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Remove the remaining casts of NULL.
[wine/multimedia.git] / dlls / kernel32 / volume.c
blob7dc046f6efc357f259c71530a5168394064f8e62
1 /*
2 * Volume management functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 1996, 2004 Alexandre Julliard
6 * Copyright 1999 Petr Tomasek
7 * Copyright 2000 Andreas Mohr
8 * Copyright 2003 Eric Pouech
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "winnls.h"
37 #include "winternl.h"
38 #include "winioctl.h"
39 #include "ntddcdrm.h"
40 #include "ddk/mountmgr.h"
41 #include "kernel_private.h"
42 #include "wine/library.h"
43 #include "wine/unicode.h"
44 #include "wine/debug.h"
45
46 WINE_DEFAULT_DEBUG_CHANNEL(volume);
47
48 #define SUPERBLOCK_SIZE 2048
49 #define SYMBOLIC_LINK_QUERY 0x0001
50
51 #define CDFRAMES_PERSEC 75
52 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
53 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
54 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
55
56 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
57 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
58
59 enum fs_type
60 {
61 FS_ERROR, /* error accessing the device */
62 FS_UNKNOWN, /* unknown file system */
63 FS_FAT1216,
64 FS_FAT32,
65 FS_ISO9660
66 };
67
68 static const WCHAR drive_types[][8] =
69 {
70 { 0 }, /* DRIVE_UNKNOWN */
71 { 0 }, /* DRIVE_NO_ROOT_DIR */
72 {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
73 {'h','d',0}, /* DRIVE_FIXED */
74 {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
75 {'c','d','r','o','m',0}, /* DRIVE_CDROM */
76 {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
77 };
78
79 /* read a Unix symlink; returned buffer must be freed by caller */
80 static char *read_symlink( const char *path )
81 {
82 char *buffer;
83 int ret, size = 128;
84
85 for (;;)
86 {
87 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
88 {
89 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
90 return 0;
91 }
92 ret = readlink( path, buffer, size );
93 if (ret == -1)
94 {
95 FILE_SetDosError();
96 HeapFree( GetProcessHeap(), 0, buffer );
97 return 0;
98 }
99 if (ret != size)
100 {
101 buffer[ret] = 0;
102 return buffer;
103 }
104 HeapFree( GetProcessHeap(), 0, buffer );
105 size *= 2;
106 }
107 }
108
109 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
110 static char *get_dos_device_path( LPCWSTR name )
111 {
112 const char *config_dir = wine_get_config_dir();
113 char *buffer, *dev;
114 int i;
115
116 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
117 strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
118 {
119 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
120 return NULL;
121 }
122 strcpy( buffer, config_dir );
123 strcat( buffer, "/dosdevices/" );
124 dev = buffer + strlen(buffer);
125 /* no codepage conversion, DOS device names are ASCII anyway */
126 for (i = 0; i < 5; i++)
127 if (!(dev[i] = (char)tolowerW(name[i]))) break;
128 dev[5] = 0;
129 return buffer;
130 }
131
132 /* read the contents of an NT symlink object */
133 static NTSTATUS read_nt_symlink( const WCHAR *name, WCHAR *target, DWORD size )
134 {
135 NTSTATUS status;
136 OBJECT_ATTRIBUTES attr;
137 UNICODE_STRING nameW;
138 HANDLE handle;
139
140 attr.Length = sizeof(attr);
141 attr.RootDirectory = 0;
142 attr.Attributes = OBJ_CASE_INSENSITIVE;
143 attr.ObjectName = &nameW;
144 attr.SecurityDescriptor = NULL;
145 attr.SecurityQualityOfService = NULL;
146 RtlInitUnicodeString( &nameW, name );
147
148 if (!(status = NtOpenSymbolicLinkObject( &handle, SYMBOLIC_LINK_QUERY, &attr )))
149 {
150 UNICODE_STRING targetW;
151 targetW.Buffer = target;
152 targetW.MaximumLength = (size - 1) * sizeof(WCHAR);
153 status = NtQuerySymbolicLinkObject( handle, &targetW, NULL );
154 if (!status) target[targetW.Length / sizeof(WCHAR)] = 0;
155 NtClose( handle );
156 }
157 return status;
158 }
159
160 /* open a handle to a device root */
161 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
162 {
163 static const WCHAR default_rootW[] = {'\\',0};
164 UNICODE_STRING nt_name;
165 OBJECT_ATTRIBUTES attr;
166 IO_STATUS_BLOCK io;
167 NTSTATUS status;
168
169 if (!root) root = default_rootW;
170 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
171 {
172 SetLastError( ERROR_PATH_NOT_FOUND );
173 return FALSE;
174 }
175 attr.Length = sizeof(attr);
176 attr.RootDirectory = 0;
177 attr.Attributes = OBJ_CASE_INSENSITIVE;
178 attr.ObjectName = &nt_name;
179 attr.SecurityDescriptor = NULL;
180 attr.SecurityQualityOfService = NULL;
181
182 status = NtOpenFile( handle, 0, &attr, &io, 0,
183 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
184 RtlFreeUnicodeString( &nt_name );
185 if (status != STATUS_SUCCESS)
186 {
187 SetLastError( RtlNtStatusToDosError(status) );
188 return FALSE;
189 }
190 return TRUE;
191 }
192
193 /* get the label by reading it from a file at the root of the filesystem */
194 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
195 {
196 HANDLE handle;
197 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
198
199 labelW[0] = device[4];
200 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
201 OPEN_EXISTING, 0, 0 );
202 if (handle != INVALID_HANDLE_VALUE)
203 {
204 char buffer[256], *p;
205 DWORD size;
206
207 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
208 CloseHandle( handle );
209 p = buffer + size;
210 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
211 *p = 0;
212 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
213 label[len-1] = 0;
214 }
215 else label[0] = 0;
216 }
217
218 /* get the serial number by reading it from a file at the root of the filesystem */
219 static DWORD get_filesystem_serial( const WCHAR *device )
220 {
221 HANDLE handle;
222 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
223
224 serialW[0] = device[4];
225 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
226 OPEN_EXISTING, 0, 0 );
227 if (handle != INVALID_HANDLE_VALUE)
228 {
229 char buffer[32];
230 DWORD size;
231
232 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
233 CloseHandle( handle );
234 buffer[size] = 0;
235 return strtoul( buffer, NULL, 16 );
236 }
237 else return 0;
238 }
239
240 /* fetch the type of a drive from the registry */
241 static UINT get_registry_drive_type( const WCHAR *root )
242 {
243 static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
244 'S','o','f','t','w','a','r','e','\\',
245 'W','i','n','e','\\',
246 'D','r','i','v','e','s',0 };
247 OBJECT_ATTRIBUTES attr;
248 UNICODE_STRING nameW;
249 HANDLE hkey;
250 DWORD dummy;
251 UINT ret = DRIVE_UNKNOWN;
252 char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
253 WCHAR driveW[] = {'A',':',0};
254
255 attr.Length = sizeof(attr);
256 attr.RootDirectory = 0;
257 attr.ObjectName = &nameW;
258 attr.Attributes = 0;
259 attr.SecurityDescriptor = NULL;
260 attr.SecurityQualityOfService = NULL;
261 RtlInitUnicodeString( &nameW, drive_types_keyW );
262 /* @@ Wine registry key: HKLM\Software\Wine\Drives */
263 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
264
265 if (root) driveW[0] = root[0];
266 else
267 {
268 WCHAR path[MAX_PATH];
269 GetCurrentDirectoryW( MAX_PATH, path );
270 driveW[0] = path[0];
271 }
272
273 RtlInitUnicodeString( &nameW, driveW );
274 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
275 {
276 unsigned int i;
277 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
278
279 for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
280 {
281 if (!strcmpiW( data, drive_types[i] ))
282 {
283 ret = i;
284 break;
285 }
286 }
287 }
288 NtClose( hkey );
289 return ret;
290 }
291
292
293 /******************************************************************
294 * VOLUME_FindCdRomDataBestVoldesc
295 */
296 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
297 {
298 BYTE cur_vd_type, max_vd_type = 0;
299 BYTE buffer[0x800];
300 DWORD size, offs, best_offs = 0, extra_offs = 0;
301
302 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
303 {
304 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
305 * the volume label is displaced forward by 8
306 */
307 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
308 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
309 if (size != sizeof(buffer)) break;
310 /* check for non-ISO9660 signature */
311 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
312 cur_vd_type = buffer[extra_offs];
313 if (cur_vd_type == 0xff) /* voldesc set terminator */
314 break;
315 if (cur_vd_type > max_vd_type)
316 {
317 max_vd_type = cur_vd_type;
318 best_offs = offs + extra_offs;
319 }
320 }
321 return best_offs;
322 }
323
324
325 /***********************************************************************
326 * VOLUME_ReadFATSuperblock
327 */
328 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
329 {
330 DWORD size;
331
332 /* try a fixed disk, with a FAT partition */
333 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
334 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
335 {
336 if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN; /* not a real device */
337 return FS_ERROR;
338 }
339
340 if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
341
342 /* FIXME: do really all FAT have their name beginning with
343 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
344 */
345 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
346 {
347 /* guess which type of FAT we have */
348 int reasonable;
349 unsigned int sectors,
350 sect_per_fat,
351 total_sectors,
352 num_boot_sectors,
353 num_fats,
354 num_root_dir_ents,
355 bytes_per_sector,
356 sectors_per_cluster,
357 nclust;
358 sect_per_fat = GETWORD(buff, 0x16);
359 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
360 total_sectors = GETWORD(buff, 0x13);
361 if (!total_sectors)
362 total_sectors = GETLONG(buff, 0x20);
363 num_boot_sectors = GETWORD(buff, 0x0e);
364 num_fats = buff[0x10];
365 num_root_dir_ents = GETWORD(buff, 0x11);
366 bytes_per_sector = GETWORD(buff, 0x0b);
367 sectors_per_cluster = buff[0x0d];
368 /* check if the parameters are reasonable and will not cause
369 * arithmetic errors in the calculation */
370 reasonable = num_boot_sectors < total_sectors &&
371 num_fats < 16 &&
372 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
373 sectors_per_cluster > 1;
374 if (!reasonable) return FS_UNKNOWN;
375 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
376 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
377 nclust = sectors / sectors_per_cluster;
378 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
379 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
380 if (nclust < 65525)
381 {
382 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
383 !memcmp(buff+0x36, "FAT", 3))
384 return FS_FAT1216;
385 }
386 }
387 return FS_UNKNOWN;
388 }
389
390
391 /***********************************************************************
392 * VOLUME_ReadCDSuperblock
393 */
394 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
395 {
396 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
397
398 if (!offs) return FS_UNKNOWN;
399
400 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
401 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
402 size != SUPERBLOCK_SIZE)
403 return FS_ERROR;
404
405 /* check for iso9660 present */
406 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
407 return FS_UNKNOWN;
408 }
409
410
411 /**************************************************************************
412 * VOLUME_GetSuperblockLabel
413 */
414 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
415 WCHAR *label, DWORD len )
416 {
417 const BYTE *label_ptr = NULL;
418 DWORD label_len;
419
420 switch(type)
421 {
422 case FS_ERROR:
423 label_len = 0;
424 break;
425 case FS_UNKNOWN:
426 get_filesystem_label( device, label, len );
427 return;
428 case FS_FAT1216:
429 label_ptr = superblock + 0x2b;
430 label_len = 11;
431 break;
432 case FS_FAT32:
433 label_ptr = superblock + 0x47;
434 label_len = 11;
435 break;
436 case FS_ISO9660:
437 {
438 BYTE ver = superblock[0x5a];
439
440 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
441 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
442 { /* yippee, unicode */
443 unsigned int i;
444
445 if (len > 17) len = 17;
446 for (i = 0; i < len-1; i++)
447 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
448 label[i] = 0;
449 while (i && label[i-1] == ' ') label[--i] = 0;
450 return;
451 }
452 label_ptr = superblock + 40;
453 label_len = 32;
454 break;
455 }
456 }
457 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
458 &label_len, (LPCSTR)label_ptr, label_len );
459 label_len /= sizeof(WCHAR);
460 label[label_len] = 0;
461 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
462 }
463
464
465 /**************************************************************************
466 * VOLUME_GetSuperblockSerial
467 */
468 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
469 {
470 switch(type)
471 {
472 case FS_ERROR:
473 break;
474 case FS_UNKNOWN:
475 return get_filesystem_serial( device );
476 case FS_FAT1216:
477 return GETLONG( superblock, 0x27 );
478 case FS_FAT32:
479 return GETLONG( superblock, 0x33 );
480 case FS_ISO9660:
481 {
482 BYTE sum[4];
483 int i;
484
485 sum[0] = sum[1] = sum[2] = sum[3] = 0;
486 for (i = 0; i < 2048; i += 4)
487 {
488 /* DON'T optimize this into DWORD !! (breaks overflow) */
489 sum[0] += superblock[i+0];
490 sum[1] += superblock[i+1];
491 sum[2] += superblock[i+2];
492 sum[3] += superblock[i+3];
493 }
494 /*
495 * OK, another braindead one... argh. Just believe it.
496 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
497 * It's true and nobody will ever be able to change it.
498 */
499 if (GetVersion() & 0x80000000)
500 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
501 else
502 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
503 }
504 }
505 return 0;
506 }
507
508
509 /**************************************************************************
510 * VOLUME_GetAudioCDSerial
511 */
512 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
513 {
514 DWORD serial = 0;
515 int i;
516
517 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
518 serial += ((toc->TrackData[i].Address[1] << 16) |
519 (toc->TrackData[i].Address[2] << 8) |
520 toc->TrackData[i].Address[3]);
521
522 /*
523 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
524 * frames.
525 * There it is collected for correcting the serial when there are less than
526 * 3 tracks.
527 */
528 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
529 {
530 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
531 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
532 serial += dwEnd - dwStart;
533 }
534 return serial;
535 }
536
537
538 /***********************************************************************
539 * GetVolumeInformationW (KERNEL32.@)
540 */
541 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
542 DWORD *serial, DWORD *filename_len, DWORD *flags,
543 LPWSTR fsname, DWORD fsname_len )
544 {
545 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
546 static const WCHAR fatW[] = {'F','A','T',0};
547 static const WCHAR fat32W[] = {'F','A','T','3','2',0};
548 static const WCHAR ntfsW[] = {'N','T','F','S',0};
549 static const WCHAR cdfsW[] = {'C','D','F','S',0};
550
551 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
552 HANDLE handle;
553 enum fs_type type = FS_UNKNOWN;
554
555 if (!root)
556 {
557 WCHAR path[MAX_PATH];
558 GetCurrentDirectoryW( MAX_PATH, path );
559 device[4] = path[0];
560 }
561 else
562 {
563 if (!root[0] || root[1] != ':')
564 {
565 SetLastError( ERROR_INVALID_NAME );
566 return FALSE;
567 }
568 device[4] = root[0];
569 }
570
571 /* try to open the device */
572
573 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
574 NULL, OPEN_EXISTING, 0, 0 );
575 if (handle != INVALID_HANDLE_VALUE)
576 {
577 BYTE superblock[SUPERBLOCK_SIZE];
578 CDROM_TOC toc;
579 DWORD br;
580
581 /* check for audio CD */
582 /* FIXME: we only check the first track for now */
583 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
584 {
585 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
586 {
587 TRACE( "%s: found audio CD\n", debugstr_w(device) );
588 if (label) lstrcpynW( label, audiocdW, label_len );
589 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
590 CloseHandle( handle );
591 type = FS_ISO9660;
592 goto fill_fs_info;
593 }
594 type = VOLUME_ReadCDSuperblock( handle, superblock );
595 }
596 else
597 {
598 type = VOLUME_ReadFATSuperblock( handle, superblock );
599 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
600 }
601 CloseHandle( handle );
602 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
603 if (type == FS_ERROR) return FALSE;
604
605 if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
606 if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
607 goto fill_fs_info;
608 }
609 else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
610
611 /* we couldn't open the device, fallback to default strategy */
612
613 switch(GetDriveTypeW( root ))
614 {
615 case DRIVE_UNKNOWN:
616 case DRIVE_NO_ROOT_DIR:
617 SetLastError( ERROR_NOT_READY );
618 return FALSE;
619 case DRIVE_REMOVABLE:
620 case DRIVE_FIXED:
621 case DRIVE_REMOTE:
622 case DRIVE_RAMDISK:
623 type = FS_UNKNOWN;
624 break;
625 case DRIVE_CDROM:
626 type = FS_ISO9660;
627 break;
628 }
629
630 if (label && label_len) get_filesystem_label( device, label, label_len );
631 if (serial) *serial = get_filesystem_serial( device );
632
633 fill_fs_info: /* now fill in the information that depends on the file system type */
634
635 switch(type)
636 {
637 case FS_ISO9660:
638 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
639 if (filename_len) *filename_len = 221;
640 if (flags) *flags = FILE_READ_ONLY_VOLUME;
641 break;
642 case FS_FAT1216:
643 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
644 case FS_FAT32:
645 if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
646 if (filename_len) *filename_len = 255;
647 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
648 break;
649 default:
650 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
651 if (filename_len) *filename_len = 255;
652 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
653 break;
654 }
655 return TRUE;
656 }
657
658
659 /***********************************************************************
660 * GetVolumeInformationA (KERNEL32.@)
661 */
662 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
663 DWORD label_len, DWORD *serial,
664 DWORD *filename_len, DWORD *flags,
665 LPSTR fsname, DWORD fsname_len )
666 {
667 WCHAR *rootW = NULL;
668 LPWSTR labelW, fsnameW;
669 BOOL ret;
670
671 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
672
673 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
674 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
675
676 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
677 filename_len, flags, fsnameW, fsname_len)))
678 {
679 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
680 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
681 }
682
683 HeapFree( GetProcessHeap(), 0, labelW );
684 HeapFree( GetProcessHeap(), 0, fsnameW );
685 return ret;
686 }
687
688
689
690 /***********************************************************************
691 * SetVolumeLabelW (KERNEL32.@)
692 */
693 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
694 {
695 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
696 HANDLE handle;
697 enum fs_type type = FS_UNKNOWN;
698
699 if (!root)
700 {
701 WCHAR path[MAX_PATH];
702 GetCurrentDirectoryW( MAX_PATH, path );
703 device[4] = path[0];
704 }
705 else
706 {
707 if (!root[0] || root[1] != ':')
708 {
709 SetLastError( ERROR_INVALID_NAME );
710 return FALSE;
711 }
712 device[4] = root[0];
713 }
714
715 /* try to open the device */
716
717 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
718 NULL, OPEN_EXISTING, 0, 0 );
719 if (handle != INVALID_HANDLE_VALUE)
720 {
721 BYTE superblock[SUPERBLOCK_SIZE];
722
723 type = VOLUME_ReadFATSuperblock( handle, superblock );
724 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
725 CloseHandle( handle );
726 if (type != FS_UNKNOWN)
727 {
728 /* we can't set the label on FAT or CDROM file systems */
729 TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
730 SetLastError( ERROR_ACCESS_DENIED );
731 return FALSE;
732 }
733 }
734 else
735 {
736 TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
737 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
738 }
739
740 /* we couldn't open the device, fallback to default strategy */
741
742 switch(GetDriveTypeW( root ))
743 {
744 case DRIVE_UNKNOWN:
745 case DRIVE_NO_ROOT_DIR:
746 SetLastError( ERROR_NOT_READY );
747 break;
748 case DRIVE_REMOVABLE:
749 case DRIVE_FIXED:
750 {
751 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
752
753 labelW[0] = device[4];
754
755 if (!label[0]) /* delete label file when setting an empty label */
756 return DeleteFileW( labelW ) || GetLastError() == ERROR_FILE_NOT_FOUND;
757
758 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
759 CREATE_ALWAYS, 0, 0 );
760 if (handle != INVALID_HANDLE_VALUE)
761 {
762 char buffer[64];
763 DWORD size;
764
765 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer)-1, NULL, NULL ))
766 buffer[sizeof(buffer)-2] = 0;
767 strcat( buffer, "\n" );
768 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
769 CloseHandle( handle );
770 return TRUE;
771 }
772 break;
773 }
774 case DRIVE_REMOTE:
775 case DRIVE_RAMDISK:
776 case DRIVE_CDROM:
777 SetLastError( ERROR_ACCESS_DENIED );
778 break;
779 }
780 return FALSE;
781 }
782
783 /***********************************************************************
784 * SetVolumeLabelA (KERNEL32.@)
785 */
786 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
787 {
788 WCHAR *rootW = NULL, *volnameW = NULL;
789 BOOL ret;
790
791 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
792 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
793 ret = SetVolumeLabelW( rootW, volnameW );
794 HeapFree( GetProcessHeap(), 0, volnameW );
795 return ret;
796 }
797
798
799 /***********************************************************************
800 * GetVolumeNameForVolumeMountPointA (KERNEL32.@)
801 */
802 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
803 {
804 BOOL ret;
805 WCHAR volumeW[50], *pathW = NULL;
806 DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
807
808 TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
809
810 if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
811 return FALSE;
812
813 if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
814 FILE_name_WtoA( volumeW, -1, volume, len );
815
816 HeapFree( GetProcessHeap(), 0, pathW );
817 return ret;
818 }
819
820 /***********************************************************************
821 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
822 */
823 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
824 {
825 BOOL ret = FALSE;
826 static const WCHAR fmt[] =
827 { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
828
829 TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
830
831 if (!path || !path[0]) return FALSE;
832
833 if (size >= sizeof(fmt) / sizeof(WCHAR))
834 {
835 /* FIXME: will break when we support volume mounts */
836 sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
837 ret = TRUE;
838 }
839 return ret;
840 }
841
842 /***********************************************************************
843 * DefineDosDeviceW (KERNEL32.@)
844 */
845 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
846 {
847 DWORD len, dosdev;
848 BOOL ret = FALSE;
849 char *path = NULL, *target, *p;
850
851 TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
852
853 if (!(flags & DDD_REMOVE_DEFINITION))
854 {
855 if (!(flags & DDD_RAW_TARGET_PATH))
856 {
857 FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
858 flags, debugstr_w(devname), debugstr_w(targetpath) );
859 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
860 return FALSE;
861 }
862
863 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
864 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
865 {
866 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
867 for (p = target; *p; p++) if (*p == '\\') *p = '/';
868 }
869 else
870 {
871 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
872 return FALSE;
873 }
874 }
875 else target = NULL;
876
877 /* first check for a DOS device */
878
879 if ((dosdev = RtlIsDosDeviceName_U( devname )))
880 {
881 WCHAR name[5];
882
883 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
884 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
885 path = get_dos_device_path( name );
886 }
887 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
888 {
889 path = get_dos_device_path( devname );
890 }
891 else SetLastError( ERROR_FILE_NOT_FOUND );
892
893 if (path)
894 {
895 if (target)
896 {
897 TRACE( "creating symlink %s -> %s\n", path, target );
898 unlink( path );
899 if (!symlink( target, path )) ret = TRUE;
900 else FILE_SetDosError();
901 }
902 else
903 {
904 TRACE( "removing symlink %s\n", path );
905 if (!unlink( path )) ret = TRUE;
906 else FILE_SetDosError();
907 }
908 HeapFree( GetProcessHeap(), 0, path );
909 }
910 HeapFree( GetProcessHeap(), 0, target );
911 return ret;
912 }
913
914
915 /***********************************************************************
916 * DefineDosDeviceA (KERNEL32.@)
917 */
918 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
919 {
920 WCHAR *devW, *targetW = NULL;
921 BOOL ret;
922
923 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
924 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
925 ret = DefineDosDeviceW(flags, devW, targetW);
926 HeapFree( GetProcessHeap(), 0, targetW );
927 return ret;
928 }
929
930
931 /***********************************************************************
932 * QueryDosDeviceW (KERNEL32.@)
933 *
934 * returns array of strings terminated by \0, terminated by \0
935 */
936 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
937 {
938 static const WCHAR auxW[] = {'A','U','X',0};
939 static const WCHAR nulW[] = {'N','U','L',0};
940 static const WCHAR prnW[] = {'P','R','N',0};
941 static const WCHAR comW[] = {'C','O','M',0};
942 static const WCHAR lptW[] = {'L','P','T',0};
943 static const WCHAR rootW[] = {'A',':','\\',0};
944 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
945 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
946 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
947 static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','A',':',0};
948
949 UNICODE_STRING nt_name;
950 ANSI_STRING unix_name;
951 WCHAR nt_buffer[10];
952 NTSTATUS status;
953
954 if (!bufsize)
955 {
956 SetLastError( ERROR_INSUFFICIENT_BUFFER );
957 return 0;
958 }
959
960 if (devname)
961 {
962 WCHAR *p, name[5];
963 char *path, *link;
964 DWORD dosdev, ret = 0;
965
966 if ((dosdev = RtlIsDosDeviceName_U( devname )))
967 {
968 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
969 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
970 }
971 else if (devname[0] && devname[1] == ':' && !devname[2])
972 {
973 /* FIXME: should do this for all devices, not just drives */
974 NTSTATUS status;
975 WCHAR buffer[sizeof(driveW)/sizeof(WCHAR)];
976
977 memcpy( buffer, driveW, sizeof(driveW) );
978 buffer[12] = devname[0];
979 if ((status = read_nt_symlink( buffer, target, bufsize )))
980 {
981 SetLastError( RtlNtStatusToDosError(status) );
982 return 0;
983 }
984 ret = strlenW( target ) + 1;
985 goto done;
986 }
987 else
988 {
989 SetLastError( ERROR_BAD_PATHNAME );
990 return 0;
991 }
992
993 if (!(path = get_dos_device_path( name ))) return 0;
994 link = read_symlink( path );
995 HeapFree( GetProcessHeap(), 0, path );
996
997 if (link)
998 {
999 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
1000 HeapFree( GetProcessHeap(), 0, link );
1001 }
1002 else if (dosdev) /* look for device defaults */
1003 {
1004 if (!strcmpiW( name, auxW ))
1005 {
1006 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
1007 {
1008 memcpy( target, com1W, sizeof(com1W) );
1009 ret = sizeof(com1W)/sizeof(WCHAR);
1010 }
1011 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1012 return ret;
1013 }
1014 if (!strcmpiW( name, prnW ))
1015 {
1016 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
1017 {
1018 memcpy( target, lpt1W, sizeof(lpt1W) );
1019 ret = sizeof(lpt1W)/sizeof(WCHAR);
1020 }
1021 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1022 return ret;
1023 }
1024
1025 nt_buffer[0] = '\\';
1026 nt_buffer[1] = '?';
1027 nt_buffer[2] = '?';
1028 nt_buffer[3] = '\\';
1029 strcpyW( nt_buffer + 4, name );
1030 RtlInitUnicodeString( &nt_name, nt_buffer );
1031 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
1032 if (status) SetLastError( RtlNtStatusToDosError(status) );
1033 else
1034 {
1035 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
1036 RtlFreeAnsiString( &unix_name );
1037 }
1038 }
1039 done:
1040 if (ret)
1041 {
1042 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
1043 for (p = target; *p; p++) if (*p == '/') *p = '\\';
1044 }
1045
1046 return ret;
1047 }
1048 else /* return a list of all devices */
1049 {
1050 WCHAR *p = target;
1051 int i;
1052
1053 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1054 {
1055 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1056 return 0;
1057 }
1058
1059 memcpy( p, auxW, sizeof(auxW) );
1060 p += sizeof(auxW) / sizeof(WCHAR);
1061 memcpy( p, nulW, sizeof(nulW) );
1062 p += sizeof(nulW) / sizeof(WCHAR);
1063 memcpy( p, prnW, sizeof(prnW) );
1064 p += sizeof(prnW) / sizeof(WCHAR);
1065
1066 strcpyW( nt_buffer, com0W );
1067 RtlInitUnicodeString( &nt_name, nt_buffer );
1068
1069 for (i = 1; i <= 9; i++)
1070 {
1071 nt_buffer[7] = '0' + i;
1072 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1073 {
1074 RtlFreeAnsiString( &unix_name );
1075 if (p + 5 >= target + bufsize)
1076 {
1077 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1078 return 0;
1079 }
1080 strcpyW( p, comW );
1081 p[3] = '0' + i;
1082 p[4] = 0;
1083 p += 5;
1084 }
1085 }
1086 strcpyW( nt_buffer + 4, lptW );
1087 for (i = 1; i <= 9; i++)
1088 {
1089 nt_buffer[7] = '0' + i;
1090 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1091 {
1092 RtlFreeAnsiString( &unix_name );
1093 if (p + 5 >= target + bufsize)
1094 {
1095 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1096 return 0;
1097 }
1098 strcpyW( p, lptW );
1099 p[3] = '0' + i;
1100 p[4] = 0;
1101 p += 5;
1102 }
1103 }
1104
1105 strcpyW( nt_buffer + 4, rootW );
1106 RtlInitUnicodeString( &nt_name, nt_buffer );
1107
1108 /* FIXME: should simply enumerate the DosDevices directory instead */
1109 for (i = 0; i < 26; i++)
1110 {
1111 WCHAR buffer[sizeof(driveW)/sizeof(WCHAR)], dummy[8];
1112 NTSTATUS status;
1113
1114 memcpy( buffer, driveW, sizeof(driveW) );
1115 buffer[12] = 'A' + i;
1116 status = read_nt_symlink( buffer, dummy, sizeof(dummy)/sizeof(WCHAR) );
1117 if (status == STATUS_SUCCESS || status == STATUS_BUFFER_TOO_SMALL)
1118 {
1119 if (p + 3 >= target + bufsize)
1120 {
1121 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1122 return 0;
1123 }
1124 *p++ = 'A' + i;
1125 *p++ = ':';
1126 *p++ = 0;
1127 }
1128 }
1129 *p++ = 0; /* terminating null */
1130 return p - target;
1131 }
1132 }
1133
1134
1135 /***********************************************************************
1136 * QueryDosDeviceA (KERNEL32.@)
1137 *
1138 * returns array of strings terminated by \0, terminated by \0
1139 */
1140 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1141 {
1142 DWORD ret = 0, retW;
1143 WCHAR *devnameW = NULL;
1144 LPWSTR targetW;
1145
1146 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1147
1148 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1149 if (!targetW)
1150 {
1151 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1152 return 0;
1153 }
1154
1155 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1156
1157 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1158
1159 HeapFree(GetProcessHeap(), 0, targetW);
1160 return ret;
1161 }
1162
1163
1164 /***********************************************************************
1165 * GetLogicalDrives (KERNEL32.@)
1166 */
1167 DWORD WINAPI GetLogicalDrives(void)
1168 {
1169 const char *config_dir = wine_get_config_dir();
1170 struct stat st;
1171 char *buffer, *dev;
1172 DWORD ret = 0;
1173 int i;
1174
1175 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1176 {
1177 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1178 return 0;
1179 }
1180 strcpy( buffer, config_dir );
1181 strcat( buffer, "/dosdevices/a:" );
1182 dev = buffer + strlen(buffer) - 2;
1183
1184 for (i = 0; i < 26; i++)
1185 {
1186 *dev = 'a' + i;
1187 if (!stat( buffer, &st )) ret |= (1 << i);
1188 }
1189 HeapFree( GetProcessHeap(), 0, buffer );
1190 return ret;
1191 }
1192
1193
1194 /***********************************************************************
1195 * GetLogicalDriveStringsA (KERNEL32.@)
1196 */
1197 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1198 {
1199 DWORD drives = GetLogicalDrives();
1200 UINT drive, count;
1201
1202 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1203 if ((count * 4) + 1 > len) return count * 4 + 1;
1204
1205 for (drive = 0; drive < 26; drive++)
1206 {
1207 if (drives & (1 << drive))
1208 {
1209 *buffer++ = 'A' + drive;
1210 *buffer++ = ':';
1211 *buffer++ = '\\';
1212 *buffer++ = 0;
1213 }
1214 }
1215 *buffer = 0;
1216 return count * 4;
1217 }
1218
1219
1220 /***********************************************************************
1221 * GetLogicalDriveStringsW (KERNEL32.@)
1222 */
1223 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1224 {
1225 DWORD drives = GetLogicalDrives();
1226 UINT drive, count;
1227
1228 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1229 if ((count * 4) + 1 > len) return count * 4 + 1;
1230
1231 for (drive = 0; drive < 26; drive++)
1232 {
1233 if (drives & (1 << drive))
1234 {
1235 *buffer++ = 'A' + drive;
1236 *buffer++ = ':';
1237 *buffer++ = '\\';
1238 *buffer++ = 0;
1239 }
1240 }
1241 *buffer = 0;
1242 return count * 4;
1243 }
1244
1245
1246 /***********************************************************************
1247 * GetDriveTypeW (KERNEL32.@)
1248 *
1249 * Returns the type of the disk drive specified. If root is NULL the
1250 * root of the current directory is used.
1251 *
1252 * RETURNS
1253 *
1254 * Type of drive (from Win32 SDK):
1255 *
1256 * DRIVE_UNKNOWN unable to find out anything about the drive
1257 * DRIVE_NO_ROOT_DIR nonexistent root dir
1258 * DRIVE_REMOVABLE the disk can be removed from the machine
1259 * DRIVE_FIXED the disk cannot be removed from the machine
1260 * DRIVE_REMOTE network disk
1261 * DRIVE_CDROM CDROM drive
1262 * DRIVE_RAMDISK virtual disk in RAM
1263 */
1264 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1265 {
1266 FILE_FS_DEVICE_INFORMATION info;
1267 IO_STATUS_BLOCK io;
1268 NTSTATUS status;
1269 HANDLE handle;
1270 UINT ret;
1271
1272 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1273
1274 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1275 NtClose( handle );
1276 if (status != STATUS_SUCCESS)
1277 {
1278 SetLastError( RtlNtStatusToDosError(status) );
1279 ret = DRIVE_UNKNOWN;
1280 }
1281 else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1282 {
1283 switch (info.DeviceType)
1284 {
1285 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1286 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1287 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1288 case FILE_DEVICE_DISK_FILE_SYSTEM:
1289 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1290 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1291 else ret = DRIVE_FIXED;
1292 break;
1293 default:
1294 ret = DRIVE_UNKNOWN;
1295 break;
1296 }
1297 }
1298 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1299 return ret;
1300 }
1301
1302
1303 /***********************************************************************
1304 * GetDriveTypeA (KERNEL32.@)
1305 *
1306 * See GetDriveTypeW.
1307 */
1308 UINT WINAPI GetDriveTypeA( LPCSTR root )
1309 {
1310 WCHAR *rootW = NULL;
1311
1312 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1313 return GetDriveTypeW( rootW );
1314 }
1315
1316
1317 /***********************************************************************
1318 * GetDiskFreeSpaceExW (KERNEL32.@)
1319 *
1320 * This function is used to acquire the size of the available and
1321 * total space on a logical volume.
1322 *
1323 * RETURNS
1324 *
1325 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1326 * detailed error information.
1327 *
1328 */
1329 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1330 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1331 {
1332 FILE_FS_SIZE_INFORMATION info;
1333 IO_STATUS_BLOCK io;
1334 NTSTATUS status;
1335 HANDLE handle;
1336 UINT units;
1337
1338 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1339
1340 if (!open_device_root( root, &handle )) return FALSE;
1341
1342 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1343 NtClose( handle );
1344 if (status != STATUS_SUCCESS)
1345 {
1346 SetLastError( RtlNtStatusToDosError(status) );
1347 return FALSE;
1348 }
1349
1350 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1351 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1352 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1353 /* FIXME: this one should take quotas into account */
1354 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1355 return TRUE;
1356 }
1357
1358
1359 /***********************************************************************
1360 * GetDiskFreeSpaceExA (KERNEL32.@)
1361 *
1362 * See GetDiskFreeSpaceExW.
1363 */
1364 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1365 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1366 {
1367 WCHAR *rootW = NULL;
1368
1369 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1370 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1371 }
1372
1373
1374 /***********************************************************************
1375 * GetDiskFreeSpaceW (KERNEL32.@)
1376 */
1377 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1378 LPDWORD sector_bytes, LPDWORD free_clusters,
1379 LPDWORD total_clusters )
1380 {
1381 FILE_FS_SIZE_INFORMATION info;
1382 IO_STATUS_BLOCK io;
1383 NTSTATUS status;
1384 HANDLE handle;
1385 UINT units;
1386
1387 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1388 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1389
1390 if (!open_device_root( root, &handle )) return FALSE;
1391
1392 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1393 NtClose( handle );
1394 if (status != STATUS_SUCCESS)
1395 {
1396 SetLastError( RtlNtStatusToDosError(status) );
1397 return FALSE;
1398 }
1399
1400 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1401
1402 if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
1403 /* cap the size and available at 2GB as per specs */
1404 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1405 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1406 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1407 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1408 }
1409 /* nr. of clusters is always <= 65335 */
1410 while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1411 info.TotalAllocationUnits.QuadPart /= 2;
1412 info.AvailableAllocationUnits.QuadPart /= 2;
1413 info.SectorsPerAllocationUnit *= 2;
1414 }
1415 }
1416
1417 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1418 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1419 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1420 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1421 return TRUE;
1422 }
1423
1424
1425 /***********************************************************************
1426 * GetDiskFreeSpaceA (KERNEL32.@)
1427 */
1428 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1429 LPDWORD sector_bytes, LPDWORD free_clusters,
1430 LPDWORD total_clusters )
1431 {
1432 WCHAR *rootW = NULL;
1433
1434 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1435 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1436 }
1437
1438 /***********************************************************************
1439 * GetVolumePathNameA (KERNEL32.@)
1440 */
1441 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1442 {
1443 FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1444 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1445 return FALSE;
1446 }
1447
1448 /***********************************************************************
1449 * GetVolumePathNameW (KERNEL32.@)
1450 */
1451 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1452 {
1453 FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1454 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1455 return FALSE;
1456 }
1457
1458 /***********************************************************************
1459 * FindFirstVolumeA (KERNEL32.@)
1460 */
1461 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1462 {
1463 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1464 HANDLE handle = FindFirstVolumeW( buffer, len );
1465
1466 if (handle != INVALID_HANDLE_VALUE)
1467 {
1468 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1469 {
1470 FindVolumeClose( handle );
1471 handle = INVALID_HANDLE_VALUE;
1472 }
1473 }
1474 HeapFree( GetProcessHeap(), 0, buffer );
1475 return handle;
1476 }
1477
1478 /***********************************************************************
1479 * FindFirstVolumeW (KERNEL32.@)
1480 */
1481 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1482 {
1483 DWORD size = 1024;
1484 HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1485 NULL, OPEN_EXISTING, 0, 0 );
1486 if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1487
1488 for (;;)
1489 {
1490 MOUNTMGR_MOUNT_POINT input;
1491 MOUNTMGR_MOUNT_POINTS *output;
1492
1493 if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1494 {
1495 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1496 break;
1497 }
1498 memset( &input, 0, sizeof(input) );
1499
1500 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1501 output, size, NULL, NULL ))
1502 {
1503 if (GetLastError() != ERROR_MORE_DATA) break;
1504 size = output->Size;
1505 HeapFree( GetProcessHeap(), 0, output );
1506 continue;
1507 }
1508 CloseHandle( mgr );
1509 /* abuse the Size field to store the current index */
1510 output->Size = 0;
1511 if (!FindNextVolumeW( output, volume, len ))
1512 {
1513 HeapFree( GetProcessHeap(), 0, output );
1514 return INVALID_HANDLE_VALUE;
1515 }
1516 return (HANDLE)output;
1517 }
1518 CloseHandle( mgr );
1519 return INVALID_HANDLE_VALUE;
1520 }
1521
1522 /***********************************************************************
1523 * FindNextVolumeA (KERNEL32.@)
1524 */
1525 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1526 {
1527 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1528 BOOL ret;
1529
1530 if ((ret = FindNextVolumeW( handle, buffer, len )))
1531 {
1532 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1533 }
1534 HeapFree( GetProcessHeap(), 0, buffer );
1535 return ret;
1536 }
1537
1538 /***********************************************************************
1539 * FindNextVolumeW (KERNEL32.@)
1540 */
1541 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
1542 {
1543 MOUNTMGR_MOUNT_POINTS *data = handle;
1544
1545 while (data->Size < data->NumberOfMountPoints)
1546 {
1547 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
1548 WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
1549 DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
1550 data->Size++;
1551 /* skip non-volumes */
1552 if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
1553 if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
1554 {
1555 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1556 return FALSE;
1557 }
1558 memcpy( volume, link, size );
1559 volume[1] = '\\'; /* map \??\ to \\?\ */
1560 volume[size / sizeof(WCHAR)] = '\\'; /* Windows appends a backslash */
1561 volume[size / sizeof(WCHAR) + 1] = 0;
1562 TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
1563 return TRUE;
1564 }
1565 SetLastError( ERROR_NO_MORE_FILES );
1566 return FALSE;
1567 }
1568
1569 /***********************************************************************
1570 * FindVolumeClose (KERNEL32.@)
1571 */
1572 BOOL WINAPI FindVolumeClose(HANDLE handle)
1573 {
1574 return HeapFree( GetProcessHeap(), 0, handle );
1575 }
1576
1577 /***********************************************************************
1578 * FindFirstVolumeMountPointA (KERNEL32.@)
1579 */
1580 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1581 {
1582 FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1583 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1584 return INVALID_HANDLE_VALUE;
1585 }
1586
1587 /***********************************************************************
1588 * FindFirstVolumeMountPointW (KERNEL32.@)
1589 */
1590 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1591 {
1592 FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1593 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1594 return INVALID_HANDLE_VALUE;
1595 }
1596
1597 /***********************************************************************
1598 * FindVolumeMountPointClose (KERNEL32.@)
1599 */
1600 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1601 {
1602 FIXME("(%p), stub!\n", h);
1603 return FALSE;
1604 }
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