open_device_root( root, &handle )) return FALSE;
1291
1292     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1293     NtClose( handle );
1294     if (status != STATUS_SUCCESS)
1295     {
1296         SetLastError( RtlNtStatusToDosError(status) );
1297         return FALSE;
1298     }
1299
1300     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1301
1302     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1303         /* cap the size and available at 2GB as per specs */
1304         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1305             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1306             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1307                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1308         }
1309         /* nr. of clusters is always <= 65335 */
1310         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1311             info.TotalAllocationUnits.QuadPart /= 2;
1312             info.AvailableAllocationUnits.QuadPart /= 2;
1313             info.SectorsPerAllocationUnit *= 2;
1314         }
1315     }
1316
1317     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1318     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1319     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1320     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1321     return TRUE;
1322 }
1323
1324
1325 /***********************************************************************
1326  *           GetDiskFreeSpaceA   (KERNEL32.@)
1327  */
1328 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1329                                LPDWORD sector_bytes, LPDWORD free_clusters,
1330                                LPDWORD total_clusters )
1331 {
1332     WCHAR *rootW = NULL;
1333
1334     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1335     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1336 }
1337
1338 /***********************************************************************
1339  *           GetVolumePathNameA   (KERNEL32.@)
1340  */
1341 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1342 {
1343     FIXME("(%s, %p, %ld), stub!\n", debugstr_a(filename), volumepathname, buflen);
1344     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1345     return FALSE;
1346 }
1347
1348 /***********************************************************************
1349  *           GetVolumePathNameW   (KERNEL32.@)
1350  */
1351 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1352 {
1353     FIXME("(%s, %p, %ld), stub!\n", debugstr_w(filename), volumepathname, buflen);
1354     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1355     return FALSE;
1356 }