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 "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[0x800];
 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, (LPCSTR)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 %d\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 %d\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  *           GetVolumeNameForVolumeMountPointA   (KERNEL32.@)
 752  */
 753 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
 754 {
 755     BOOL ret;
 756     WCHAR volumeW[50], *pathW = NULL;
 757     DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
 758
 759     TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
 760
 761     if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
 762         return FALSE;
 763
 764     if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
 765         FILE_name_WtoA( volumeW, -1, volume, len );
 766
 767     HeapFree( GetProcessHeap(), 0, pathW );
 768     return ret;
 769 }
 770
 771 /***********************************************************************
 772  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 773  */
 774 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
 775 {
 776     BOOL ret = FALSE;
 777     static const WCHAR fmt[] =
 778         { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
 779
 780     TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
 781
 782     if (!path || !path[0]) return FALSE;
 783
 784     if (size >= sizeof(fmt) / sizeof(WCHAR))
 785     {
 786         /* FIXME: will break when we support volume mounts */
 787         sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
 788         ret = TRUE;
 789     }
 790     return ret;
 791 }
 792
 793 /***********************************************************************
 794  *           DefineDosDeviceW       (KERNEL32.@)
 795  */
 796 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 797 {
 798     DWORD len, dosdev;
 799     BOOL ret = FALSE;
 800     char *path = NULL, *target, *p;
 801
 802     TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 803
 804     if (!(flags & DDD_REMOVE_DEFINITION))
 805     {
 806         if (!(flags & DDD_RAW_TARGET_PATH))
 807         {
 808             FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 809                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 810             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 811             return FALSE;
 812         }
 813
 814         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 815         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 816         {
 817             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 818             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 819         }
 820         else
 821         {
 822             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 823             return FALSE;
 824         }
 825     }
 826     else target = NULL;
 827
 828     /* first check for a DOS device */
 829
 830     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 831     {
 832         WCHAR name[5];
 833
 834         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 835         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 836         path = get_dos_device_path( name );
 837     }
 838     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 839     {
 840         path = get_dos_device_path( devname );
 841     }
 842     else SetLastError( ERROR_FILE_NOT_FOUND );
 843
 844     if (path)
 845     {
 846         if (target)
 847         {
 848             TRACE( "creating symlink %s -> %s\n", path, target );
 849             unlink( path );
 850             if (!symlink( target, path )) ret = TRUE;
 851             else FILE_SetDosError();
 852         }
 853         else
 854         {
 855             TRACE( "removing symlink %s\n", path );
 856             if (!unlink( path )) ret = TRUE;
 857             else FILE_SetDosError();
 858         }
 859         HeapFree( GetProcessHeap(), 0, path );
 860     }
 861     HeapFree( GetProcessHeap(), 0, target );
 862     return ret;
 863 }
 864
 865
 866 /***********************************************************************
 867  *           DefineDosDeviceA       (KERNEL32.@)
 868  */
 869 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 870 {
 871     WCHAR *devW, *targetW = NULL;
 872     BOOL ret;
 873
 874     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
 875     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
 876     ret = DefineDosDeviceW(flags, devW, targetW);
 877     HeapFree( GetProcessHeap(), 0, targetW );
 878     return ret;
 879 }
 880
 881
 882 /***********************************************************************
 883  *           QueryDosDeviceW   (KERNEL32.@)
 884  *
 885  * returns array of strings terminated by \0, terminated by \0
 886  */
 887 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
 888 {
 889     static const WCHAR auxW[] = {'A','U','X',0};
 890     static const WCHAR nulW[] = {'N','U','L',0};
 891     static const WCHAR prnW[] = {'P','R','N',0};
 892     static const WCHAR comW[] = {'C','O','M',0};
 893     static const WCHAR lptW[] = {'L','P','T',0};
 894     static const WCHAR rootW[] = {'A',':','\\',0};
 895     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
 896     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
 897     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
 898
 899     UNICODE_STRING nt_name;
 900     ANSI_STRING unix_name;
 901     WCHAR nt_buffer[10];
 902     NTSTATUS status;
 903
 904     if (!bufsize)
 905     {
 906         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 907         return 0;
 908     }
 909
 910     if (devname)
 911     {
 912         WCHAR *p, name[5];
 913         char *path, *link;
 914         DWORD dosdev, ret = 0;
 915
 916         if ((dosdev = RtlIsDosDeviceName_U( devname )))
 917         {
 918             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 919             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 920         }
 921         else if (devname[0] && devname[1] == ':' && !devname[2])
 922         {
 923             memcpy( name, devname, 3 * sizeof(WCHAR) );
 924         }
 925         else
 926         {
 927             SetLastError( ERROR_BAD_PATHNAME );
 928             return 0;
 929         }
 930
 931         if (!(path = get_dos_device_path( name ))) return 0;
 932         link = read_symlink( path );
 933         HeapFree( GetProcessHeap(), 0, path );
 934
 935         if (link)
 936         {
 937             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
 938             HeapFree( GetProcessHeap(), 0, link );
 939         }
 940         else if (dosdev)  /* look for device defaults */
 941         {
 942             if (!strcmpiW( name, auxW ))
 943             {
 944                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
 945                 {
 946                     memcpy( target, com1W, sizeof(com1W) );
 947                     ret = sizeof(com1W)/sizeof(WCHAR);
 948                 }
 949                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 950                 return ret;
 951             }
 952             if (!strcmpiW( name, prnW ))
 953             {
 954                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
 955                 {
 956                     memcpy( target, lpt1W, sizeof(lpt1W) );
 957                     ret = sizeof(lpt1W)/sizeof(WCHAR);
 958                 }
 959                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 960                 return ret;
 961             }
 962
 963             nt_buffer[0] = '\\';
 964             nt_buffer[1] = '?';
 965             nt_buffer[2] = '?';
 966             nt_buffer[3] = '\\';
 967             strcpyW( nt_buffer + 4, name );
 968             RtlInitUnicodeString( &nt_name, nt_buffer );
 969             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
 970             if (status) SetLastError( RtlNtStatusToDosError(status) );
 971             else
 972             {
 973                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
 974                 RtlFreeAnsiString( &unix_name );
 975             }
 976         }
 977
 978         if (ret)
 979         {
 980             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
 981             for (p = target; *p; p++) if (*p == '/') *p = '\\';
 982         }
 983
 984         return ret;
 985     }
 986     else  /* return a list of all devices */
 987     {
 988         WCHAR *p = target;
 989         int i;
 990
 991         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
 992         {
 993             SetLastError( ERROR_INSUFFICIENT_BUFFER );
 994             return 0;
 995         }
 996
 997         memcpy( p, auxW, sizeof(auxW) );
 998         p += sizeof(auxW) / sizeof(WCHAR);
 999         memcpy( p, nulW, sizeof(nulW) );
1000         p += sizeof(nulW) / sizeof(WCHAR);
1001         memcpy( p, prnW, sizeof(prnW) );
1002         p += sizeof(prnW) / sizeof(WCHAR);
1003
1004         strcpyW( nt_buffer, com0W );
1005         RtlInitUnicodeString( &nt_name, nt_buffer );
1006
1007         for (i = 1; i <= 9; i++)
1008         {
1009             nt_buffer[7] = '0' + i;
1010             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1011             {
1012                 RtlFreeAnsiString( &unix_name );
1013                 if (p + 5 >= target + bufsize)
1014                 {
1015                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1016                     return 0;
1017                 }
1018                 strcpyW( p, comW );
1019                 p[3] = '0' + i;
1020                 p[4] = 0;
1021                 p += 5;
1022             }
1023         }
1024         strcpyW( nt_buffer + 4, lptW );
1025         for (i = 1; i <= 9; i++)
1026         {
1027             nt_buffer[7] = '0' + i;
1028             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1029             {
1030                 RtlFreeAnsiString( &unix_name );
1031                 if (p + 5 >= target + bufsize)
1032                 {
1033                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1034                     return 0;
1035                 }
1036                 strcpyW( p, lptW );
1037                 p[3] = '0' + i;
1038                 p[4] = 0;
1039                 p += 5;
1040             }
1041         }
1042
1043         strcpyW( nt_buffer + 4, rootW );
1044         RtlInitUnicodeString( &nt_name, nt_buffer );
1045
1046         for (i = 0; i < 26; i++)
1047         {
1048             nt_buffer[4] = 'a' + i;
1049             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1050             {
1051                 RtlFreeAnsiString( &unix_name );
1052                 if (p + 3 >= target + bufsize)
1053                 {
1054                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1055                     return 0;
1056                 }
1057                 *p++ = 'A' + i;
1058                 *p++ = ':';
1059                 *p++ = 0;
1060             }
1061         }
1062         *p++ = 0;  /* terminating null */
1063         return p - target;
1064     }
1065 }
1066
1067
1068 /***********************************************************************
1069  *           QueryDosDeviceA   (KERNEL32.@)
1070  *
1071  * returns array of strings terminated by \0, terminated by \0
1072  */
1073 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1074 {
1075     DWORD ret = 0, retW;
1076     WCHAR *devnameW = NULL;
1077     LPWSTR targetW;
1078
1079     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1080
1081     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1082     if (!targetW)
1083     {
1084         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1085         return 0;
1086     }
1087
1088     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1089
1090     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1091
1092     HeapFree(GetProcessHeap(), 0, targetW);
1093     return ret;
1094 }
1095
1096
1097 /***********************************************************************
1098  *           GetLogicalDrives   (KERNEL32.@)
1099  */
1100 DWORD WINAPI GetLogicalDrives(void)
1101 {
1102     const char *config_dir = wine_get_config_dir();
1103     struct stat st;
1104     char *buffer, *dev;
1105     DWORD ret = 0;
1106     int i;
1107
1108     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1109     {
1110         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1111         return 0;
1112     }
1113     strcpy( buffer, config_dir );
1114     strcat( buffer, "/dosdevices/a:" );
1115     dev = buffer + strlen(buffer) - 2;
1116
1117     for (i = 0; i < 26; i++)
1118     {
1119         *dev = 'a' + i;
1120         if (!stat( buffer, &st )) ret |= (1 << i);
1121     }
1122     HeapFree( GetProcessHeap(), 0, buffer );
1123     return ret;
1124 }
1125
1126
1127 /***********************************************************************
1128  *           GetLogicalDriveStringsA   (KERNEL32.@)
1129  */
1130 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1131 {
1132     DWORD drives = GetLogicalDrives();
1133     UINT drive, count;
1134
1135     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1136     if ((count * 4) + 1 > len) return count * 4 + 1;
1137
1138     for (drive = 0; drive < 26; drive++)
1139     {
1140         if (drives & (1 << drive))
1141         {
1142             *buffer++ = 'a' + drive;
1143             *buffer++ = ':';
1144             *buffer++ = '\\';
1145             *buffer++ = 0;
1146         }
1147     }
1148     *buffer = 0;
1149     return count * 4;
1150 }
1151
1152
1153 /***********************************************************************
1154  *           GetLogicalDriveStringsW   (KERNEL32.@)
1155  */
1156 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1157 {
1158     DWORD drives = GetLogicalDrives();
1159     UINT drive, count;
1160
1161     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1162     if ((count * 4) + 1 > len) return count * 4 + 1;
1163
1164     for (drive = 0; drive < 26; drive++)
1165     {
1166         if (drives & (1 << drive))
1167         {
1168             *buffer++ = 'a' + drive;
1169             *buffer++ = ':';
1170             *buffer++ = '\\';
1171             *buffer++ = 0;
1172         }
1173     }
1174     *buffer = 0;
1175     return count * 4;
1176 }
1177
1178
1179 /***********************************************************************
1180  *           GetDriveTypeW   (KERNEL32.@)
1181  *
1182  * Returns the type of the disk drive specified. If root is NULL the
1183  * root of the current directory is used.
1184  *
1185  * RETURNS
1186  *
1187  *  Type of drive (from Win32 SDK):
1188  *
1189  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1190  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1191  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1192  *   DRIVE_FIXED       the disk cannot be removed from the machine
1193  *   DRIVE_REMOTE      network disk
1194  *   DRIVE_CDROM       CDROM drive
1195  *   DRIVE_RAMDISK     virtual disk in RAM
1196  */
1197 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1198 {
1199     FILE_FS_DEVICE_INFORMATION info;
1200     IO_STATUS_BLOCK io;
1201     NTSTATUS status;
1202     HANDLE handle;
1203     UINT ret;
1204
1205     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1206
1207     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1208     NtClose( handle );
1209     if (status != STATUS_SUCCESS)
1210     {
1211         SetLastError( RtlNtStatusToDosError(status) );
1212         ret = DRIVE_UNKNOWN;
1213     }
1214     else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1215     {
1216         switch (info.DeviceType)
1217         {
1218         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1219         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1220         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1221         case FILE_DEVICE_DISK_FILE_SYSTEM:
1222             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1223             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1224             else ret = DRIVE_FIXED;
1225             break;
1226         default:
1227             ret = DRIVE_UNKNOWN;
1228             break;
1229         }
1230     }
1231     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1232     return ret;
1233 }
1234
1235
1236 /***********************************************************************
1237  *           GetDriveTypeA   (KERNEL32.@)
1238  *
1239  * See GetDriveTypeW.
1240  */
1241 UINT WINAPI GetDriveTypeA( LPCSTR root )
1242 {
1243     WCHAR *rootW = NULL;
1244
1245     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1246     return GetDriveTypeW( rootW );
1247 }
1248
1249
1250 /***********************************************************************
1251  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1252  *
1253  *  This function is used to acquire the size of the available and
1254  *  total space on a logical volume.
1255  *
1256  * RETURNS
1257  *
1258  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1259  *  detailed error information.
1260  *
1261  */
1262 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1263                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1264 {
1265     FILE_FS_SIZE_INFORMATION info;
1266     IO_STATUS_BLOCK io;
1267     NTSTATUS status;
1268     HANDLE handle;
1269     UINT units;
1270
1271     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1272
1273     if (!open_device_root( root, &handle )) return FALSE;
1274
1275     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1276     NtClose( handle );
1277     if (status != STATUS_SUCCESS)
1278     {
1279         SetLastError( RtlNtStatusToDosError(status) );
1280         return FALSE;
1281     }
1282
1283     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1284     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1285     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1286     /* FIXME: this one should take quotas into account */
1287     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1288     return TRUE;
1289 }
1290
1291
1292 /***********************************************************************
1293  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1294  *
1295  * See GetDiskFreeSpaceExW.
1296  */
1297 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1298                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1299 {
1300     WCHAR *rootW = NULL;
1301
1302     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1303     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1304 }
1305
1306
1307 /***********************************************************************
1308  *           GetDiskFreeSpaceW   (KERNEL32.@)
1309  */
1310 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1311                                LPDWORD sector_bytes, LPDWORD free_clusters,
1312                                LPDWORD total_clusters )
1313 {
1314     FILE_FS_SIZE_INFORMATION info;
1315     IO_STATUS_BLOCK io;
1316     NTSTATUS status;
1317     HANDLE handle;
1318     UINT units;
1319
1320     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1321            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1322
1323     if (!open_device_root( root, &handle )) return FALSE;
1324
1325     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1326     NtClose( handle );
1327     if (status != STATUS_SUCCESS)
1328     {
1329         SetLastError( RtlNtStatusToDosError(status) );
1330         return FALSE;
1331     }
1332
1333     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1334
1335     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1336         /* cap the size and available at 2GB as per specs */
1337         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1338             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1339             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1340                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1341         }
1342         /* nr. of clusters is always <= 65335 */
1343         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1344             info.TotalAllocationUnits.QuadPart /= 2;
1345             info.AvailableAllocationUnits.QuadPart /= 2;
1346             info.SectorsPerAllocationUnit *= 2;
1347         }
1348     }
1349
1350     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1351     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1352     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1353     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1354     return TRUE;
1355 }
1356
1357
1358 /***********************************************************************
1359  *           GetDiskFreeSpaceA   (KERNEL32.@)
1360  */
1361 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1362                                LPDWORD sector_bytes, LPDWORD free_clusters,
1363                                LPDWORD total_clusters )
1364 {
1365     WCHAR *rootW = NULL;
1366
1367     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1368     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1369 }
1370
1371 /***********************************************************************
1372  *           GetVolumePathNameA   (KERNEL32.@)
1373  */
1374 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1375 {
1376     FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1377     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1378     return FALSE;
1379 }
1380
1381 /***********************************************************************
1382  *           GetVolumePathNameW   (KERNEL32.@)
1383  */
1384 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1385 {
1386     FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1387     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1388     return FALSE;
1389 }
1390
1391 /***********************************************************************
1392  *           FindFirstVolumeMountPointA   (KERNEL32.@)
1393  */
1394 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1395 {
1396     FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1397     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1398     return INVALID_HANDLE_VALUE;
1399 }
1400
1401 /***********************************************************************
1402  *           FindFirstVolumeMountPointW   (KERNEL32.@)
1403  */
1404 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1405 {
1406     FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1407     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1408     return INVALID_HANDLE_VALUE;
1409 }