dlls/kernel32/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 "ntddcdrm.h"
  40 #include "kernel_private.h"
  41 #include "wine/library.h"
  42 #include "wine/unicode.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(volume);
  46
  47 #define SUPERBLOCK_SIZE 2048
  48
  49 #define CDFRAMES_PERSEC         75
  50 #define CDFRAMES_PERMIN         (CDFRAMES_PERSEC * 60)
  51 #define FRAME_OF_ADDR(a)        ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
  52 #define FRAME_OF_TOC(toc, idx)  FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
  53
  54 #define GETWORD(buf,off)  MAKEWORD(buf[(off)],buf[(off+1)])
  55 #define GETLONG(buf,off)  MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
  56
  57 enum fs_type
  58 {
  59     FS_ERROR,    /* error accessing the device */
  60     FS_UNKNOWN,  /* unknown file system */
  61     FS_FAT1216,
  62     FS_FAT32,
  63     FS_ISO9660
  64 };
  65
  66 static const WCHAR drive_types[][8] =
  67 {
  68     { 0 }, /* DRIVE_UNKNOWN */
  69     { 0 }, /* DRIVE_NO_ROOT_DIR */
  70     {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
  71     {'h','d',0}, /* DRIVE_FIXED */
  72     {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
  73     {'c','d','r','o','m',0}, /* DRIVE_CDROM */
  74     {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
  75 };
  76
  77 /* read a Unix symlink; returned buffer must be freed by caller */
  78 static char *read_symlink( const char *path )
  79 {
  80     char *buffer;
  81     int ret, size = 128;
  82
  83     for (;;)
  84     {
  85         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
  86         {
  87             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
  88             return 0;
  89         }
  90         ret = readlink( path, buffer, size );
  91         if (ret == -1)
  92         {
  93             FILE_SetDosError();
  94             HeapFree( GetProcessHeap(), 0, buffer );
  95             return 0;
  96         }
  97         if (ret != size)
  98         {
  99             buffer[ret] = 0;
 100             return buffer;
 101         }
 102         HeapFree( GetProcessHeap(), 0, buffer );
 103         size *= 2;
 104     }
 105 }
 106
 107 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
 108 static char *get_dos_device_path( LPCWSTR name )
 109 {
 110     const char *config_dir = wine_get_config_dir();
 111     char *buffer, *dev;
 112     int i;
 113
 114     if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
 115                               strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
 116     {
 117         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 118         return NULL;
 119     }
 120     strcpy( buffer, config_dir );
 121     strcat( buffer, "/dosdevices/" );
 122     dev = buffer + strlen(buffer);
 123     /* no codepage conversion, DOS device names are ASCII anyway */
 124     for (i = 0; i < 5; i++)
 125         if (!(dev[i] = (char)tolowerW(name[i]))) break;
 126     dev[5] = 0;
 127     return buffer;
 128 }
 129
 130
 131 /* open a handle to a device root */
 132 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
 133 {
 134     static const WCHAR default_rootW[] = {'\\',0};
 135     UNICODE_STRING nt_name;
 136     OBJECT_ATTRIBUTES attr;
 137     IO_STATUS_BLOCK io;
 138     NTSTATUS status;
 139
 140     if (!root) root = default_rootW;
 141     if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
 142     {
 143         SetLastError( ERROR_PATH_NOT_FOUND );
 144         return FALSE;
 145     }
 146     attr.Length = sizeof(attr);
 147     attr.RootDirectory = 0;
 148     attr.Attributes = OBJ_CASE_INSENSITIVE;
 149     attr.ObjectName = &nt_name;
 150     attr.SecurityDescriptor = NULL;
 151     attr.SecurityQualityOfService = NULL;
 152
 153     status = NtOpenFile( handle, 0, &attr, &io, 0,
 154                          FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
 155     RtlFreeUnicodeString( &nt_name );
 156     if (status != STATUS_SUCCESS)
 157     {
 158         SetLastError( RtlNtStatusToDosError(status) );
 159         return FALSE;
 160     }
 161     return TRUE;
 162 }
 163
 164
 165 /* fetch the type of a drive from the registry */
 166 static UINT get_registry_drive_type( const WCHAR *root )
 167 {
 168     static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
 169                                              'S','o','f','t','w','a','r','e','\\',
 170                                              'W','i','n','e','\\',
 171                                              'D','r','i','v','e','s',0 };
 172     OBJECT_ATTRIBUTES attr;
 173     UNICODE_STRING nameW;
 174     HANDLE hkey;
 175     DWORD dummy;
 176     UINT ret = DRIVE_UNKNOWN;
 177     char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
 178     WCHAR driveW[] = {'A',':',0};
 179
 180     attr.Length = sizeof(attr);
 181     attr.RootDirectory = 0;
 182     attr.ObjectName = &nameW;
 183     attr.Attributes = 0;
 184     attr.SecurityDescriptor = NULL;
 185     attr.SecurityQualityOfService = NULL;
 186     RtlInitUnicodeString( &nameW, drive_types_keyW );
 187     /* @@ Wine registry key: HKLM\Software\Wine\Drives */
 188     if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
 189
 190     if (root) driveW[0] = root[0];
 191     else
 192     {
 193         WCHAR path[MAX_PATH];
 194         GetCurrentDirectoryW( MAX_PATH, path );
 195         driveW[0] = path[0];
 196     }
 197
 198     RtlInitUnicodeString( &nameW, driveW );
 199     if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 200     {
 201         unsigned int i;
 202         WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 203
 204         for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
 205         {
 206             if (!strcmpiW( data, drive_types[i] ))
 207             {
 208                 ret = i;
 209                 break;
 210             }
 211         }
 212     }
 213     NtClose( hkey );
 214     return ret;
 215 }
 216
 217
 218 /******************************************************************
 219  *              VOLUME_FindCdRomDataBestVoldesc
 220  */
 221 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
 222 {
 223     BYTE cur_vd_type, max_vd_type = 0;
 224     BYTE buffer[0x800];
 225     DWORD size, offs, best_offs = 0, extra_offs = 0;
 226
 227     for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
 228     {
 229         /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
 230          * the volume label is displaced forward by 8
 231          */
 232         if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
 233         if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
 234         if (size != sizeof(buffer)) break;
 235         /* check for non-ISO9660 signature */
 236         if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
 237         cur_vd_type = buffer[extra_offs];
 238         if (cur_vd_type == 0xff) /* voldesc set terminator */
 239             break;
 240         if (cur_vd_type > max_vd_type)
 241         {
 242             max_vd_type = cur_vd_type;
 243             best_offs = offs + extra_offs;
 244         }
 245     }
 246     return best_offs;
 247 }
 248
 249
 250 /***********************************************************************
 251  *           VOLUME_ReadFATSuperblock
 252  */
 253 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
 254 {
 255     DWORD size;
 256
 257     /* try a fixed disk, with a FAT partition */
 258     if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
 259         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 260         size != SUPERBLOCK_SIZE)
 261         return FS_ERROR;
 262
 263     /* FIXME: do really all FAT have their name beginning with
 264      * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
 265      */
 266     if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
 267     {
 268         /* guess which type of FAT we have */
 269         int reasonable;
 270         unsigned int sectors,
 271                      sect_per_fat,
 272                      total_sectors,
 273                      num_boot_sectors,
 274                      num_fats,
 275                      num_root_dir_ents,
 276                      bytes_per_sector,
 277                      sectors_per_cluster,
 278                      nclust;
 279         sect_per_fat = GETWORD(buff, 0x16);
 280         if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
 281         total_sectors = GETWORD(buff, 0x13);
 282         if (!total_sectors)
 283             total_sectors = GETLONG(buff, 0x20);
 284         num_boot_sectors = GETWORD(buff, 0x0e);
 285         num_fats =  buff[0x10];
 286         num_root_dir_ents = GETWORD(buff, 0x11);
 287         bytes_per_sector = GETWORD(buff, 0x0b);
 288         sectors_per_cluster = buff[0x0d];
 289         /* check if the parameters are reasonable and will not cause
 290          * arithmetic errors in the calculation */
 291         reasonable = num_boot_sectors < 16 &&
 292                      num_fats < 16 &&
 293                      bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
 294                      sectors_per_cluster > 1;
 295         if (!reasonable) return FS_UNKNOWN;
 296         sectors =  total_sectors - num_boot_sectors - num_fats * sect_per_fat -
 297             (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
 298         nclust = sectors / sectors_per_cluster;
 299         if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
 300                 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
 301         if (nclust < 65525)
 302         {
 303             if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
 304                     !memcmp(buff+0x36, "FAT", 3))
 305                 return FS_FAT1216;
 306         }
 307     }
 308     return FS_UNKNOWN;
 309 }
 310
 311
 312 /***********************************************************************
 313  *           VOLUME_ReadCDSuperblock
 314  */
 315 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
 316 {
 317     DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
 318
 319     if (!offs) return FS_UNKNOWN;
 320
 321     if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
 322         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 323         size != SUPERBLOCK_SIZE)
 324         return FS_ERROR;
 325
 326     /* check for iso9660 present */
 327     if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
 328     return FS_UNKNOWN;
 329 }
 330
 331
 332 /**************************************************************************
 333  *                              VOLUME_GetSuperblockLabel
 334  */
 335 static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock,
 336                                        WCHAR *label, DWORD len )
 337 {
 338     const BYTE *label_ptr = NULL;
 339     DWORD label_len;
 340
 341     switch(type)
 342     {
 343     case FS_ERROR:
 344     case FS_UNKNOWN:
 345         label_len = 0;
 346         break;
 347     case FS_FAT1216:
 348         label_ptr = superblock + 0x2b;
 349         label_len = 11;
 350         break;
 351     case FS_FAT32:
 352         label_ptr = superblock + 0x47;
 353         label_len = 11;
 354         break;
 355     case FS_ISO9660:
 356         {
 357             BYTE ver = superblock[0x5a];
 358
 359             if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f &&  /* Unicode ID */
 360                 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
 361             { /* yippee, unicode */
 362                 unsigned int i;
 363
 364                 if (len > 17) len = 17;
 365                 for (i = 0; i < len-1; i++)
 366                     label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
 367                 label[i] = 0;
 368                 while (i && label[i-1] == ' ') label[--i] = 0;
 369                 return;
 370             }
 371             label_ptr = superblock + 40;
 372             label_len = 32;
 373             break;
 374         }
 375     }
 376     if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
 377                                            &label_len, (LPCSTR)label_ptr, label_len );
 378     label_len /= sizeof(WCHAR);
 379     label[label_len] = 0;
 380     while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
 381 }
 382
 383
 384 /**************************************************************************
 385  *                              VOLUME_GetSuperblockSerial
 386  */
 387 static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock )
 388 {
 389     switch(type)
 390     {
 391     case FS_ERROR:
 392     case FS_UNKNOWN:
 393         break;
 394     case FS_FAT1216:
 395         return GETLONG( superblock, 0x27 );
 396     case FS_FAT32:
 397         return GETLONG( superblock, 0x33 );
 398     case FS_ISO9660:
 399         {
 400             BYTE sum[4];
 401             int i;
 402
 403             sum[0] = sum[1] = sum[2] = sum[3] = 0;
 404             for (i = 0; i < 2048; i += 4)
 405             {
 406                 /* DON'T optimize this into DWORD !! (breaks overflow) */
 407                 sum[0] += superblock[i+0];
 408                 sum[1] += superblock[i+1];
 409                 sum[2] += superblock[i+2];
 410                 sum[3] += superblock[i+3];
 411             }
 412             /*
 413              * OK, another braindead one... argh. Just believe it.
 414              * Me$$ysoft chose to reverse the serial number in NT4/W2K.
 415              * It's true and nobody will ever be able to change it.
 416              */
 417             if (GetVersion() & 0x80000000)
 418                 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
 419             else
 420                 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
 421         }
 422     }
 423     return 0;
 424 }
 425
 426
 427 /**************************************************************************
 428  *                              VOLUME_GetAudioCDSerial
 429  */
 430 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
 431 {
 432     DWORD serial = 0;
 433     int i;
 434
 435     for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
 436         serial += ((toc->TrackData[i].Address[1] << 16) |
 437                    (toc->TrackData[i].Address[2] << 8) |
 438                    toc->TrackData[i].Address[3]);
 439
 440     /*
 441      * dwStart, dwEnd collect the beginning and end of the disc respectively, in
 442      * frames.
 443      * There it is collected for correcting the serial when there are less than
 444      * 3 tracks.
 445      */
 446     if (toc->LastTrack - toc->FirstTrack + 1 < 3)
 447     {
 448         DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
 449         DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
 450         serial += dwEnd - dwStart;
 451     }
 452     return serial;
 453 }
 454
 455
 456 /***********************************************************************
 457  *           GetVolumeInformationW   (KERNEL32.@)
 458  */
 459 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
 460                                    DWORD *serial, DWORD *filename_len, DWORD *flags,
 461                                    LPWSTR fsname, DWORD fsname_len )
 462 {
 463     static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
 464     static const WCHAR fatW[] = {'F','A','T',0};
 465     static const WCHAR ntfsW[] = {'N','T','F','S',0};
 466     static const WCHAR cdfsW[] = {'C','D','F','S',0};
 467
 468     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 469     HANDLE handle;
 470     enum fs_type type = FS_UNKNOWN;
 471
 472     if (!root)
 473     {
 474         WCHAR path[MAX_PATH];
 475         GetCurrentDirectoryW( MAX_PATH, path );
 476         device[4] = path[0];
 477     }
 478     else
 479     {
 480         if (!root[0] || root[1] != ':')
 481         {
 482             SetLastError( ERROR_INVALID_NAME );
 483             return FALSE;
 484         }
 485         device[4] = root[0];
 486     }
 487
 488     /* try to open the device */
 489
 490     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 491                           NULL, OPEN_EXISTING, 0, 0 );
 492     if (handle != INVALID_HANDLE_VALUE)
 493     {
 494         BYTE superblock[SUPERBLOCK_SIZE];
 495         CDROM_TOC toc;
 496         DWORD br;
 497
 498         /* check for audio CD */
 499         /* FIXME: we only check the first track for now */
 500         if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
 501         {
 502             if (!(toc.TrackData[0].Control & 0x04))  /* audio track */
 503             {
 504                 TRACE( "%s: found audio CD\n", debugstr_w(device) );
 505                 if (label) lstrcpynW( label, audiocdW, label_len );
 506                 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
 507                 CloseHandle( handle );
 508                 type = FS_ISO9660;
 509                 goto fill_fs_info;
 510             }
 511             type = VOLUME_ReadCDSuperblock( handle, superblock );
 512         }
 513         else
 514         {
 515             type = VOLUME_ReadFATSuperblock( handle, superblock );
 516             if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 517         }
 518         CloseHandle( handle );
 519         TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
 520         if (type == FS_ERROR) return FALSE;
 521
 522         if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len );
 523         if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock );
 524         goto fill_fs_info;
 525     }
 526     else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 527
 528     /* we couldn't open the device, fallback to default strategy */
 529
 530     switch(GetDriveTypeW( root ))
 531     {
 532     case DRIVE_UNKNOWN:
 533     case DRIVE_NO_ROOT_DIR:
 534         SetLastError( ERROR_NOT_READY );
 535         return FALSE;
 536     case DRIVE_REMOVABLE:
 537     case DRIVE_FIXED:
 538     case DRIVE_REMOTE:
 539     case DRIVE_RAMDISK:
 540         type = FS_UNKNOWN;
 541         break;
 542     case DRIVE_CDROM:
 543         type = FS_ISO9660;
 544         break;
 545     }
 546
 547     if (label && label_len)
 548     {
 549         WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 550
 551         labelW[0] = device[4];
 552         handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 553                               OPEN_EXISTING, 0, 0 );
 554         if (handle != INVALID_HANDLE_VALUE)
 555         {
 556             char buffer[256], *p;
 557             DWORD size;
 558
 559             if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 560             CloseHandle( handle );
 561             p = buffer + size;
 562             while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
 563             *p = 0;
 564             if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, label_len ))
 565                 label[label_len-1] = 0;
 566         }
 567         else label[0] = 0;
 568     }
 569     if (serial)
 570     {
 571         WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
 572
 573         serialW[0] = device[4];
 574         handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 575                               OPEN_EXISTING, 0, 0 );
 576         if (handle != INVALID_HANDLE_VALUE)
 577         {
 578             char buffer[32];
 579             DWORD size;
 580
 581             if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 582             CloseHandle( handle );
 583             buffer[size] = 0;
 584             *serial = strtoul( buffer, NULL, 16 );
 585         }
 586         else *serial = 0;
 587     }
 588
 589 fill_fs_info:  /* now fill in the information that depends on the file system type */
 590
 591     switch(type)
 592     {
 593     case FS_ISO9660:
 594         if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
 595         if (filename_len) *filename_len = 221;
 596         if (flags) *flags = FILE_READ_ONLY_VOLUME;
 597         break;
 598     case FS_FAT1216:
 599     case FS_FAT32:
 600         if (fsname) lstrcpynW( fsname, fatW, fsname_len );
 601         if (filename_len) *filename_len = 255;
 602         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;  /* FIXME */
 603         break;
 604     default:
 605         if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
 606         if (filename_len) *filename_len = 255;
 607         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
 608         break;
 609     }
 610     return TRUE;
 611 }
 612
 613
 614 /***********************************************************************
 615  *           GetVolumeInformationA   (KERNEL32.@)
 616  */
 617 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
 618                                    DWORD label_len, DWORD *serial,
 619                                    DWORD *filename_len, DWORD *flags,
 620                                    LPSTR fsname, DWORD fsname_len )
 621 {
 622     WCHAR *rootW = NULL;
 623     LPWSTR labelW, fsnameW;
 624     BOOL ret;
 625
 626     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 627
 628     labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
 629     fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
 630
 631     if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
 632                                     filename_len, flags, fsnameW, fsname_len)))
 633     {
 634         if (label) FILE_name_WtoA( labelW, -1, label, label_len );
 635         if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
 636     }
 637
 638     HeapFree( GetProcessHeap(), 0, labelW );
 639     HeapFree( GetProcessHeap(), 0, fsnameW );
 640     return ret;
 641 }
 642
 643
 644
 645 /***********************************************************************
 646  *           SetVolumeLabelW   (KERNEL32.@)
 647  */
 648 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
 649 {
 650     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 651     HANDLE handle;
 652     enum fs_type type = FS_UNKNOWN;
 653
 654     if (!root)
 655     {
 656         WCHAR path[MAX_PATH];
 657         GetCurrentDirectoryW( MAX_PATH, path );
 658         device[4] = path[0];
 659     }
 660     else
 661     {
 662         if (!root[0] || root[1] != ':')
 663         {
 664             SetLastError( ERROR_INVALID_NAME );
 665             return FALSE;
 666         }
 667         device[4] = root[0];
 668     }
 669
 670     /* try to open the device */
 671
 672     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 673                           NULL, OPEN_EXISTING, 0, 0 );
 674     if (handle != INVALID_HANDLE_VALUE)
 675     {
 676         BYTE superblock[SUPERBLOCK_SIZE];
 677
 678         type = VOLUME_ReadFATSuperblock( handle, superblock );
 679         if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 680         CloseHandle( handle );
 681         if (type != FS_UNKNOWN)
 682         {
 683             /* we can't set the label on FAT or CDROM file systems */
 684             TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
 685             SetLastError( ERROR_ACCESS_DENIED );
 686             return FALSE;
 687         }
 688     }
 689     else
 690     {
 691         TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 692         if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
 693     }
 694
 695     /* we couldn't open the device, fallback to default strategy */
 696
 697     switch(GetDriveTypeW( root ))
 698     {
 699     case DRIVE_UNKNOWN:
 700     case DRIVE_NO_ROOT_DIR:
 701         SetLastError( ERROR_NOT_READY );
 702         break;
 703     case DRIVE_REMOVABLE:
 704     case DRIVE_FIXED:
 705         {
 706             WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 707
 708             labelW[0] = device[4];
 709             handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 710                                   CREATE_ALWAYS, 0, 0 );
 711             if (handle != INVALID_HANDLE_VALUE)
 712             {
 713                 char buffer[64];
 714                 DWORD size;
 715
 716                 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
 717                     buffer[sizeof(buffer)-1] = 0;
 718                 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
 719                 CloseHandle( handle );
 720                 return TRUE;
 721             }
 722             break;
 723         }
 724     case DRIVE_REMOTE:
 725     case DRIVE_RAMDISK:
 726     case DRIVE_CDROM:
 727         SetLastError( ERROR_ACCESS_DENIED );
 728         break;
 729     }
 730     return FALSE;
 731 }
 732
 733 /***********************************************************************
 734  *           SetVolumeLabelA   (KERNEL32.@)
 735  */
 736 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
 737 {
 738     WCHAR *rootW = NULL, *volnameW = NULL;
 739     BOOL ret;
 740
 741     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 742     if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
 743     ret = SetVolumeLabelW( rootW, volnameW );
 744     HeapFree( GetProcessHeap(), 0, volnameW );
 745     return ret;
 746 }
 747
 748
 749 /***********************************************************************
 750  *           GetVolumeNameForVolumeMountPointA   (KERNEL32.@)
 751  */
 752 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
 753 {
 754     BOOL ret;
 755     WCHAR volumeW[50], *pathW = NULL;
 756     DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
 757
 758     TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
 759
 760     if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
 761         return FALSE;
 762
 763     if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
 764         FILE_name_WtoA( volumeW, -1, volume, len );
 765
 766     HeapFree( GetProcessHeap(), 0, pathW );
 767     return ret;
 768 }
 769
 770 /***********************************************************************
 771  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 772  */
 773 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
 774 {
 775     BOOL ret = FALSE;
 776     static const WCHAR fmt[] =
 777         { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
 778
 779     TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
 780
 781     if (!path || !path[0]) return FALSE;
 782
 783     if (size >= sizeof(fmt) / sizeof(WCHAR))
 784     {
 785         /* FIXME: will break when we support volume mounts */
 786         sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
 787         ret = TRUE;
 788     }
 789     return ret;
 790 }
 791
 792 /***********************************************************************
 793  *           DefineDosDeviceW       (KERNEL32.@)
 794  */
 795 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 796 {
 797     DWORD len, dosdev;
 798     BOOL ret = FALSE;
 799     char *path = NULL, *target, *p;
 800
 801     TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 802
 803     if (!(flags & DDD_REMOVE_DEFINITION))
 804     {
 805         if (!(flags & DDD_RAW_TARGET_PATH))
 806         {
 807             FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 808                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 809             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 810             return FALSE;
 811         }
 812
 813         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 814         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 815         {
 816             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 817             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 818         }
 819         else
 820         {
 821             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 822             return FALSE;
 823         }
 824     }
 825     else target = NULL;
 826
 827     /* first check for a DOS device */
 828
 829     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 830     {
 831         WCHAR name[5];
 832
 833         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 834         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 835         path = get_dos_device_path( name );
 836     }
 837     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 838     {
 839         path = get_dos_device_path( devname );
 840     }
 841     else SetLastError( ERROR_FILE_NOT_FOUND );
 842
 843     if (path)
 844     {
 845         if (target)
 846         {
 847             TRACE( "creating symlink %s -> %s\n", path, target );
 848             unlink( path );
 849             if (!symlink( target, path )) ret = TRUE;
 850             else FILE_SetDosError();
 851         }
 852         else
 853         {
 854             TRACE( "removing symlink %s\n", path );
 855             if (!unlink( path )) ret = TRUE;
 856             else FILE_SetDosError();
 857         }
 858         HeapFree( GetProcessHeap(), 0, path );
 859     }
 860     HeapFree( GetProcessHeap(), 0, target );
 861     return ret;
 862 }
 863
 864
 865 /***********************************************************************
 866  *           DefineDosDeviceA       (KERNEL32.@)
 867  */
 868 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 869 {
 870     WCHAR *devW, *targetW = NULL;
 871     BOOL ret;
 872
 873     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
 874     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
 875     ret = DefineDosDeviceW(flags, devW, targetW);
 876     HeapFree( GetProcessHeap(), 0, targetW );
 877     return ret;
 878 }
 879
 880
 881 /***********************************************************************
 882  *           QueryDosDeviceW   (KERNEL32.@)
 883  *
 884  * returns array of strings terminated by \0, terminated by \0
 885  */
 886 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
 887 {
 888     static const WCHAR auxW[] = {'A','U','X',0};
 889     static const WCHAR nulW[] = {'N','U','L',0};
 890     static const WCHAR prnW[] = {'P','R','N',0};
 891     static const WCHAR comW[] = {'C','O','M',0};
 892     static const WCHAR lptW[] = {'L','P','T',0};
 893     static const WCHAR rootW[] = {'A',':','\\',0};
 894     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
 895     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
 896     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
 897
 898     UNICODE_STRING nt_name;
 899     ANSI_STRING unix_name;
 900     WCHAR nt_buffer[10];
 901     NTSTATUS status;
 902
 903     if (!bufsize)
 904     {
 905         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 906         return 0;
 907     }
 908
 909     if (devname)
 910     {
 911         WCHAR *p, name[5];
 912         char *path, *link;
 913         DWORD dosdev, ret = 0;
 914
 915         if ((dosdev = RtlIsDosDeviceName_U( devname )))
 916         {
 917             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 918             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 919         }
 920         else if (devname[0] && devname[1] == ':' && !devname[2])
 921         {
 922             memcpy( name, devname, 3 * sizeof(WCHAR) );
 923         }
 924         else
 925         {
 926             SetLastError( ERROR_BAD_PATHNAME );
 927             return 0;
 928         }
 929
 930         if (!(path = get_dos_device_path( name ))) return 0;
 931         link = read_symlink( path );
 932         HeapFree( GetProcessHeap(), 0, path );
 933
 934         if (link)
 935         {
 936             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
 937             HeapFree( GetProcessHeap(), 0, link );
 938         }
 939         else if (dosdev)  /* look for device defaults */
 940         {
 941             if (!strcmpiW( name, auxW ))
 942             {
 943                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
 944                 {
 945                     memcpy( target, com1W, sizeof(com1W) );
 946                     ret = sizeof(com1W)/sizeof(WCHAR);
 947                 }
 948                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 949                 return ret;
 950             }
 951             if (!strcmpiW( name, prnW ))
 952             {
 953                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
 954                 {
 955                     memcpy( target, lpt1W, sizeof(lpt1W) );
 956                     ret = sizeof(lpt1W)/sizeof(WCHAR);
 957                 }
 958                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 959                 return ret;
 960             }
 961
 962             nt_buffer[0] = '\\';
 963             nt_buffer[1] = '?';
 964             nt_buffer[2] = '?';
 965             nt_buffer[3] = '\\';
 966             strcpyW( nt_buffer + 4, name );
 967             RtlInitUnicodeString( &nt_name, nt_buffer );
 968             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
 969             if (status) SetLastError( RtlNtStatusToDosError(status) );
 970             else
 971             {
 972                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
 973                 RtlFreeAnsiString( &unix_name );
 974             }
 975         }
 976
 977         if (ret)
 978         {
 979             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
 980             for (p = target; *p; p++) if (*p == '/') *p = '\\';
 981         }
 982
 983         return ret;
 984     }
 985     else  /* return a list of all devices */
 986     {
 987         WCHAR *p = target;
 988         int i;
 989
 990         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
 991         {
 992             SetLastError( ERROR_INSUFFICIENT_BUFFER );
 993             return 0;
 994         }
 995
 996         memcpy( p, auxW, sizeof(auxW) );
 997         p += sizeof(auxW) / sizeof(WCHAR);
 998         memcpy( p, nulW, sizeof(nulW) );
 999         p += sizeof(nulW) / sizeof(WCHAR);
1000         memcpy( p, prnW, sizeof(prnW) );
1001         p += sizeof(prnW) / sizeof(WCHAR);
1002
1003         strcpyW( nt_buffer, com0W );
1004         RtlInitUnicodeString( &nt_name, nt_buffer );
1005
1006         for (i = 1; i <= 9; i++)
1007         {
1008             nt_buffer[7] = '0' + i;
1009             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1010             {
1011                 RtlFreeAnsiString( &unix_name );
1012                 if (p + 5 >= target + bufsize)
1013                 {
1014                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1015                     return 0;
1016                 }
1017                 strcpyW( p, comW );
1018                 p[3] = '0' + i;
1019                 p[4] = 0;
1020                 p += 5;
1021             }
1022         }
1023         strcpyW( nt_buffer + 4, lptW );
1024         for (i = 1; i <= 9; i++)
1025         {
1026             nt_buffer[7] = '0' + i;
1027             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1028             {
1029                 RtlFreeAnsiString( &unix_name );
1030                 if (p + 5 >= target + bufsize)
1031                 {
1032                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1033                     return 0;
1034                 }
1035                 strcpyW( p, lptW );
1036                 p[3] = '0' + i;
1037                 p[4] = 0;
1038                 p += 5;
1039             }
1040         }
1041
1042         strcpyW( nt_buffer + 4, rootW );
1043         RtlInitUnicodeString( &nt_name, nt_buffer );
1044
1045         for (i = 0; i < 26; i++)
1046         {
1047             nt_buffer[4] = 'a' + i;
1048             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1049             {
1050                 RtlFreeAnsiString( &unix_name );
1051                 if (p + 3 >= target + bufsize)
1052                 {
1053                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1054                     return 0;
1055                 }
1056                 *p++ = 'A' + i;
1057                 *p++ = ':';
1058                 *p++ = 0;
1059             }
1060         }
1061         *p++ = 0;  /* terminating null */
1062         return p - target;
1063     }
1064 }
1065
1066
1067 /***********************************************************************
1068  *           QueryDosDeviceA   (KERNEL32.@)
1069  *
1070  * returns array of strings terminated by \0, terminated by \0
1071  */
1072 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1073 {
1074     DWORD ret = 0, retW;
1075     WCHAR *devnameW = NULL;
1076     LPWSTR targetW;
1077
1078     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1079
1080     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1081     if (!targetW)
1082     {
1083         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1084         return 0;
1085     }
1086
1087     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1088
1089     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1090
1091     HeapFree(GetProcessHeap(), 0, targetW);
1092     return ret;
1093 }
1094
1095
1096 /***********************************************************************
1097  *           GetLogicalDrives   (KERNEL32.@)
1098  */
1099 DWORD WINAPI GetLogicalDrives(void)
1100 {
1101     const char *config_dir = wine_get_config_dir();
1102     struct stat st;
1103     char *buffer, *dev;
1104     DWORD ret = 0;
1105     int i;
1106
1107     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1108     {
1109         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1110         return 0;
1111     }
1112     strcpy( buffer, config_dir );
1113     strcat( buffer, "/dosdevices/a:" );
1114     dev = buffer + strlen(buffer) - 2;
1115
1116     for (i = 0; i < 26; i++)
1117     {
1118         *dev = 'a' + i;
1119         if (!stat( buffer, &st )) ret |= (1 << i);
1120     }
1121     HeapFree( GetProcessHeap(), 0, buffer );
1122     return ret;
1123 }
1124
1125
1126 /***********************************************************************
1127  *           GetLogicalDriveStringsA   (KERNEL32.@)
1128  */
1129 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1130 {
1131     DWORD drives = GetLogicalDrives();
1132     UINT drive, count;
1133
1134     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1135     if ((count * 4) + 1 > len) return count * 4 + 1;
1136
1137     for (drive = 0; drive < 26; drive++)
1138     {
1139         if (drives & (1 << drive))
1140         {
1141             *buffer++ = 'a' + drive;
1142             *buffer++ = ':';
1143             *buffer++ = '\\';
1144             *buffer++ = 0;
1145         }
1146     }
1147     *buffer = 0;
1148     return count * 4;
1149 }
1150
1151
1152 /***********************************************************************
1153  *           GetLogicalDriveStringsW   (KERNEL32.@)
1154  */
1155 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1156 {
1157     DWORD drives = GetLogicalDrives();
1158     UINT drive, count;
1159
1160     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1161     if ((count * 4) + 1 > len) return count * 4 + 1;
1162
1163     for (drive = 0; drive < 26; drive++)
1164     {
1165         if (drives & (1 << drive))
1166         {
1167             *buffer++ = 'a' + drive;
1168             *buffer++ = ':';
1169             *buffer++ = '\\';
1170             *buffer++ = 0;
1171         }
1172     }
1173     *buffer = 0;
1174     return count * 4;
1175 }
1176
1177
1178 /***********************************************************************
1179  *           GetDriveTypeW   (KERNEL32.@)
1180  *
1181  * Returns the type of the disk drive specified. If root is NULL the
1182  * root of the current directory is used.
1183  *
1184  * RETURNS
1185  *
1186  *  Type of drive (from Win32 SDK):
1187  *
1188  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1189  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1190  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1191  *   DRIVE_FIXED       the disk cannot be removed from the machine
1192  *   DRIVE_REMOTE      network disk
1193  *   DRIVE_CDROM       CDROM drive
1194  *   DRIVE_RAMDISK     virtual disk in RAM
1195  */
1196 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1197 {
1198     FILE_FS_DEVICE_INFORMATION info;
1199     IO_STATUS_BLOCK io;
1200     NTSTATUS status;
1201     HANDLE handle;
1202     UINT ret;
1203
1204     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1205
1206     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1207     NtClose( handle );
1208     if (status != STATUS_SUCCESS)
1209     {
1210         SetLastError( RtlNtStatusToDosError(status) );
1211         ret = DRIVE_UNKNOWN;
1212     }
1213     else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1214     {
1215         switch (info.DeviceType)
1216         {
1217         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1218         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1219         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1220         case FILE_DEVICE_DISK_FILE_SYSTEM:
1221             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1222             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1223             else ret = DRIVE_FIXED;
1224             break;
1225         default:
1226             ret = DRIVE_UNKNOWN;
1227             break;
1228         }
1229     }
1230     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1231     return ret;
1232 }
1233
1234
1235 /***********************************************************************
1236  *           GetDriveTypeA   (KERNEL32.@)
1237  *
1238  * See GetDriveTypeW.
1239  */
1240 UINT WINAPI GetDriveTypeA( LPCSTR root )
1241 {
1242     WCHAR *rootW = NULL;
1243
1244     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1245     return GetDriveTypeW( rootW );
1246 }
1247
1248
1249 /***********************************************************************
1250  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1251  *
1252  *  This function is used to acquire the size of the available and
1253  *  total space on a logical volume.
1254  *
1255  * RETURNS
1256  *
1257  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1258  *  detailed error information.
1259  *
1260  */
1261 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1262                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1263 {
1264     FILE_FS_SIZE_INFORMATION info;
1265     IO_STATUS_BLOCK io;
1266     NTSTATUS status;
1267     HANDLE handle;
1268     UINT units;
1269
1270     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1271
1272     if (!open_device_root( root, &handle )) return FALSE;
1273
1274     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1275     NtClose( handle );
1276     if (status != STATUS_SUCCESS)
1277     {
1278         SetLastError( RtlNtStatusToDosError(status) );
1279         return FALSE;
1280     }
1281
1282     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1283     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1284     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1285     /* FIXME: this one should take quotas into account */
1286     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1287     return TRUE;
1288 }
1289
1290
1291 /***********************************************************************
1292  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1293  *
1294  * See GetDiskFreeSpaceExW.
1295  */
1296 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1297                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1298 {
1299     WCHAR *rootW = NULL;
1300
1301     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1302     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1303 }
1304
1305
1306 /***********************************************************************
1307  *           GetDiskFreeSpaceW   (KERNEL32.@)
1308  */
1309 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1310                                LPDWORD sector_bytes, LPDWORD free_clusters,
1311                                LPDWORD total_clusters )
1312 {
1313     FILE_FS_SIZE_INFORMATION info;
1314     IO_STATUS_BLOCK io;
1315     NTSTATUS status;
1316     HANDLE handle;
1317     UINT units;
1318
1319     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1320            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1321
1322     if (!open_device_root( root, &handle )) return FALSE;
1323
1324     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1325     NtClose( handle );
1326     if (status != STATUS_SUCCESS)
1327     {
1328         SetLastError( RtlNtStatusToDosError(status) );
1329         return FALSE;
1330     }
1331
1332     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1333
1334     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1335         /* cap the size and available at 2GB as per specs */
1336         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1337             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1338             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1339                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1340         }
1341         /* nr. of clusters is always <= 65335 */
1342         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1343             info.TotalAllocationUnits.QuadPart /= 2;
1344             info.AvailableAllocationUnits.QuadPart /= 2;
1345             info.SectorsPerAllocationUnit *= 2;
1346         }
1347     }
1348
1349     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1350     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1351     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1352     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1353     return TRUE;
1354 }
1355
1356
1357 /***********************************************************************
1358  *           GetDiskFreeSpaceA   (KERNEL32.@)
1359  */
1360 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1361                                LPDWORD sector_bytes, LPDWORD free_clusters,
1362                                LPDWORD total_clusters )
1363 {
1364     WCHAR *rootW = NULL;
1365
1366     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1367     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1368 }
1369
1370 /***********************************************************************
1371  *           GetVolumePathNameA   (KERNEL32.@)
1372  */
1373 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1374 {
1375     FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1376     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1377     return FALSE;
1378 }
1379
1380 /***********************************************************************
1381  *           GetVolumePathNameW   (KERNEL32.@)
1382  */
1383 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1384 {
1385     FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1386     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1387     return FALSE;
1388 }
1389
1390 /***********************************************************************
1391  *           FindFirstVolumeMountPointA   (KERNEL32.@)
1392  */
1393 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1394 {
1395     FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1396     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1397     return INVALID_HANDLE_VALUE;
1398 }
1399
1400 /***********************************************************************
1401  *           FindFirstVolumeMountPointW   (KERNEL32.@)
1402  */
1403 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1404 {
1405     FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1406     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1407     return INVALID_HANDLE_VALUE;
1408 }