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Release 20050930.
[wine/gsoc-2012-control.git] / dlls / kernel / volume.c
blob0a6a23e21277de96dd51c8c43f7cc633176db701
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 "windef.h"
33 #include "winbase.h"
34 #include "winnls.h"
35 #include "winternl.h"
36 #include "ntstatus.h"
37 #include "winioctl.h"
38 #include "ntddstor.h"
39 #include "ntddcdrm.h"
40 #include "kernel_private.h"
41 #include "wine/library.h"
42 #include "wine/unicode.h"
43 #include "wine/debug.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(volume);
46
47 #define SUPERBLOCK_SIZE 2048
48
49 #define CDFRAMES_PERSEC 75
50 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
51 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
52 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
53
54 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
55 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
56
57 enum fs_type
58 {
59 FS_ERROR, /* error accessing the device */
60 FS_UNKNOWN, /* unknown file system */
61 FS_FAT1216,
62 FS_FAT32,
63 FS_ISO9660
64 };
65
66 static const WCHAR drive_types[][8] =
67 {
68 { 0 }, /* DRIVE_UNKNOWN */
69 { 0 }, /* DRIVE_NO_ROOT_DIR */
70 {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
71 {'h','d',0}, /* DRIVE_FIXED */
72 {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
73 {'c','d','r','o','m',0}, /* DRIVE_CDROM */
74 {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
75 };
76
77 /* read a Unix symlink; returned buffer must be freed by caller */
78 static char *read_symlink( const char *path )
79 {
80 char *buffer;
81 int ret, size = 128;
82
83 for (;;)
84 {
85 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
86 {
87 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
88 return 0;
89 }
90 ret = readlink( path, buffer, size );
91 if (ret == -1)
92 {
93 FILE_SetDosError();
94 HeapFree( GetProcessHeap(), 0, buffer );
95 return 0;
96 }
97 if (ret != size)
98 {
99 buffer[ret] = 0;
100 return buffer;
101 }
102 HeapFree( GetProcessHeap(), 0, buffer );
103 size *= 2;
104 }
105 }
106
107 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
108 static char *get_dos_device_path( LPCWSTR name )
109 {
110 const char *config_dir = wine_get_config_dir();
111 char *buffer, *dev;
112 int i;
113
114 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
115 strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
116 {
117 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
118 return NULL;
119 }
120 strcpy( buffer, config_dir );
121 strcat( buffer, "/dosdevices/" );
122 dev = buffer + strlen(buffer);
123 /* no codepage conversion, DOS device names are ASCII anyway */
124 for (i = 0; i < 5; i++)
125 if (!(dev[i] = (char)tolowerW(name[i]))) break;
126 dev[5] = 0;
127 return buffer;
128 }
129
130
131 /* open a handle to a device root */
132 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
133 {
134 static const WCHAR default_rootW[] = {'\\',0};
135 UNICODE_STRING nt_name;
136 OBJECT_ATTRIBUTES attr;
137 IO_STATUS_BLOCK io;
138 NTSTATUS status;
139
140 if (!root) root = default_rootW;
141 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
142 {
143 SetLastError( ERROR_PATH_NOT_FOUND );
144 return FALSE;
145 }
146 attr.Length = sizeof(attr);
147 attr.RootDirectory = 0;
148 attr.Attributes = OBJ_CASE_INSENSITIVE;
149 attr.ObjectName = &nt_name;
150 attr.SecurityDescriptor = NULL;
151 attr.SecurityQualityOfService = NULL;
152
153 status = NtOpenFile( handle, 0, &attr, &io, 0,
154 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
155 RtlFreeUnicodeString( &nt_name );
156 if (status != STATUS_SUCCESS)
157 {
158 SetLastError( RtlNtStatusToDosError(status) );
159 return FALSE;
160 }
161 return TRUE;
162 }
163
164
165 /* fetch the type of a drive from the registry */
166 static UINT get_registry_drive_type( const WCHAR *root )
167 {
168 static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
169 'S','o','f','t','w','a','r','e','\\',
170 'W','i','n','e','\\',
171 'D','r','i','v','e','s',0 };
172 OBJECT_ATTRIBUTES attr;
173 UNICODE_STRING nameW;
174 HANDLE hkey;
175 DWORD dummy;
176 UINT ret = DRIVE_UNKNOWN;
177 char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
178 WCHAR driveW[] = {'A',':',0};
179
180 attr.Length = sizeof(attr);
181 attr.RootDirectory = 0;
182 attr.ObjectName = &nameW;
183 attr.Attributes = 0;
184 attr.SecurityDescriptor = NULL;
185 attr.SecurityQualityOfService = NULL;
186 RtlInitUnicodeString( &nameW, drive_types_keyW );
187 /* @@ Wine registry key: HKLM\Software\Wine\Drives */
188 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
189
190 if (root) driveW[0] = root[0];
191 else
192 {
193 WCHAR path[MAX_PATH];
194 GetCurrentDirectoryW( MAX_PATH, path );
195 driveW[0] = path[0];
196 }
197
198 RtlInitUnicodeString( &nameW, driveW );
199 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
200 {
201 unsigned int i;
202 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
203
204 for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
205 {
206 if (!strcmpiW( data, drive_types[i] ))
207 {
208 ret = i;
209 break;
210 }
211 }
212 }
213 NtClose( hkey );
214 return ret;
215 }
216
217
218 /******************************************************************
219 * VOLUME_FindCdRomDataBestVoldesc
220 */
221 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
222 {
223 BYTE cur_vd_type, max_vd_type = 0;
224 BYTE buffer[16];
225 DWORD size, offs, best_offs = 0, extra_offs = 0;
226
227 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
228 {
229 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
230 * the volume label is displaced forward by 8
231 */
232 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
233 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
234 if (size != sizeof(buffer)) break;
235 /* check for non-ISO9660 signature */
236 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
237 cur_vd_type = buffer[extra_offs];
238 if (cur_vd_type == 0xff) /* voldesc set terminator */
239 break;
240 if (cur_vd_type > max_vd_type)
241 {
242 max_vd_type = cur_vd_type;
243 best_offs = offs + extra_offs;
244 }
245 }
246 return best_offs;
247 }
248
249
250 /***********************************************************************
251 * VOLUME_ReadFATSuperblock
252 */
253 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
254 {
255 DWORD size;
256
257 /* try a fixed disk, with a FAT partition */
258 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
259 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
260 size != SUPERBLOCK_SIZE)
261 return FS_ERROR;
262
263 /* FIXME: do really all FAT have their name beginning with
264 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
265 */
266 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
267 {
268 /* guess which type of FAT we have */
269 int reasonable;
270 unsigned int sectors,
271 sect_per_fat,
272 total_sectors,
273 num_boot_sectors,
274 num_fats,
275 num_root_dir_ents,
276 bytes_per_sector,
277 sectors_per_cluster,
278 nclust;
279 sect_per_fat = GETWORD(buff, 0x16);
280 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
281 total_sectors = GETWORD(buff, 0x13);
282 if (!total_sectors)
283 total_sectors = GETLONG(buff, 0x20);
284 num_boot_sectors = GETWORD(buff, 0x0e);
285 num_fats = buff[0x10];
286 num_root_dir_ents = GETWORD(buff, 0x11);
287 bytes_per_sector = GETWORD(buff, 0x0b);
288 sectors_per_cluster = buff[0x0d];
289 /* check if the parameters are reasonable and will not cause
290 * arithmetic errors in the calculation */
291 reasonable = num_boot_sectors < 16 &&
292 num_fats < 16 &&
293 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
294 sectors_per_cluster > 1;
295 if (!reasonable) return FS_UNKNOWN;
296 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
297 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
298 nclust = sectors / sectors_per_cluster;
299 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
300 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
301 if (nclust < 65525)
302 {
303 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
304 !memcmp(buff+0x36, "FAT", 3))
305 return FS_FAT1216;
306 }
307 }
308 return FS_UNKNOWN;
309 }
310
311
312 /***********************************************************************
313 * VOLUME_ReadCDSuperblock
314 */
315 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
316 {
317 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
318
319 if (!offs) return FS_UNKNOWN;
320
321 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
322 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
323 size != SUPERBLOCK_SIZE)
324 return FS_ERROR;
325
326 /* check for iso9660 present */
327 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
328 return FS_UNKNOWN;
329 }
330
331
332 /**************************************************************************
333 * VOLUME_GetSuperblockLabel
334 */
335 static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock,
336 WCHAR *label, DWORD len )
337 {
338 const BYTE *label_ptr = NULL;
339 DWORD label_len;
340
341 switch(type)
342 {
343 case FS_ERROR:
344 case FS_UNKNOWN:
345 label_len = 0;
346 break;
347 case FS_FAT1216:
348 label_ptr = superblock + 0x2b;
349 label_len = 11;
350 break;
351 case FS_FAT32:
352 label_ptr = superblock + 0x47;
353 label_len = 11;
354 break;
355 case FS_ISO9660:
356 {
357 BYTE ver = superblock[0x5a];
358
359 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
360 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
361 { /* yippee, unicode */
362 unsigned int i;
363
364 if (len > 17) len = 17;
365 for (i = 0; i < len-1; i++)
366 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
367 label[i] = 0;
368 while (i && label[i-1] == ' ') label[--i] = 0;
369 return;
370 }
371 label_ptr = superblock + 40;
372 label_len = 32;
373 break;
374 }
375 }
376 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
377 &label_len, (char*)label_ptr, label_len );
378 label_len /= sizeof(WCHAR);
379 label[label_len] = 0;
380 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
381 }
382
383
384 /**************************************************************************
385 * VOLUME_SetSuperblockLabel
386 */
387 static BOOL VOLUME_SetSuperblockLabel( enum fs_type type, HANDLE handle, const WCHAR *label )
388 {
389 CHAR label_data[11];
390 DWORD offset, len;
391
392 switch(type)
393 {
394 case FS_FAT1216:
395 offset = 0x2b;
396 break;
397 case FS_FAT32:
398 offset = 0x47;
399 break;
400 default:
401 SetLastError( ERROR_ACCESS_DENIED );
402 return FALSE;
403 }
404 RtlUnicodeToMultiByteN( label_data, sizeof(label_data), &len,
405 label, strlenW(label) * sizeof(WCHAR) );
406 if (len < sizeof(label_data))
407 memset( label_data + len, ' ', sizeof(label_data) - len );
408
409 return (SetFilePointer( handle, offset, NULL, FILE_BEGIN ) == offset &&
410 WriteFile( handle, label_data, sizeof(label_data), &len, NULL ));
411 }
412
413
414 /**************************************************************************
415 * VOLUME_GetSuperblockSerial
416 */
417 static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock )
418 {
419 switch(type)
420 {
421 case FS_ERROR:
422 case FS_UNKNOWN:
423 break;
424 case FS_FAT1216:
425 return GETLONG( superblock, 0x27 );
426 case FS_FAT32:
427 return GETLONG( superblock, 0x33 );
428 case FS_ISO9660:
429 {
430 BYTE sum[4];
431 int i;
432
433 sum[0] = sum[1] = sum[2] = sum[3] = 0;
434 for (i = 0; i < 2048; i += 4)
435 {
436 /* DON'T optimize this into DWORD !! (breaks overflow) */
437 sum[0] += superblock[i+0];
438 sum[1] += superblock[i+1];
439 sum[2] += superblock[i+2];
440 sum[3] += superblock[i+3];
441 }
442 /*
443 * OK, another braindead one... argh. Just believe it.
444 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
445 * It's true and nobody will ever be able to change it.
446 */
447 if (GetVersion() & 0x80000000)
448 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
449 else
450 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
451 }
452 }
453 return 0;
454 }
455
456
457 /**************************************************************************
458 * VOLUME_GetAudioCDSerial
459 */
460 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
461 {
462 DWORD serial = 0;
463 int i;
464
465 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
466 serial += ((toc->TrackData[i].Address[1] << 16) |
467 (toc->TrackData[i].Address[2] << 8) |
468 toc->TrackData[i].Address[3]);
469
470 /*
471 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
472 * frames.
473 * There it is collected for correcting the serial when there are less than
474 * 3 tracks.
475 */
476 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
477 {
478 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
479 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
480 serial += dwEnd - dwStart;
481 }
482 return serial;
483 }
484
485
486 /***********************************************************************
487 * GetVolumeInformationW (KERNEL32.@)
488 */
489 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
490 DWORD *serial, DWORD *filename_len, DWORD *flags,
491 LPWSTR fsname, DWORD fsname_len )
492 {
493 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
494 static const WCHAR fatW[] = {'F','A','T',0};
495 static const WCHAR ntfsW[] = {'N','T','F','S',0};
496 static const WCHAR cdfsW[] = {'C','D','F','S',0};
497
498 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
499 HANDLE handle;
500 enum fs_type type = FS_UNKNOWN;
501
502 if (!root)
503 {
504 WCHAR path[MAX_PATH];
505 GetCurrentDirectoryW( MAX_PATH, path );
506 device[4] = path[0];
507 }
508 else
509 {
510 if (!root[0] || root[1] != ':')
511 {
512 SetLastError( ERROR_INVALID_NAME );
513 return FALSE;
514 }
515 device[4] = root[0];
516 }
517
518 /* try to open the device */
519
520 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
521 NULL, OPEN_EXISTING, 0, 0 );
522 if (handle != INVALID_HANDLE_VALUE)
523 {
524 BYTE superblock[SUPERBLOCK_SIZE];
525 CDROM_TOC toc;
526 DWORD br;
527
528 /* check for audio CD */
529 /* FIXME: we only check the first track for now */
530 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
531 {
532 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
533 {
534 TRACE( "%s: found audio CD\n", debugstr_w(device) );
535 if (label) lstrcpynW( label, audiocdW, label_len );
536 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
537 CloseHandle( handle );
538 type = FS_ISO9660;
539 goto fill_fs_info;
540 }
541 type = VOLUME_ReadCDSuperblock( handle, superblock );
542 }
543 else
544 {
545 type = VOLUME_ReadFATSuperblock( handle, superblock );
546 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
547 }
548 CloseHandle( handle );
549 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
550 if (type == FS_ERROR) return FALSE;
551
552 if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len );
553 if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock );
554 goto fill_fs_info;
555 }
556 else TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
557
558 /* we couldn't open the device, fallback to default strategy */
559
560 switch(GetDriveTypeW( root ))
561 {
562 case DRIVE_UNKNOWN:
563 case DRIVE_NO_ROOT_DIR:
564 SetLastError( ERROR_NOT_READY );
565 return FALSE;
566 case DRIVE_REMOVABLE:
567 case DRIVE_FIXED:
568 case DRIVE_REMOTE:
569 case DRIVE_RAMDISK:
570 type = FS_UNKNOWN;
571 break;
572 case DRIVE_CDROM:
573 type = FS_ISO9660;
574 break;
575 }
576
577 if (label && label_len)
578 {
579 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
580
581 labelW[0] = device[4];
582 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
583 OPEN_EXISTING, 0, 0 );
584 if (handle != INVALID_HANDLE_VALUE)
585 {
586 char buffer[256], *p;
587 DWORD size;
588
589 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
590 CloseHandle( handle );
591 p = buffer + size;
592 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
593 *p = 0;
594 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, label_len ))
595 label[label_len-1] = 0;
596 }
597 else label[0] = 0;
598 }
599 if (serial)
600 {
601 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
602
603 serialW[0] = device[4];
604 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
605 OPEN_EXISTING, 0, 0 );
606 if (handle != INVALID_HANDLE_VALUE)
607 {
608 char buffer[32];
609 DWORD size;
610
611 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
612 CloseHandle( handle );
613 buffer[size] = 0;
614 *serial = strtoul( buffer, NULL, 16 );
615 }
616 else *serial = 0;
617 }
618
619 fill_fs_info: /* now fill in the information that depends on the file system type */
620
621 switch(type)
622 {
623 case FS_ISO9660:
624 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
625 if (filename_len) *filename_len = 221;
626 if (flags) *flags = FILE_READ_ONLY_VOLUME;
627 break;
628 case FS_FAT1216:
629 case FS_FAT32:
630 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
631 if (filename_len) *filename_len = 255;
632 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
633 break;
634 default:
635 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
636 if (filename_len) *filename_len = 255;
637 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
638 break;
639 }
640 return TRUE;
641 }
642
643
644 /***********************************************************************
645 * GetVolumeInformationA (KERNEL32.@)
646 */
647 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
648 DWORD label_len, DWORD *serial,
649 DWORD *filename_len, DWORD *flags,
650 LPSTR fsname, DWORD fsname_len )
651 {
652 WCHAR *rootW = NULL;
653 LPWSTR labelW, fsnameW;
654 BOOL ret;
655
656 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
657
658 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
659 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
660
661 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
662 filename_len, flags, fsnameW, fsname_len)))
663 {
664 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
665 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
666 }
667
668 HeapFree( GetProcessHeap(), 0, labelW );
669 HeapFree( GetProcessHeap(), 0, fsnameW );
670 return ret;
671 }
672
673
674
675 /***********************************************************************
676 * SetVolumeLabelW (KERNEL32.@)
677 */
678 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
679 {
680 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
681 HANDLE handle;
682 enum fs_type type = FS_UNKNOWN;
683
684 if (!root)
685 {
686 WCHAR path[MAX_PATH];
687 GetCurrentDirectoryW( MAX_PATH, path );
688 device[4] = path[0];
689 }
690 else
691 {
692 if (!root[0] || root[1] != ':')
693 {
694 SetLastError( ERROR_INVALID_NAME );
695 return FALSE;
696 }
697 device[4] = root[0];
698 }
699
700 /* try to open the device */
701
702 handle = CreateFileW( device, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE,
703 NULL, OPEN_EXISTING, 0, 0 );
704 if (handle == INVALID_HANDLE_VALUE)
705 {
706 /* try read-only */
707 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
708 NULL, OPEN_EXISTING, 0, 0 );
709 if (handle != INVALID_HANDLE_VALUE)
710 {
711 /* device can be read but not written, return error */
712 CloseHandle( handle );
713 SetLastError( ERROR_ACCESS_DENIED );
714 return FALSE;
715 }
716 }
717
718 if (handle != INVALID_HANDLE_VALUE)
719 {
720 BYTE superblock[SUPERBLOCK_SIZE];
721 BOOL ret;
722
723 type = VOLUME_ReadFATSuperblock( handle, superblock );
724 ret = VOLUME_SetSuperblockLabel( type, handle, label );
725 CloseHandle( handle );
726 return ret;
727 }
728 else
729 {
730 TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
731 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
732 }
733
734 /* we couldn't open the device, fallback to default strategy */
735
736 switch(GetDriveTypeW( root ))
737 {
738 case DRIVE_UNKNOWN:
739 case DRIVE_NO_ROOT_DIR:
740 SetLastError( ERROR_NOT_READY );
741 break;
742 case DRIVE_REMOVABLE:
743 case DRIVE_FIXED:
744 {
745 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
746
747 labelW[0] = device[4];
748 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
749 CREATE_ALWAYS, 0, 0 );
750 if (handle != INVALID_HANDLE_VALUE)
751 {
752 char buffer[64];
753 DWORD size;
754
755 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
756 buffer[sizeof(buffer)-1] = 0;
757 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
758 CloseHandle( handle );
759 return TRUE;
760 }
761 break;
762 }
763 case DRIVE_REMOTE:
764 case DRIVE_RAMDISK:
765 case DRIVE_CDROM:
766 SetLastError( ERROR_ACCESS_DENIED );
767 break;
768 }
769 return FALSE;
770 }
771
772 /***********************************************************************
773 * SetVolumeLabelA (KERNEL32.@)
774 */
775 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
776 {
777 WCHAR *rootW = NULL, *volnameW = NULL;
778 BOOL ret;
779
780 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
781 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
782 ret = SetVolumeLabelW( rootW, volnameW );
783 HeapFree( GetProcessHeap(), 0, volnameW );
784 return ret;
785 }
786
787
788 /***********************************************************************
789 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
790 */
791 BOOL WINAPI GetVolumeNameForVolumeMountPointW(LPCWSTR str, LPWSTR dst, DWORD size)
792 {
793 FIXME("(%s, %p, %lx): stub\n", debugstr_w(str), dst, size);
794 return 0;
795 }
796
797
798 /***********************************************************************
799 * DefineDosDeviceW (KERNEL32.@)
800 */
801 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
802 {
803 DWORD len, dosdev;
804 BOOL ret = FALSE;
805 char *path = NULL, *target, *p;
806
807 if (!(flags & DDD_REMOVE_DEFINITION))
808 {
809 if (!(flags & DDD_RAW_TARGET_PATH))
810 {
811 FIXME( "(0x%08lx,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
812 flags, debugstr_w(devname), debugstr_w(targetpath) );
813 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
814 return FALSE;
815 }
816
817 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
818 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
819 {
820 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
821 for (p = target; *p; p++) if (*p == '\\') *p = '/';
822 }
823 else
824 {
825 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
826 return FALSE;
827 }
828 }
829 else target = NULL;
830
831 /* first check for a DOS device */
832
833 if ((dosdev = RtlIsDosDeviceName_U( devname )))
834 {
835 WCHAR name[5];
836
837 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
838 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
839 path = get_dos_device_path( name );
840 }
841 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
842 {
843 path = get_dos_device_path( devname );
844 }
845 else SetLastError( ERROR_FILE_NOT_FOUND );
846
847 if (path)
848 {
849 if (target)
850 {
851 TRACE( "creating symlink %s -> %s\n", path, target );
852 unlink( path );
853 if (!symlink( target, path )) ret = TRUE;
854 else FILE_SetDosError();
855 }
856 else
857 {
858 TRACE( "removing symlink %s\n", path );
859 if (!unlink( path )) ret = TRUE;
860 else FILE_SetDosError();
861 }
862 HeapFree( GetProcessHeap(), 0, path );
863 }
864 HeapFree( GetProcessHeap(), 0, target );
865 return ret;
866 }
867
868
869 /***********************************************************************
870 * DefineDosDeviceA (KERNEL32.@)
871 */
872 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
873 {
874 WCHAR *devW, *targetW = NULL;
875 BOOL ret;
876
877 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
878 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
879 ret = DefineDosDeviceW(flags, devW, targetW);
880 HeapFree( GetProcessHeap(), 0, targetW );
881 return ret;
882 }
883
884
885 /***********************************************************************
886 * QueryDosDeviceW (KERNEL32.@)
887 *
888 * returns array of strings terminated by \0, terminated by \0
889 */
890 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
891 {
892 static const WCHAR auxW[] = {'A','U','X',0};
893 static const WCHAR nulW[] = {'N','U','L',0};
894 static const WCHAR prnW[] = {'P','R','N',0};
895 static const WCHAR comW[] = {'C','O','M',0};
896 static const WCHAR lptW[] = {'L','P','T',0};
897 static const WCHAR rootW[] = {'A',':','\\',0};
898 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
899 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
900 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
901
902 UNICODE_STRING nt_name;
903 ANSI_STRING unix_name;
904 WCHAR nt_buffer[10];
905 NTSTATUS status;
906
907 if (!bufsize)
908 {
909 SetLastError( ERROR_INSUFFICIENT_BUFFER );
910 return 0;
911 }
912
913 if (devname)
914 {
915 WCHAR *p, name[5];
916 char *path, *link;
917 DWORD dosdev, ret = 0;
918
919 if ((dosdev = RtlIsDosDeviceName_U( devname )))
920 {
921 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
922 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
923 }
924 else if (devname[0] && devname[1] == ':' && !devname[2])
925 {
926 memcpy( name, devname, 3 * sizeof(WCHAR) );
927 }
928 else
929 {
930 SetLastError( ERROR_BAD_PATHNAME );
931 return 0;
932 }
933
934 if (!(path = get_dos_device_path( name ))) return 0;
935 link = read_symlink( path );
936 HeapFree( GetProcessHeap(), 0, path );
937
938 if (link)
939 {
940 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
941 HeapFree( GetProcessHeap(), 0, link );
942 }
943 else if (dosdev) /* look for device defaults */
944 {
945 if (!strcmpiW( name, auxW ))
946 {
947 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
948 {
949 memcpy( target, com1W, sizeof(com1W) );
950 ret = sizeof(com1W)/sizeof(WCHAR);
951 }
952 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
953 return ret;
954 }
955 if (!strcmpiW( name, prnW ))
956 {
957 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
958 {
959 memcpy( target, lpt1W, sizeof(lpt1W) );
960 ret = sizeof(lpt1W)/sizeof(WCHAR);
961 }
962 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
963 return ret;
964 }
965
966 nt_buffer[0] = '\\';
967 nt_buffer[1] = '?';
968 nt_buffer[2] = '?';
969 nt_buffer[3] = '\\';
970 strcpyW( nt_buffer + 4, name );
971 RtlInitUnicodeString( &nt_name, nt_buffer );
972 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
973 if (status) SetLastError( RtlNtStatusToDosError(status) );
974 else
975 {
976 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
977 RtlFreeAnsiString( &unix_name );
978 }
979 }
980
981 if (ret)
982 {
983 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
984 for (p = target; *p; p++) if (*p == '/') *p = '\\';
985 }
986
987 return ret;
988 }
989 else /* return a list of all devices */
990 {
991 WCHAR *p = target;
992 int i;
993
994 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
995 {
996 SetLastError( ERROR_INSUFFICIENT_BUFFER );
997 return 0;
998 }
999
1000 memcpy( p, auxW, sizeof(auxW) );
1001 p += sizeof(auxW) / sizeof(WCHAR);
1002 memcpy( p, nulW, sizeof(nulW) );
1003 p += sizeof(nulW) / sizeof(WCHAR);
1004 memcpy( p, prnW, sizeof(prnW) );
1005 p += sizeof(prnW) / sizeof(WCHAR);
1006
1007 strcpyW( nt_buffer, com0W );
1008 RtlInitUnicodeString( &nt_name, nt_buffer );
1009
1010 for (i = 1; i <= 9; i++)
1011 {
1012 nt_buffer[7] = '0' + i;
1013 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1014 {
1015 RtlFreeAnsiString( &unix_name );
1016 if (p + 5 >= target + bufsize)
1017 {
1018 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1019 return 0;
1020 }
1021 strcpyW( p, comW );
1022 p[3] = '0' + i;
1023 p[4] = 0;
1024 p += 5;
1025 }
1026 }
1027 strcpyW( nt_buffer + 4, lptW );
1028 for (i = 1; i <= 9; i++)
1029 {
1030 nt_buffer[7] = '0' + i;
1031 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1032 {
1033 RtlFreeAnsiString( &unix_name );
1034 if (p + 5 >= target + bufsize)
1035 {
1036 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1037 return 0;
1038 }
1039 strcpyW( p, lptW );
1040 p[3] = '0' + i;
1041 p[4] = 0;
1042 p += 5;
1043 }
1044 }
1045
1046 strcpyW( nt_buffer + 4, rootW );
1047 RtlInitUnicodeString( &nt_name, nt_buffer );
1048
1049 for (i = 0; i < 26; i++)
1050 {
1051 nt_buffer[4] = 'a' + i;
1052 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1053 {
1054 RtlFreeAnsiString( &unix_name );
1055 if (p + 3 >= target + bufsize)
1056 {
1057 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1058 return 0;
1059 }
1060 *p++ = 'A' + i;
1061 *p++ = ':';
1062 *p++ = 0;
1063 }
1064 }
1065 *p++ = 0; /* terminating null */
1066 return p - target;
1067 }
1068 }
1069
1070
1071 /***********************************************************************
1072 * QueryDosDeviceA (KERNEL32.@)
1073 *
1074 * returns array of strings terminated by \0, terminated by \0
1075 */
1076 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1077 {
1078 DWORD ret = 0, retW;
1079 WCHAR *devnameW = NULL;
1080 LPWSTR targetW;
1081
1082 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1083
1084 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1085 if (!targetW)
1086 {
1087 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1088 return 0;
1089 }
1090
1091 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1092
1093 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1094
1095 HeapFree(GetProcessHeap(), 0, targetW);
1096 return ret;
1097 }
1098
1099
1100 /***********************************************************************
1101 * GetLogicalDrives (KERNEL32.@)
1102 */
1103 DWORD WINAPI GetLogicalDrives(void)
1104 {
1105 const char *config_dir = wine_get_config_dir();
1106 struct stat st;
1107 char *buffer, *dev;
1108 DWORD ret = 0;
1109 int i;
1110
1111 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1112 {
1113 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1114 return 0;
1115 }
1116 strcpy( buffer, config_dir );
1117 strcat( buffer, "/dosdevices/a:" );
1118 dev = buffer + strlen(buffer) - 2;
1119
1120 for (i = 0; i < 26; i++)
1121 {
1122 *dev = 'a' + i;
1123 if (!stat( buffer, &st )) ret |= (1 << i);
1124 }
1125 HeapFree( GetProcessHeap(), 0, buffer );
1126 return ret;
1127 }
1128
1129
1130 /***********************************************************************
1131 * GetLogicalDriveStringsA (KERNEL32.@)
1132 */
1133 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1134 {
1135 DWORD drives = GetLogicalDrives();
1136 UINT drive, count;
1137
1138 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1139 if ((count * 4) + 1 > len) return count * 4 + 1;
1140
1141 for (drive = 0; drive < 26; drive++)
1142 {
1143 if (drives & (1 << drive))
1144 {
1145 *buffer++ = 'a' + drive;
1146 *buffer++ = ':';
1147 *buffer++ = '\\';
1148 *buffer++ = 0;
1149 }
1150 }
1151 *buffer = 0;
1152 return count * 4;
1153 }
1154
1155
1156 /***********************************************************************
1157 * GetLogicalDriveStringsW (KERNEL32.@)
1158 */
1159 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1160 {
1161 DWORD drives = GetLogicalDrives();
1162 UINT drive, count;
1163
1164 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1165 if ((count * 4) + 1 > len) return count * 4 + 1;
1166
1167 for (drive = 0; drive < 26; drive++)
1168 {
1169 if (drives & (1 << drive))
1170 {
1171 *buffer++ = 'a' + drive;
1172 *buffer++ = ':';
1173 *buffer++ = '\\';
1174 *buffer++ = 0;
1175 }
1176 }
1177 *buffer = 0;
1178 return count * 4;
1179 }
1180
1181
1182 /***********************************************************************
1183 * GetDriveTypeW (KERNEL32.@)
1184 *
1185 * Returns the type of the disk drive specified. If root is NULL the
1186 * root of the current directory is used.
1187 *
1188 * RETURNS
1189 *
1190 * Type of drive (from Win32 SDK):
1191 *
1192 * DRIVE_UNKNOWN unable to find out anything about the drive
1193 * DRIVE_NO_ROOT_DIR nonexistent root dir
1194 * DRIVE_REMOVABLE the disk can be removed from the machine
1195 * DRIVE_FIXED the disk cannot be removed from the machine
1196 * DRIVE_REMOTE network disk
1197 * DRIVE_CDROM CDROM drive
1198 * DRIVE_RAMDISK virtual disk in RAM
1199 */
1200 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1201 {
1202 FILE_FS_DEVICE_INFORMATION info;
1203 IO_STATUS_BLOCK io;
1204 NTSTATUS status;
1205 HANDLE handle;
1206 UINT ret;
1207
1208 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1209
1210 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1211 NtClose( handle );
1212 if (status != STATUS_SUCCESS)
1213 {
1214 SetLastError( RtlNtStatusToDosError(status) );
1215 ret = DRIVE_UNKNOWN;
1216 }
1217 else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1218 {
1219 switch (info.DeviceType)
1220 {
1221 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1222 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1223 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1224 case FILE_DEVICE_DISK_FILE_SYSTEM:
1225 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1226 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1227 else ret = DRIVE_FIXED;
1228 break;
1229 default:
1230 ret = DRIVE_UNKNOWN;
1231 break;
1232 }
1233 }
1234 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1235 return ret;
1236 }
1237
1238
1239 /***********************************************************************
1240 * GetDriveTypeA (KERNEL32.@)
1241 */
1242 UINT WINAPI GetDriveTypeA( LPCSTR root )
1243 {
1244 WCHAR *rootW = NULL;
1245
1246 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1247 return GetDriveTypeW( rootW );
1248 }
1249
1250
1251 /***********************************************************************
1252 * GetDiskFreeSpaceExW (KERNEL32.@)
1253 *
1254 * This function is used to acquire the size of the available and
1255 * total space on a logical volume.
1256 *
1257 * RETURNS
1258 *
1259 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1260 * detailed error information.
1261 *
1262 */
1263 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1264 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1265 {
1266 FILE_FS_SIZE_INFORMATION info;
1267 IO_STATUS_BLOCK io;
1268 NTSTATUS status;
1269 HANDLE handle;
1270 UINT units;
1271
1272 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1273
1274 if (!open_device_root( root, &handle )) return FALSE;
1275
1276 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1277 NtClose( handle );
1278 if (status != STATUS_SUCCESS)
1279 {
1280 SetLastError( RtlNtStatusToDosError(status) );
1281 return FALSE;
1282 }
1283
1284 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1285 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1286 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1287 /* FIXME: this one should take quotas into account */
1288 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1289 return TRUE;
1290 }
1291
1292
1293 /***********************************************************************
1294 * GetDiskFreeSpaceExA (KERNEL32.@)
1295 */
1296 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1297 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1298 {
1299 WCHAR *rootW = NULL;
1300
1301 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1302 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1303 }
1304
1305
1306 /***********************************************************************
1307 * GetDiskFreeSpaceW (KERNEL32.@)
1308 */
1309 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1310 LPDWORD sector_bytes, LPDWORD free_clusters,
1311 LPDWORD total_clusters )
1312 {
1313 FILE_FS_SIZE_INFORMATION info;
1314 IO_STATUS_BLOCK io;
1315 NTSTATUS status;
1316 HANDLE handle;
1317 UINT units;
1318
1319 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1320 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1321
1322 if (!open_device_root( root, &handle )) return FALSE;
1323
1324 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1325 NtClose( handle );
1326 if (status != STATUS_SUCCESS)
1327 {
1328 SetLastError( RtlNtStatusToDosError(status) );
1329 return FALSE;
1330 }
1331
1332 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1333
1334 /* cap the size and available at 2GB as per specs */
1335 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1336 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1337 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff)
1338 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1339
1340 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1341 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1342 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1343 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1344 return TRUE;
1345 }
1346
1347
1348 /***********************************************************************
1349 * GetDiskFreeSpaceA (KERNEL32.@)
1350 */
1351 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1352 LPDWORD sector_bytes, LPDWORD free_clusters,
1353 LPDWORD total_clusters )
1354 {
1355 WCHAR *rootW = NULL;
1356
1357 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1358 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1359 }
1360
1361 /***********************************************************************
1362 * GetVolumePathNameA (KERNEL32.@)
1363 */
1364 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1365 {
1366 FIXME("(%s, %p, %ld), stub!\n", debugstr_a(filename), volumepathname, buflen);
1367 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1368 return FALSE;
1369 }
1370
1371 /***********************************************************************
1372 * GetVolumePathNameW (KERNEL32.@)
1373 */
1374 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1375 {
1376 FIXME("(%s, %p, %ld), stub!\n", debugstr_w(filename), volumepathname, buflen);
1377 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1378 return FALSE;
1379 }
GSOC 2012 project to enhance the control panel