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 "ddk/mountmgr.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 /* get the label by reading it from a file at the root of the filesystem */
 166 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
 167 {
 168     HANDLE handle;
 169     WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 170
 171     labelW[0] = device[4];
 172     handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 173                           OPEN_EXISTING, 0, 0 );
 174     if (handle != INVALID_HANDLE_VALUE)
 175     {
 176         char buffer[256], *p;
 177         DWORD size;
 178
 179         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 180         CloseHandle( handle );
 181         p = buffer + size;
 182         while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
 183         *p = 0;
 184         if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
 185             label[len-1] = 0;
 186     }
 187     else label[0] = 0;
 188 }
 189
 190 /* get the serial number by reading it from a file at the root of the filesystem */
 191 static DWORD get_filesystem_serial( const WCHAR *device )
 192 {
 193     HANDLE handle;
 194     WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
 195
 196     serialW[0] = device[4];
 197     handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 198                           OPEN_EXISTING, 0, 0 );
 199     if (handle != INVALID_HANDLE_VALUE)
 200     {
 201         char buffer[32];
 202         DWORD size;
 203
 204         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 205         CloseHandle( handle );
 206         buffer[size] = 0;
 207         return strtoul( buffer, NULL, 16 );
 208     }
 209     else return 0;
 210 }
 211
 212 /* fetch the type of a drive from the registry */
 213 static UINT get_registry_drive_type( const WCHAR *root )
 214 {
 215     static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
 216                                              'S','o','f','t','w','a','r','e','\\',
 217                                              'W','i','n','e','\\',
 218                                              'D','r','i','v','e','s',0 };
 219     OBJECT_ATTRIBUTES attr;
 220     UNICODE_STRING nameW;
 221     HANDLE hkey;
 222     DWORD dummy;
 223     UINT ret = DRIVE_UNKNOWN;
 224     char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
 225     WCHAR driveW[] = {'A',':',0};
 226
 227     attr.Length = sizeof(attr);
 228     attr.RootDirectory = 0;
 229     attr.ObjectName = &nameW;
 230     attr.Attributes = 0;
 231     attr.SecurityDescriptor = NULL;
 232     attr.SecurityQualityOfService = NULL;
 233     RtlInitUnicodeString( &nameW, drive_types_keyW );
 234     /* @@ Wine registry key: HKLM\Software\Wine\Drives */
 235     if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
 236
 237     if (root) driveW[0] = root[0];
 238     else
 239     {
 240         WCHAR path[MAX_PATH];
 241         GetCurrentDirectoryW( MAX_PATH, path );
 242         driveW[0] = path[0];
 243     }
 244
 245     RtlInitUnicodeString( &nameW, driveW );
 246     if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 247     {
 248         unsigned int i;
 249         WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 250
 251         for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
 252         {
 253             if (!strcmpiW( data, drive_types[i] ))
 254             {
 255                 ret = i;
 256                 break;
 257             }
 258         }
 259     }
 260     NtClose( hkey );
 261     return ret;
 262 }
 263
 264
 265 /******************************************************************
 266  *              VOLUME_FindCdRomDataBestVoldesc
 267  */
 268 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
 269 {
 270     BYTE cur_vd_type, max_vd_type = 0;
 271     BYTE buffer[0x800];
 272     DWORD size, offs, best_offs = 0, extra_offs = 0;
 273
 274     for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
 275     {
 276         /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
 277          * the volume label is displaced forward by 8
 278          */
 279         if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
 280         if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
 281         if (size != sizeof(buffer)) break;
 282         /* check for non-ISO9660 signature */
 283         if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
 284         cur_vd_type = buffer[extra_offs];
 285         if (cur_vd_type == 0xff) /* voldesc set terminator */
 286             break;
 287         if (cur_vd_type > max_vd_type)
 288         {
 289             max_vd_type = cur_vd_type;
 290             best_offs = offs + extra_offs;
 291         }
 292     }
 293     return best_offs;
 294 }
 295
 296
 297 /***********************************************************************
 298  *           VOLUME_ReadFATSuperblock
 299  */
 300 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
 301 {
 302     DWORD size;
 303
 304     /* try a fixed disk, with a FAT partition */
 305     if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
 306         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
 307     {
 308         if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN;  /* not a real device */
 309         return FS_ERROR;
 310     }
 311
 312     if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
 313
 314     /* FIXME: do really all FAT have their name beginning with
 315      * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
 316      */
 317     if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
 318     {
 319         /* guess which type of FAT we have */
 320         int reasonable;
 321         unsigned int sectors,
 322                      sect_per_fat,
 323                      total_sectors,
 324                      num_boot_sectors,
 325                      num_fats,
 326                      num_root_dir_ents,
 327                      bytes_per_sector,
 328                      sectors_per_cluster,
 329                      nclust;
 330         sect_per_fat = GETWORD(buff, 0x16);
 331         if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
 332         total_sectors = GETWORD(buff, 0x13);
 333         if (!total_sectors)
 334             total_sectors = GETLONG(buff, 0x20);
 335         num_boot_sectors = GETWORD(buff, 0x0e);
 336         num_fats =  buff[0x10];
 337         num_root_dir_ents = GETWORD(buff, 0x11);
 338         bytes_per_sector = GETWORD(buff, 0x0b);
 339         sectors_per_cluster = buff[0x0d];
 340         /* check if the parameters are reasonable and will not cause
 341          * arithmetic errors in the calculation */
 342         reasonable = num_boot_sectors < total_sectors &&
 343                      num_fats < 16 &&
 344                      bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
 345                      sectors_per_cluster > 1;
 346         if (!reasonable) return FS_UNKNOWN;
 347         sectors =  total_sectors - num_boot_sectors - num_fats * sect_per_fat -
 348             (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
 349         nclust = sectors / sectors_per_cluster;
 350         if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
 351                 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
 352         if (nclust < 65525)
 353         {
 354             if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
 355                     !memcmp(buff+0x36, "FAT", 3))
 356                 return FS_FAT1216;
 357         }
 358     }
 359     return FS_UNKNOWN;
 360 }
 361
 362
 363 /***********************************************************************
 364  *           VOLUME_ReadCDSuperblock
 365  */
 366 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
 367 {
 368     DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
 369
 370     if (!offs) return FS_UNKNOWN;
 371
 372     if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
 373         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 374         size != SUPERBLOCK_SIZE)
 375         return FS_ERROR;
 376
 377     /* check for iso9660 present */
 378     if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
 379     return FS_UNKNOWN;
 380 }
 381
 382
 383 /**************************************************************************
 384  *                              VOLUME_GetSuperblockLabel
 385  */
 386 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
 387                                        WCHAR *label, DWORD len )
 388 {
 389     const BYTE *label_ptr = NULL;
 390     DWORD label_len;
 391
 392     switch(type)
 393     {
 394     case FS_ERROR:
 395         label_len = 0;
 396         break;
 397     case FS_UNKNOWN:
 398         get_filesystem_label( device, label, len );
 399         return;
 400     case FS_FAT1216:
 401         label_ptr = superblock + 0x2b;
 402         label_len = 11;
 403         break;
 404     case FS_FAT32:
 405         label_ptr = superblock + 0x47;
 406         label_len = 11;
 407         break;
 408     case FS_ISO9660:
 409         {
 410             BYTE ver = superblock[0x5a];
 411
 412             if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f &&  /* Unicode ID */
 413                 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
 414             { /* yippee, unicode */
 415                 unsigned int i;
 416
 417                 if (len > 17) len = 17;
 418                 for (i = 0; i < len-1; i++)
 419                     label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
 420                 label[i] = 0;
 421                 while (i && label[i-1] == ' ') label[--i] = 0;
 422                 return;
 423             }
 424             label_ptr = superblock + 40;
 425             label_len = 32;
 426             break;
 427         }
 428     }
 429     if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
 430                                            &label_len, (LPCSTR)label_ptr, label_len );
 431     label_len /= sizeof(WCHAR);
 432     label[label_len] = 0;
 433     while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
 434 }
 435
 436
 437 /**************************************************************************
 438  *                              VOLUME_GetSuperblockSerial
 439  */
 440 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
 441 {
 442     switch(type)
 443     {
 444     case FS_ERROR:
 445         break;
 446     case FS_UNKNOWN:
 447         return get_filesystem_serial( device );
 448     case FS_FAT1216:
 449         return GETLONG( superblock, 0x27 );
 450     case FS_FAT32:
 451         return GETLONG( superblock, 0x33 );
 452     case FS_ISO9660:
 453         {
 454             BYTE sum[4];
 455             int i;
 456
 457             sum[0] = sum[1] = sum[2] = sum[3] = 0;
 458             for (i = 0; i < 2048; i += 4)
 459             {
 460                 /* DON'T optimize this into DWORD !! (breaks overflow) */
 461                 sum[0] += superblock[i+0];
 462                 sum[1] += superblock[i+1];
 463                 sum[2] += superblock[i+2];
 464                 sum[3] += superblock[i+3];
 465             }
 466             /*
 467              * OK, another braindead one... argh. Just believe it.
 468              * Me$$ysoft chose to reverse the serial number in NT4/W2K.
 469              * It's true and nobody will ever be able to change it.
 470              */
 471             if (GetVersion() & 0x80000000)
 472                 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
 473             else
 474                 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
 475         }
 476     }
 477     return 0;
 478 }
 479
 480
 481 /**************************************************************************
 482  *                              VOLUME_GetAudioCDSerial
 483  */
 484 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
 485 {
 486     DWORD serial = 0;
 487     int i;
 488
 489     for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
 490         serial += ((toc->TrackData[i].Address[1] << 16) |
 491                    (toc->TrackData[i].Address[2] << 8) |
 492                    toc->TrackData[i].Address[3]);
 493
 494     /*
 495      * dwStart, dwEnd collect the beginning and end of the disc respectively, in
 496      * frames.
 497      * There it is collected for correcting the serial when there are less than
 498      * 3 tracks.
 499      */
 500     if (toc->LastTrack - toc->FirstTrack + 1 < 3)
 501     {
 502         DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
 503         DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
 504         serial += dwEnd - dwStart;
 505     }
 506     return serial;
 507 }
 508
 509
 510 /***********************************************************************
 511  *           GetVolumeInformationW   (KERNEL32.@)
 512  */
 513 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
 514                                    DWORD *serial, DWORD *filename_len, DWORD *flags,
 515                                    LPWSTR fsname, DWORD fsname_len )
 516 {
 517     static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
 518     static const WCHAR fatW[] = {'F','A','T',0};
 519     static const WCHAR fat32W[] = {'F','A','T','3','2',0};
 520     static const WCHAR ntfsW[] = {'N','T','F','S',0};
 521     static const WCHAR cdfsW[] = {'C','D','F','S',0};
 522
 523     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 524     HANDLE handle;
 525     enum fs_type type = FS_UNKNOWN;
 526
 527     if (!root)
 528     {
 529         WCHAR path[MAX_PATH];
 530         GetCurrentDirectoryW( MAX_PATH, path );
 531         device[4] = path[0];
 532     }
 533     else
 534     {
 535         if (!root[0] || root[1] != ':')
 536         {
 537             SetLastError( ERROR_INVALID_NAME );
 538             return FALSE;
 539         }
 540         device[4] = root[0];
 541     }
 542
 543     /* try to open the device */
 544
 545     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 546                           NULL, OPEN_EXISTING, 0, 0 );
 547     if (handle != INVALID_HANDLE_VALUE)
 548     {
 549         BYTE superblock[SUPERBLOCK_SIZE];
 550         CDROM_TOC toc;
 551         DWORD br;
 552
 553         /* check for audio CD */
 554         /* FIXME: we only check the first track for now */
 555         if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
 556         {
 557             if (!(toc.TrackData[0].Control & 0x04))  /* audio track */
 558             {
 559                 TRACE( "%s: found audio CD\n", debugstr_w(device) );
 560                 if (label) lstrcpynW( label, audiocdW, label_len );
 561                 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
 562                 CloseHandle( handle );
 563                 type = FS_ISO9660;
 564                 goto fill_fs_info;
 565             }
 566             type = VOLUME_ReadCDSuperblock( handle, superblock );
 567         }
 568         else
 569         {
 570             type = VOLUME_ReadFATSuperblock( handle, superblock );
 571             if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 572         }
 573         CloseHandle( handle );
 574         TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
 575         if (type == FS_ERROR) return FALSE;
 576
 577         if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
 578         if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
 579         goto fill_fs_info;
 580     }
 581     else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 582
 583     /* we couldn't open the device, fallback to default strategy */
 584
 585     switch(GetDriveTypeW( root ))
 586     {
 587     case DRIVE_UNKNOWN:
 588     case DRIVE_NO_ROOT_DIR:
 589         SetLastError( ERROR_NOT_READY );
 590         return FALSE;
 591     case DRIVE_REMOVABLE:
 592     case DRIVE_FIXED:
 593     case DRIVE_REMOTE:
 594     case DRIVE_RAMDISK:
 595         type = FS_UNKNOWN;
 596         break;
 597     case DRIVE_CDROM:
 598         type = FS_ISO9660;
 599         break;
 600     }
 601
 602     if (label && label_len) get_filesystem_label( device, label, label_len );
 603     if (serial) *serial = get_filesystem_serial( device );
 604
 605 fill_fs_info:  /* now fill in the information that depends on the file system type */
 606
 607     switch(type)
 608     {
 609     case FS_ISO9660:
 610         if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
 611         if (filename_len) *filename_len = 221;
 612         if (flags) *flags = FILE_READ_ONLY_VOLUME;
 613         break;
 614     case FS_FAT1216:
 615         if (fsname) lstrcpynW( fsname, fatW, fsname_len );
 616     case FS_FAT32:
 617         if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
 618         if (filename_len) *filename_len = 255;
 619         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;  /* FIXME */
 620         break;
 621     default:
 622         if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
 623         if (filename_len) *filename_len = 255;
 624         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
 625         break;
 626     }
 627     return TRUE;
 628 }
 629
 630
 631 /***********************************************************************
 632  *           GetVolumeInformationA   (KERNEL32.@)
 633  */
 634 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
 635                                    DWORD label_len, DWORD *serial,
 636                                    DWORD *filename_len, DWORD *flags,
 637                                    LPSTR fsname, DWORD fsname_len )
 638 {
 639     WCHAR *rootW = NULL;
 640     LPWSTR labelW, fsnameW;
 641     BOOL ret;
 642
 643     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 644
 645     labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
 646     fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
 647
 648     if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
 649                                     filename_len, flags, fsnameW, fsname_len)))
 650     {
 651         if (label) FILE_name_WtoA( labelW, -1, label, label_len );
 652         if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
 653     }
 654
 655     HeapFree( GetProcessHeap(), 0, labelW );
 656     HeapFree( GetProcessHeap(), 0, fsnameW );
 657     return ret;
 658 }
 659
 660
 661
 662 /***********************************************************************
 663  *           SetVolumeLabelW   (KERNEL32.@)
 664  */
 665 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
 666 {
 667     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 668     HANDLE handle;
 669     enum fs_type type = FS_UNKNOWN;
 670
 671     if (!root)
 672     {
 673         WCHAR path[MAX_PATH];
 674         GetCurrentDirectoryW( MAX_PATH, path );
 675         device[4] = path[0];
 676     }
 677     else
 678     {
 679         if (!root[0] || root[1] != ':')
 680         {
 681             SetLastError( ERROR_INVALID_NAME );
 682             return FALSE;
 683         }
 684         device[4] = root[0];
 685     }
 686
 687     /* try to open the device */
 688
 689     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 690                           NULL, OPEN_EXISTING, 0, 0 );
 691     if (handle != INVALID_HANDLE_VALUE)
 692     {
 693         BYTE superblock[SUPERBLOCK_SIZE];
 694
 695         type = VOLUME_ReadFATSuperblock( handle, superblock );
 696         if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 697         CloseHandle( handle );
 698         if (type != FS_UNKNOWN)
 699         {
 700             /* we can't set the label on FAT or CDROM file systems */
 701             TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
 702             SetLastError( ERROR_ACCESS_DENIED );
 703             return FALSE;
 704         }
 705     }
 706     else
 707     {
 708         TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 709         if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
 710     }
 711
 712     /* we couldn't open the device, fallback to default strategy */
 713
 714     switch(GetDriveTypeW( root ))
 715     {
 716     case DRIVE_UNKNOWN:
 717     case DRIVE_NO_ROOT_DIR:
 718         SetLastError( ERROR_NOT_READY );
 719         break;
 720     case DRIVE_REMOVABLE:
 721     case DRIVE_FIXED:
 722         {
 723             WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 724
 725             labelW[0] = device[4];
 726             handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 727                                   CREATE_ALWAYS, 0, 0 );
 728             if (handle != INVALID_HANDLE_VALUE)
 729             {
 730                 char buffer[64];
 731                 DWORD size;
 732
 733                 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
 734                     buffer[sizeof(buffer)-1] = 0;
 735                 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
 736                 CloseHandle( handle );
 737                 return TRUE;
 738             }
 739             break;
 740         }
 741     case DRIVE_REMOTE:
 742     case DRIVE_RAMDISK:
 743     case DRIVE_CDROM:
 744         SetLastError( ERROR_ACCESS_DENIED );
 745         break;
 746     }
 747     return FALSE;
 748 }
 749
 750 /***********************************************************************
 751  *           SetVolumeLabelA   (KERNEL32.@)
 752  */
 753 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
 754 {
 755     WCHAR *rootW = NULL, *volnameW = NULL;
 756     BOOL ret;
 757
 758     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 759     if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
 760     ret = SetVolumeLabelW( rootW, volnameW );
 761     HeapFree( GetProcessHeap(), 0, volnameW );
 762     return ret;
 763 }
 764
 765
 766 /***********************************************************************
 767  *           GetVolumeNameForVolumeMountPointA   (KERNEL32.@)
 768  */
 769 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
 770 {
 771     BOOL ret;
 772     WCHAR volumeW[50], *pathW = NULL;
 773     DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
 774
 775     TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
 776
 777     if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
 778         return FALSE;
 779
 780     if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
 781         FILE_name_WtoA( volumeW, -1, volume, len );
 782
 783     HeapFree( GetProcessHeap(), 0, pathW );
 784     return ret;
 785 }
 786
 787 /***********************************************************************
 788  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 789  */
 790 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
 791 {
 792     BOOL ret = FALSE;
 793     static const WCHAR fmt[] =
 794         { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
 795
 796     TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
 797
 798     if (!path || !path[0]) return FALSE;
 799
 800     if (size >= sizeof(fmt) / sizeof(WCHAR))
 801     {
 802         /* FIXME: will break when we support volume mounts */
 803         sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
 804         ret = TRUE;
 805     }
 806     return ret;
 807 }
 808
 809 /***********************************************************************
 810  *           DefineDosDeviceW       (KERNEL32.@)
 811  */
 812 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 813 {
 814     DWORD len, dosdev;
 815     BOOL ret = FALSE;
 816     char *path = NULL, *target, *p;
 817
 818     TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 819
 820     if (!(flags & DDD_REMOVE_DEFINITION))
 821     {
 822         if (!(flags & DDD_RAW_TARGET_PATH))
 823         {
 824             FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 825                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 826             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 827             return FALSE;
 828         }
 829
 830         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 831         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 832         {
 833             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 834             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 835         }
 836         else
 837         {
 838             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 839             return FALSE;
 840         }
 841     }
 842     else target = NULL;
 843
 844     /* first check for a DOS device */
 845
 846     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 847     {
 848         WCHAR name[5];
 849
 850         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 851         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 852         path = get_dos_device_path( name );
 853     }
 854     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 855     {
 856         path = get_dos_device_path( devname );
 857     }
 858     else SetLastError( ERROR_FILE_NOT_FOUND );
 859
 860     if (path)
 861     {
 862         if (target)
 863         {
 864             TRACE( "creating symlink %s -> %s\n", path, target );
 865             unlink( path );
 866             if (!symlink( target, path )) ret = TRUE;
 867             else FILE_SetDosError();
 868         }
 869         else
 870         {
 871             TRACE( "removing symlink %s\n", path );
 872             if (!unlink( path )) ret = TRUE;
 873             else FILE_SetDosError();
 874         }
 875         HeapFree( GetProcessHeap(), 0, path );
 876     }
 877     HeapFree( GetProcessHeap(), 0, target );
 878     return ret;
 879 }
 880
 881
 882 /***********************************************************************
 883  *           DefineDosDeviceA       (KERNEL32.@)
 884  */
 885 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 886 {
 887     WCHAR *devW, *targetW = NULL;
 888     BOOL ret;
 889
 890     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
 891     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
 892     ret = DefineDosDeviceW(flags, devW, targetW);
 893     HeapFree( GetProcessHeap(), 0, targetW );
 894     return ret;
 895 }
 896
 897
 898 /***********************************************************************
 899  *           QueryDosDeviceW   (KERNEL32.@)
 900  *
 901  * returns array of strings terminated by \0, terminated by \0
 902  */
 903 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
 904 {
 905     static const WCHAR auxW[] = {'A','U','X',0};
 906     static const WCHAR nulW[] = {'N','U','L',0};
 907     static const WCHAR prnW[] = {'P','R','N',0};
 908     static const WCHAR comW[] = {'C','O','M',0};
 909     static const WCHAR lptW[] = {'L','P','T',0};
 910     static const WCHAR rootW[] = {'A',':','\\',0};
 911     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
 912     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
 913     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
 914
 915     UNICODE_STRING nt_name;
 916     ANSI_STRING unix_name;
 917     WCHAR nt_buffer[10];
 918     NTSTATUS status;
 919
 920     if (!bufsize)
 921     {
 922         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 923         return 0;
 924     }
 925
 926     if (devname)
 927     {
 928         WCHAR *p, name[5];
 929         char *path, *link;
 930         DWORD dosdev, ret = 0;
 931
 932         if ((dosdev = RtlIsDosDeviceName_U( devname )))
 933         {
 934             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 935             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 936         }
 937         else if (devname[0] && devname[1] == ':' && !devname[2])
 938         {
 939             memcpy( name, devname, 3 * sizeof(WCHAR) );
 940         }
 941         else
 942         {
 943             SetLastError( ERROR_BAD_PATHNAME );
 944             return 0;
 945         }
 946
 947         if (!(path = get_dos_device_path( name ))) return 0;
 948         link = read_symlink( path );
 949         HeapFree( GetProcessHeap(), 0, path );
 950
 951         if (link)
 952         {
 953             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
 954             HeapFree( GetProcessHeap(), 0, link );
 955         }
 956         else if (dosdev)  /* look for device defaults */
 957         {
 958             if (!strcmpiW( name, auxW ))
 959             {
 960                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
 961                 {
 962                     memcpy( target, com1W, sizeof(com1W) );
 963                     ret = sizeof(com1W)/sizeof(WCHAR);
 964                 }
 965                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 966                 return ret;
 967             }
 968             if (!strcmpiW( name, prnW ))
 969             {
 970                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
 971                 {
 972                     memcpy( target, lpt1W, sizeof(lpt1W) );
 973                     ret = sizeof(lpt1W)/sizeof(WCHAR);
 974                 }
 975                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
 976                 return ret;
 977             }
 978
 979             nt_buffer[0] = '\\';
 980             nt_buffer[1] = '?';
 981             nt_buffer[2] = '?';
 982             nt_buffer[3] = '\\';
 983             strcpyW( nt_buffer + 4, name );
 984             RtlInitUnicodeString( &nt_name, nt_buffer );
 985             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
 986             if (status) SetLastError( RtlNtStatusToDosError(status) );
 987             else
 988             {
 989                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
 990                 RtlFreeAnsiString( &unix_name );
 991             }
 992         }
 993
 994         if (ret)
 995         {
 996             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
 997             for (p = target; *p; p++) if (*p == '/') *p = '\\';
 998         }
 999
1000         return ret;
1001     }
1002     else  /* return a list of all devices */
1003     {
1004         WCHAR *p = target;
1005         int i;
1006
1007         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1008         {
1009             SetLastError( ERROR_INSUFFICIENT_BUFFER );
1010             return 0;
1011         }
1012
1013         memcpy( p, auxW, sizeof(auxW) );
1014         p += sizeof(auxW) / sizeof(WCHAR);
1015         memcpy( p, nulW, sizeof(nulW) );
1016         p += sizeof(nulW) / sizeof(WCHAR);
1017         memcpy( p, prnW, sizeof(prnW) );
1018         p += sizeof(prnW) / sizeof(WCHAR);
1019
1020         strcpyW( nt_buffer, com0W );
1021         RtlInitUnicodeString( &nt_name, nt_buffer );
1022
1023         for (i = 1; i <= 9; i++)
1024         {
1025             nt_buffer[7] = '0' + i;
1026             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1027             {
1028                 RtlFreeAnsiString( &unix_name );
1029                 if (p + 5 >= target + bufsize)
1030                 {
1031                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1032                     return 0;
1033                 }
1034                 strcpyW( p, comW );
1035                 p[3] = '0' + i;
1036                 p[4] = 0;
1037                 p += 5;
1038             }
1039         }
1040         strcpyW( nt_buffer + 4, lptW );
1041         for (i = 1; i <= 9; i++)
1042         {
1043             nt_buffer[7] = '0' + i;
1044             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1045             {
1046                 RtlFreeAnsiString( &unix_name );
1047                 if (p + 5 >= target + bufsize)
1048                 {
1049                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1050                     return 0;
1051                 }
1052                 strcpyW( p, lptW );
1053                 p[3] = '0' + i;
1054                 p[4] = 0;
1055                 p += 5;
1056             }
1057         }
1058
1059         strcpyW( nt_buffer + 4, rootW );
1060         RtlInitUnicodeString( &nt_name, nt_buffer );
1061
1062         for (i = 0; i < 26; i++)
1063         {
1064             nt_buffer[4] = 'a' + i;
1065             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1066             {
1067                 RtlFreeAnsiString( &unix_name );
1068                 if (p + 3 >= target + bufsize)
1069                 {
1070                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1071                     return 0;
1072                 }
1073                 *p++ = 'A' + i;
1074                 *p++ = ':';
1075                 *p++ = 0;
1076             }
1077         }
1078         *p++ = 0;  /* terminating null */
1079         return p - target;
1080     }
1081 }
1082
1083
1084 /***********************************************************************
1085  *           QueryDosDeviceA   (KERNEL32.@)
1086  *
1087  * returns array of strings terminated by \0, terminated by \0
1088  */
1089 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1090 {
1091     DWORD ret = 0, retW;
1092     WCHAR *devnameW = NULL;
1093     LPWSTR targetW;
1094
1095     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1096
1097     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1098     if (!targetW)
1099     {
1100         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1101         return 0;
1102     }
1103
1104     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1105
1106     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1107
1108     HeapFree(GetProcessHeap(), 0, targetW);
1109     return ret;
1110 }
1111
1112
1113 /***********************************************************************
1114  *           GetLogicalDrives   (KERNEL32.@)
1115  */
1116 DWORD WINAPI GetLogicalDrives(void)
1117 {
1118     const char *config_dir = wine_get_config_dir();
1119     struct stat st;
1120     char *buffer, *dev;
1121     DWORD ret = 0;
1122     int i;
1123
1124     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1125     {
1126         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1127         return 0;
1128     }
1129     strcpy( buffer, config_dir );
1130     strcat( buffer, "/dosdevices/a:" );
1131     dev = buffer + strlen(buffer) - 2;
1132
1133     for (i = 0; i < 26; i++)
1134     {
1135         *dev = 'a' + i;
1136         if (!stat( buffer, &st )) ret |= (1 << i);
1137     }
1138     HeapFree( GetProcessHeap(), 0, buffer );
1139     return ret;
1140 }
1141
1142
1143 /***********************************************************************
1144  *           GetLogicalDriveStringsA   (KERNEL32.@)
1145  */
1146 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1147 {
1148     DWORD drives = GetLogicalDrives();
1149     UINT drive, count;
1150
1151     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1152     if ((count * 4) + 1 > len) return count * 4 + 1;
1153
1154     for (drive = 0; drive < 26; drive++)
1155     {
1156         if (drives & (1 << drive))
1157         {
1158             *buffer++ = 'a' + drive;
1159             *buffer++ = ':';
1160             *buffer++ = '\\';
1161             *buffer++ = 0;
1162         }
1163     }
1164     *buffer = 0;
1165     return count * 4;
1166 }
1167
1168
1169 /***********************************************************************
1170  *           GetLogicalDriveStringsW   (KERNEL32.@)
1171  */
1172 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1173 {
1174     DWORD drives = GetLogicalDrives();
1175     UINT drive, count;
1176
1177     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1178     if ((count * 4) + 1 > len) return count * 4 + 1;
1179
1180     for (drive = 0; drive < 26; drive++)
1181     {
1182         if (drives & (1 << drive))
1183         {
1184             *buffer++ = 'a' + drive;
1185             *buffer++ = ':';
1186             *buffer++ = '\\';
1187             *buffer++ = 0;
1188         }
1189     }
1190     *buffer = 0;
1191     return count * 4;
1192 }
1193
1194
1195 /***********************************************************************
1196  *           GetDriveTypeW   (KERNEL32.@)
1197  *
1198  * Returns the type of the disk drive specified. If root is NULL the
1199  * root of the current directory is used.
1200  *
1201  * RETURNS
1202  *
1203  *  Type of drive (from Win32 SDK):
1204  *
1205  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1206  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1207  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1208  *   DRIVE_FIXED       the disk cannot be removed from the machine
1209  *   DRIVE_REMOTE      network disk
1210  *   DRIVE_CDROM       CDROM drive
1211  *   DRIVE_RAMDISK     virtual disk in RAM
1212  */
1213 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1214 {
1215     FILE_FS_DEVICE_INFORMATION info;
1216     IO_STATUS_BLOCK io;
1217     NTSTATUS status;
1218     HANDLE handle;
1219     UINT ret;
1220
1221     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1222
1223     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1224     NtClose( handle );
1225     if (status != STATUS_SUCCESS)
1226     {
1227         SetLastError( RtlNtStatusToDosError(status) );
1228         ret = DRIVE_UNKNOWN;
1229     }
1230     else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1231     {
1232         switch (info.DeviceType)
1233         {
1234         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1235         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1236         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1237         case FILE_DEVICE_DISK_FILE_SYSTEM:
1238             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1239             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1240             else ret = DRIVE_FIXED;
1241             break;
1242         default:
1243             ret = DRIVE_UNKNOWN;
1244             break;
1245         }
1246     }
1247     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1248     return ret;
1249 }
1250
1251
1252 /***********************************************************************
1253  *           GetDriveTypeA   (KERNEL32.@)
1254  *
1255  * See GetDriveTypeW.
1256  */
1257 UINT WINAPI GetDriveTypeA( LPCSTR root )
1258 {
1259     WCHAR *rootW = NULL;
1260
1261     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1262     return GetDriveTypeW( rootW );
1263 }
1264
1265
1266 /***********************************************************************
1267  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1268  *
1269  *  This function is used to acquire the size of the available and
1270  *  total space on a logical volume.
1271  *
1272  * RETURNS
1273  *
1274  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1275  *  detailed error information.
1276  *
1277  */
1278 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1279                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1280 {
1281     FILE_FS_SIZE_INFORMATION info;
1282     IO_STATUS_BLOCK io;
1283     NTSTATUS status;
1284     HANDLE handle;
1285     UINT units;
1286
1287     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1288
1289     if (!open_device_root( root, &handle )) return FALSE;
1290
1291     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1292     NtClose( handle );
1293     if (status != STATUS_SUCCESS)
1294     {
1295         SetLastError( RtlNtStatusToDosError(status) );
1296         return FALSE;
1297     }
1298
1299     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1300     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1301     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1302     /* FIXME: this one should take quotas into account */
1303     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1304     return TRUE;
1305 }
1306
1307
1308 /***********************************************************************
1309  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1310  *
1311  * See GetDiskFreeSpaceExW.
1312  */
1313 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1314                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1315 {
1316     WCHAR *rootW = NULL;
1317
1318     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1319     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1320 }
1321
1322
1323 /***********************************************************************
1324  *           GetDiskFreeSpaceW   (KERNEL32.@)
1325  */
1326 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1327                                LPDWORD sector_bytes, LPDWORD free_clusters,
1328                                LPDWORD total_clusters )
1329 {
1330     FILE_FS_SIZE_INFORMATION info;
1331     IO_STATUS_BLOCK io;
1332     NTSTATUS status;
1333     HANDLE handle;
1334     UINT units;
1335
1336     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1337            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1338
1339     if (!open_device_root( root, &handle )) return FALSE;
1340
1341     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1342     NtClose( handle );
1343     if (status != STATUS_SUCCESS)
1344     {
1345         SetLastError( RtlNtStatusToDosError(status) );
1346         return FALSE;
1347     }
1348
1349     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1350
1351     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1352         /* cap the size and available at 2GB as per specs */
1353         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1354             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1355             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1356                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1357         }
1358         /* nr. of clusters is always <= 65335 */
1359         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1360             info.TotalAllocationUnits.QuadPart /= 2;
1361             info.AvailableAllocationUnits.QuadPart /= 2;
1362             info.SectorsPerAllocationUnit *= 2;
1363         }
1364     }
1365
1366     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1367     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1368     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1369     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1370     return TRUE;
1371 }
1372
1373
1374 /***********************************************************************
1375  *           GetDiskFreeSpaceA   (KERNEL32.@)
1376  */
1377 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1378                                LPDWORD sector_bytes, LPDWORD free_clusters,
1379                                LPDWORD total_clusters )
1380 {
1381     WCHAR *rootW = NULL;
1382
1383     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1384     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1385 }
1386
1387 /***********************************************************************
1388  *           GetVolumePathNameA   (KERNEL32.@)
1389  */
1390 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1391 {
1392     FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1393     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1394     return FALSE;
1395 }
1396
1397 /***********************************************************************
1398  *           GetVolumePathNameW   (KERNEL32.@)
1399  */
1400 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1401 {
1402     FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1403     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1404     return FALSE;
1405 }
1406
1407 /***********************************************************************
1408  *           FindFirstVolumeA   (KERNEL32.@)
1409  */
1410 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1411 {
1412     WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1413     HANDLE handle = FindFirstVolumeW( buffer, len );
1414
1415     if (handle != INVALID_HANDLE_VALUE)
1416     {
1417         if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1418         {
1419             FindVolumeClose( handle );
1420             handle = INVALID_HANDLE_VALUE;
1421         }
1422     }
1423     HeapFree( GetProcessHeap(), 0, buffer );
1424     return handle;
1425 }
1426
1427 /***********************************************************************
1428  *           FindFirstVolumeW   (KERNEL32.@)
1429  */
1430 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1431 {
1432     DWORD size = 1024;
1433     HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1434                               NULL, OPEN_EXISTING, 0, 0 );
1435     if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1436
1437     for (;;)
1438     {
1439         MOUNTMGR_MOUNT_POINT input;
1440         MOUNTMGR_MOUNT_POINTS *output;
1441
1442         if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1443         {
1444             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1445             break;
1446         }
1447         memset( &input, 0, sizeof(input) );
1448
1449         if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1450                               output, size, NULL, NULL ))
1451         {
1452             if (GetLastError() != ERROR_MORE_DATA) break;
1453             size = output->Size;
1454             HeapFree( GetProcessHeap(), 0, output );
1455             continue;
1456         }
1457         CloseHandle( mgr );
1458         /* abuse the Size field to store the current index */
1459         output->Size = 0;
1460         if (!FindNextVolumeW( output, volume, len ))
1461         {
1462             HeapFree( GetProcessHeap(), 0, output );
1463             return INVALID_HANDLE_VALUE;
1464         }
1465         return (HANDLE)output;
1466     }
1467     CloseHandle( mgr );
1468     return INVALID_HANDLE_VALUE;
1469 }
1470
1471 /***********************************************************************
1472  *           FindNextVolumeA   (KERNEL32.@)
1473  */
1474 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1475 {
1476     WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1477     BOOL ret;
1478
1479     if ((ret = FindNextVolumeW( handle, buffer, len )))
1480     {
1481         if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1482     }
1483     HeapFree( GetProcessHeap(), 0, buffer );
1484     return ret;
1485 }
1486
1487 /***********************************************************************
1488  *           FindNextVolumeW   (KERNEL32.@)
1489  */
1490 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
1491 {
1492     MOUNTMGR_MOUNT_POINTS *data = handle;
1493
1494     while (data->Size < data->NumberOfMountPoints)
1495     {
1496         static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
1497         WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
1498         DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
1499         data->Size++;
1500         /* skip non-volumes */
1501         if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
1502         if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
1503         {
1504             SetLastError( ERROR_FILENAME_EXCED_RANGE );
1505             return FALSE;
1506         }
1507         memcpy( volume, link, size );
1508         volume[1] = '\\';  /* map \??\ to \\?\ */
1509         volume[size / sizeof(WCHAR)] = '\\';  /* Windows appends a backslash */
1510         volume[size / sizeof(WCHAR) + 1] = 0;
1511         TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
1512         return TRUE;
1513     }
1514     SetLastError( ERROR_NO_MORE_FILES );
1515     return FALSE;
1516 }
1517
1518 /***********************************************************************
1519  *           FindVolumeClose   (KERNEL32.@)
1520  */
1521 BOOL WINAPI FindVolumeClose(HANDLE handle)
1522 {
1523     return HeapFree( GetProcessHeap(), 0, handle );
1524 }
1525
1526 /***********************************************************************
1527  *           FindFirstVolumeMountPointA   (KERNEL32.@)
1528  */
1529 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1530 {
1531     FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1532     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1533     return INVALID_HANDLE_VALUE;
1534 }
1535
1536 /***********************************************************************
1537  *           FindFirstVolumeMountPointW   (KERNEL32.@)
1538  */
1539 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1540 {
1541     FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1542     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1543     return INVALID_HANDLE_VALUE;
1544 }
1545
1546 /***********************************************************************
1547  *           FindVolumeMountPointClose   (KERNEL32.@)
1548  */
1549 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1550 {
1551     FIXME("(%p), stub!\n", h);
1552     return FALSE;
1553 }