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_PLACEHOLDER,  /* Wine placeholder for drive device */
  62     FS_FAT1216,
  63     FS_FAT32,
  64     FS_ISO9660
  65 };
  66
  67 static const char wine_placeholder[] = "Wine device placeholder";
  68
  69 static const WCHAR drive_types[][8] =
  70 {
  71     { 0 }, /* DRIVE_UNKNOWN */
  72     { 0 }, /* DRIVE_NO_ROOT_DIR */
  73     {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
  74     {'h','d',0}, /* DRIVE_FIXED */
  75     {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
  76     {'c','d','r','o','m',0}, /* DRIVE_CDROM */
  77     {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
  78 };
  79
  80 /* read a Unix symlink; returned buffer must be freed by caller */
  81 static char *read_symlink( const char *path )
  82 {
  83     char *buffer;
  84     int ret, size = 128;
  85
  86     for (;;)
  87     {
  88         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
  89         {
  90             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
  91             return 0;
  92         }
  93         ret = readlink( path, buffer, size );
  94         if (ret == -1)
  95         {
  96             FILE_SetDosError();
  97             HeapFree( GetProcessHeap(), 0, buffer );
  98             return 0;
  99         }
 100         if (ret != size)
 101         {
 102             buffer[ret] = 0;
 103             return buffer;
 104         }
 105         HeapFree( GetProcessHeap(), 0, buffer );
 106         size *= 2;
 107     }
 108 }
 109
 110 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
 111 static char *get_dos_device_path( LPCWSTR name )
 112 {
 113     const char *config_dir = wine_get_config_dir();
 114     char *buffer, *dev;
 115     int i;
 116
 117     if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
 118                               strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
 119     {
 120         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 121         return NULL;
 122     }
 123     strcpy( buffer, config_dir );
 124     strcat( buffer, "/dosdevices/" );
 125     dev = buffer + strlen(buffer);
 126     /* no codepage conversion, DOS device names are ASCII anyway */
 127     for (i = 0; i < 5; i++)
 128         if (!(dev[i] = (char)tolowerW(name[i]))) break;
 129     dev[5] = 0;
 130     return buffer;
 131 }
 132
 133
 134 /* open a handle to a device root */
 135 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
 136 {
 137     static const WCHAR default_rootW[] = {'\\',0};
 138     UNICODE_STRING nt_name;
 139     OBJECT_ATTRIBUTES attr;
 140     IO_STATUS_BLOCK io;
 141     NTSTATUS status;
 142
 143     if (!root) root = default_rootW;
 144     if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
 145     {
 146         SetLastError( ERROR_PATH_NOT_FOUND );
 147         return FALSE;
 148     }
 149     attr.Length = sizeof(attr);
 150     attr.RootDirectory = 0;
 151     attr.Attributes = OBJ_CASE_INSENSITIVE;
 152     attr.ObjectName = &nt_name;
 153     attr.SecurityDescriptor = NULL;
 154     attr.SecurityQualityOfService = NULL;
 155
 156     status = NtOpenFile( handle, 0, &attr, &io, 0,
 157                          FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
 158     RtlFreeUnicodeString( &nt_name );
 159     if (status != STATUS_SUCCESS)
 160     {
 161         SetLastError( RtlNtStatusToDosError(status) );
 162         return FALSE;
 163     }
 164     return TRUE;
 165 }
 166
 167 /* get the label by reading it from a file at the root of the filesystem */
 168 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
 169 {
 170     HANDLE handle;
 171     WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 172
 173     labelW[0] = device[4];
 174     handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 175                           OPEN_EXISTING, 0, 0 );
 176     if (handle != INVALID_HANDLE_VALUE)
 177     {
 178         char buffer[256], *p;
 179         DWORD size;
 180
 181         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 182         CloseHandle( handle );
 183         p = buffer + size;
 184         while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
 185         *p = 0;
 186         if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
 187             label[len-1] = 0;
 188     }
 189     else label[0] = 0;
 190 }
 191
 192 /* get the serial number by reading it from a file at the root of the filesystem */
 193 static DWORD get_filesystem_serial( const WCHAR *device )
 194 {
 195     HANDLE handle;
 196     WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
 197
 198     serialW[0] = device[4];
 199     handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 200                           OPEN_EXISTING, 0, 0 );
 201     if (handle != INVALID_HANDLE_VALUE)
 202     {
 203         char buffer[32];
 204         DWORD size;
 205
 206         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 207         CloseHandle( handle );
 208         buffer[size] = 0;
 209         return strtoul( buffer, NULL, 16 );
 210     }
 211     else return 0;
 212 }
 213
 214 /* fetch the type of a drive from the registry */
 215 static UINT get_registry_drive_type( const WCHAR *root )
 216 {
 217     static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
 218                                              'S','o','f','t','w','a','r','e','\\',
 219                                              'W','i','n','e','\\',
 220                                              'D','r','i','v','e','s',0 };
 221     OBJECT_ATTRIBUTES attr;
 222     UNICODE_STRING nameW;
 223     HANDLE hkey;
 224     DWORD dummy;
 225     UINT ret = DRIVE_UNKNOWN;
 226     char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
 227     WCHAR driveW[] = {'A',':',0};
 228
 229     attr.Length = sizeof(attr);
 230     attr.RootDirectory = 0;
 231     attr.ObjectName = &nameW;
 232     attr.Attributes = 0;
 233     attr.SecurityDescriptor = NULL;
 234     attr.SecurityQualityOfService = NULL;
 235     RtlInitUnicodeString( &nameW, drive_types_keyW );
 236     /* @@ Wine registry key: HKLM\Software\Wine\Drives */
 237     if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
 238
 239     if (root) driveW[0] = root[0];
 240     else
 241     {
 242         WCHAR path[MAX_PATH];
 243         GetCurrentDirectoryW( MAX_PATH, path );
 244         driveW[0] = path[0];
 245     }
 246
 247     RtlInitUnicodeString( &nameW, driveW );
 248     if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 249     {
 250         unsigned int i;
 251         WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 252
 253         for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
 254         {
 255             if (!strcmpiW( data, drive_types[i] ))
 256             {
 257                 ret = i;
 258                 break;
 259             }
 260         }
 261     }
 262     NtClose( hkey );
 263     return ret;
 264 }
 265
 266
 267 /******************************************************************
 268  *              VOLUME_FindCdRomDataBestVoldesc
 269  */
 270 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
 271 {
 272     BYTE cur_vd_type, max_vd_type = 0;
 273     BYTE buffer[0x800];
 274     DWORD size, offs, best_offs = 0, extra_offs = 0;
 275
 276     for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
 277     {
 278         /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
 279          * the volume label is displaced forward by 8
 280          */
 281         if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
 282         if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
 283         if (size != sizeof(buffer)) break;
 284         /* check for non-ISO9660 signature */
 285         if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
 286         cur_vd_type = buffer[extra_offs];
 287         if (cur_vd_type == 0xff) /* voldesc set terminator */
 288             break;
 289         if (cur_vd_type > max_vd_type)
 290         {
 291             max_vd_type = cur_vd_type;
 292             best_offs = offs + extra_offs;
 293         }
 294     }
 295     return best_offs;
 296 }
 297
 298
 299 /***********************************************************************
 300  *           VOLUME_ReadFATSuperblock
 301  */
 302 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
 303 {
 304     DWORD size;
 305
 306     /* try a fixed disk, with a FAT partition */
 307     if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
 308         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
 309         return FS_ERROR;
 310
 311     if (size >= sizeof(wine_placeholder)-1 &&
 312         !memcmp( buff, wine_placeholder, sizeof(wine_placeholder)-1 ))
 313         return FS_PLACEHOLDER;
 314
 315     if (size != SUPERBLOCK_SIZE) return FS_ERROR;
 316
 317     /* FIXME: do really all FAT have their name beginning with
 318      * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
 319      */
 320     if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
 321     {
 322         /* guess which type of FAT we have */
 323         int reasonable;
 324         unsigned int sectors,
 325                      sect_per_fat,
 326                      total_sectors,
 327                      num_boot_sectors,
 328                      num_fats,
 329                      num_root_dir_ents,
 330                      bytes_per_sector,
 331                      sectors_per_cluster,
 332                      nclust;
 333         sect_per_fat = GETWORD(buff, 0x16);
 334         if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
 335         total_sectors = GETWORD(buff, 0x13);
 336         if (!total_sectors)
 337             total_sectors = GETLONG(buff, 0x20);
 338         num_boot_sectors = GETWORD(buff, 0x0e);
 339         num_fats =  buff[0x10];
 340         num_root_dir_ents = GETWORD(buff, 0x11);
 341         bytes_per_sector = GETWORD(buff, 0x0b);
 342         sectors_per_cluster = buff[0x0d];
 343         /* check if the parameters are reasonable and will not cause
 344          * arithmetic errors in the calculation */
 345         reasonable = num_boot_sectors < 16 &&
 346                      num_fats < 16 &&
 347                      bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
 348                      sectors_per_cluster > 1;
 349         if (!reasonable) return FS_UNKNOWN;
 350         sectors =  total_sectors - num_boot_sectors - num_fats * sect_per_fat -
 351             (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
 352         nclust = sectors / sectors_per_cluster;
 353         if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
 354                 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
 355         if (nclust < 65525)
 356         {
 357             if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
 358                     !memcmp(buff+0x36, "FAT", 3))
 359                 return FS_FAT1216;
 360         }
 361     }
 362     return FS_UNKNOWN;
 363 }
 364
 365
 366 /***********************************************************************
 367  *           VOLUME_ReadCDSuperblock
 368  */
 369 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
 370 {
 371     DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
 372
 373     if (!offs) return FS_UNKNOWN;
 374
 375     if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
 376         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 377         size != SUPERBLOCK_SIZE)
 378         return FS_ERROR;
 379
 380     /* check for iso9660 present */
 381     if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
 382     return FS_UNKNOWN;
 383 }
 384
 385
 386 /**************************************************************************
 387  *                              VOLUME_GetSuperblockLabel
 388  */
 389 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
 390                                        WCHAR *label, DWORD len )
 391 {
 392     const BYTE *label_ptr = NULL;
 393     DWORD label_len;
 394
 395     switch(type)
 396     {
 397     case FS_ERROR:
 398     case FS_UNKNOWN:
 399         label_len = 0;
 400         break;
 401     case FS_PLACEHOLDER:
 402         get_filesystem_label( device, label, len );
 403         break;
 404     case FS_FAT1216:
 405         label_ptr = superblock + 0x2b;
 406         label_len = 11;
 407         break;
 408     case FS_FAT32:
 409         label_ptr = superblock + 0x47;
 410         label_len = 11;
 411         break;
 412     case FS_ISO9660:
 413         {
 414             BYTE ver = superblock[0x5a];
 415
 416             if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f &&  /* Unicode ID */
 417                 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
 418             { /* yippee, unicode */
 419                 unsigned int i;
 420
 421                 if (len > 17) len = 17;
 422                 for (i = 0; i < len-1; i++)
 423                     label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
 424                 label[i] = 0;
 425                 while (i && label[i-1] == ' ') label[--i] = 0;
 426                 return;
 427             }
 428             label_ptr = superblock + 40;
 429             label_len = 32;
 430             break;
 431         }
 432     }
 433     if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
 434                                            &label_len, (LPCSTR)label_ptr, label_len );
 435     label_len /= sizeof(WCHAR);
 436     label[label_len] = 0;
 437     while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
 438 }
 439
 440
 441 /**************************************************************************
 442  *                              VOLUME_GetSuperblockSerial
 443  */
 444 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
 445 {
 446     switch(type)
 447     {
 448     case FS_ERROR:
 449     case FS_UNKNOWN:
 450         break;
 451     case FS_PLACEHOLDER:
 452         return get_filesystem_serial( device );
 453     case FS_FAT1216:
 454         return GETLONG( superblock, 0x27 );
 455     case FS_FAT32:
 456         return GETLONG( superblock, 0x33 );
 457     case FS_ISO9660:
 458         {
 459             BYTE sum[4];
 460             int i;
 461
 462             sum[0] = sum[1] = sum[2] = sum[3] = 0;
 463             for (i = 0; i < 2048; i += 4)
 464             {
 465                 /* DON'T optimize this into DWORD !! (breaks overflow) */
 466                 sum[0] += superblock[i+0];
 467                 sum[1] += superblock[i+1];
 468                 sum[2] += superblock[i+2];
 469                 sum[3] += superblock[i+3];
 470             }
 471             /*
 472              * OK, another braindead one... argh. Just believe it.
 473              * Me$$ysoft chose to reverse the serial number in NT4/W2K.
 474              * It's true and nobody will ever be able to change it.
 475              */
 476             if (GetVersion() & 0x80000000)
 477                 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
 478             else
 479                 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
 480         }
 481     }
 482     return 0;
 483 }
 484
 485
 486 /**************************************************************************
 487  *                              VOLUME_GetAudioCDSerial
 488  */
 489 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
 490 {
 491     DWORD serial = 0;
 492     int i;
 493
 494     for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
 495         serial += ((toc->TrackData[i].Address[1] << 16) |
 496                    (toc->TrackData[i].Address[2] << 8) |
 497                    toc->TrackData[i].Address[3]);
 498
 499     /*
 500      * dwStart, dwEnd collect the beginning and end of the disc respectively, in
 501      * frames.
 502      * There it is collected for correcting the serial when there are less than
 503      * 3 tracks.
 504      */
 505     if (toc->LastTrack - toc->FirstTrack + 1 < 3)
 506     {
 507         DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
 508         DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
 509         serial += dwEnd - dwStart;
 510     }
 511     return serial;
 512 }
 513
 514
 515 /***********************************************************************
 516  *           GetVolumeInformationW   (KERNEL32.@)
 517  */
 518 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
 519                                    DWORD *serial, DWORD *filename_len, DWORD *flags,
 520                                    LPWSTR fsname, DWORD fsname_len )
 521 {
 522     static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
 523     static const WCHAR fatW[] = {'F','A','T',0};
 524     static const WCHAR ntfsW[] = {'N','T','F','S',0};
 525     static const WCHAR cdfsW[] = {'C','D','F','S',0};
 526
 527     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 528     HANDLE handle;
 529     enum fs_type type = FS_UNKNOWN;
 530
 531     if (!root)
 532     {
 533         WCHAR path[MAX_PATH];
 534         GetCurrentDirectoryW( MAX_PATH, path );
 535         device[4] = path[0];
 536     }
 537     else
 538     {
 539         if (!root[0] || root[1] != ':')
 540         {
 541             SetLastError( ERROR_INVALID_NAME );
 542             return FALSE;
 543         }
 544         device[4] = root[0];
 545     }
 546
 547     /* try to open the device */
 548
 549     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 550                           NULL, OPEN_EXISTING, 0, 0 );
 551     if (handle != INVALID_HANDLE_VALUE)
 552     {
 553         BYTE superblock[SUPERBLOCK_SIZE];
 554         CDROM_TOC toc;
 555         DWORD br;
 556
 557         /* check for audio CD */
 558         /* FIXME: we only check the first track for now */
 559         if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
 560         {
 561             if (!(toc.TrackData[0].Control & 0x04))  /* audio track */
 562             {
 563                 TRACE( "%s: found audio CD\n", debugstr_w(device) );
 564                 if (label) lstrcpynW( label, audiocdW, label_len );
 565                 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
 566                 CloseHandle( handle );
 567                 type = FS_ISO9660;
 568                 goto fill_fs_info;
 569             }
 570             type = VOLUME_ReadCDSuperblock( handle, superblock );
 571         }
 572         else
 573         {
 574             type = VOLUME_ReadFATSuperblock( handle, superblock );
 575             if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 576         }
 577         CloseHandle( handle );
 578         TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
 579         if (type == FS_ERROR) return FALSE;
 580
 581         if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
 582         if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
 583         goto fill_fs_info;
 584     }
 585     else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 586
 587     /* we couldn't open the device, fallback to default strategy */
 588
 589     switch(GetDriveTypeW( root ))
 590     {
 591     case DRIVE_UNKNOWN:
 592     case DRIVE_NO_ROOT_DIR:
 593         SetLastError( ERROR_NOT_READY );
 594         return FALSE;
 595     case DRIVE_REMOVABLE:
 596     case DRIVE_FIXED:
 597     case DRIVE_REMOTE:
 598     case DRIVE_RAMDISK:
 599         type = FS_UNKNOWN;
 600         break;
 601     case DRIVE_CDROM:
 602         type = FS_ISO9660;
 603         break;
 604     }
 605
 606     if (label && label_len) get_filesystem_label( device, label, label_len );
 607     if (serial) *serial = get_filesystem_serial( device );
 608
 609 fill_fs_info:  /* now fill in the information that depends on the file system type */
 610
 611     switch(type)
 612     {
 613     case FS_ISO9660:
 614         if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
 615         if (filename_len) *filename_len = 221;
 616         if (flags) *flags = FILE_READ_ONLY_VOLUME;
 617         break;
 618     case FS_FAT1216:
 619     case FS_FAT32:
 620         if (fsname) lstrcpynW( fsname, fatW, fsname_len );
 621         if (filename_len) *filename_len = 255;
 622         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;  /* FIXME */
 623         break;
 624     default:
 625         if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
 626         if (filename_len) *filename_len = 255;
 627         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
 628         break;
 629     }
 630     return TRUE;
 631 }
 632
 633
 634 /***********************************************************************
 635  *           GetVolumeInformationA   (KERNEL32.@)
 636  */
 637 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
 638                                    DWORD label_len, DWORD *serial,
 639                                    DWORD *filename_len, DWORD *flags,
 640                                    LPSTR fsname, DWORD fsname_len )
 641 {
 642     WCHAR *rootW = NULL;
 643     LPWSTR labelW, fsnameW;
 644     BOOL ret;
 645
 646     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 647
 648     labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
 649     fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
 650
 651     if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
 652                                     filename_len, flags, fsnameW, fsname_len)))
 653     {
 654         if (label) FILE_name_WtoA( labelW, -1, label, label_len );
 655         if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
 656     }
 657
 658     HeapFree( GetProcessHeap(), 0, labelW );
 659     HeapFree( GetProcessHeap(), 0, fsnameW );
 660     return ret;
 661 }
 662
 663
 664
 665 /***********************************************************************
 666  *           SetVolumeLabelW   (KERNEL32.@)
 667  */
 668 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
 669 {
 670     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 671     HANDLE handle;
 672     enum fs_type type = FS_UNKNOWN;
 673
 674     if (!root)
 675     {
 676         WCHAR path[MAX_PATH];
 677         GetCurrentDirectoryW( MAX_PATH, path );
 678         device[4] = path[0];
 679     }
 680     else
 681     {
 682         if (!root[0] || root[1] != ':')
 683         {
 684             SetLastError( ERROR_INVALID_NAME );
 685             return FALSE;
 686         }
 687         device[4] = root[0];
 688     }
 689
 690     /* try to open the device */
 691
 692     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 693                           NULL, OPEN_EXISTING, 0, 0 );
 694     if (handle != INVALID_HANDLE_VALUE)
 695     {
 696         BYTE superblock[SUPERBLOCK_SIZE];
 697
 698         type = VOLUME_ReadFATSuperblock( handle, superblock );
 699         if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 700         CloseHandle( handle );
 701         if (type != FS_UNKNOWN)
 702         {
 703             /* we can't set the label on FAT or CDROM file systems */
 704             TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
 705             SetLastError( ERROR_ACCESS_DENIED );
 706             return FALSE;
 707         }
 708     }
 709     else
 710     {
 711         TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 712         if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
 713     }
 714
 715     /* we couldn't open the device, fallback to default strategy */
 716
 717     switch(GetDriveTypeW( root ))
 718     {
 719     case DRIVE_UNKNOWN:
 720     case DRIVE_NO_ROOT_DIR:
 721         SetLastError( ERROR_NOT_READY );
 722         break;
 723     case DRIVE_REMOVABLE:
 724     case DRIVE_FIXED:
 725         {
 726             WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 727
 728             labelW[0] = device[4];
 729             handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 730                                   CREATE_ALWAYS, 0, 0 );
 731             if (handle != INVALID_HANDLE_VALUE)
 732             {
 733                 char buffer[64];
 734                 DWORD size;
 735
 736                 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
 737                     buffer[sizeof(buffer)-1] = 0;
 738                 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
 739                 CloseHandle( handle );
 740                 return TRUE;
 741             }
 742             break;
 743         }
 744     case DRIVE_REMOTE:
 745     case DRIVE_RAMDISK:
 746     case DRIVE_CDROM:
 747         SetLastError( ERROR_ACCESS_DENIED );
 748         break;
 749     }
 750     return FALSE;
 751 }
 752
 753 /***********************************************************************
 754  *           SetVolumeLabelA   (KERNEL32.@)
 755  */
 756 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
 757 {
 758     WCHAR *rootW = NULL, *volnameW = NULL;
 759     BOOL ret;
 760
 761     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 762     if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
 763     ret = SetVolumeLabelW( rootW, volnameW );
 764     HeapFree( GetProcessHeap(), 0, volnameW );
 765     return ret;
 766 }
 767
 768
 769 /***********************************************************************
 770  *           GetVolumeNameForVolumeMountPointA   (KERNEL32.@)
 771  */
 772 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
 773 {
 774     BOOL ret;
 775     WCHAR volumeW[50], *pathW = NULL;
 776     DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
 777
 778     TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
 779
 780     if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
 781         return FALSE;
 782
 783     if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
 784         FILE_name_WtoA( volumeW, -1, volume, len );
 785
 786     HeapFree( GetProcessHeap(), 0, pathW );
 787     return ret;
 788 }
 789
 790 /***********************************************************************
 791  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 792  */
 793 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
 794 {
 795     BOOL ret = FALSE;
 796     static const WCHAR fmt[] =
 797         { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
 798
 799     TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
 800
 801     if (!path || !path[0]) return FALSE;
 802
 803     if (size >= sizeof(fmt) / sizeof(WCHAR))
 804     {
 805         /* FIXME: will break when we support volume mounts */
 806         sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
 807         ret = TRUE;
 808     }
 809     return ret;
 810 }
 811
 812 /***********************************************************************
 813  *           DefineDosDeviceW       (KERNEL32.@)
 814  */
 815 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 816 {
 817     DWORD len, dosdev;
 818     BOOL ret = FALSE;
 819     char *path = NULL, *target, *p;
 820
 821     TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 822
 823     if (!(flags & DDD_REMOVE_DEFINITION))
 824     {
 825         if (!(flags & DDD_RAW_TARGET_PATH))
 826         {
 827             FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 828                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 829             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 830             return FALSE;
 831         }
 832
 833         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 834         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 835         {
 836             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 837             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 838         }
 839         else
 840         {
 841             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 842             return FALSE;
 843         }
 844     }
 845     else target = NULL;
 846
 847     /* first check for a DOS device */
 848
 849     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 850     {
 851         WCHAR name[5];
 852
 853         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 854         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 855         path = get_dos_device_path( name );
 856     }
 857     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 858     {
 859         path = get_dos_device_path( devname );
 860     }
 861     else SetLastError( ERROR_FILE_NOT_FOUND );
 862
 863     if (path)
 864     {
 865         if (target)
 866         {
 867             TRACE( "creating symlink %s -> %s\n", path, target );
 868             unlink( path );
 869             if (!symlink( target, path )) ret = TRUE;
 870             else FILE_SetDosError();
 871         }
 872         else
 873         {
 874             TRACE( "removing symlink %s\n", path );
 875             if (!unlink( path )) ret = TRUE;
 876             else FILE_SetDosError();
 877         }
 878         HeapFree( GetProcessHeap(), 0, path );
 879     }
 880     HeapFree( GetProcessHeap(), 0, target );
 881     return ret;
 882 }
 883
 884
 885 /***********************************************************************
 886  *           DefineDosDeviceA       (KERNEL32.@)
 887  */
 888 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 889 {
 890     WCHAR *devW, *targetW = NULL;
 891     BOOL ret;
 892
 893     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
 894     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
 895     ret = DefineDosDeviceW(flags, devW, targetW);
 896     HeapFree( GetProcessHeap(), 0, targetW );
 897     return ret;
 898 }
 899
 900
 901 /***********************************************************************
 902  *           QueryDosDeviceW   (KERNEL32.@)
 903  *
 904  * returns array of strings terminated by \0, terminated by \0
 905  */
 906 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
 907 {
 908     static const WCHAR auxW[] = {'A','U','X',0};
 909     static const WCHAR nulW[] = {'N','U','L',0};
 910     static const WCHAR prnW[] = {'P','R','N',0};
 911     static const WCHAR comW[] = {'C','O','M',0};
 912     static const WCHAR lptW[] = {'L','P','T',0};
 913     static const WCHAR rootW[] = {'A',':','\\',0};
 914     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
 915     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
 916     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
 917
 918     UNICODE_STRING nt_name;
 919     ANSI_STRING unix_name;
 920     WCHAR nt_buffer[10];
 921     NTSTATUS status;
 922
 923     if (!bufsize)
 924     {
 925         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 926         return 0;
 927     }
 928
 929     if (devname)
 930     {
 931         WCHAR *p, name[5];
 932         char *path, *link;
 933         DWORD dosdev, ret = 0;
 934
 935         if ((dosdev = RtlIsDosDeviceName_U( devname )))
 936         {
 937             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 938             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 939         }
 940         else if (devname[0] && devname[1] == ':' && !devname[2])
 941         {
 942             memcpy( name, devname, 3 * sizeof(WCHAR) );
 943         }
 944         else
 945         {
 946             SetLastError( ERROR_BAD_PATHNAME );
 947             return 0;
 948         }
 949
 950         if (!(path = get_dos_device_path( name ))) return 0;
 951         link = read_symlink( path );
 952         HeapFree( GetProcessHeap(), 0, path );
 953
 954         if (link)
 955         {
 956             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
 957             HeapFree( GetProcessHeap(), 0, link );
 958         }
 959         else if (dosdev)  /* look for device defaults */
 960         {
 961             if (!strcmpiW( name, auxW ))
 962             {
 963                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
 964                 {
 965                     memcpy( target, com1W, sizeof(com1W) );
 966                     ret = sizeof(com1W)/sizeof(WCHAR);
 967                 }
 968                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 969                 return ret;
 970             }
 971             if (!strcmpiW( name, prnW ))
 972             {
 973                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
 974                 {
 975                     memcpy( target, lpt1W, sizeof(lpt1W) );
 976                     ret = sizeof(lpt1W)/sizeof(WCHAR);
 977                 }
 978                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 979                 return ret;
 980             }
 981
 982             nt_buffer[0] = '\\';
 983             nt_buffer[1] = '?';
 984             nt_buffer[2] = '?';
 985             nt_buffer[3] = '\\';
 986             strcpyW( nt_buffer + 4, name );
 987             RtlInitUnicodeString( &nt_name, nt_buffer );
 988             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
 989             if (status) SetLastError( RtlNtStatusToDosError(status) );
 990             else
 991             {
 992                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
 993                 RtlFreeAnsiString( &unix_name );
 994             }
 995         }
 996
 997         if (ret)
 998         {
 999             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
1000             for (p = target; *p; p++) if (*p == '/') *p = '\\';
1001         }
1002
1003         return ret;
1004     }
1005     else  /* return a list of all devices */
1006     {
1007         WCHAR *p = target;
1008         int i;
1009
1010         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1011         {
1012             SetLastError( ERROR_INSUFFICIENT_BUFFER );
1013             return 0;
1014         }
1015
1016         memcpy( p, auxW, sizeof(auxW) );
1017         p += sizeof(auxW) / sizeof(WCHAR);
1018         memcpy( p, nulW, sizeof(nulW) );
1019         p += sizeof(nulW) / sizeof(WCHAR);
1020         memcpy( p, prnW, sizeof(prnW) );
1021         p += sizeof(prnW) / sizeof(WCHAR);
1022
1023         strcpyW( nt_buffer, com0W );
1024         RtlInitUnicodeString( &nt_name, nt_buffer );
1025
1026         for (i = 1; i <= 9; i++)
1027         {
1028             nt_buffer[7] = '0' + i;
1029             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1030             {
1031                 RtlFreeAnsiString( &unix_name );
1032                 if (p + 5 >= target + bufsize)
1033                 {
1034                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1035                     return 0;
1036                 }
1037                 strcpyW( p, comW );
1038                 p[3] = '0' + i;
1039                 p[4] = 0;
1040                 p += 5;
1041             }
1042         }
1043         strcpyW( nt_buffer + 4, lptW );
1044         for (i = 1; i <= 9; i++)
1045         {
1046             nt_buffer[7] = '0' + i;
1047             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1048             {
1049                 RtlFreeAnsiString( &unix_name );
1050                 if (p + 5 >= target + bufsize)
1051                 {
1052                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1053                     return 0;
1054                 }
1055                 strcpyW( p, lptW );
1056                 p[3] = '0' + i;
1057                 p[4] = 0;
1058                 p += 5;
1059             }
1060         }
1061
1062         strcpyW( nt_buffer + 4, rootW );
1063         RtlInitUnicodeString( &nt_name, nt_buffer );
1064
1065         for (i = 0; i < 26; i++)
1066         {
1067             nt_buffer[4] = 'a' + i;
1068             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1069             {
1070                 RtlFreeAnsiString( &unix_name );
1071                 if (p + 3 >= target + bufsize)
1072                 {
1073                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1074                     return 0;
1075                 }
1076                 *p++ = 'A' + i;
1077                 *p++ = ':';
1078                 *p++ = 0;
1079             }
1080         }
1081         *p++ = 0;  /* terminating null */
1082         return p - target;
1083     }
1084 }
1085
1086
1087 /***********************************************************************
1088  *           QueryDosDeviceA   (KERNEL32.@)
1089  *
1090  * returns array of strings terminated by \0, terminated by \0
1091  */
1092 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1093 {
1094     DWORD ret = 0, retW;
1095     WCHAR *devnameW = NULL;
1096     LPWSTR targetW;
1097
1098     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1099
1100     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1101     if (!targetW)
1102     {
1103         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1104         return 0;
1105     }
1106
1107     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1108
1109     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1110
1111     HeapFree(GetProcessHeap(), 0, targetW);
1112     return ret;
1113 }
1114
1115
1116 /***********************************************************************
1117  *           GetLogicalDrives   (KERNEL32.@)
1118  */
1119 DWORD WINAPI GetLogicalDrives(void)
1120 {
1121     const char *config_dir = wine_get_config_dir();
1122     struct stat st;
1123     char *buffer, *dev;
1124     DWORD ret = 0;
1125     int i;
1126
1127     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1128     {
1129         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1130         return 0;
1131     }
1132     strcpy( buffer, config_dir );
1133     strcat( buffer, "/dosdevices/a:" );
1134     dev = buffer + strlen(buffer) - 2;
1135
1136     for (i = 0; i < 26; i++)
1137     {
1138         *dev = 'a' + i;
1139         if (!stat( buffer, &st )) ret |= (1 << i);
1140     }
1141     HeapFree( GetProcessHeap(), 0, buffer );
1142     return ret;
1143 }
1144
1145
1146 /***********************************************************************
1147  *           GetLogicalDriveStringsA   (KERNEL32.@)
1148  */
1149 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1150 {
1151     DWORD drives = GetLogicalDrives();
1152     UINT drive, count;
1153
1154     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1155     if ((count * 4) + 1 > len) return count * 4 + 1;
1156
1157     for (drive = 0; drive < 26; drive++)
1158     {
1159         if (drives & (1 << drive))
1160         {
1161             *buffer++ = 'a' + drive;
1162             *buffer++ = ':';
1163             *buffer++ = '\\';
1164             *buffer++ = 0;
1165         }
1166     }
1167     *buffer = 0;
1168     return count * 4;
1169 }
1170
1171
1172 /***********************************************************************
1173  *           GetLogicalDriveStringsW   (KERNEL32.@)
1174  */
1175 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1176 {
1177     DWORD drives = GetLogicalDrives();
1178     UINT drive, count;
1179
1180     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1181     if ((count * 4) + 1 > len) return count * 4 + 1;
1182
1183     for (drive = 0; drive < 26; drive++)
1184     {
1185         if (drives & (1 << drive))
1186         {
1187             *buffer++ = 'a' + drive;
1188             *buffer++ = ':';
1189             *buffer++ = '\\';
1190             *buffer++ = 0;
1191         }
1192     }
1193     *buffer = 0;
1194     return count * 4;
1195 }
1196
1197
1198 /***********************************************************************
1199  *           GetDriveTypeW   (KERNEL32.@)
1200  *
1201  * Returns the type of the disk drive specified. If root is NULL the
1202  * root of the current directory is used.
1203  *
1204  * RETURNS
1205  *
1206  *  Type of drive (from Win32 SDK):
1207  *
1208  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1209  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1210  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1211  *   DRIVE_FIXED       the disk cannot be removed from the machine
1212  *   DRIVE_REMOTE      network disk
1213  *   DRIVE_CDROM       CDROM drive
1214  *   DRIVE_RAMDISK     virtual disk in RAM
1215  */
1216 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1217 {
1218     FILE_FS_DEVICE_INFORMATION info;
1219     IO_STATUS_BLOCK io;
1220     NTSTATUS status;
1221     HANDLE handle;
1222     UINT ret;
1223
1224     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1225
1226     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1227     NtClose( handle );
1228     if (status != STATUS_SUCCESS)
1229     {
1230         SetLastError( RtlNtStatusToDosError(status) );
1231         ret = DRIVE_UNKNOWN;
1232     }
1233     else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1234     {
1235         switch (info.DeviceType)
1236         {
1237         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1238         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1239         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1240         case FILE_DEVICE_DISK_FILE_SYSTEM:
1241             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1242             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1243             else ret = DRIVE_FIXED;
1244             break;
1245         default:
1246             ret = DRIVE_UNKNOWN;
1247             break;
1248         }
1249     }
1250     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1251     return ret;
1252 }
1253
1254
1255 /***********************************************************************
1256  *           GetDriveTypeA   (KERNEL32.@)
1257  *
1258  * See GetDriveTypeW.
1259  */
1260 UINT WINAPI GetDriveTypeA( LPCSTR root )
1261 {
1262     WCHAR *rootW = NULL;
1263
1264     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1265     return GetDriveTypeW( rootW );
1266 }
1267
1268
1269 /***********************************************************************
1270  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1271  *
1272  *  This function is used to acquire the size of the available and
1273  *  total space on a logical volume.
1274  *
1275  * RETURNS
1276  *
1277  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1278  *  detailed error information.
1279  *
1280  */
1281 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1282                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1283 {
1284     FILE_FS_SIZE_INFORMATION info;
1285     IO_STATUS_BLOCK io;
1286     NTSTATUS status;
1287     HANDLE handle;
1288     UINT units;
1289
1290     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1291
1292     if (!open_device_root( root, &handle )) return FALSE;
1293
1294     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1295     NtClose( handle );
1296     if (status != STATUS_SUCCESS)
1297     {
1298         SetLastError( RtlNtStatusToDosError(status) );
1299         return FALSE;
1300     }
1301
1302     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1303     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1304     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1305     /* FIXME: this one should take quotas into account */
1306     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1307     return TRUE;
1308 }
1309
1310
1311 /***********************************************************************
1312  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1313  *
1314  * See GetDiskFreeSpaceExW.
1315  */
1316 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1317                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1318 {
1319     WCHAR *rootW = NULL;
1320
1321     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1322     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1323 }
1324
1325
1326 /***********************************************************************
1327  *           GetDiskFreeSpaceW   (KERNEL32.@)
1328  */
1329 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1330                                LPDWORD sector_bytes, LPDWORD free_clusters,
1331                                LPDWORD total_clusters )
1332 {
1333     FILE_FS_SIZE_INFORMATION info;
1334     IO_STATUS_BLOCK io;
1335     NTSTATUS status;
1336     HANDLE handle;
1337     UINT units;
1338
1339     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1340            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1341
1342     if (!open_device_root( root, &handle )) return FALSE;
1343
1344     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1345     NtClose( handle );
1346     if (status != STATUS_SUCCESS)
1347     {
1348         SetLastError( RtlNtStatusToDosError(status) );
1349         return FALSE;
1350     }
1351
1352     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1353
1354     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1355         /* cap the size and available at 2GB as per specs */
1356         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1357             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1358             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1359                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1360         }
1361         /* nr. of clusters is always <= 65335 */
1362         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1363             info.TotalAllocationUnits.QuadPart /= 2;
1364             info.AvailableAllocationUnits.QuadPart /= 2;
1365             info.SectorsPerAllocationUnit *= 2;
1366         }
1367     }
1368
1369     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1370     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1371     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1372     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1373     return TRUE;
1374 }
1375
1376
1377 /***********************************************************************
1378  *           GetDiskFreeSpaceA   (KERNEL32.@)
1379  */
1380 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1381                                LPDWORD sector_bytes, LPDWORD free_clusters,
1382                                LPDWORD total_clusters )
1383 {
1384     WCHAR *rootW = NULL;
1385
1386     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1387     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1388 }
1389
1390 /***********************************************************************
1391  *           GetVolumePathNameA   (KERNEL32.@)
1392  */
1393 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1394 {
1395     FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1396     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1397     return FALSE;
1398 }
1399
1400 /***********************************************************************
1401  *           GetVolumePathNameW   (KERNEL32.@)
1402  */
1403 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1404 {
1405     FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1406     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1407     return FALSE;
1408 }
1409
1410 /***********************************************************************
1411  *           FindFirstVolumeA   (KERNEL32.@)
1412  */
1413 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1414 {
1415     FIXME("(%p, %d), stub!\n", volume, len);
1416     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1417     return INVALID_HANDLE_VALUE;
1418 }
1419
1420 /***********************************************************************
1421  *           FindFirstVolumeW   (KERNEL32.@)
1422  */
1423 HANDLE WINAPI FindFirstVolumeW(LPWSTR volume, DWORD len)
1424 {
1425     FIXME("(%p, %d), stub!\n", volume, len);
1426     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1427     return INVALID_HANDLE_VALUE;
1428 }
1429
1430 /***********************************************************************
1431  *           FindFirstVolumeMountPointA   (KERNEL32.@)
1432  */
1433 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1434 {
1435     FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1436     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1437     return INVALID_HANDLE_VALUE;
1438 }
1439
1440 /***********************************************************************
1441  *           FindFirstVolumeMountPointW   (KERNEL32.@)
1442  */
1443 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1444 {
1445     FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1446     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1447     return INVALID_HANDLE_VALUE;
1448 }
1449
1450 /***********************************************************************
1451  *           FindVolumeClose   (KERNEL32.@)
1452  */
1453 BOOL WINAPI FindVolumeClose(HANDLE handle)
1454 {
1455     FIXME("(%p), stub!\n", handle);
1456     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1457     return FALSE;
1458 }
1459
1460 /***********************************************************************
1461  *           FindVolumeMountPointClose   (KERNEL32.@)
1462  */
1463 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1464 {
1465     FIXME("(%p), stub!\n", h);
1466     return FALSE;
1467 }