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[wine/kumbayo.git] / dlls / kernel32 / volume.c
blob1869d0d072a00d6cdb3f8854509e6ee904b457dc
1 /*
2 * Volume management functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 1996, 2004 Alexandre Julliard
6 * Copyright 1999 Petr Tomasek
7 * Copyright 2000 Andreas Mohr
8 * Copyright 2003 Eric Pouech
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "winnls.h"
37 #include "winternl.h"
38 #include "winioctl.h"
39 #include "ntddcdrm.h"
40 #include "kernel_private.h"
41 #include "wine/library.h"
42 #include "wine/unicode.h"
43 #include "wine/debug.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(volume);
46
47 #define SUPERBLOCK_SIZE 2048
48
49 #define CDFRAMES_PERSEC 75
50 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
51 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
52 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
53
54 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
55 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
56
57 enum fs_type
58 {
59 FS_ERROR, /* error accessing the device */
60 FS_UNKNOWN, /* unknown file system */
61 FS_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 /* get the label by reading it from a file at the root of the filesystem */
165 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
166 {
167 HANDLE handle;
168 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
169
170 labelW[0] = device[4];
171 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
172 OPEN_EXISTING, 0, 0 );
173 if (handle != INVALID_HANDLE_VALUE)
174 {
175 char buffer[256], *p;
176 DWORD size;
177
178 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
179 CloseHandle( handle );
180 p = buffer + size;
181 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
182 *p = 0;
183 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
184 label[len-1] = 0;
185 }
186 else label[0] = 0;
187 }
188
189 /* get the serial number by reading it from a file at the root of the filesystem */
190 static DWORD get_filesystem_serial( const WCHAR *device )
191 {
192 HANDLE handle;
193 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
194
195 serialW[0] = device[4];
196 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
197 OPEN_EXISTING, 0, 0 );
198 if (handle != INVALID_HANDLE_VALUE)
199 {
200 char buffer[32];
201 DWORD size;
202
203 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
204 CloseHandle( handle );
205 buffer[size] = 0;
206 return strtoul( buffer, NULL, 16 );
207 }
208 else return 0;
209 }
210
211 /* fetch the type of a drive from the registry */
212 static UINT get_registry_drive_type( const WCHAR *root )
213 {
214 static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
215 'S','o','f','t','w','a','r','e','\\',
216 'W','i','n','e','\\',
217 'D','r','i','v','e','s',0 };
218 OBJECT_ATTRIBUTES attr;
219 UNICODE_STRING nameW;
220 HANDLE hkey;
221 DWORD dummy;
222 UINT ret = DRIVE_UNKNOWN;
223 char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
224 WCHAR driveW[] = {'A',':',0};
225
226 attr.Length = sizeof(attr);
227 attr.RootDirectory = 0;
228 attr.ObjectName = &nameW;
229 attr.Attributes = 0;
230 attr.SecurityDescriptor = NULL;
231 attr.SecurityQualityOfService = NULL;
232 RtlInitUnicodeString( &nameW, drive_types_keyW );
233 /* @@ Wine registry key: HKLM\Software\Wine\Drives */
234 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
235
236 if (root) driveW[0] = root[0];
237 else
238 {
239 WCHAR path[MAX_PATH];
240 GetCurrentDirectoryW( MAX_PATH, path );
241 driveW[0] = path[0];
242 }
243
244 RtlInitUnicodeString( &nameW, driveW );
245 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
246 {
247 unsigned int i;
248 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
249
250 for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
251 {
252 if (!strcmpiW( data, drive_types[i] ))
253 {
254 ret = i;
255 break;
256 }
257 }
258 }
259 NtClose( hkey );
260 return ret;
261 }
262
263
264 /******************************************************************
265 * VOLUME_FindCdRomDataBestVoldesc
266 */
267 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
268 {
269 BYTE cur_vd_type, max_vd_type = 0;
270 BYTE buffer[0x800];
271 DWORD size, offs, best_offs = 0, extra_offs = 0;
272
273 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
274 {
275 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
276 * the volume label is displaced forward by 8
277 */
278 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
279 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
280 if (size != sizeof(buffer)) break;
281 /* check for non-ISO9660 signature */
282 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
283 cur_vd_type = buffer[extra_offs];
284 if (cur_vd_type == 0xff) /* voldesc set terminator */
285 break;
286 if (cur_vd_type > max_vd_type)
287 {
288 max_vd_type = cur_vd_type;
289 best_offs = offs + extra_offs;
290 }
291 }
292 return best_offs;
293 }
294
295
296 /***********************************************************************
297 * VOLUME_ReadFATSuperblock
298 */
299 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
300 {
301 DWORD size;
302
303 /* try a fixed disk, with a FAT partition */
304 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
305 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
306 return FS_ERROR;
307
308 if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
309
310 /* FIXME: do really all FAT have their name beginning with
311 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
312 */
313 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
314 {
315 /* guess which type of FAT we have */
316 int reasonable;
317 unsigned int sectors,
318 sect_per_fat,
319 total_sectors,
320 num_boot_sectors,
321 num_fats,
322 num_root_dir_ents,
323 bytes_per_sector,
324 sectors_per_cluster,
325 nclust;
326 sect_per_fat = GETWORD(buff, 0x16);
327 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
328 total_sectors = GETWORD(buff, 0x13);
329 if (!total_sectors)
330 total_sectors = GETLONG(buff, 0x20);
331 num_boot_sectors = GETWORD(buff, 0x0e);
332 num_fats = buff[0x10];
333 num_root_dir_ents = GETWORD(buff, 0x11);
334 bytes_per_sector = GETWORD(buff, 0x0b);
335 sectors_per_cluster = buff[0x0d];
336 /* check if the parameters are reasonable and will not cause
337 * arithmetic errors in the calculation */
338 reasonable = num_boot_sectors < 16 &&
339 num_fats < 16 &&
340 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
341 sectors_per_cluster > 1;
342 if (!reasonable) return FS_UNKNOWN;
343 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
344 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
345 nclust = sectors / sectors_per_cluster;
346 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
347 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
348 if (nclust < 65525)
349 {
350 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
351 !memcmp(buff+0x36, "FAT", 3))
352 return FS_FAT1216;
353 }
354 }
355 return FS_UNKNOWN;
356 }
357
358
359 /***********************************************************************
360 * VOLUME_ReadCDSuperblock
361 */
362 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
363 {
364 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
365
366 if (!offs) return FS_UNKNOWN;
367
368 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
369 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
370 size != SUPERBLOCK_SIZE)
371 return FS_ERROR;
372
373 /* check for iso9660 present */
374 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
375 return FS_UNKNOWN;
376 }
377
378
379 /**************************************************************************
380 * VOLUME_GetSuperblockLabel
381 */
382 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
383 WCHAR *label, DWORD len )
384 {
385 const BYTE *label_ptr = NULL;
386 DWORD label_len;
387
388 switch(type)
389 {
390 case FS_ERROR:
391 label_len = 0;
392 break;
393 case FS_UNKNOWN:
394 get_filesystem_label( device, label, len );
395 return;
396 case FS_FAT1216:
397 label_ptr = superblock + 0x2b;
398 label_len = 11;
399 break;
400 case FS_FAT32:
401 label_ptr = superblock + 0x47;
402 label_len = 11;
403 break;
404 case FS_ISO9660:
405 {
406 BYTE ver = superblock[0x5a];
407
408 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
409 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
410 { /* yippee, unicode */
411 unsigned int i;
412
413 if (len > 17) len = 17;
414 for (i = 0; i < len-1; i++)
415 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
416 label[i] = 0;
417 while (i && label[i-1] == ' ') label[--i] = 0;
418 return;
419 }
420 label_ptr = superblock + 40;
421 label_len = 32;
422 break;
423 }
424 }
425 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
426 &label_len, (LPCSTR)label_ptr, label_len );
427 label_len /= sizeof(WCHAR);
428 label[label_len] = 0;
429 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
430 }
431
432
433 /**************************************************************************
434 * VOLUME_GetSuperblockSerial
435 */
436 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
437 {
438 switch(type)
439 {
440 case FS_ERROR:
441 break;
442 case FS_UNKNOWN:
443 return get_filesystem_serial( device );
444 case FS_FAT1216:
445 return GETLONG( superblock, 0x27 );
446 case FS_FAT32:
447 return GETLONG( superblock, 0x33 );
448 case FS_ISO9660:
449 {
450 BYTE sum[4];
451 int i;
452
453 sum[0] = sum[1] = sum[2] = sum[3] = 0;
454 for (i = 0; i < 2048; i += 4)
455 {
456 /* DON'T optimize this into DWORD !! (breaks overflow) */
457 sum[0] += superblock[i+0];
458 sum[1] += superblock[i+1];
459 sum[2] += superblock[i+2];
460 sum[3] += superblock[i+3];
461 }
462 /*
463 * OK, another braindead one... argh. Just believe it.
464 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
465 * It's true and nobody will ever be able to change it.
466 */
467 if (GetVersion() & 0x80000000)
468 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
469 else
470 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
471 }
472 }
473 return 0;
474 }
475
476
477 /**************************************************************************
478 * VOLUME_GetAudioCDSerial
479 */
480 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
481 {
482 DWORD serial = 0;
483 int i;
484
485 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
486 serial += ((toc->TrackData[i].Address[1] << 16) |
487 (toc->TrackData[i].Address[2] << 8) |
488 toc->TrackData[i].Address[3]);
489
490 /*
491 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
492 * frames.
493 * There it is collected for correcting the serial when there are less than
494 * 3 tracks.
495 */
496 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
497 {
498 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
499 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
500 serial += dwEnd - dwStart;
501 }
502 return serial;
503 }
504
505
506 /***********************************************************************
507 * GetVolumeInformationW (KERNEL32.@)
508 */
509 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
510 DWORD *serial, DWORD *filename_len, DWORD *flags,
511 LPWSTR fsname, DWORD fsname_len )
512 {
513 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
514 static const WCHAR fatW[] = {'F','A','T',0};
515 static const WCHAR ntfsW[] = {'N','T','F','S',0};
516 static const WCHAR cdfsW[] = {'C','D','F','S',0};
517
518 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
519 HANDLE handle;
520 enum fs_type type = FS_UNKNOWN;
521
522 if (!root)
523 {
524 WCHAR path[MAX_PATH];
525 GetCurrentDirectoryW( MAX_PATH, path );
526 device[4] = path[0];
527 }
528 else
529 {
530 if (!root[0] || root[1] != ':')
531 {
532 SetLastError( ERROR_INVALID_NAME );
533 return FALSE;
534 }
535 device[4] = root[0];
536 }
537
538 /* try to open the device */
539
540 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
541 NULL, OPEN_EXISTING, 0, 0 );
542 if (handle != INVALID_HANDLE_VALUE)
543 {
544 BYTE superblock[SUPERBLOCK_SIZE];
545 CDROM_TOC toc;
546 DWORD br;
547
548 /* check for audio CD */
549 /* FIXME: we only check the first track for now */
550 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
551 {
552 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
553 {
554 TRACE( "%s: found audio CD\n", debugstr_w(device) );
555 if (label) lstrcpynW( label, audiocdW, label_len );
556 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
557 CloseHandle( handle );
558 type = FS_ISO9660;
559 goto fill_fs_info;
560 }
561 type = VOLUME_ReadCDSuperblock( handle, superblock );
562 }
563 else
564 {
565 type = VOLUME_ReadFATSuperblock( handle, superblock );
566 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
567 }
568 CloseHandle( handle );
569 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
570 if (type == FS_ERROR) return FALSE;
571
572 if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
573 if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
574 goto fill_fs_info;
575 }
576 else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
577
578 /* we couldn't open the device, fallback to default strategy */
579
580 switch(GetDriveTypeW( root ))
581 {
582 case DRIVE_UNKNOWN:
583 case DRIVE_NO_ROOT_DIR:
584 SetLastError( ERROR_NOT_READY );
585 return FALSE;
586 case DRIVE_REMOVABLE:
587 case DRIVE_FIXED:
588 case DRIVE_REMOTE:
589 case DRIVE_RAMDISK:
590 type = FS_UNKNOWN;
591 break;
592 case DRIVE_CDROM:
593 type = FS_ISO9660;
594 break;
595 }
596
597 if (label && label_len) get_filesystem_label( device, label, label_len );
598 if (serial) *serial = get_filesystem_serial( device );
599
600 fill_fs_info: /* now fill in the information that depends on the file system type */
601
602 switch(type)
603 {
604 case FS_ISO9660:
605 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
606 if (filename_len) *filename_len = 221;
607 if (flags) *flags = FILE_READ_ONLY_VOLUME;
608 break;
609 case FS_FAT1216:
610 case FS_FAT32:
611 if (fsname) lstrcpynW( fsname, fatW, 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 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
721 CREATE_ALWAYS, 0, 0 );
722 if (handle != INVALID_HANDLE_VALUE)
723 {
724 char buffer[64];
725 DWORD size;
726
727 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
728 buffer[sizeof(buffer)-1] = 0;
729 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
730 CloseHandle( handle );
731 return TRUE;
732 }
733 break;
734 }
735 case DRIVE_REMOTE:
736 case DRIVE_RAMDISK:
737 case DRIVE_CDROM:
738 SetLastError( ERROR_ACCESS_DENIED );
739 break;
740 }
741 return FALSE;
742 }
743
744 /***********************************************************************
745 * SetVolumeLabelA (KERNEL32.@)
746 */
747 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
748 {
749 WCHAR *rootW = NULL, *volnameW = NULL;
750 BOOL ret;
751
752 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
753 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
754 ret = SetVolumeLabelW( rootW, volnameW );
755 HeapFree( GetProcessHeap(), 0, volnameW );
756 return ret;
757 }
758
759
760 /***********************************************************************
761 * GetVolumeNameForVolumeMountPointA (KERNEL32.@)
762 */
763 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
764 {
765 BOOL ret;
766 WCHAR volumeW[50], *pathW = NULL;
767 DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
768
769 TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
770
771 if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
772 return FALSE;
773
774 if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
775 FILE_name_WtoA( volumeW, -1, volume, len );
776
777 HeapFree( GetProcessHeap(), 0, pathW );
778 return ret;
779 }
780
781 /***********************************************************************
782 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
783 */
784 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
785 {
786 BOOL ret = FALSE;
787 static const WCHAR fmt[] =
788 { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
789
790 TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
791
792 if (!path || !path[0]) return FALSE;
793
794 if (size >= sizeof(fmt) / sizeof(WCHAR))
795 {
796 /* FIXME: will break when we support volume mounts */
797 sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
798 ret = TRUE;
799 }
800 return ret;
801 }
802
803 /***********************************************************************
804 * DefineDosDeviceW (KERNEL32.@)
805 */
806 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
807 {
808 DWORD len, dosdev;
809 BOOL ret = FALSE;
810 char *path = NULL, *target, *p;
811
812 TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
813
814 if (!(flags & DDD_REMOVE_DEFINITION))
815 {
816 if (!(flags & DDD_RAW_TARGET_PATH))
817 {
818 FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
819 flags, debugstr_w(devname), debugstr_w(targetpath) );
820 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
821 return FALSE;
822 }
823
824 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
825 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
826 {
827 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
828 for (p = target; *p; p++) if (*p == '\\') *p = '/';
829 }
830 else
831 {
832 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
833 return FALSE;
834 }
835 }
836 else target = NULL;
837
838 /* first check for a DOS device */
839
840 if ((dosdev = RtlIsDosDeviceName_U( devname )))
841 {
842 WCHAR name[5];
843
844 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
845 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
846 path = get_dos_device_path( name );
847 }
848 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
849 {
850 path = get_dos_device_path( devname );
851 }
852 else SetLastError( ERROR_FILE_NOT_FOUND );
853
854 if (path)
855 {
856 if (target)
857 {
858 TRACE( "creating symlink %s -> %s\n", path, target );
859 unlink( path );
860 if (!symlink( target, path )) ret = TRUE;
861 else FILE_SetDosError();
862 }
863 else
864 {
865 TRACE( "removing symlink %s\n", path );
866 if (!unlink( path )) ret = TRUE;
867 else FILE_SetDosError();
868 }
869 HeapFree( GetProcessHeap(), 0, path );
870 }
871 HeapFree( GetProcessHeap(), 0, target );
872 return ret;
873 }
874
875
876 /***********************************************************************
877 * DefineDosDeviceA (KERNEL32.@)
878 */
879 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
880 {
881 WCHAR *devW, *targetW = NULL;
882 BOOL ret;
883
884 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
885 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
886 ret = DefineDosDeviceW(flags, devW, targetW);
887 HeapFree( GetProcessHeap(), 0, targetW );
888 return ret;
889 }
890
891
892 /***********************************************************************
893 * QueryDosDeviceW (KERNEL32.@)
894 *
895 * returns array of strings terminated by \0, terminated by \0
896 */
897 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
898 {
899 static const WCHAR auxW[] = {'A','U','X',0};
900 static const WCHAR nulW[] = {'N','U','L',0};
901 static const WCHAR prnW[] = {'P','R','N',0};
902 static const WCHAR comW[] = {'C','O','M',0};
903 static const WCHAR lptW[] = {'L','P','T',0};
904 static const WCHAR rootW[] = {'A',':','\\',0};
905 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
906 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
907 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
908
909 UNICODE_STRING nt_name;
910 ANSI_STRING unix_name;
911 WCHAR nt_buffer[10];
912 NTSTATUS status;
913
914 if (!bufsize)
915 {
916 SetLastError( ERROR_INSUFFICIENT_BUFFER );
917 return 0;
918 }
919
920 if (devname)
921 {
922 WCHAR *p, name[5];
923 char *path, *link;
924 DWORD dosdev, ret = 0;
925
926 if ((dosdev = RtlIsDosDeviceName_U( devname )))
927 {
928 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
929 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
930 }
931 else if (devname[0] && devname[1] == ':' && !devname[2])
932 {
933 memcpy( name, devname, 3 * sizeof(WCHAR) );
934 }
935 else
936 {
937 SetLastError( ERROR_BAD_PATHNAME );
938 return 0;
939 }
940
941 if (!(path = get_dos_device_path( name ))) return 0;
942 link = read_symlink( path );
943 HeapFree( GetProcessHeap(), 0, path );
944
945 if (link)
946 {
947 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
948 HeapFree( GetProcessHeap(), 0, link );
949 }
950 else if (dosdev) /* look for device defaults */
951 {
952 if (!strcmpiW( name, auxW ))
953 {
954 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
955 {
956 memcpy( target, com1W, sizeof(com1W) );
957 ret = sizeof(com1W)/sizeof(WCHAR);
958 }
959 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
960 return ret;
961 }
962 if (!strcmpiW( name, prnW ))
963 {
964 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
965 {
966 memcpy( target, lpt1W, sizeof(lpt1W) );
967 ret = sizeof(lpt1W)/sizeof(WCHAR);
968 }
969 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
970 return ret;
971 }
972
973 nt_buffer[0] = '\\';
974 nt_buffer[1] = '?';
975 nt_buffer[2] = '?';
976 nt_buffer[3] = '\\';
977 strcpyW( nt_buffer + 4, name );
978 RtlInitUnicodeString( &nt_name, nt_buffer );
979 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
980 if (status) SetLastError( RtlNtStatusToDosError(status) );
981 else
982 {
983 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
984 RtlFreeAnsiString( &unix_name );
985 }
986 }
987
988 if (ret)
989 {
990 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
991 for (p = target; *p; p++) if (*p == '/') *p = '\\';
992 }
993
994 return ret;
995 }
996 else /* return a list of all devices */
997 {
998 WCHAR *p = target;
999 int i;
1000
1001 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1002 {
1003 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1004 return 0;
1005 }
1006
1007 memcpy( p, auxW, sizeof(auxW) );
1008 p += sizeof(auxW) / sizeof(WCHAR);
1009 memcpy( p, nulW, sizeof(nulW) );
1010 p += sizeof(nulW) / sizeof(WCHAR);
1011 memcpy( p, prnW, sizeof(prnW) );
1012 p += sizeof(prnW) / sizeof(WCHAR);
1013
1014 strcpyW( nt_buffer, com0W );
1015 RtlInitUnicodeString( &nt_name, nt_buffer );
1016
1017 for (i = 1; i <= 9; i++)
1018 {
1019 nt_buffer[7] = '0' + i;
1020 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1021 {
1022 RtlFreeAnsiString( &unix_name );
1023 if (p + 5 >= target + bufsize)
1024 {
1025 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1026 return 0;
1027 }
1028 strcpyW( p, comW );
1029 p[3] = '0' + i;
1030 p[4] = 0;
1031 p += 5;
1032 }
1033 }
1034 strcpyW( nt_buffer + 4, lptW );
1035 for (i = 1; i <= 9; i++)
1036 {
1037 nt_buffer[7] = '0' + i;
1038 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1039 {
1040 RtlFreeAnsiString( &unix_name );
1041 if (p + 5 >= target + bufsize)
1042 {
1043 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1044 return 0;
1045 }
1046 strcpyW( p, lptW );
1047 p[3] = '0' + i;
1048 p[4] = 0;
1049 p += 5;
1050 }
1051 }
1052
1053 strcpyW( nt_buffer + 4, rootW );
1054 RtlInitUnicodeString( &nt_name, nt_buffer );
1055
1056 for (i = 0; i < 26; i++)
1057 {
1058 nt_buffer[4] = 'a' + i;
1059 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1060 {
1061 RtlFreeAnsiString( &unix_name );
1062 if (p + 3 >= target + bufsize)
1063 {
1064 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1065 return 0;
1066 }
1067 *p++ = 'A' + i;
1068 *p++ = ':';
1069 *p++ = 0;
1070 }
1071 }
1072 *p++ = 0; /* terminating null */
1073 return p - target;
1074 }
1075 }
1076
1077
1078 /***********************************************************************
1079 * QueryDosDeviceA (KERNEL32.@)
1080 *
1081 * returns array of strings terminated by \0, terminated by \0
1082 */
1083 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1084 {
1085 DWORD ret = 0, retW;
1086 WCHAR *devnameW = NULL;
1087 LPWSTR targetW;
1088
1089 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1090
1091 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1092 if (!targetW)
1093 {
1094 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1095 return 0;
1096 }
1097
1098 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1099
1100 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1101
1102 HeapFree(GetProcessHeap(), 0, targetW);
1103 return ret;
1104 }
1105
1106
1107 /***********************************************************************
1108 * GetLogicalDrives (KERNEL32.@)
1109 */
1110 DWORD WINAPI GetLogicalDrives(void)
1111 {
1112 const char *config_dir = wine_get_config_dir();
1113 struct stat st;
1114 char *buffer, *dev;
1115 DWORD ret = 0;
1116 int i;
1117
1118 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1119 {
1120 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1121 return 0;
1122 }
1123 strcpy( buffer, config_dir );
1124 strcat( buffer, "/dosdevices/a:" );
1125 dev = buffer + strlen(buffer) - 2;
1126
1127 for (i = 0; i < 26; i++)
1128 {
1129 *dev = 'a' + i;
1130 if (!stat( buffer, &st )) ret |= (1 << i);
1131 }
1132 HeapFree( GetProcessHeap(), 0, buffer );
1133 return ret;
1134 }
1135
1136
1137 /***********************************************************************
1138 * GetLogicalDriveStringsA (KERNEL32.@)
1139 */
1140 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1141 {
1142 DWORD drives = GetLogicalDrives();
1143 UINT drive, count;
1144
1145 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1146 if ((count * 4) + 1 > len) return count * 4 + 1;
1147
1148 for (drive = 0; drive < 26; drive++)
1149 {
1150 if (drives & (1 << drive))
1151 {
1152 *buffer++ = 'a' + drive;
1153 *buffer++ = ':';
1154 *buffer++ = '\\';
1155 *buffer++ = 0;
1156 }
1157 }
1158 *buffer = 0;
1159 return count * 4;
1160 }
1161
1162
1163 /***********************************************************************
1164 * GetLogicalDriveStringsW (KERNEL32.@)
1165 */
1166 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1167 {
1168 DWORD drives = GetLogicalDrives();
1169 UINT drive, count;
1170
1171 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1172 if ((count * 4) + 1 > len) return count * 4 + 1;
1173
1174 for (drive = 0; drive < 26; drive++)
1175 {
1176 if (drives & (1 << drive))
1177 {
1178 *buffer++ = 'a' + drive;
1179 *buffer++ = ':';
1180 *buffer++ = '\\';
1181 *buffer++ = 0;
1182 }
1183 }
1184 *buffer = 0;
1185 return count * 4;
1186 }
1187
1188
1189 /***********************************************************************
1190 * GetDriveTypeW (KERNEL32.@)
1191 *
1192 * Returns the type of the disk drive specified. If root is NULL the
1193 * root of the current directory is used.
1194 *
1195 * RETURNS
1196 *
1197 * Type of drive (from Win32 SDK):
1198 *
1199 * DRIVE_UNKNOWN unable to find out anything about the drive
1200 * DRIVE_NO_ROOT_DIR nonexistent root dir
1201 * DRIVE_REMOVABLE the disk can be removed from the machine
1202 * DRIVE_FIXED the disk cannot be removed from the machine
1203 * DRIVE_REMOTE network disk
1204 * DRIVE_CDROM CDROM drive
1205 * DRIVE_RAMDISK virtual disk in RAM
1206 */
1207 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1208 {
1209 FILE_FS_DEVICE_INFORMATION info;
1210 IO_STATUS_BLOCK io;
1211 NTSTATUS status;
1212 HANDLE handle;
1213 UINT ret;
1214
1215 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1216
1217 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1218 NtClose( handle );
1219 if (status != STATUS_SUCCESS)
1220 {
1221 SetLastError( RtlNtStatusToDosError(status) );
1222 ret = DRIVE_UNKNOWN;
1223 }
1224 else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1225 {
1226 switch (info.DeviceType)
1227 {
1228 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1229 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1230 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1231 case FILE_DEVICE_DISK_FILE_SYSTEM:
1232 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1233 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1234 else ret = DRIVE_FIXED;
1235 break;
1236 default:
1237 ret = DRIVE_UNKNOWN;
1238 break;
1239 }
1240 }
1241 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1242 return ret;
1243 }
1244
1245
1246 /***********************************************************************
1247 * GetDriveTypeA (KERNEL32.@)
1248 *
1249 * See GetDriveTypeW.
1250 */
1251 UINT WINAPI GetDriveTypeA( LPCSTR root )
1252 {
1253 WCHAR *rootW = NULL;
1254
1255 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1256 return GetDriveTypeW( rootW );
1257 }
1258
1259
1260 /***********************************************************************
1261 * GetDiskFreeSpaceExW (KERNEL32.@)
1262 *
1263 * This function is used to acquire the size of the available and
1264 * total space on a logical volume.
1265 *
1266 * RETURNS
1267 *
1268 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1269 * detailed error information.
1270 *
1271 */
1272 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1273 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1274 {
1275 FILE_FS_SIZE_INFORMATION info;
1276 IO_STATUS_BLOCK io;
1277 NTSTATUS status;
1278 HANDLE handle;
1279 UINT units;
1280
1281 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1282
1283 if (!open_device_root( root, &handle )) return FALSE;
1284
1285 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1286 NtClose( handle );
1287 if (status != STATUS_SUCCESS)
1288 {
1289 SetLastError( RtlNtStatusToDosError(status) );
1290 return FALSE;
1291 }
1292
1293 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1294 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1295 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1296 /* FIXME: this one should take quotas into account */
1297 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1298 return TRUE;
1299 }
1300
1301
1302 /***********************************************************************
1303 * GetDiskFreeSpaceExA (KERNEL32.@)
1304 *
1305 * See GetDiskFreeSpaceExW.
1306 */
1307 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1308 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1309 {
1310 WCHAR *rootW = NULL;
1311
1312 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1313 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1314 }
1315
1316
1317 /***********************************************************************
1318 * GetDiskFreeSpaceW (KERNEL32.@)
1319 */
1320 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1321 LPDWORD sector_bytes, LPDWORD free_clusters,
1322 LPDWORD total_clusters )
1323 {
1324 FILE_FS_SIZE_INFORMATION info;
1325 IO_STATUS_BLOCK io;
1326 NTSTATUS status;
1327 HANDLE handle;
1328 UINT units;
1329
1330 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1331 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1332
1333 if (!open_device_root( root, &handle )) return FALSE;
1334
1335 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1336 NtClose( handle );
1337 if (status != STATUS_SUCCESS)
1338 {
1339 SetLastError( RtlNtStatusToDosError(status) );
1340 return FALSE;
1341 }
1342
1343 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1344
1345 if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
1346 /* cap the size and available at 2GB as per specs */
1347 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1348 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1349 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1350 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1351 }
1352 /* nr. of clusters is always <= 65335 */
1353 while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1354 info.TotalAllocationUnits.QuadPart /= 2;
1355 info.AvailableAllocationUnits.QuadPart /= 2;
1356 info.SectorsPerAllocationUnit *= 2;
1357 }
1358 }
1359
1360 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1361 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1362 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1363 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1364 return TRUE;
1365 }
1366
1367
1368 /***********************************************************************
1369 * GetDiskFreeSpaceA (KERNEL32.@)
1370 */
1371 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1372 LPDWORD sector_bytes, LPDWORD free_clusters,
1373 LPDWORD total_clusters )
1374 {
1375 WCHAR *rootW = NULL;
1376
1377 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1378 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1379 }
1380
1381 /***********************************************************************
1382 * GetVolumePathNameA (KERNEL32.@)
1383 */
1384 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1385 {
1386 FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1387 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1388 return FALSE;
1389 }
1390
1391 /***********************************************************************
1392 * GetVolumePathNameW (KERNEL32.@)
1393 */
1394 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1395 {
1396 FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1397 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1398 return FALSE;
1399 }
1400
1401 /***********************************************************************
1402 * FindFirstVolumeA (KERNEL32.@)
1403 */
1404 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1405 {
1406 FIXME("(%p, %d), stub!\n", volume, len);
1407 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1408 return INVALID_HANDLE_VALUE;
1409 }
1410
1411 /***********************************************************************
1412 * FindFirstVolumeW (KERNEL32.@)
1413 */
1414 HANDLE WINAPI FindFirstVolumeW(LPWSTR volume, DWORD len)
1415 {
1416 FIXME("(%p, %d), stub!\n", volume, len);
1417 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1418 return INVALID_HANDLE_VALUE;
1419 }
1420
1421 /***********************************************************************
1422 * FindFirstVolumeMountPointA (KERNEL32.@)
1423 */
1424 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1425 {
1426 FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1427 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1428 return INVALID_HANDLE_VALUE;
1429 }
1430
1431 /***********************************************************************
1432 * FindFirstVolumeMountPointW (KERNEL32.@)
1433 */
1434 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1435 {
1436 FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1437 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1438 return INVALID_HANDLE_VALUE;
1439 }
1440
1441 /***********************************************************************
1442 * FindVolumeClose (KERNEL32.@)
1443 */
1444 BOOL WINAPI FindVolumeClose(HANDLE handle)
1445 {
1446 FIXME("(%p), stub!\n", handle);
1447 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1448 return FALSE;
1449 }
1450
1451 /***********************************************************************
1452 * FindVolumeMountPointClose (KERNEL32.@)
1453 */
1454 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1455 {
1456 FIXME("(%p), stub!\n", h);
1457 return FALSE;
1458 }
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