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 #define WINE_MOUNTMGR_EXTENSIONS
  41 #include "ddk/mountmgr.h"
  42 #include "kernel_private.h"
  43 #include "wine/library.h"
  44 #include "wine/unicode.h"
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(volume);
  48
  49 #define SUPERBLOCK_SIZE 2048
  50 #define SYMBOLIC_LINK_QUERY 0x0001
  51
  52 #define CDFRAMES_PERSEC         75
  53 #define CDFRAMES_PERMIN         (CDFRAMES_PERSEC * 60)
  54 #define FRAME_OF_ADDR(a)        ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
  55 #define FRAME_OF_TOC(toc, idx)  FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
  56
  57 #define GETWORD(buf,off)  MAKEWORD(buf[(off)],buf[(off+1)])
  58 #define GETLONG(buf,off)  MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
  59
  60 enum fs_type
  61 {
  62     FS_ERROR,    /* error accessing the device */
  63     FS_UNKNOWN,  /* unknown file system */
  64     FS_FAT1216,
  65     FS_FAT32,
  66     FS_ISO9660
  67 };
  68
  69 /* read a Unix symlink; returned buffer must be freed by caller */
  70 static char *read_symlink( const char *path )
  71 {
  72     char *buffer;
  73     int ret, size = 128;
  74
  75     for (;;)
  76     {
  77         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
  78         {
  79             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
  80             return 0;
  81         }
  82         ret = readlink( path, buffer, size );
  83         if (ret == -1)
  84         {
  85             FILE_SetDosError();
  86             HeapFree( GetProcessHeap(), 0, buffer );
  87             return 0;
  88         }
  89         if (ret != size)
  90         {
  91             buffer[ret] = 0;
  92             return buffer;
  93         }
  94         HeapFree( GetProcessHeap(), 0, buffer );
  95         size *= 2;
  96     }
  97 }
  98
  99 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
 100 static char *get_dos_device_path( LPCWSTR name )
 101 {
 102     const char *config_dir = wine_get_config_dir();
 103     char *buffer, *dev;
 104     int i;
 105
 106     if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
 107                               strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
 108     {
 109         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 110         return NULL;
 111     }
 112     strcpy( buffer, config_dir );
 113     strcat( buffer, "/dosdevices/" );
 114     dev = buffer + strlen(buffer);
 115     /* no codepage conversion, DOS device names are ASCII anyway */
 116     for (i = 0; i < 5; i++)
 117         if (!(dev[i] = (char)tolowerW(name[i]))) break;
 118     dev[5] = 0;
 119     return buffer;
 120 }
 121
 122 /* read the contents of an NT symlink object */
 123 static NTSTATUS read_nt_symlink( const WCHAR *name, WCHAR *target, DWORD size )
 124 {
 125     NTSTATUS status;
 126     OBJECT_ATTRIBUTES attr;
 127     UNICODE_STRING nameW;
 128     HANDLE handle;
 129
 130     attr.Length = sizeof(attr);
 131     attr.RootDirectory = 0;
 132     attr.Attributes = OBJ_CASE_INSENSITIVE;
 133     attr.ObjectName = &nameW;
 134     attr.SecurityDescriptor = NULL;
 135     attr.SecurityQualityOfService = NULL;
 136     RtlInitUnicodeString( &nameW, name );
 137
 138     if (!(status = NtOpenSymbolicLinkObject( &handle, SYMBOLIC_LINK_QUERY, &attr )))
 139     {
 140         UNICODE_STRING targetW;
 141         targetW.Buffer = target;
 142         targetW.MaximumLength = (size - 1) * sizeof(WCHAR);
 143         status = NtQuerySymbolicLinkObject( handle, &targetW, NULL );
 144         if (!status) target[targetW.Length / sizeof(WCHAR)] = 0;
 145         NtClose( handle );
 146     }
 147     return status;
 148 }
 149
 150 /* open a handle to a device root */
 151 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
 152 {
 153     static const WCHAR default_rootW[] = {'\\',0};
 154     UNICODE_STRING nt_name;
 155     OBJECT_ATTRIBUTES attr;
 156     IO_STATUS_BLOCK io;
 157     NTSTATUS status;
 158
 159     if (!root) root = default_rootW;
 160     if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
 161     {
 162         SetLastError( ERROR_PATH_NOT_FOUND );
 163         return FALSE;
 164     }
 165     attr.Length = sizeof(attr);
 166     attr.RootDirectory = 0;
 167     attr.Attributes = OBJ_CASE_INSENSITIVE;
 168     attr.ObjectName = &nt_name;
 169     attr.SecurityDescriptor = NULL;
 170     attr.SecurityQualityOfService = NULL;
 171
 172     status = NtOpenFile( handle, 0, &attr, &io, 0,
 173                          FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
 174     RtlFreeUnicodeString( &nt_name );
 175     if (status != STATUS_SUCCESS)
 176     {
 177         SetLastError( RtlNtStatusToDosError(status) );
 178         return FALSE;
 179     }
 180     return TRUE;
 181 }
 182
 183 /* query the type of a drive from the mount manager */
 184 static DWORD get_mountmgr_drive_type( LPCWSTR root )
 185 {
 186     HANDLE mgr;
 187     struct mountmgr_unix_drive data;
 188
 189     memset( &data, 0, sizeof(data) );
 190     if (root) data.letter = root[0];
 191     else
 192     {
 193         WCHAR curdir[MAX_PATH];
 194         GetCurrentDirectoryW( MAX_PATH, curdir );
 195         if (curdir[1] != ':' || curdir[2] != '\\') return DRIVE_UNKNOWN;
 196         data.letter = curdir[0];
 197     }
 198
 199     mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ,
 200                        FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
 201     if (mgr == INVALID_HANDLE_VALUE) return DRIVE_UNKNOWN;
 202
 203     if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, &data, sizeof(data), &data,
 204                           sizeof(data), NULL, NULL ) && GetLastError() != ERROR_MORE_DATA)
 205         data.type = DRIVE_UNKNOWN;
 206
 207     CloseHandle( mgr );
 208     return data.type;
 209 }
 210
 211 /* get the label by reading it from a file at the root of the filesystem */
 212 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
 213 {
 214     HANDLE handle;
 215     WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 216
 217     labelW[0] = device[4];
 218     handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 219                           OPEN_EXISTING, 0, 0 );
 220     if (handle != INVALID_HANDLE_VALUE)
 221     {
 222         char buffer[256], *p;
 223         DWORD size;
 224
 225         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 226         CloseHandle( handle );
 227         p = buffer + size;
 228         while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
 229         *p = 0;
 230         if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
 231             label[len-1] = 0;
 232     }
 233     else label[0] = 0;
 234 }
 235
 236 /* get the serial number by reading it from a file at the root of the filesystem */
 237 static DWORD get_filesystem_serial( const WCHAR *device )
 238 {
 239     HANDLE handle;
 240     WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
 241
 242     serialW[0] = device[4];
 243     handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 244                           OPEN_EXISTING, 0, 0 );
 245     if (handle != INVALID_HANDLE_VALUE)
 246     {
 247         char buffer[32];
 248         DWORD size;
 249
 250         if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
 251         CloseHandle( handle );
 252         buffer[size] = 0;
 253         return strtoul( buffer, NULL, 16 );
 254     }
 255     else return 0;
 256 }
 257
 258
 259 /******************************************************************
 260  *              VOLUME_FindCdRomDataBestVoldesc
 261  */
 262 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
 263 {
 264     BYTE cur_vd_type, max_vd_type = 0;
 265     BYTE buffer[0x800];
 266     DWORD size, offs, best_offs = 0, extra_offs = 0;
 267
 268     for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
 269     {
 270         /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
 271          * the volume label is displaced forward by 8
 272          */
 273         if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
 274         if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
 275         if (size != sizeof(buffer)) break;
 276         /* check for non-ISO9660 signature */
 277         if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
 278         cur_vd_type = buffer[extra_offs];
 279         if (cur_vd_type == 0xff) /* voldesc set terminator */
 280             break;
 281         if (cur_vd_type > max_vd_type)
 282         {
 283             max_vd_type = cur_vd_type;
 284             best_offs = offs + extra_offs;
 285         }
 286     }
 287     return best_offs;
 288 }
 289
 290
 291 /***********************************************************************
 292  *           VOLUME_ReadFATSuperblock
 293  */
 294 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
 295 {
 296     DWORD size;
 297
 298     /* try a fixed disk, with a FAT partition */
 299     if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
 300         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
 301     {
 302         if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN;  /* not a real device */
 303         return FS_ERROR;
 304     }
 305
 306     if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
 307
 308     /* FIXME: do really all FAT have their name beginning with
 309      * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
 310      */
 311     if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
 312     {
 313         /* guess which type of FAT we have */
 314         int reasonable;
 315         unsigned int sectors,
 316                      sect_per_fat,
 317                      total_sectors,
 318                      num_boot_sectors,
 319                      num_fats,
 320                      num_root_dir_ents,
 321                      bytes_per_sector,
 322                      sectors_per_cluster,
 323                      nclust;
 324         sect_per_fat = GETWORD(buff, 0x16);
 325         if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
 326         total_sectors = GETWORD(buff, 0x13);
 327         if (!total_sectors)
 328             total_sectors = GETLONG(buff, 0x20);
 329         num_boot_sectors = GETWORD(buff, 0x0e);
 330         num_fats =  buff[0x10];
 331         num_root_dir_ents = GETWORD(buff, 0x11);
 332         bytes_per_sector = GETWORD(buff, 0x0b);
 333         sectors_per_cluster = buff[0x0d];
 334         /* check if the parameters are reasonable and will not cause
 335          * arithmetic errors in the calculation */
 336         reasonable = num_boot_sectors < total_sectors &&
 337                      num_fats < 16 &&
 338                      bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
 339                      sectors_per_cluster > 1;
 340         if (!reasonable) return FS_UNKNOWN;
 341         sectors =  total_sectors - num_boot_sectors - num_fats * sect_per_fat -
 342             (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
 343         nclust = sectors / sectors_per_cluster;
 344         if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
 345                 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
 346         if (nclust < 65525)
 347         {
 348             if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
 349                     !memcmp(buff+0x36, "FAT", 3))
 350                 return FS_FAT1216;
 351         }
 352     }
 353     return FS_UNKNOWN;
 354 }
 355
 356
 357 /***********************************************************************
 358  *           VOLUME_ReadCDSuperblock
 359  */
 360 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
 361 {
 362     DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
 363
 364     if (!offs) return FS_UNKNOWN;
 365
 366     if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
 367         !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
 368         size != SUPERBLOCK_SIZE)
 369         return FS_ERROR;
 370
 371     /* check for iso9660 present */
 372     if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
 373     return FS_UNKNOWN;
 374 }
 375
 376
 377 /**************************************************************************
 378  *                              VOLUME_GetSuperblockLabel
 379  */
 380 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
 381                                        WCHAR *label, DWORD len )
 382 {
 383     const BYTE *label_ptr = NULL;
 384     DWORD label_len;
 385
 386     switch(type)
 387     {
 388     case FS_ERROR:
 389         label_len = 0;
 390         break;
 391     case FS_UNKNOWN:
 392         get_filesystem_label( device, label, len );
 393         return;
 394     case FS_FAT1216:
 395         label_ptr = superblock + 0x2b;
 396         label_len = 11;
 397         break;
 398     case FS_FAT32:
 399         label_ptr = superblock + 0x47;
 400         label_len = 11;
 401         break;
 402     case FS_ISO9660:
 403         {
 404             BYTE ver = superblock[0x5a];
 405
 406             if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f &&  /* Unicode ID */
 407                 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
 408             { /* yippee, unicode */
 409                 unsigned int i;
 410
 411                 if (len > 17) len = 17;
 412                 for (i = 0; i < len-1; i++)
 413                     label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
 414                 label[i] = 0;
 415                 while (i && label[i-1] == ' ') label[--i] = 0;
 416                 return;
 417             }
 418             label_ptr = superblock + 40;
 419             label_len = 32;
 420             break;
 421         }
 422     }
 423     if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
 424                                            &label_len, (LPCSTR)label_ptr, label_len );
 425     label_len /= sizeof(WCHAR);
 426     label[label_len] = 0;
 427     while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
 428 }
 429
 430
 431 /**************************************************************************
 432  *                              VOLUME_GetSuperblockSerial
 433  */
 434 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
 435 {
 436     switch(type)
 437     {
 438     case FS_ERROR:
 439         break;
 440     case FS_UNKNOWN:
 441         return get_filesystem_serial( device );
 442     case FS_FAT1216:
 443         return GETLONG( superblock, 0x27 );
 444     case FS_FAT32:
 445         return GETLONG( superblock, 0x33 );
 446     case FS_ISO9660:
 447         {
 448             BYTE sum[4];
 449             int i;
 450
 451             sum[0] = sum[1] = sum[2] = sum[3] = 0;
 452             for (i = 0; i < 2048; i += 4)
 453             {
 454                 /* DON'T optimize this into DWORD !! (breaks overflow) */
 455                 sum[0] += superblock[i+0];
 456                 sum[1] += superblock[i+1];
 457                 sum[2] += superblock[i+2];
 458                 sum[3] += superblock[i+3];
 459             }
 460             /*
 461              * OK, another braindead one... argh. Just believe it.
 462              * Me$$ysoft chose to reverse the serial number in NT4/W2K.
 463              * It's true and nobody will ever be able to change it.
 464              */
 465             if (GetVersion() & 0x80000000)
 466                 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
 467             else
 468                 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
 469         }
 470     }
 471     return 0;
 472 }
 473
 474
 475 /**************************************************************************
 476  *                              VOLUME_GetAudioCDSerial
 477  */
 478 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
 479 {
 480     DWORD serial = 0;
 481     int i;
 482
 483     for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
 484         serial += ((toc->TrackData[i].Address[1] << 16) |
 485                    (toc->TrackData[i].Address[2] << 8) |
 486                    toc->TrackData[i].Address[3]);
 487
 488     /*
 489      * dwStart, dwEnd collect the beginning and end of the disc respectively, in
 490      * frames.
 491      * There it is collected for correcting the serial when there are less than
 492      * 3 tracks.
 493      */
 494     if (toc->LastTrack - toc->FirstTrack + 1 < 3)
 495     {
 496         DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
 497         DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
 498         serial += dwEnd - dwStart;
 499     }
 500     return serial;
 501 }
 502
 503
 504 /***********************************************************************
 505  *           GetVolumeInformationW   (KERNEL32.@)
 506  */
 507 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
 508                                    DWORD *serial, DWORD *filename_len, DWORD *flags,
 509                                    LPWSTR fsname, DWORD fsname_len )
 510 {
 511     static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
 512     static const WCHAR fatW[] = {'F','A','T',0};
 513     static const WCHAR fat32W[] = {'F','A','T','3','2',0};
 514     static const WCHAR ntfsW[] = {'N','T','F','S',0};
 515     static const WCHAR cdfsW[] = {'C','D','F','S',0};
 516
 517     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 518     HANDLE handle;
 519     enum fs_type type = FS_UNKNOWN;
 520
 521     if (!root)
 522     {
 523         WCHAR path[MAX_PATH];
 524         GetCurrentDirectoryW( MAX_PATH, path );
 525         device[4] = path[0];
 526     }
 527     else
 528     {
 529         if (!root[0] || root[1] != ':' || root[lstrlenW(root)-1] != '\\' )
 530         {
 531             SetLastError( ERROR_INVALID_NAME );
 532             return FALSE;
 533         }
 534         device[4] = root[0];
 535     }
 536
 537     /* try to open the device */
 538
 539     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 540                           NULL, OPEN_EXISTING, 0, 0 );
 541     if (handle != INVALID_HANDLE_VALUE)
 542     {
 543         BYTE superblock[SUPERBLOCK_SIZE];
 544         CDROM_TOC toc;
 545         DWORD br;
 546
 547         /* check for audio CD */
 548         /* FIXME: we only check the first track for now */
 549         if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
 550         {
 551             if (!(toc.TrackData[0].Control & 0x04))  /* audio track */
 552             {
 553                 TRACE( "%s: found audio CD\n", debugstr_w(device) );
 554                 if (label) lstrcpynW( label, audiocdW, label_len );
 555                 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
 556                 CloseHandle( handle );
 557                 type = FS_ISO9660;
 558                 goto fill_fs_info;
 559             }
 560             type = VOLUME_ReadCDSuperblock( handle, superblock );
 561         }
 562         else
 563         {
 564             type = VOLUME_ReadFATSuperblock( handle, superblock );
 565             if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 566         }
 567         CloseHandle( handle );
 568         TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
 569         if (type == FS_ERROR) return FALSE;
 570
 571         if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
 572         if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
 573         goto fill_fs_info;
 574     }
 575     else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 576
 577     /* we couldn't open the device, fallback to default strategy */
 578
 579     switch(GetDriveTypeW( root ))
 580     {
 581     case DRIVE_UNKNOWN:
 582     case DRIVE_NO_ROOT_DIR:
 583         SetLastError( ERROR_NOT_READY );
 584         return FALSE;
 585     case DRIVE_REMOVABLE:
 586     case DRIVE_FIXED:
 587     case DRIVE_REMOTE:
 588     case DRIVE_RAMDISK:
 589         type = FS_UNKNOWN;
 590         break;
 591     case DRIVE_CDROM:
 592         type = FS_ISO9660;
 593         break;
 594     }
 595
 596     if (label && label_len) get_filesystem_label( device, label, label_len );
 597     if (serial) *serial = get_filesystem_serial( device );
 598
 599 fill_fs_info:  /* now fill in the information that depends on the file system type */
 600
 601     switch(type)
 602     {
 603     case FS_ISO9660:
 604         if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
 605         if (filename_len) *filename_len = 221;
 606         if (flags) *flags = FILE_READ_ONLY_VOLUME;
 607         break;
 608     case FS_FAT1216:
 609         if (fsname) lstrcpynW( fsname, fatW, fsname_len );
 610     case FS_FAT32:
 611         if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
 612         if (filename_len) *filename_len = 255;
 613         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;  /* FIXME */
 614         break;
 615     default:
 616         if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
 617         if (filename_len) *filename_len = 255;
 618         if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
 619         break;
 620     }
 621     return TRUE;
 622 }
 623
 624
 625 /***********************************************************************
 626  *           GetVolumeInformationA   (KERNEL32.@)
 627  */
 628 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
 629                                    DWORD label_len, DWORD *serial,
 630                                    DWORD *filename_len, DWORD *flags,
 631                                    LPSTR fsname, DWORD fsname_len )
 632 {
 633     WCHAR *rootW = NULL;
 634     LPWSTR labelW, fsnameW;
 635     BOOL ret;
 636
 637     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 638
 639     labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
 640     fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
 641
 642     if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
 643                                     filename_len, flags, fsnameW, fsname_len)))
 644     {
 645         if (label) FILE_name_WtoA( labelW, -1, label, label_len );
 646         if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
 647     }
 648
 649     HeapFree( GetProcessHeap(), 0, labelW );
 650     HeapFree( GetProcessHeap(), 0, fsnameW );
 651     return ret;
 652 }
 653
 654
 655
 656 /***********************************************************************
 657  *           SetVolumeLabelW   (KERNEL32.@)
 658  */
 659 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
 660 {
 661     WCHAR device[] = {'\\','\\','.','\\','A',':',0};
 662     HANDLE handle;
 663     enum fs_type type = FS_UNKNOWN;
 664
 665     if (!root)
 666     {
 667         WCHAR path[MAX_PATH];
 668         GetCurrentDirectoryW( MAX_PATH, path );
 669         device[4] = path[0];
 670     }
 671     else
 672     {
 673         if (!root[0] || root[1] != ':')
 674         {
 675             SetLastError( ERROR_INVALID_NAME );
 676             return FALSE;
 677         }
 678         device[4] = root[0];
 679     }
 680
 681     /* try to open the device */
 682
 683     handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
 684                           NULL, OPEN_EXISTING, 0, 0 );
 685     if (handle != INVALID_HANDLE_VALUE)
 686     {
 687         BYTE superblock[SUPERBLOCK_SIZE];
 688
 689         type = VOLUME_ReadFATSuperblock( handle, superblock );
 690         if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
 691         CloseHandle( handle );
 692         if (type != FS_UNKNOWN)
 693         {
 694             /* we can't set the label on FAT or CDROM file systems */
 695             TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
 696             SetLastError( ERROR_ACCESS_DENIED );
 697             return FALSE;
 698         }
 699     }
 700     else
 701     {
 702         TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
 703         if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
 704     }
 705
 706     /* we couldn't open the device, fallback to default strategy */
 707
 708     switch(GetDriveTypeW( root ))
 709     {
 710     case DRIVE_UNKNOWN:
 711     case DRIVE_NO_ROOT_DIR:
 712         SetLastError( ERROR_NOT_READY );
 713         break;
 714     case DRIVE_REMOVABLE:
 715     case DRIVE_FIXED:
 716         {
 717             WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
 718
 719             labelW[0] = device[4];
 720
 721             if (!label[0])  /* delete label file when setting an empty label */
 722                 return DeleteFileW( labelW ) || GetLastError() == ERROR_FILE_NOT_FOUND;
 723
 724             handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 725                                   CREATE_ALWAYS, 0, 0 );
 726             if (handle != INVALID_HANDLE_VALUE)
 727             {
 728                 char buffer[64];
 729                 DWORD size;
 730
 731                 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer)-1, NULL, NULL ))
 732                     buffer[sizeof(buffer)-2] = 0;
 733                 strcat( buffer, "\n" );
 734                 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
 735                 CloseHandle( handle );
 736                 return TRUE;
 737             }
 738             break;
 739         }
 740     case DRIVE_REMOTE:
 741     case DRIVE_RAMDISK:
 742     case DRIVE_CDROM:
 743         SetLastError( ERROR_ACCESS_DENIED );
 744         break;
 745     }
 746     return FALSE;
 747 }
 748
 749 /***********************************************************************
 750  *           SetVolumeLabelA   (KERNEL32.@)
 751  */
 752 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
 753 {
 754     WCHAR *rootW = NULL, *volnameW = NULL;
 755     BOOL ret;
 756
 757     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
 758     if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
 759     ret = SetVolumeLabelW( rootW, volnameW );
 760     HeapFree( GetProcessHeap(), 0, volnameW );
 761     return ret;
 762 }
 763
 764
 765 /***********************************************************************
 766  *           GetVolumeNameForVolumeMountPointA   (KERNEL32.@)
 767  */
 768 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
 769 {
 770     BOOL ret;
 771     WCHAR volumeW[50], *pathW = NULL;
 772     DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
 773
 774     TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
 775
 776     if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
 777         return FALSE;
 778
 779     if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
 780         FILE_name_WtoA( volumeW, -1, volume, len );
 781
 782     HeapFree( GetProcessHeap(), 0, pathW );
 783     return ret;
 784 }
 785
 786 /***********************************************************************
 787  *           GetVolumeNameForVolumeMountPointW   (KERNEL32.@)
 788  */
 789 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
 790 {
 791     static const WCHAR prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
 792     static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',0};
 793     static const WCHAR trailingW[] = {'\\',0};
 794
 795     MOUNTMGR_MOUNT_POINT *input = NULL, *o1;
 796     MOUNTMGR_MOUNT_POINTS *output = NULL;
 797     WCHAR *p;
 798     char *r;
 799     DWORD i, i_size = 1024, o_size = 1024;
 800     WCHAR *nonpersist_name;
 801     WCHAR symlink_name[MAX_PATH];
 802     NTSTATUS status;
 803     HANDLE mgr = INVALID_HANDLE_VALUE;
 804     BOOL ret = FALSE;
 805
 806     TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
 807     if (path[lstrlenW(path)-1] != '\\')
 808     {
 809         SetLastError( ERROR_INVALID_NAME );
 810         return FALSE;
 811     }
 812
 813     if (size < 50)
 814     {
 815         SetLastError( ERROR_FILENAME_EXCED_RANGE );
 816         return FALSE;
 817     }
 818     /* if length of input is > 3 then it must be a mounted folder */
 819     if (lstrlenW(path) > 3)
 820     {
 821         FIXME("Mounted Folders are not yet supported\n");
 822         SetLastError( ERROR_NOT_A_REPARSE_POINT );
 823         return FALSE;
 824     }
 825
 826     mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ,
 827                         NULL, OPEN_EXISTING, 0, 0 );
 828     if (mgr == INVALID_HANDLE_VALUE) return FALSE;
 829
 830     if (!(input = HeapAlloc( GetProcessHeap(), 0, i_size )))
 831     {
 832         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 833         goto err_ret;
 834     }
 835
 836     if (!(output = HeapAlloc( GetProcessHeap(), 0, o_size )))
 837     {
 838         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 839         goto err_ret;
 840     }
 841
 842     /* construct the symlink name as "\DosDevices\C:" */
 843     lstrcpyW( symlink_name, prefixW );
 844     lstrcatW( symlink_name, path );
 845     symlink_name[lstrlenW(symlink_name)-1] = 0;
 846
 847     /* Take the mount point and get the "nonpersistent name" */
 848     /* We will then take that and get the volume name        */
 849     nonpersist_name = (WCHAR *)(input + 1);
 850     status = read_nt_symlink( symlink_name, nonpersist_name, i_size - sizeof(*input) );
 851     TRACE("read_nt_symlink got stat=%x, for %s, got <%s>\n", status,
 852             debugstr_w(symlink_name), debugstr_w(nonpersist_name));
 853     if (status != STATUS_SUCCESS)
 854     {
 855         SetLastError( ERROR_FILE_NOT_FOUND );
 856         goto err_ret;
 857     }
 858
 859     /* Now take the "nonpersistent name" and ask the mountmgr  */
 860     /* to give us all the mount points.  One of them will be   */
 861     /* the volume name  (format of \??\Volume{).               */
 862     memset( input, 0, sizeof(*input) );  /* clear all input parameters */
 863     input->DeviceNameOffset = sizeof(*input);
 864     input->DeviceNameLength = lstrlenW( nonpersist_name) * sizeof(WCHAR);
 865     i_size = input->DeviceNameOffset + input->DeviceNameLength;
 866
 867     output->Size = o_size;
 868
 869     /* now get the true volume name from the mountmgr   */
 870     if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, i_size,
 871                         output, o_size, NULL, NULL ))
 872         goto err_ret;
 873
 874     /* Verify and return the data, note string is not null terminated  */
 875     TRACE("found %d matching mount points\n", output->NumberOfMountPoints);
 876     if (output->NumberOfMountPoints < 1)
 877     {
 878         SetLastError( ERROR_NO_VOLUME_ID );
 879         goto err_ret;
 880     }
 881     o1 = &output->MountPoints[0];
 882
 883     /* look for the volume name in returned values  */
 884     for(i=0;i<output->NumberOfMountPoints;i++)
 885     {
 886         p = (WCHAR*)((char *)output + o1->SymbolicLinkNameOffset);
 887         r = (char *)output + o1->UniqueIdOffset;
 888         TRACE("found symlink=%s, unique=%s, devname=%s\n",
 889             debugstr_wn(p, o1->SymbolicLinkNameLength/sizeof(WCHAR)),
 890             debugstr_an(r, o1->UniqueIdLength),
 891             debugstr_wn((WCHAR*)((char *)output + o1->DeviceNameOffset),
 892                             o1->DeviceNameLength/sizeof(WCHAR)));
 893
 894         if (!strncmpW( p, volumeW, (sizeof(volumeW)-1)/sizeof(WCHAR) ))
 895         {
 896             /* is there space in the return variable ?? */
 897             if ((o1->SymbolicLinkNameLength/sizeof(WCHAR))+2 > size)
 898             {
 899                 SetLastError( ERROR_FILENAME_EXCED_RANGE );
 900                 goto err_ret;
 901             }
 902             memcpy( volume, p, o1->SymbolicLinkNameLength );
 903             volume[o1->SymbolicLinkNameLength / sizeof(WCHAR)] = 0;
 904             lstrcatW( volume, trailingW );
 905             /* change second char from '?' to '\'  */
 906             volume[1] = '\\';
 907             ret = TRUE;
 908             break;
 909         }
 910         o1++;
 911     }
 912
 913 err_ret:
 914     HeapFree( GetProcessHeap(), 0, input );
 915     HeapFree( GetProcessHeap(), 0, output );
 916     CloseHandle( mgr );
 917     return ret;
 918 }
 919
 920 /***********************************************************************
 921  *           DefineDosDeviceW       (KERNEL32.@)
 922  */
 923 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
 924 {
 925     DWORD len, dosdev;
 926     BOOL ret = FALSE;
 927     char *path = NULL, *target, *p;
 928
 929     TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
 930
 931     if (!(flags & DDD_REMOVE_DEFINITION))
 932     {
 933         if (!(flags & DDD_RAW_TARGET_PATH))
 934         {
 935             FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
 936                    flags, debugstr_w(devname), debugstr_w(targetpath) );
 937             SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 938             return FALSE;
 939         }
 940
 941         len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
 942         if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
 943         {
 944             WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
 945             for (p = target; *p; p++) if (*p == '\\') *p = '/';
 946         }
 947         else
 948         {
 949             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 950             return FALSE;
 951         }
 952     }
 953     else target = NULL;
 954
 955     /* first check for a DOS device */
 956
 957     if ((dosdev = RtlIsDosDeviceName_U( devname )))
 958     {
 959         WCHAR name[5];
 960
 961         memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
 962         name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
 963         path = get_dos_device_path( name );
 964     }
 965     else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2])  /* drive mapping */
 966     {
 967         path = get_dos_device_path( devname );
 968     }
 969     else SetLastError( ERROR_FILE_NOT_FOUND );
 970
 971     if (path)
 972     {
 973         if (target)
 974         {
 975             TRACE( "creating symlink %s -> %s\n", path, target );
 976             unlink( path );
 977             if (!symlink( target, path )) ret = TRUE;
 978             else FILE_SetDosError();
 979         }
 980         else
 981         {
 982             TRACE( "removing symlink %s\n", path );
 983             if (!unlink( path )) ret = TRUE;
 984             else FILE_SetDosError();
 985         }
 986         HeapFree( GetProcessHeap(), 0, path );
 987     }
 988     HeapFree( GetProcessHeap(), 0, target );
 989     return ret;
 990 }
 991
 992
 993 /***********************************************************************
 994  *           DefineDosDeviceA       (KERNEL32.@)
 995  */
 996 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
 997 {
 998     WCHAR *devW, *targetW = NULL;
 999     BOOL ret;
1000
1001     if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
1002     if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
1003     ret = DefineDosDeviceW(flags, devW, targetW);
1004     HeapFree( GetProcessHeap(), 0, targetW );
1005     return ret;
1006 }
1007
1008
1009 /***********************************************************************
1010  *           QueryDosDeviceW   (KERNEL32.@)
1011  *
1012  * returns array of strings terminated by \0, terminated by \0
1013  */
1014 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
1015 {
1016     static const WCHAR auxW[] = {'A','U','X',0};
1017     static const WCHAR nulW[] = {'N','U','L',0};
1018     static const WCHAR prnW[] = {'P','R','N',0};
1019     static const WCHAR comW[] = {'C','O','M',0};
1020     static const WCHAR lptW[] = {'L','P','T',0};
1021     static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
1022     static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
1023     static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
1024     static const WCHAR dosdevW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
1025
1026     UNICODE_STRING nt_name;
1027     ANSI_STRING unix_name;
1028     WCHAR nt_buffer[10];
1029     NTSTATUS status;
1030
1031     if (!bufsize)
1032     {
1033         SetLastError( ERROR_INSUFFICIENT_BUFFER );
1034         return 0;
1035     }
1036
1037     if (devname)
1038     {
1039         WCHAR *p, name[5];
1040         char *path, *link;
1041         DWORD dosdev, ret = 0;
1042
1043         if ((dosdev = RtlIsDosDeviceName_U( devname )))
1044         {
1045             memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1046             name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1047         }
1048         else
1049         {
1050             NTSTATUS status;
1051             WCHAR *buffer;
1052
1053             if (!(buffer = HeapAlloc( GetProcessHeap(), 0, sizeof(dosdevW) + strlenW(devname)*sizeof(WCHAR) )))
1054             {
1055                 SetLastError( ERROR_OUTOFMEMORY );
1056                 return 0;
1057             }
1058             memcpy( buffer, dosdevW, sizeof(dosdevW) );
1059             strcatW( buffer, devname );
1060             status = read_nt_symlink( buffer, target, bufsize );
1061             HeapFree( GetProcessHeap(), 0, buffer );
1062             if (status)
1063             {
1064                 SetLastError( RtlNtStatusToDosError(status) );
1065                 return 0;
1066             }
1067             ret = strlenW( target ) + 1;
1068             goto done;
1069         }
1070
1071         /* FIXME: should read NT symlink for all devices */
1072
1073         if (!(path = get_dos_device_path( name ))) return 0;
1074         link = read_symlink( path );
1075         HeapFree( GetProcessHeap(), 0, path );
1076
1077         if (link)
1078         {
1079             ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
1080             HeapFree( GetProcessHeap(), 0, link );
1081         }
1082         else if (dosdev)  /* look for device defaults */
1083         {
1084             if (!strcmpiW( name, auxW ))
1085             {
1086                 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
1087                 {
1088                     memcpy( target, com1W, sizeof(com1W) );
1089                     ret = sizeof(com1W)/sizeof(WCHAR);
1090                 }
1091                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1092                 return ret;
1093             }
1094             if (!strcmpiW( name, prnW ))
1095             {
1096                 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
1097                 {
1098                     memcpy( target, lpt1W, sizeof(lpt1W) );
1099                     ret = sizeof(lpt1W)/sizeof(WCHAR);
1100                 }
1101                 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1102                 return ret;
1103             }
1104
1105             nt_buffer[0] = '\\';
1106             nt_buffer[1] = '?';
1107             nt_buffer[2] = '?';
1108             nt_buffer[3] = '\\';
1109             strcpyW( nt_buffer + 4, name );
1110             RtlInitUnicodeString( &nt_name, nt_buffer );
1111             status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
1112             if (status) SetLastError( RtlNtStatusToDosError(status) );
1113             else
1114             {
1115                 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
1116                 RtlFreeAnsiString( &unix_name );
1117             }
1118         }
1119     done:
1120         if (ret)
1121         {
1122             if (ret < bufsize) target[ret++] = 0;  /* add an extra null */
1123             for (p = target; *p; p++) if (*p == '/') *p = '\\';
1124         }
1125
1126         return ret;
1127     }
1128     else  /* return a list of all devices */
1129     {
1130         OBJECT_ATTRIBUTES attr;
1131         HANDLE handle;
1132         WCHAR *p = target;
1133         int i;
1134
1135         if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1136         {
1137             SetLastError( ERROR_INSUFFICIENT_BUFFER );
1138             return 0;
1139         }
1140
1141         /* FIXME: these should be NT symlinks too */
1142
1143         memcpy( p, auxW, sizeof(auxW) );
1144         p += sizeof(auxW) / sizeof(WCHAR);
1145         memcpy( p, nulW, sizeof(nulW) );
1146         p += sizeof(nulW) / sizeof(WCHAR);
1147         memcpy( p, prnW, sizeof(prnW) );
1148         p += sizeof(prnW) / sizeof(WCHAR);
1149
1150         strcpyW( nt_buffer, com0W );
1151         RtlInitUnicodeString( &nt_name, nt_buffer );
1152
1153         for (i = 1; i <= 9; i++)
1154         {
1155             nt_buffer[7] = '0' + i;
1156             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1157             {
1158                 RtlFreeAnsiString( &unix_name );
1159                 if (p + 5 >= target + bufsize)
1160                 {
1161                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1162                     return 0;
1163                 }
1164                 strcpyW( p, comW );
1165                 p[3] = '0' + i;
1166                 p[4] = 0;
1167                 p += 5;
1168             }
1169         }
1170         strcpyW( nt_buffer + 4, lptW );
1171         for (i = 1; i <= 9; i++)
1172         {
1173             nt_buffer[7] = '0' + i;
1174             if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1175             {
1176                 RtlFreeAnsiString( &unix_name );
1177                 if (p + 5 >= target + bufsize)
1178                 {
1179                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1180                     return 0;
1181                 }
1182                 strcpyW( p, lptW );
1183                 p[3] = '0' + i;
1184                 p[4] = 0;
1185                 p += 5;
1186             }
1187         }
1188
1189         RtlInitUnicodeString( &nt_name, dosdevW );
1190         nt_name.Length -= sizeof(WCHAR);  /* without trailing slash */
1191         attr.Length = sizeof(attr);
1192         attr.RootDirectory = 0;
1193         attr.ObjectName = &nt_name;
1194         attr.Attributes = OBJ_CASE_INSENSITIVE;
1195         attr.SecurityDescriptor = NULL;
1196         attr.SecurityQualityOfService = NULL;
1197         status = NtOpenDirectoryObject( &handle, FILE_LIST_DIRECTORY, &attr );
1198         if (!status)
1199         {
1200             char data[1024];
1201             DIRECTORY_BASIC_INFORMATION *info = (DIRECTORY_BASIC_INFORMATION *)data;
1202             ULONG ctx = 0, len;
1203
1204             while (!NtQueryDirectoryObject( handle, info, sizeof(data), 1, 0, &ctx, &len ))
1205             {
1206                 if (p + info->ObjectName.Length/sizeof(WCHAR) + 1 >= target + bufsize)
1207                 {
1208                     SetLastError( ERROR_INSUFFICIENT_BUFFER );
1209                     NtClose( handle );
1210                     return 0;
1211                 }
1212                 memcpy( p, info->ObjectName.Buffer, info->ObjectName.Length );
1213                 p += info->ObjectName.Length/sizeof(WCHAR);
1214                 *p++ = 0;
1215             }
1216             NtClose( handle );
1217         }
1218
1219         *p++ = 0;  /* terminating null */
1220         return p - target;
1221     }
1222 }
1223
1224
1225 /***********************************************************************
1226  *           QueryDosDeviceA   (KERNEL32.@)
1227  *
1228  * returns array of strings terminated by \0, terminated by \0
1229  */
1230 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1231 {
1232     DWORD ret = 0, retW;
1233     WCHAR *devnameW = NULL;
1234     LPWSTR targetW;
1235
1236     if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1237
1238     targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1239     if (!targetW)
1240     {
1241         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1242         return 0;
1243     }
1244
1245     retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1246
1247     ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1248
1249     HeapFree(GetProcessHeap(), 0, targetW);
1250     return ret;
1251 }
1252
1253
1254 /***********************************************************************
1255  *           GetLogicalDrives   (KERNEL32.@)
1256  */
1257 DWORD WINAPI GetLogicalDrives(void)
1258 {
1259     const char *config_dir = wine_get_config_dir();
1260     struct stat st;
1261     char *buffer, *dev;
1262     DWORD ret = 0;
1263     int i;
1264
1265     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1266     {
1267         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1268         return 0;
1269     }
1270     strcpy( buffer, config_dir );
1271     strcat( buffer, "/dosdevices/a:" );
1272     dev = buffer + strlen(buffer) - 2;
1273
1274     for (i = 0; i < 26; i++)
1275     {
1276         *dev = 'a' + i;
1277         if (!stat( buffer, &st )) ret |= (1 << i);
1278     }
1279     HeapFree( GetProcessHeap(), 0, buffer );
1280     return ret;
1281 }
1282
1283
1284 /***********************************************************************
1285  *           GetLogicalDriveStringsA   (KERNEL32.@)
1286  */
1287 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1288 {
1289     DWORD drives = GetLogicalDrives();
1290     UINT drive, count;
1291
1292     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1293     if ((count * 4) + 1 > len) return count * 4 + 1;
1294
1295     for (drive = 0; drive < 26; drive++)
1296     {
1297         if (drives & (1 << drive))
1298         {
1299             *buffer++ = 'A' + drive;
1300             *buffer++ = ':';
1301             *buffer++ = '\\';
1302             *buffer++ = 0;
1303         }
1304     }
1305     *buffer = 0;
1306     return count * 4;
1307 }
1308
1309
1310 /***********************************************************************
1311  *           GetLogicalDriveStringsW   (KERNEL32.@)
1312  */
1313 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1314 {
1315     DWORD drives = GetLogicalDrives();
1316     UINT drive, count;
1317
1318     for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1319     if ((count * 4) + 1 > len) return count * 4 + 1;
1320
1321     for (drive = 0; drive < 26; drive++)
1322     {
1323         if (drives & (1 << drive))
1324         {
1325             *buffer++ = 'A' + drive;
1326             *buffer++ = ':';
1327             *buffer++ = '\\';
1328             *buffer++ = 0;
1329         }
1330     }
1331     *buffer = 0;
1332     return count * 4;
1333 }
1334
1335
1336 /***********************************************************************
1337  *           GetDriveTypeW   (KERNEL32.@)
1338  *
1339  * Returns the type of the disk drive specified. If root is NULL the
1340  * root of the current directory is used.
1341  *
1342  * RETURNS
1343  *
1344  *  Type of drive (from Win32 SDK):
1345  *
1346  *   DRIVE_UNKNOWN     unable to find out anything about the drive
1347  *   DRIVE_NO_ROOT_DIR nonexistent root dir
1348  *   DRIVE_REMOVABLE   the disk can be removed from the machine
1349  *   DRIVE_FIXED       the disk cannot be removed from the machine
1350  *   DRIVE_REMOTE      network disk
1351  *   DRIVE_CDROM       CDROM drive
1352  *   DRIVE_RAMDISK     virtual disk in RAM
1353  */
1354 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1355 {
1356     FILE_FS_DEVICE_INFORMATION info;
1357     IO_STATUS_BLOCK io;
1358     NTSTATUS status;
1359     HANDLE handle;
1360     UINT ret;
1361
1362     if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1363
1364     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1365     NtClose( handle );
1366     if (status != STATUS_SUCCESS)
1367     {
1368         SetLastError( RtlNtStatusToDosError(status) );
1369         ret = DRIVE_UNKNOWN;
1370     }
1371     else
1372     {
1373         switch (info.DeviceType)
1374         {
1375         case FILE_DEVICE_CD_ROM_FILE_SYSTEM:  ret = DRIVE_CDROM; break;
1376         case FILE_DEVICE_VIRTUAL_DISK:        ret = DRIVE_RAMDISK; break;
1377         case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1378         case FILE_DEVICE_DISK_FILE_SYSTEM:
1379             if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1380             else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1381             else if ((ret = get_mountmgr_drive_type( root )) == DRIVE_UNKNOWN) ret = DRIVE_FIXED;
1382             break;
1383         default:
1384             ret = DRIVE_UNKNOWN;
1385             break;
1386         }
1387     }
1388     TRACE( "%s -> %d\n", debugstr_w(root), ret );
1389     return ret;
1390 }
1391
1392
1393 /***********************************************************************
1394  *           GetDriveTypeA   (KERNEL32.@)
1395  *
1396  * See GetDriveTypeW.
1397  */
1398 UINT WINAPI GetDriveTypeA( LPCSTR root )
1399 {
1400     WCHAR *rootW = NULL;
1401
1402     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1403     return GetDriveTypeW( rootW );
1404 }
1405
1406
1407 /***********************************************************************
1408  *           GetDiskFreeSpaceExW   (KERNEL32.@)
1409  *
1410  *  This function is used to acquire the size of the available and
1411  *  total space on a logical volume.
1412  *
1413  * RETURNS
1414  *
1415  *  Zero on failure, nonzero upon success. Use GetLastError to obtain
1416  *  detailed error information.
1417  *
1418  */
1419 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1420                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1421 {
1422     FILE_FS_SIZE_INFORMATION info;
1423     IO_STATUS_BLOCK io;
1424     NTSTATUS status;
1425     HANDLE handle;
1426     UINT units;
1427
1428     TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1429
1430     if (!open_device_root( root, &handle )) return FALSE;
1431
1432     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1433     NtClose( handle );
1434     if (status != STATUS_SUCCESS)
1435     {
1436         SetLastError( RtlNtStatusToDosError(status) );
1437         return FALSE;
1438     }
1439
1440     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1441     if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1442     if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1443     /* FIXME: this one should take quotas into account */
1444     if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1445     return TRUE;
1446 }
1447
1448
1449 /***********************************************************************
1450  *           GetDiskFreeSpaceExA   (KERNEL32.@)
1451  *
1452  * See GetDiskFreeSpaceExW.
1453  */
1454 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1455                                  PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1456 {
1457     WCHAR *rootW = NULL;
1458
1459     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1460     return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1461 }
1462
1463
1464 /***********************************************************************
1465  *           GetDiskFreeSpaceW   (KERNEL32.@)
1466  */
1467 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1468                                LPDWORD sector_bytes, LPDWORD free_clusters,
1469                                LPDWORD total_clusters )
1470 {
1471     FILE_FS_SIZE_INFORMATION info;
1472     IO_STATUS_BLOCK io;
1473     NTSTATUS status;
1474     HANDLE handle;
1475     UINT units;
1476
1477     TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1478            cluster_sectors, sector_bytes, free_clusters, total_clusters );
1479
1480     if (!open_device_root( root, &handle )) return FALSE;
1481
1482     status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1483     NtClose( handle );
1484     if (status != STATUS_SUCCESS)
1485     {
1486         SetLastError( RtlNtStatusToDosError(status) );
1487         return FALSE;
1488     }
1489
1490     units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1491
1492     if( GetVersion() & 0x80000000) {    /* win3.x, 9x, ME */
1493         /* cap the size and available at 2GB as per specs */
1494         if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1495             info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1496             if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1497                 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1498         }
1499         /* nr. of clusters is always <= 65335 */
1500         while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1501             info.TotalAllocationUnits.QuadPart /= 2;
1502             info.AvailableAllocationUnits.QuadPart /= 2;
1503             info.SectorsPerAllocationUnit *= 2;
1504         }
1505     }
1506
1507     if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1508     if (sector_bytes) *sector_bytes = info.BytesPerSector;
1509     if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1510     if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1511     return TRUE;
1512 }
1513
1514
1515 /***********************************************************************
1516  *           GetDiskFreeSpaceA   (KERNEL32.@)
1517  */
1518 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1519                                LPDWORD sector_bytes, LPDWORD free_clusters,
1520                                LPDWORD total_clusters )
1521 {
1522     WCHAR *rootW = NULL;
1523
1524     if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1525     return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1526 }
1527
1528 /***********************************************************************
1529  *           GetVolumePathNameA   (KERNEL32.@)
1530  */
1531 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1532 {
1533     BOOL ret;
1534     WCHAR *filenameW = NULL, *volumeW;
1535
1536     FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1537
1538     if (filename && !(filenameW = FILE_name_AtoW( filename, FALSE ))) return FALSE;
1539     if (!(volumeW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) ))) return FALSE;
1540
1541     if ((ret = GetVolumePathNameW( filenameW, volumeW, buflen )))
1542         FILE_name_WtoA( volumeW, -1, volumepathname, buflen );
1543
1544     HeapFree( GetProcessHeap(), 0, volumeW );
1545     return ret;
1546 }
1547
1548 /***********************************************************************
1549  *           GetVolumePathNameW   (KERNEL32.@)
1550  */
1551 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1552 {
1553     const WCHAR *p = filename;
1554
1555     FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1556
1557     if (p && tolowerW(p[0]) >= 'a' && tolowerW(p[0]) <= 'z' && p[1] ==':' && p[2] == '\\' && buflen >= 4)
1558     {
1559         volumepathname[0] = p[0];
1560         volumepathname[1] = ':';
1561         volumepathname[2] = '\\';
1562         volumepathname[3] = 0;
1563         return TRUE;
1564     }
1565     return FALSE;
1566 }
1567
1568 /***********************************************************************
1569  *           GetVolumePathNamesForVolumeNameW   (KERNEL32.@)
1570  */
1571 BOOL WINAPI GetVolumePathNamesForVolumeNameW(LPCWSTR volumename, LPWSTR volumepathname, DWORD buflen, PDWORD returnlen)
1572 {
1573     FIXME("(%s, %p, %d, %p), stub!\n", debugstr_w(volumename), volumepathname, buflen, returnlen);
1574     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1575     return FALSE;
1576 }
1577
1578 /***********************************************************************
1579  *           FindFirstVolumeA   (KERNEL32.@)
1580  */
1581 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1582 {
1583     WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1584     HANDLE handle = FindFirstVolumeW( buffer, len );
1585
1586     if (handle != INVALID_HANDLE_VALUE)
1587     {
1588         if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1589         {
1590             FindVolumeClose( handle );
1591             handle = INVALID_HANDLE_VALUE;
1592         }
1593     }
1594     HeapFree( GetProcessHeap(), 0, buffer );
1595     return handle;
1596 }
1597
1598 /***********************************************************************
1599  *           FindFirstVolumeW   (KERNEL32.@)
1600  */
1601 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1602 {
1603     DWORD size = 1024;
1604     HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1605                               NULL, OPEN_EXISTING, 0, 0 );
1606     if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1607
1608     for (;;)
1609     {
1610         MOUNTMGR_MOUNT_POINT input;
1611         MOUNTMGR_MOUNT_POINTS *output;
1612
1613         if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1614         {
1615             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1616             break;
1617         }
1618         memset( &input, 0, sizeof(input) );
1619
1620         if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1621                               output, size, NULL, NULL ))
1622         {
1623             if (GetLastError() != ERROR_MORE_DATA) break;
1624             size = output->Size;
1625             HeapFree( GetProcessHeap(), 0, output );
1626             continue;
1627         }
1628         CloseHandle( mgr );
1629         /* abuse the Size field to store the current index */
1630         output->Size = 0;
1631         if (!FindNextVolumeW( output, volume, len ))
1632         {
1633             HeapFree( GetProcessHeap(), 0, output );
1634             return INVALID_HANDLE_VALUE;
1635         }
1636         return output;
1637     }
1638     CloseHandle( mgr );
1639     return INVALID_HANDLE_VALUE;
1640 }
1641
1642 /***********************************************************************
1643  *           FindNextVolumeA   (KERNEL32.@)
1644  */
1645 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1646 {
1647     WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1648     BOOL ret;
1649
1650     if ((ret = FindNextVolumeW( handle, buffer, len )))
1651     {
1652         if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1653     }
1654     HeapFree( GetProcessHeap(), 0, buffer );
1655     return ret;
1656 }
1657
1658 /***********************************************************************
1659  *           FindNextVolumeW   (KERNEL32.@)
1660  */
1661 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
1662 {
1663     MOUNTMGR_MOUNT_POINTS *data = handle;
1664
1665     while (data->Size < data->NumberOfMountPoints)
1666     {
1667         static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
1668         WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
1669         DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
1670         data->Size++;
1671         /* skip non-volumes */
1672         if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
1673         if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
1674         {
1675             SetLastError( ERROR_FILENAME_EXCED_RANGE );
1676             return FALSE;
1677         }
1678         memcpy( volume, link, size );
1679         volume[1] = '\\';  /* map \??\ to \\?\ */
1680         volume[size / sizeof(WCHAR)] = '\\';  /* Windows appends a backslash */
1681         volume[size / sizeof(WCHAR) + 1] = 0;
1682         TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
1683         return TRUE;
1684     }
1685     SetLastError( ERROR_NO_MORE_FILES );
1686     return FALSE;
1687 }
1688
1689 /***********************************************************************
1690  *           FindVolumeClose   (KERNEL32.@)
1691  */
1692 BOOL WINAPI FindVolumeClose(HANDLE handle)
1693 {
1694     return HeapFree( GetProcessHeap(), 0, handle );
1695 }
1696
1697 /***********************************************************************
1698  *           FindFirstVolumeMountPointA   (KERNEL32.@)
1699  */
1700 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1701 {
1702     FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1703     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1704     return INVALID_HANDLE_VALUE;
1705 }
1706
1707 /***********************************************************************
1708  *           FindFirstVolumeMountPointW   (KERNEL32.@)
1709  */
1710 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1711 {
1712     FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1713     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1714     return INVALID_HANDLE_VALUE;
1715 }
1716
1717 /***********************************************************************
1718  *           FindVolumeMountPointClose   (KERNEL32.@)
1719  */
1720 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1721 {
1722     FIXME("(%p), stub!\n", h);
1723     return FALSE;
1724 }