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comdlg32: Update Lithuanian translation.
[wine/multimedia.git] / dlls / kernel32 / volume.c
bloba937f6b17567fc525d79086dba460c877e55573e
1 /*
2 * Volume management functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 1996, 2004 Alexandre Julliard
6 * Copyright 1999 Petr Tomasek
7 * Copyright 2000 Andreas Mohr
8 * Copyright 2003 Eric Pouech
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "winnls.h"
37 #include "winternl.h"
38 #include "winioctl.h"
39 #include "ntddcdrm.h"
40 #define WINE_MOUNTMGR_EXTENSIONS
41 #include "ddk/mountmgr.h"
42 #include "kernel_private.h"
43 #include "wine/library.h"
44 #include "wine/unicode.h"
45 #include "wine/debug.h"
46
47 WINE_DEFAULT_DEBUG_CHANNEL(volume);
48
49 #define BLOCK_SIZE 2048
50 #define SUPERBLOCK_SIZE BLOCK_SIZE
51 #define SYMBOLIC_LINK_QUERY 0x0001
52
53 #define CDFRAMES_PERSEC 75
54 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
55 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
56 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
57
58 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
59 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
60
61 enum fs_type
62 {
63 FS_ERROR, /* error accessing the device */
64 FS_UNKNOWN, /* unknown file system */
65 FS_FAT1216,
66 FS_FAT32,
67 FS_ISO9660,
68 FS_UDF /* For reference [E] = Ecma-167.pdf, [U] = udf260.pdf */
69 };
70
71 /* read a Unix symlink; returned buffer must be freed by caller */
72 static char *read_symlink( const char *path )
73 {
74 char *buffer;
75 int ret, size = 128;
76
77 for (;;)
78 {
79 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
80 {
81 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
82 return 0;
83 }
84 ret = readlink( path, buffer, size );
85 if (ret == -1)
86 {
87 FILE_SetDosError();
88 HeapFree( GetProcessHeap(), 0, buffer );
89 return 0;
90 }
91 if (ret != size)
92 {
93 buffer[ret] = 0;
94 return buffer;
95 }
96 HeapFree( GetProcessHeap(), 0, buffer );
97 size *= 2;
98 }
99 }
100
101 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
102 static char *get_dos_device_path( LPCWSTR name )
103 {
104 const char *config_dir = wine_get_config_dir();
105 char *buffer, *dev;
106 int i;
107
108 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
109 strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
110 {
111 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
112 return NULL;
113 }
114 strcpy( buffer, config_dir );
115 strcat( buffer, "/dosdevices/" );
116 dev = buffer + strlen(buffer);
117 /* no codepage conversion, DOS device names are ASCII anyway */
118 for (i = 0; i < 5; i++)
119 if (!(dev[i] = (char)tolowerW(name[i]))) break;
120 dev[5] = 0;
121 return buffer;
122 }
123
124 /* read the contents of an NT symlink object */
125 static NTSTATUS read_nt_symlink( const WCHAR *name, WCHAR *target, DWORD size )
126 {
127 NTSTATUS status;
128 OBJECT_ATTRIBUTES attr;
129 UNICODE_STRING nameW;
130 HANDLE handle;
131
132 attr.Length = sizeof(attr);
133 attr.RootDirectory = 0;
134 attr.Attributes = OBJ_CASE_INSENSITIVE;
135 attr.ObjectName = &nameW;
136 attr.SecurityDescriptor = NULL;
137 attr.SecurityQualityOfService = NULL;
138 RtlInitUnicodeString( &nameW, name );
139
140 if (!(status = NtOpenSymbolicLinkObject( &handle, SYMBOLIC_LINK_QUERY, &attr )))
141 {
142 UNICODE_STRING targetW;
143 targetW.Buffer = target;
144 targetW.MaximumLength = (size - 1) * sizeof(WCHAR);
145 status = NtQuerySymbolicLinkObject( handle, &targetW, NULL );
146 if (!status) target[targetW.Length / sizeof(WCHAR)] = 0;
147 NtClose( handle );
148 }
149 return status;
150 }
151
152 /* open a handle to a device root */
153 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
154 {
155 static const WCHAR default_rootW[] = {'\\',0};
156 UNICODE_STRING nt_name;
157 OBJECT_ATTRIBUTES attr;
158 IO_STATUS_BLOCK io;
159 NTSTATUS status;
160
161 if (!root) root = default_rootW;
162 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
163 {
164 SetLastError( ERROR_PATH_NOT_FOUND );
165 return FALSE;
166 }
167 attr.Length = sizeof(attr);
168 attr.RootDirectory = 0;
169 attr.Attributes = OBJ_CASE_INSENSITIVE;
170 attr.ObjectName = &nt_name;
171 attr.SecurityDescriptor = NULL;
172 attr.SecurityQualityOfService = NULL;
173
174 status = NtOpenFile( handle, 0, &attr, &io, 0,
175 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
176 RtlFreeUnicodeString( &nt_name );
177 if (status != STATUS_SUCCESS)
178 {
179 SetLastError( RtlNtStatusToDosError(status) );
180 return FALSE;
181 }
182 return TRUE;
183 }
184
185 /* query the type of a drive from the mount manager */
186 static DWORD get_mountmgr_drive_type( LPCWSTR root )
187 {
188 HANDLE mgr;
189 struct mountmgr_unix_drive data;
190
191 memset( &data, 0, sizeof(data) );
192 if (root) data.letter = root[0];
193 else
194 {
195 WCHAR curdir[MAX_PATH];
196 GetCurrentDirectoryW( MAX_PATH, curdir );
197 if (curdir[1] != ':' || curdir[2] != '\\') return DRIVE_UNKNOWN;
198 data.letter = curdir[0];
199 }
200
201 mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ,
202 FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
203 if (mgr == INVALID_HANDLE_VALUE) return DRIVE_UNKNOWN;
204
205 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, &data, sizeof(data), &data,
206 sizeof(data), NULL, NULL ) && GetLastError() != ERROR_MORE_DATA)
207 data.type = DRIVE_UNKNOWN;
208
209 CloseHandle( mgr );
210 return data.type;
211 }
212
213 /* get the label by reading it from a file at the root of the filesystem */
214 static void get_filesystem_label( const UNICODE_STRING *device, WCHAR *label, DWORD len )
215 {
216 static const WCHAR labelW[] = {'.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
217 HANDLE handle;
218 UNICODE_STRING name;
219 IO_STATUS_BLOCK io;
220 OBJECT_ATTRIBUTES attr;
221
222 label[0] = 0;
223
224 attr.Length = sizeof(attr);
225 attr.RootDirectory = 0;
226 attr.Attributes = OBJ_CASE_INSENSITIVE;
227 attr.ObjectName = &name;
228 attr.SecurityDescriptor = NULL;
229 attr.SecurityQualityOfService = NULL;
230
231 name.MaximumLength = device->Length + sizeof(labelW);
232 name.Length = name.MaximumLength - sizeof(WCHAR);
233 if (!(name.Buffer = HeapAlloc( GetProcessHeap(), 0, name.MaximumLength ))) return;
234
235 memcpy( name.Buffer, device->Buffer, device->Length );
236 memcpy( name.Buffer + device->Length / sizeof(WCHAR), labelW, sizeof(labelW) );
237 if (!NtOpenFile( &handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ|FILE_SHARE_WRITE,
238 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT ))
239 {
240 char buffer[256], *p;
241 DWORD size;
242
243 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
244 CloseHandle( handle );
245 p = buffer + size;
246 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
247 *p = 0;
248 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
249 label[len-1] = 0;
250 }
251 RtlFreeUnicodeString( &name );
252 }
253
254 /* get the serial number by reading it from a file at the root of the filesystem */
255 static DWORD get_filesystem_serial( const UNICODE_STRING *device )
256 {
257 static const WCHAR serialW[] = {'.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
258 HANDLE handle;
259 UNICODE_STRING name;
260 IO_STATUS_BLOCK io;
261 OBJECT_ATTRIBUTES attr;
262 DWORD ret = 0;
263
264 attr.Length = sizeof(attr);
265 attr.RootDirectory = 0;
266 attr.Attributes = OBJ_CASE_INSENSITIVE;
267 attr.ObjectName = &name;
268 attr.SecurityDescriptor = NULL;
269 attr.SecurityQualityOfService = NULL;
270
271 name.MaximumLength = device->Length + sizeof(serialW);
272 name.Length = name.MaximumLength - sizeof(WCHAR);
273 if (!(name.Buffer = HeapAlloc( GetProcessHeap(), 0, name.MaximumLength ))) return 0;
274
275 memcpy( name.Buffer, device->Buffer, device->Length );
276 memcpy( name.Buffer + device->Length / sizeof(WCHAR), serialW, sizeof(serialW) );
277 if (!NtOpenFile( &handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ|FILE_SHARE_WRITE,
278 FILE_SYNCHRONOUS_IO_NONALERT ))
279 {
280 char buffer[32];
281 DWORD size;
282
283 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
284 CloseHandle( handle );
285 buffer[size] = 0;
286 ret = strtoul( buffer, NULL, 16 );
287 }
288 RtlFreeUnicodeString( &name );
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_ReadCDBlock
393 */
394 static BOOL VOLUME_ReadCDBlock( HANDLE handle, BYTE *buff, INT offs )
395 {
396 DWORD size, whence = offs >= 0 ? FILE_BEGIN : FILE_END;
397
398 if (SetFilePointer( handle, offs, NULL, whence ) != offs ||
399 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
400 size != SUPERBLOCK_SIZE)
401 return FALSE;
402
403 return TRUE;
404 }
405
406
407 /***********************************************************************
408 * VOLUME_ReadCDSuperblock
409 */
410 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
411 {
412 int i;
413 DWORD offs;
414
415 /* Check UDF first as UDF and ISO9660 structures can coexist on the same medium
416 * Starting from sector 16, we may find :
417 * - a CD-ROM Volume Descriptor Set (ISO9660) containing one or more Volume Descriptors
418 * - an Extented Area (UDF) -- [E] 2/8.3.1 and [U] 2.1.7
419 * There is no explicit end so read 16 sectors and then give up */
420 for( i=16; i<16+16; i++)
421 {
422 if (!VOLUME_ReadCDBlock(handle, buff, i*BLOCK_SIZE))
423 continue;
424
425 /* We are supposed to check "BEA01", "NSR0x" and "TEA01" IDs + verify tag checksum
426 * but we assume the volume is well-formatted */
427 if (!memcmp(&buff[1], "BEA01", 5)) return FS_UDF;
428 }
429
430 offs = VOLUME_FindCdRomDataBestVoldesc( handle );
431 if (!offs) return FS_UNKNOWN;
432
433 if (!VOLUME_ReadCDBlock(handle, buff, offs))
434 return FS_ERROR;
435
436 /* check for the iso9660 identifier */
437 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
438 return FS_UNKNOWN;
439 }
440
441
442 /**************************************************************************
443 * UDF_Find_PVD
444 * Find the Primary Volume Descriptor
445 */
446 static BOOL UDF_Find_PVD( HANDLE handle, BYTE pvd[] )
447 {
448 int i;
449 DWORD offset;
450 INT locations[] = { 256, -1, -257, 512 };
451
452 for(i=0; i<sizeof(locations)/sizeof(locations[0]); i++)
453 {
454 if (!VOLUME_ReadCDBlock(handle, pvd, locations[i]*BLOCK_SIZE))
455 return FALSE;
456
457 /* Tag Identifier of Anchor Volume Descriptor Pointer is 2 -- [E] 3/10.2.1 */
458 if (pvd[0]==2 && pvd[1]==0)
459 {
460 /* Tag location (Uint32) at offset 12, little-endian */
461 offset = pvd[20 + 0];
462 offset |= pvd[20 + 1] << 8;
463 offset |= pvd[20 + 2] << 16;
464 offset |= pvd[20 + 3] << 24;
465 offset *= BLOCK_SIZE;
466
467 if (!VOLUME_ReadCDBlock(handle, pvd, offset))
468 return FALSE;
469
470 /* Check for the Primary Volume Descriptor Tag Id -- [E] 3/10.1.1 */
471 if (pvd[0]!=1 || pvd[1]!=0)
472 return FALSE;
473
474 /* 8 or 16 bits per character -- [U] 2.1.1 */
475 if (!(pvd[24]==8 || pvd[24]==16))
476 return FALSE;
477
478 return TRUE;
479 }
480 }
481
482 return FALSE;
483 }
484
485
486 /**************************************************************************
487 * VOLUME_GetSuperblockLabel
488 */
489 static void VOLUME_GetSuperblockLabel( const UNICODE_STRING *device, HANDLE handle,
490 enum fs_type type, const BYTE *superblock,
491 WCHAR *label, DWORD len )
492 {
493 const BYTE *label_ptr = NULL;
494 DWORD label_len;
495
496 switch(type)
497 {
498 case FS_ERROR:
499 label_len = 0;
500 break;
501 case FS_UNKNOWN:
502 get_filesystem_label( device, label, len );
503 return;
504 case FS_FAT1216:
505 label_ptr = superblock + 0x2b;
506 label_len = 11;
507 break;
508 case FS_FAT32:
509 label_ptr = superblock + 0x47;
510 label_len = 11;
511 break;
512 case FS_ISO9660:
513 {
514 BYTE ver = superblock[0x5a];
515
516 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
517 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
518 { /* yippee, unicode */
519 unsigned int i;
520
521 if (len > 17) len = 17;
522 for (i = 0; i < len-1; i++)
523 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
524 label[i] = 0;
525 while (i && label[i-1] == ' ') label[--i] = 0;
526 return;
527 }
528 label_ptr = superblock + 40;
529 label_len = 32;
530 break;
531 }
532 case FS_UDF:
533 {
534 BYTE pvd[BLOCK_SIZE];
535
536 if(!UDF_Find_PVD(handle, pvd))
537 {
538 label_len = 0;
539 break;
540 }
541
542 /* [E] 3/10.1.4 and [U] 2.1.1 */
543 if(pvd[24]==8)
544 {
545 label_ptr = pvd + 24 + 1;
546 label_len = pvd[24+32-1];
547 break;
548 }
549 else
550 {
551 int i;
552
553 label_len = 1 + pvd[24+32-1];
554 for(i=0; i<label_len && i<len; i+=2)
555 label[i/2] = (pvd[24+1 +i] << 8) | pvd[24+1 +i+1];
556 label[label_len] = 0;
557 return;
558 }
559 }
560 }
561 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
562 &label_len, (LPCSTR)label_ptr, label_len );
563 label_len /= sizeof(WCHAR);
564 label[label_len] = 0;
565 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
566 }
567
568
569 /**************************************************************************
570 * VOLUME_GetSuperblockSerial
571 */
572 static DWORD VOLUME_GetSuperblockSerial( const UNICODE_STRING *device, HANDLE handle,
573 enum fs_type type, const BYTE *superblock )
574 {
575 switch(type)
576 {
577 case FS_ERROR:
578 break;
579 case FS_UNKNOWN:
580 return get_filesystem_serial( device );
581 case FS_FAT1216:
582 return GETLONG( superblock, 0x27 );
583 case FS_FAT32:
584 return GETLONG( superblock, 0x33 );
585 case FS_UDF:
586 {
587 BYTE block[BLOCK_SIZE];
588
589 if (!VOLUME_ReadCDBlock(handle, block, 257*BLOCK_SIZE))
590 break;
591
592 superblock = block;
593
594 /* fallthrough */
595 }
596 case FS_ISO9660:
597 {
598 BYTE sum[4];
599 int i;
600
601 sum[0] = sum[1] = sum[2] = sum[3] = 0;
602 for (i = 0; i < 2048; i += 4)
603 {
604 /* DON'T optimize this into DWORD !! (breaks overflow) */
605 sum[0] += superblock[i+0];
606 sum[1] += superblock[i+1];
607 sum[2] += superblock[i+2];
608 sum[3] += superblock[i+3];
609 }
610 /*
611 * OK, another braindead one... argh. Just believe it.
612 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
613 * It's true and nobody will ever be able to change it.
614 */
615 if ((GetVersion() & 0x80000000) || type == FS_UDF)
616 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
617 else
618 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
619 }
620 }
621 return 0;
622 }
623
624
625 /**************************************************************************
626 * VOLUME_GetAudioCDSerial
627 */
628 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
629 {
630 DWORD serial = 0;
631 int i;
632
633 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
634 serial += ((toc->TrackData[i].Address[1] << 16) |
635 (toc->TrackData[i].Address[2] << 8) |
636 toc->TrackData[i].Address[3]);
637
638 /*
639 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
640 * frames.
641 * There it is collected for correcting the serial when there are less than
642 * 3 tracks.
643 */
644 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
645 {
646 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
647 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
648 serial += dwEnd - dwStart;
649 }
650 return serial;
651 }
652
653
654 /***********************************************************************
655 * GetVolumeInformationW (KERNEL32.@)
656 */
657 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
658 DWORD *serial, DWORD *filename_len, DWORD *flags,
659 LPWSTR fsname, DWORD fsname_len )
660 {
661 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
662 static const WCHAR fatW[] = {'F','A','T',0};
663 static const WCHAR fat32W[] = {'F','A','T','3','2',0};
664 static const WCHAR ntfsW[] = {'N','T','F','S',0};
665 static const WCHAR cdfsW[] = {'C','D','F','S',0};
666 static const WCHAR udfW[] = {'U','D','F',0};
667 static const WCHAR default_rootW[] = {'\\',0};
668
669 HANDLE handle;
670 NTSTATUS status;
671 UNICODE_STRING nt_name;
672 IO_STATUS_BLOCK io;
673 OBJECT_ATTRIBUTES attr;
674 FILE_FS_DEVICE_INFORMATION info;
675 WCHAR *p;
676 enum fs_type type = FS_UNKNOWN;
677 BOOL ret = FALSE;
678
679 if (!root) root = default_rootW;
680 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
681 {
682 SetLastError( ERROR_PATH_NOT_FOUND );
683 return FALSE;
684 }
685 /* there must be exactly one backslash in the name, at the end */
686 p = memchrW( nt_name.Buffer + 4, '\\', (nt_name.Length - 4) / sizeof(WCHAR) );
687 if (p != nt_name.Buffer + nt_name.Length / sizeof(WCHAR) - 1)
688 {
689 /* check if root contains an explicit subdir */
690 if (root[0] && root[1] == ':') root += 2;
691 while (*root == '\\') root++;
692 if (strchrW( root, '\\' ))
693 SetLastError( ERROR_DIR_NOT_ROOT );
694 else
695 SetLastError( ERROR_INVALID_NAME );
696 goto done;
697 }
698
699 /* try to open the device */
700
701 attr.Length = sizeof(attr);
702 attr.RootDirectory = 0;
703 attr.Attributes = OBJ_CASE_INSENSITIVE;
704 attr.ObjectName = &nt_name;
705 attr.SecurityDescriptor = NULL;
706 attr.SecurityQualityOfService = NULL;
707
708 nt_name.Length -= sizeof(WCHAR); /* without trailing slash */
709 status = NtOpenFile( &handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ | FILE_SHARE_WRITE,
710 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
711 nt_name.Length += sizeof(WCHAR);
712
713 if (status == STATUS_SUCCESS)
714 {
715 BYTE superblock[SUPERBLOCK_SIZE];
716 CDROM_TOC toc;
717 DWORD br;
718
719 /* check for audio CD */
720 /* FIXME: we only check the first track for now */
721 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
722 {
723 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
724 {
725 TRACE( "%s: found audio CD\n", debugstr_w(nt_name.Buffer) );
726 if (label) lstrcpynW( label, audiocdW, label_len );
727 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
728 CloseHandle( handle );
729 type = FS_ISO9660;
730 goto fill_fs_info;
731 }
732 type = VOLUME_ReadCDSuperblock( handle, superblock );
733 }
734 else
735 {
736 type = VOLUME_ReadFATSuperblock( handle, superblock );
737 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
738 }
739 TRACE( "%s: found fs type %d\n", debugstr_w(nt_name.Buffer), type );
740 if (type == FS_ERROR)
741 {
742 CloseHandle( handle );
743 goto done;
744 }
745
746 if (label && label_len) VOLUME_GetSuperblockLabel( &nt_name, handle, type, superblock, label, label_len );
747 if (serial) *serial = VOLUME_GetSuperblockSerial( &nt_name, handle, type, superblock );
748 CloseHandle( handle );
749 goto fill_fs_info;
750 }
751 else TRACE( "cannot open device %s: %x\n", debugstr_w(nt_name.Buffer), status );
752
753 /* we couldn't open the device, fallback to default strategy */
754
755 status = NtOpenFile( &handle, 0, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
756 if (status != STATUS_SUCCESS)
757 {
758 SetLastError( RtlNtStatusToDosError(status) );
759 goto done;
760 }
761 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
762 NtClose( handle );
763 if (status != STATUS_SUCCESS)
764 {
765 SetLastError( RtlNtStatusToDosError(status) );
766 goto done;
767 }
768 if (info.DeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM) type = FS_ISO9660;
769
770 if (label && label_len) get_filesystem_label( &nt_name, label, label_len );
771 if (serial) *serial = get_filesystem_serial( &nt_name );
772
773 fill_fs_info: /* now fill in the information that depends on the file system type */
774
775 switch(type)
776 {
777 case FS_ISO9660:
778 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
779 if (filename_len) *filename_len = 221;
780 if (flags) *flags = FILE_READ_ONLY_VOLUME;
781 break;
782 case FS_UDF:
783 if (fsname) lstrcpynW( fsname, udfW, fsname_len );
784 if (filename_len) *filename_len = 255;
785 if (flags)
786 *flags = FILE_READ_ONLY_VOLUME | FILE_UNICODE_ON_DISK | FILE_CASE_SENSITIVE_SEARCH;
787 break;
788 case FS_FAT1216:
789 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
790 case FS_FAT32:
791 if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
792 if (filename_len) *filename_len = 255;
793 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
794 break;
795 default:
796 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
797 if (filename_len) *filename_len = 255;
798 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
799 break;
800 }
801 ret = TRUE;
802
803 done:
804 RtlFreeUnicodeString( &nt_name );
805 return ret;
806 }
807
808
809 /***********************************************************************
810 * GetVolumeInformationA (KERNEL32.@)
811 */
812 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
813 DWORD label_len, DWORD *serial,
814 DWORD *filename_len, DWORD *flags,
815 LPSTR fsname, DWORD fsname_len )
816 {
817 WCHAR *rootW = NULL;
818 LPWSTR labelW, fsnameW;
819 BOOL ret;
820
821 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
822
823 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
824 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
825
826 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
827 filename_len, flags, fsnameW, fsname_len)))
828 {
829 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
830 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
831 }
832
833 HeapFree( GetProcessHeap(), 0, labelW );
834 HeapFree( GetProcessHeap(), 0, fsnameW );
835 return ret;
836 }
837
838
839
840 /***********************************************************************
841 * SetVolumeLabelW (KERNEL32.@)
842 */
843 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
844 {
845 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
846 HANDLE handle;
847 enum fs_type type = FS_UNKNOWN;
848
849 if (!root)
850 {
851 WCHAR path[MAX_PATH];
852 GetCurrentDirectoryW( MAX_PATH, path );
853 device[4] = path[0];
854 }
855 else
856 {
857 if (!root[0] || root[1] != ':')
858 {
859 SetLastError( ERROR_INVALID_NAME );
860 return FALSE;
861 }
862 device[4] = root[0];
863 }
864
865 /* try to open the device */
866
867 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
868 NULL, OPEN_EXISTING, 0, 0 );
869 if (handle != INVALID_HANDLE_VALUE)
870 {
871 BYTE superblock[SUPERBLOCK_SIZE];
872
873 type = VOLUME_ReadFATSuperblock( handle, superblock );
874 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
875 CloseHandle( handle );
876 if (type != FS_UNKNOWN)
877 {
878 /* we can't set the label on FAT or CDROM file systems */
879 TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
880 SetLastError( ERROR_ACCESS_DENIED );
881 return FALSE;
882 }
883 }
884 else
885 {
886 TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
887 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
888 }
889
890 /* we couldn't open the device, fallback to default strategy */
891
892 switch(GetDriveTypeW( root ))
893 {
894 case DRIVE_UNKNOWN:
895 case DRIVE_NO_ROOT_DIR:
896 SetLastError( ERROR_NOT_READY );
897 break;
898 case DRIVE_REMOVABLE:
899 case DRIVE_FIXED:
900 {
901 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
902
903 labelW[0] = device[4];
904
905 if (!label[0]) /* delete label file when setting an empty label */
906 return DeleteFileW( labelW ) || GetLastError() == ERROR_FILE_NOT_FOUND;
907
908 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
909 CREATE_ALWAYS, 0, 0 );
910 if (handle != INVALID_HANDLE_VALUE)
911 {
912 char buffer[64];
913 DWORD size;
914
915 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer)-1, NULL, NULL ))
916 buffer[sizeof(buffer)-2] = 0;
917 strcat( buffer, "\n" );
918 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
919 CloseHandle( handle );
920 return TRUE;
921 }
922 break;
923 }
924 case DRIVE_REMOTE:
925 case DRIVE_RAMDISK:
926 case DRIVE_CDROM:
927 SetLastError( ERROR_ACCESS_DENIED );
928 break;
929 }
930 return FALSE;
931 }
932
933 /***********************************************************************
934 * SetVolumeLabelA (KERNEL32.@)
935 */
936 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
937 {
938 WCHAR *rootW = NULL, *volnameW = NULL;
939 BOOL ret;
940
941 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
942 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
943 ret = SetVolumeLabelW( rootW, volnameW );
944 HeapFree( GetProcessHeap(), 0, volnameW );
945 return ret;
946 }
947
948
949 /***********************************************************************
950 * GetVolumeNameForVolumeMountPointA (KERNEL32.@)
951 */
952 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
953 {
954 BOOL ret;
955 WCHAR volumeW[50], *pathW = NULL;
956 DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
957
958 TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
959
960 if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
961 return FALSE;
962
963 if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
964 FILE_name_WtoA( volumeW, -1, volume, len );
965
966 HeapFree( GetProcessHeap(), 0, pathW );
967 return ret;
968 }
969
970 /***********************************************************************
971 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
972 */
973 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
974 {
975 static const WCHAR prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
976 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',0};
977 static const WCHAR trailingW[] = {'\\',0};
978
979 MOUNTMGR_MOUNT_POINT *input = NULL, *o1;
980 MOUNTMGR_MOUNT_POINTS *output = NULL;
981 WCHAR *p;
982 char *r;
983 DWORD i, i_size = 1024, o_size = 1024;
984 WCHAR *nonpersist_name;
985 WCHAR symlink_name[MAX_PATH];
986 NTSTATUS status;
987 HANDLE mgr = INVALID_HANDLE_VALUE;
988 BOOL ret = FALSE;
989
990 TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
991 if (path[lstrlenW(path)-1] != '\\')
992 {
993 SetLastError( ERROR_INVALID_NAME );
994 return FALSE;
995 }
996
997 if (size < 50)
998 {
999 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1000 return FALSE;
1001 }
1002 /* if length of input is > 3 then it must be a mounted folder */
1003 if (lstrlenW(path) > 3)
1004 {
1005 FIXME("Mounted Folders are not yet supported\n");
1006 SetLastError( ERROR_NOT_A_REPARSE_POINT );
1007 return FALSE;
1008 }
1009
1010 mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ,
1011 NULL, OPEN_EXISTING, 0, 0 );
1012 if (mgr == INVALID_HANDLE_VALUE) return FALSE;
1013
1014 if (!(input = HeapAlloc( GetProcessHeap(), 0, i_size )))
1015 {
1016 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1017 goto err_ret;
1018 }
1019
1020 if (!(output = HeapAlloc( GetProcessHeap(), 0, o_size )))
1021 {
1022 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1023 goto err_ret;
1024 }
1025
1026 /* construct the symlink name as "\DosDevices\C:" */
1027 lstrcpyW( symlink_name, prefixW );
1028 lstrcatW( symlink_name, path );
1029 symlink_name[lstrlenW(symlink_name)-1] = 0;
1030
1031 /* Take the mount point and get the "nonpersistent name" */
1032 /* We will then take that and get the volume name */
1033 nonpersist_name = (WCHAR *)(input + 1);
1034 status = read_nt_symlink( symlink_name, nonpersist_name, i_size - sizeof(*input) );
1035 TRACE("read_nt_symlink got stat=%x, for %s, got <%s>\n", status,
1036 debugstr_w(symlink_name), debugstr_w(nonpersist_name));
1037 if (status != STATUS_SUCCESS)
1038 {
1039 SetLastError( ERROR_FILE_NOT_FOUND );
1040 goto err_ret;
1041 }
1042
1043 /* Now take the "nonpersistent name" and ask the mountmgr */
1044 /* to give us all the mount points. One of them will be */
1045 /* the volume name (format of \??\Volume{). */
1046 memset( input, 0, sizeof(*input) ); /* clear all input parameters */
1047 input->DeviceNameOffset = sizeof(*input);
1048 input->DeviceNameLength = lstrlenW( nonpersist_name) * sizeof(WCHAR);
1049 i_size = input->DeviceNameOffset + input->DeviceNameLength;
1050
1051 output->Size = o_size;
1052
1053 /* now get the true volume name from the mountmgr */
1054 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, i_size,
1055 output, o_size, NULL, NULL ))
1056 goto err_ret;
1057
1058 /* Verify and return the data, note string is not null terminated */
1059 TRACE("found %d matching mount points\n", output->NumberOfMountPoints);
1060 if (output->NumberOfMountPoints < 1)
1061 {
1062 SetLastError( ERROR_NO_VOLUME_ID );
1063 goto err_ret;
1064 }
1065 o1 = &output->MountPoints[0];
1066
1067 /* look for the volume name in returned values */
1068 for(i=0;i<output->NumberOfMountPoints;i++)
1069 {
1070 p = (WCHAR*)((char *)output + o1->SymbolicLinkNameOffset);
1071 r = (char *)output + o1->UniqueIdOffset;
1072 TRACE("found symlink=%s, unique=%s, devname=%s\n",
1073 debugstr_wn(p, o1->SymbolicLinkNameLength/sizeof(WCHAR)),
1074 debugstr_an(r, o1->UniqueIdLength),
1075 debugstr_wn((WCHAR*)((char *)output + o1->DeviceNameOffset),
1076 o1->DeviceNameLength/sizeof(WCHAR)));
1077
1078 if (!strncmpW( p, volumeW, (sizeof(volumeW)-1)/sizeof(WCHAR) ))
1079 {
1080 /* is there space in the return variable ?? */
1081 if ((o1->SymbolicLinkNameLength/sizeof(WCHAR))+2 > size)
1082 {
1083 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1084 goto err_ret;
1085 }
1086 memcpy( volume, p, o1->SymbolicLinkNameLength );
1087 volume[o1->SymbolicLinkNameLength / sizeof(WCHAR)] = 0;
1088 lstrcatW( volume, trailingW );
1089 /* change second char from '?' to '\' */
1090 volume[1] = '\\';
1091 ret = TRUE;
1092 break;
1093 }
1094 o1++;
1095 }
1096
1097 err_ret:
1098 HeapFree( GetProcessHeap(), 0, input );
1099 HeapFree( GetProcessHeap(), 0, output );
1100 CloseHandle( mgr );
1101 return ret;
1102 }
1103
1104 /***********************************************************************
1105 * DefineDosDeviceW (KERNEL32.@)
1106 */
1107 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
1108 {
1109 DWORD len, dosdev;
1110 BOOL ret = FALSE;
1111 char *path = NULL, *target, *p;
1112
1113 TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
1114
1115 if (!(flags & DDD_REMOVE_DEFINITION))
1116 {
1117 if (!(flags & DDD_RAW_TARGET_PATH))
1118 {
1119 FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
1120 flags, debugstr_w(devname), debugstr_w(targetpath) );
1121 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1122 return FALSE;
1123 }
1124
1125 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
1126 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
1127 {
1128 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
1129 for (p = target; *p; p++) if (*p == '\\') *p = '/';
1130 }
1131 else
1132 {
1133 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1134 return FALSE;
1135 }
1136 }
1137 else target = NULL;
1138
1139 /* first check for a DOS device */
1140
1141 if ((dosdev = RtlIsDosDeviceName_U( devname )))
1142 {
1143 WCHAR name[5];
1144
1145 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1146 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1147 path = get_dos_device_path( name );
1148 }
1149 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
1150 {
1151 path = get_dos_device_path( devname );
1152 }
1153 else SetLastError( ERROR_FILE_NOT_FOUND );
1154
1155 if (path)
1156 {
1157 if (target)
1158 {
1159 TRACE( "creating symlink %s -> %s\n", path, target );
1160 unlink( path );
1161 if (!symlink( target, path )) ret = TRUE;
1162 else FILE_SetDosError();
1163 }
1164 else
1165 {
1166 TRACE( "removing symlink %s\n", path );
1167 if (!unlink( path )) ret = TRUE;
1168 else FILE_SetDosError();
1169 }
1170 HeapFree( GetProcessHeap(), 0, path );
1171 }
1172 HeapFree( GetProcessHeap(), 0, target );
1173 return ret;
1174 }
1175
1176
1177 /***********************************************************************
1178 * DefineDosDeviceA (KERNEL32.@)
1179 */
1180 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
1181 {
1182 WCHAR *devW, *targetW = NULL;
1183 BOOL ret;
1184
1185 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
1186 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
1187 ret = DefineDosDeviceW(flags, devW, targetW);
1188 HeapFree( GetProcessHeap(), 0, targetW );
1189 return ret;
1190 }
1191
1192
1193 /***********************************************************************
1194 * QueryDosDeviceW (KERNEL32.@)
1195 *
1196 * returns array of strings terminated by \0, terminated by \0
1197 */
1198 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
1199 {
1200 static const WCHAR auxW[] = {'A','U','X',0};
1201 static const WCHAR nulW[] = {'N','U','L',0};
1202 static const WCHAR prnW[] = {'P','R','N',0};
1203 static const WCHAR comW[] = {'C','O','M',0};
1204 static const WCHAR lptW[] = {'L','P','T',0};
1205 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
1206 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
1207 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
1208 static const WCHAR dosdevW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
1209
1210 UNICODE_STRING nt_name;
1211 ANSI_STRING unix_name;
1212 WCHAR nt_buffer[10];
1213 NTSTATUS status;
1214
1215 if (!bufsize)
1216 {
1217 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1218 return 0;
1219 }
1220
1221 if (devname)
1222 {
1223 WCHAR *p, name[5];
1224 char *path, *link;
1225 DWORD dosdev, ret = 0;
1226
1227 if ((dosdev = RtlIsDosDeviceName_U( devname )))
1228 {
1229 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1230 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1231 }
1232 else
1233 {
1234 WCHAR *buffer;
1235
1236 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, sizeof(dosdevW) + strlenW(devname)*sizeof(WCHAR) )))
1237 {
1238 SetLastError( ERROR_OUTOFMEMORY );
1239 return 0;
1240 }
1241 memcpy( buffer, dosdevW, sizeof(dosdevW) );
1242 strcatW( buffer, devname );
1243 status = read_nt_symlink( buffer, target, bufsize );
1244 HeapFree( GetProcessHeap(), 0, buffer );
1245 if (status)
1246 {
1247 SetLastError( RtlNtStatusToDosError(status) );
1248 return 0;
1249 }
1250 ret = strlenW( target ) + 1;
1251 goto done;
1252 }
1253
1254 /* FIXME: should read NT symlink for all devices */
1255
1256 if (!(path = get_dos_device_path( name ))) return 0;
1257 link = read_symlink( path );
1258 HeapFree( GetProcessHeap(), 0, path );
1259
1260 if (link)
1261 {
1262 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
1263 HeapFree( GetProcessHeap(), 0, link );
1264 }
1265 else if (dosdev) /* look for device defaults */
1266 {
1267 if (!strcmpiW( name, auxW ))
1268 {
1269 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
1270 {
1271 memcpy( target, com1W, sizeof(com1W) );
1272 ret = sizeof(com1W)/sizeof(WCHAR);
1273 }
1274 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1275 return ret;
1276 }
1277 if (!strcmpiW( name, prnW ))
1278 {
1279 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
1280 {
1281 memcpy( target, lpt1W, sizeof(lpt1W) );
1282 ret = sizeof(lpt1W)/sizeof(WCHAR);
1283 }
1284 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1285 return ret;
1286 }
1287
1288 nt_buffer[0] = '\\';
1289 nt_buffer[1] = '?';
1290 nt_buffer[2] = '?';
1291 nt_buffer[3] = '\\';
1292 strcpyW( nt_buffer + 4, name );
1293 RtlInitUnicodeString( &nt_name, nt_buffer );
1294 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
1295 if (status) SetLastError( RtlNtStatusToDosError(status) );
1296 else
1297 {
1298 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
1299 RtlFreeAnsiString( &unix_name );
1300 }
1301 }
1302 done:
1303 if (ret)
1304 {
1305 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
1306 for (p = target; *p; p++) if (*p == '/') *p = '\\';
1307 }
1308
1309 return ret;
1310 }
1311 else /* return a list of all devices */
1312 {
1313 OBJECT_ATTRIBUTES attr;
1314 HANDLE handle;
1315 WCHAR *p = target;
1316 int i;
1317
1318 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1319 {
1320 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1321 return 0;
1322 }
1323
1324 /* FIXME: these should be NT symlinks too */
1325
1326 memcpy( p, auxW, sizeof(auxW) );
1327 p += sizeof(auxW) / sizeof(WCHAR);
1328 memcpy( p, nulW, sizeof(nulW) );
1329 p += sizeof(nulW) / sizeof(WCHAR);
1330 memcpy( p, prnW, sizeof(prnW) );
1331 p += sizeof(prnW) / sizeof(WCHAR);
1332
1333 strcpyW( nt_buffer, com0W );
1334 RtlInitUnicodeString( &nt_name, nt_buffer );
1335
1336 for (i = 1; i <= 9; i++)
1337 {
1338 nt_buffer[7] = '0' + i;
1339 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1340 {
1341 RtlFreeAnsiString( &unix_name );
1342 if (p + 5 >= target + bufsize)
1343 {
1344 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1345 return 0;
1346 }
1347 strcpyW( p, comW );
1348 p[3] = '0' + i;
1349 p[4] = 0;
1350 p += 5;
1351 }
1352 }
1353 strcpyW( nt_buffer + 4, lptW );
1354 for (i = 1; i <= 9; i++)
1355 {
1356 nt_buffer[7] = '0' + i;
1357 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1358 {
1359 RtlFreeAnsiString( &unix_name );
1360 if (p + 5 >= target + bufsize)
1361 {
1362 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1363 return 0;
1364 }
1365 strcpyW( p, lptW );
1366 p[3] = '0' + i;
1367 p[4] = 0;
1368 p += 5;
1369 }
1370 }
1371
1372 RtlInitUnicodeString( &nt_name, dosdevW );
1373 nt_name.Length -= sizeof(WCHAR); /* without trailing slash */
1374 attr.Length = sizeof(attr);
1375 attr.RootDirectory = 0;
1376 attr.ObjectName = &nt_name;
1377 attr.Attributes = OBJ_CASE_INSENSITIVE;
1378 attr.SecurityDescriptor = NULL;
1379 attr.SecurityQualityOfService = NULL;
1380 status = NtOpenDirectoryObject( &handle, FILE_LIST_DIRECTORY, &attr );
1381 if (!status)
1382 {
1383 char data[1024];
1384 DIRECTORY_BASIC_INFORMATION *info = (DIRECTORY_BASIC_INFORMATION *)data;
1385 ULONG ctx = 0, len;
1386
1387 while (!NtQueryDirectoryObject( handle, info, sizeof(data), 1, 0, &ctx, &len ))
1388 {
1389 if (p + info->ObjectName.Length/sizeof(WCHAR) + 1 >= target + bufsize)
1390 {
1391 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1392 NtClose( handle );
1393 return 0;
1394 }
1395 memcpy( p, info->ObjectName.Buffer, info->ObjectName.Length );
1396 p += info->ObjectName.Length/sizeof(WCHAR);
1397 *p++ = 0;
1398 }
1399 NtClose( handle );
1400 }
1401
1402 *p++ = 0; /* terminating null */
1403 return p - target;
1404 }
1405 }
1406
1407
1408 /***********************************************************************
1409 * QueryDosDeviceA (KERNEL32.@)
1410 *
1411 * returns array of strings terminated by \0, terminated by \0
1412 */
1413 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1414 {
1415 DWORD ret = 0, retW;
1416 WCHAR *devnameW = NULL;
1417 LPWSTR targetW;
1418
1419 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1420
1421 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1422 if (!targetW)
1423 {
1424 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1425 return 0;
1426 }
1427
1428 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1429
1430 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1431
1432 HeapFree(GetProcessHeap(), 0, targetW);
1433 return ret;
1434 }
1435
1436
1437 /***********************************************************************
1438 * GetLogicalDrives (KERNEL32.@)
1439 */
1440 DWORD WINAPI GetLogicalDrives(void)
1441 {
1442 const char *config_dir = wine_get_config_dir();
1443 struct stat st;
1444 char *buffer, *dev;
1445 DWORD ret = 0;
1446 int i;
1447
1448 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1449 {
1450 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1451 return 0;
1452 }
1453 strcpy( buffer, config_dir );
1454 strcat( buffer, "/dosdevices/a:" );
1455 dev = buffer + strlen(buffer) - 2;
1456
1457 for (i = 0; i < 26; i++)
1458 {
1459 *dev = 'a' + i;
1460 if (!stat( buffer, &st )) ret |= (1 << i);
1461 }
1462 HeapFree( GetProcessHeap(), 0, buffer );
1463 return ret;
1464 }
1465
1466
1467 /***********************************************************************
1468 * GetLogicalDriveStringsA (KERNEL32.@)
1469 */
1470 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1471 {
1472 DWORD drives = GetLogicalDrives();
1473 UINT drive, count;
1474
1475 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1476 if ((count * 4) + 1 > len) return count * 4 + 1;
1477
1478 for (drive = 0; drive < 26; drive++)
1479 {
1480 if (drives & (1 << drive))
1481 {
1482 *buffer++ = 'A' + drive;
1483 *buffer++ = ':';
1484 *buffer++ = '\\';
1485 *buffer++ = 0;
1486 }
1487 }
1488 *buffer = 0;
1489 return count * 4;
1490 }
1491
1492
1493 /***********************************************************************
1494 * GetLogicalDriveStringsW (KERNEL32.@)
1495 */
1496 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1497 {
1498 DWORD drives = GetLogicalDrives();
1499 UINT drive, count;
1500
1501 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1502 if ((count * 4) + 1 > len) return count * 4 + 1;
1503
1504 for (drive = 0; drive < 26; drive++)
1505 {
1506 if (drives & (1 << drive))
1507 {
1508 *buffer++ = 'A' + drive;
1509 *buffer++ = ':';
1510 *buffer++ = '\\';
1511 *buffer++ = 0;
1512 }
1513 }
1514 *buffer = 0;
1515 return count * 4;
1516 }
1517
1518
1519 /***********************************************************************
1520 * GetDriveTypeW (KERNEL32.@)
1521 *
1522 * Returns the type of the disk drive specified. If root is NULL the
1523 * root of the current directory is used.
1524 *
1525 * RETURNS
1526 *
1527 * Type of drive (from Win32 SDK):
1528 *
1529 * DRIVE_UNKNOWN unable to find out anything about the drive
1530 * DRIVE_NO_ROOT_DIR nonexistent root dir
1531 * DRIVE_REMOVABLE the disk can be removed from the machine
1532 * DRIVE_FIXED the disk cannot be removed from the machine
1533 * DRIVE_REMOTE network disk
1534 * DRIVE_CDROM CDROM drive
1535 * DRIVE_RAMDISK virtual disk in RAM
1536 */
1537 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1538 {
1539 FILE_FS_DEVICE_INFORMATION info;
1540 IO_STATUS_BLOCK io;
1541 NTSTATUS status;
1542 HANDLE handle;
1543 UINT ret;
1544
1545 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1546
1547 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1548 NtClose( handle );
1549 if (status != STATUS_SUCCESS)
1550 {
1551 SetLastError( RtlNtStatusToDosError(status) );
1552 ret = DRIVE_UNKNOWN;
1553 }
1554 else
1555 {
1556 switch (info.DeviceType)
1557 {
1558 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1559 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1560 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1561 case FILE_DEVICE_DISK_FILE_SYSTEM:
1562 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1563 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1564 else if ((ret = get_mountmgr_drive_type( root )) == DRIVE_UNKNOWN) ret = DRIVE_FIXED;
1565 break;
1566 default:
1567 ret = DRIVE_UNKNOWN;
1568 break;
1569 }
1570 }
1571 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1572 return ret;
1573 }
1574
1575
1576 /***********************************************************************
1577 * GetDriveTypeA (KERNEL32.@)
1578 *
1579 * See GetDriveTypeW.
1580 */
1581 UINT WINAPI GetDriveTypeA( LPCSTR root )
1582 {
1583 WCHAR *rootW = NULL;
1584
1585 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1586 return GetDriveTypeW( rootW );
1587 }
1588
1589
1590 /***********************************************************************
1591 * GetDiskFreeSpaceExW (KERNEL32.@)
1592 *
1593 * This function is used to acquire the size of the available and
1594 * total space on a logical volume.
1595 *
1596 * RETURNS
1597 *
1598 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1599 * detailed error information.
1600 *
1601 */
1602 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1603 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1604 {
1605 FILE_FS_SIZE_INFORMATION info;
1606 IO_STATUS_BLOCK io;
1607 NTSTATUS status;
1608 HANDLE handle;
1609 UINT units;
1610
1611 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1612
1613 if (!open_device_root( root, &handle )) return FALSE;
1614
1615 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1616 NtClose( handle );
1617 if (status != STATUS_SUCCESS)
1618 {
1619 SetLastError( RtlNtStatusToDosError(status) );
1620 return FALSE;
1621 }
1622
1623 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1624 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1625 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1626 /* FIXME: this one should take quotas into account */
1627 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1628 return TRUE;
1629 }
1630
1631
1632 /***********************************************************************
1633 * GetDiskFreeSpaceExA (KERNEL32.@)
1634 *
1635 * See GetDiskFreeSpaceExW.
1636 */
1637 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1638 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1639 {
1640 WCHAR *rootW = NULL;
1641
1642 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1643 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1644 }
1645
1646
1647 /***********************************************************************
1648 * GetDiskFreeSpaceW (KERNEL32.@)
1649 */
1650 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1651 LPDWORD sector_bytes, LPDWORD free_clusters,
1652 LPDWORD total_clusters )
1653 {
1654 FILE_FS_SIZE_INFORMATION info;
1655 IO_STATUS_BLOCK io;
1656 NTSTATUS status;
1657 HANDLE handle;
1658 UINT units;
1659
1660 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1661 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1662
1663 if (!open_device_root( root, &handle )) return FALSE;
1664
1665 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1666 NtClose( handle );
1667 if (status != STATUS_SUCCESS)
1668 {
1669 SetLastError( RtlNtStatusToDosError(status) );
1670 return FALSE;
1671 }
1672
1673 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1674
1675 if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
1676 /* cap the size and available at 2GB as per specs */
1677 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1678 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1679 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1680 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1681 }
1682 /* nr. of clusters is always <= 65335 */
1683 while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1684 info.TotalAllocationUnits.QuadPart /= 2;
1685 info.AvailableAllocationUnits.QuadPart /= 2;
1686 info.SectorsPerAllocationUnit *= 2;
1687 }
1688 }
1689
1690 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1691 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1692 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1693 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1694 return TRUE;
1695 }
1696
1697
1698 /***********************************************************************
1699 * GetDiskFreeSpaceA (KERNEL32.@)
1700 */
1701 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1702 LPDWORD sector_bytes, LPDWORD free_clusters,
1703 LPDWORD total_clusters )
1704 {
1705 WCHAR *rootW = NULL;
1706
1707 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1708 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1709 }
1710
1711 /***********************************************************************
1712 * GetVolumePathNameA (KERNEL32.@)
1713 */
1714 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1715 {
1716 BOOL ret;
1717 WCHAR *filenameW = NULL, *volumeW;
1718
1719 FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1720
1721 if (filename && !(filenameW = FILE_name_AtoW( filename, FALSE ))) return FALSE;
1722 if (!(volumeW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) ))) return FALSE;
1723
1724 if ((ret = GetVolumePathNameW( filenameW, volumeW, buflen )))
1725 FILE_name_WtoA( volumeW, -1, volumepathname, buflen );
1726
1727 HeapFree( GetProcessHeap(), 0, volumeW );
1728 return ret;
1729 }
1730
1731 /***********************************************************************
1732 * GetVolumePathNameW (KERNEL32.@)
1733 */
1734 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1735 {
1736 const WCHAR *p = filename;
1737
1738 FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1739
1740 if (p && tolowerW(p[0]) >= 'a' && tolowerW(p[0]) <= 'z' && p[1] ==':' && p[2] == '\\' && buflen >= 4)
1741 {
1742 volumepathname[0] = p[0];
1743 volumepathname[1] = ':';
1744 volumepathname[2] = '\\';
1745 volumepathname[3] = 0;
1746 return TRUE;
1747 }
1748 return FALSE;
1749 }
1750
1751 /***********************************************************************
1752 * GetVolumePathNamesForVolumeNameA (KERNEL32.@)
1753 */
1754 BOOL WINAPI GetVolumePathNamesForVolumeNameA(LPCSTR volumename, LPSTR volumepathname, DWORD buflen, PDWORD returnlen)
1755 {
1756 BOOL ret;
1757 WCHAR *volumenameW = NULL, *volumepathnameW;
1758
1759 if (volumename && !(volumenameW = FILE_name_AtoW( volumename, TRUE ))) return FALSE;
1760 if (!(volumepathnameW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) )))
1761 {
1762 HeapFree( GetProcessHeap(), 0, volumenameW );
1763 return FALSE;
1764 }
1765 if ((ret = GetVolumePathNamesForVolumeNameW( volumenameW, volumepathnameW, buflen, returnlen )))
1766 {
1767 char *path = volumepathname;
1768 const WCHAR *pathW = volumepathnameW;
1769
1770 while (*pathW)
1771 {
1772 int len = strlenW( pathW ) + 1;
1773 FILE_name_WtoA( pathW, len, path, buflen );
1774 buflen -= len;
1775 pathW += len;
1776 path += len;
1777 }
1778 path[0] = 0;
1779 }
1780 HeapFree( GetProcessHeap(), 0, volumenameW );
1781 HeapFree( GetProcessHeap(), 0, volumepathnameW );
1782 return ret;
1783 }
1784
1785 static MOUNTMGR_MOUNT_POINTS *query_mount_points( HANDLE mgr, MOUNTMGR_MOUNT_POINT *input, DWORD insize )
1786 {
1787 MOUNTMGR_MOUNT_POINTS *output;
1788 DWORD outsize = 1024;
1789
1790 for (;;)
1791 {
1792 if (!(output = HeapAlloc( GetProcessHeap(), 0, outsize )))
1793 {
1794 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1795 return NULL;
1796 }
1797 if (DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, insize, output, outsize, NULL, NULL )) break;
1798 outsize = output->Size;
1799 HeapFree( GetProcessHeap(), 0, output );
1800 if (GetLastError() != ERROR_MORE_DATA) return NULL;
1801 }
1802 return output;
1803 }
1804 /***********************************************************************
1805 * GetVolumePathNamesForVolumeNameW (KERNEL32.@)
1806 */
1807 BOOL WINAPI GetVolumePathNamesForVolumeNameW(LPCWSTR volumename, LPWSTR volumepathname, DWORD buflen, PDWORD returnlen)
1808 {
1809 static const WCHAR dosdevicesW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1810 HANDLE mgr;
1811 DWORD len, size;
1812 MOUNTMGR_MOUNT_POINT *spec;
1813 MOUNTMGR_MOUNT_POINTS *link, *target = NULL;
1814 WCHAR *name, *path;
1815 BOOL ret = FALSE;
1816 UINT i, j;
1817
1818 TRACE("%s, %p, %u, %p\n", debugstr_w(volumename), volumepathname, buflen, returnlen);
1819
1820 if (!volumename || (len = strlenW( volumename )) != 49)
1821 {
1822 SetLastError( ERROR_INVALID_NAME );
1823 return FALSE;
1824 }
1825 mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
1826 if (mgr == INVALID_HANDLE_VALUE) return FALSE;
1827
1828 size = sizeof(*spec) + sizeof(WCHAR) * (len - 1); /* remove trailing backslash */
1829 if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
1830 spec->SymbolicLinkNameOffset = sizeof(*spec);
1831 spec->SymbolicLinkNameLength = size - sizeof(*spec);
1832 name = (WCHAR *)((char *)spec + spec->SymbolicLinkNameOffset);
1833 memcpy( name, volumename, size - sizeof(*spec) );
1834 name[1] = '?'; /* map \\?\ to \??\ */
1835
1836 target = query_mount_points( mgr, spec, size );
1837 HeapFree( GetProcessHeap(), 0, spec );
1838 if (!target)
1839 {
1840 goto done;
1841 }
1842 if (!target->NumberOfMountPoints)
1843 {
1844 SetLastError( ERROR_FILE_NOT_FOUND );
1845 goto done;
1846 }
1847 len = 0;
1848 path = volumepathname;
1849 for (i = 0; i < target->NumberOfMountPoints; i++)
1850 {
1851 link = NULL;
1852 if (target->MountPoints[i].DeviceNameOffset)
1853 {
1854 const WCHAR *device = (const WCHAR *)((const char *)target + target->MountPoints[i].DeviceNameOffset);
1855 USHORT device_len = target->MountPoints[i].DeviceNameLength;
1856
1857 size = sizeof(*spec) + device_len;
1858 if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
1859 spec->DeviceNameOffset = sizeof(*spec);
1860 spec->DeviceNameLength = device_len;
1861 memcpy( (char *)spec + spec->DeviceNameOffset, device, device_len );
1862
1863 link = query_mount_points( mgr, spec, size );
1864 HeapFree( GetProcessHeap(), 0, spec );
1865 }
1866 else if (target->MountPoints[i].UniqueIdOffset)
1867 {
1868 const WCHAR *id = (const WCHAR *)((const char *)target + target->MountPoints[i].UniqueIdOffset);
1869 USHORT id_len = target->MountPoints[i].UniqueIdLength;
1870
1871 size = sizeof(*spec) + id_len;
1872 if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
1873 spec->UniqueIdOffset = sizeof(*spec);
1874 spec->UniqueIdLength = id_len;
1875 memcpy( (char *)spec + spec->UniqueIdOffset, id, id_len );
1876
1877 link = query_mount_points( mgr, spec, size );
1878 HeapFree( GetProcessHeap(), 0, spec );
1879 }
1880 if (!link) continue;
1881 for (j = 0; j < link->NumberOfMountPoints; j++)
1882 {
1883 const WCHAR *linkname;
1884
1885 if (!link->MountPoints[j].SymbolicLinkNameOffset) continue;
1886 linkname = (const WCHAR *)((const char *)link + link->MountPoints[j].SymbolicLinkNameOffset);
1887
1888 if (link->MountPoints[j].SymbolicLinkNameLength == sizeof(dosdevicesW) + 2 * sizeof(WCHAR) &&
1889 !memicmpW( linkname, dosdevicesW, sizeof(dosdevicesW) / sizeof(WCHAR) ))
1890 {
1891 len += 4;
1892 if (volumepathname && len < buflen)
1893 {
1894 path[0] = linkname[sizeof(dosdevicesW) / sizeof(WCHAR)];
1895 path[1] = ':';
1896 path[2] = '\\';
1897 path[3] = 0;
1898 path += 4;
1899 }
1900 }
1901 }
1902 HeapFree( GetProcessHeap(), 0, link );
1903 }
1904 if (buflen <= len) SetLastError( ERROR_MORE_DATA );
1905 else if (volumepathname)
1906 {
1907 volumepathname[len] = 0;
1908 ret = TRUE;
1909 }
1910 if (returnlen) *returnlen = len + 1;
1911
1912 done:
1913 HeapFree( GetProcessHeap(), 0, target );
1914 CloseHandle( mgr );
1915 return ret;
1916 }
1917
1918 /***********************************************************************
1919 * FindFirstVolumeA (KERNEL32.@)
1920 */
1921 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1922 {
1923 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1924 HANDLE handle = FindFirstVolumeW( buffer, len );
1925
1926 if (handle != INVALID_HANDLE_VALUE)
1927 {
1928 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1929 {
1930 FindVolumeClose( handle );
1931 handle = INVALID_HANDLE_VALUE;
1932 }
1933 }
1934 HeapFree( GetProcessHeap(), 0, buffer );
1935 return handle;
1936 }
1937
1938 /***********************************************************************
1939 * FindFirstVolumeW (KERNEL32.@)
1940 */
1941 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1942 {
1943 DWORD size = 1024;
1944 HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1945 NULL, OPEN_EXISTING, 0, 0 );
1946 if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1947
1948 for (;;)
1949 {
1950 MOUNTMGR_MOUNT_POINT input;
1951 MOUNTMGR_MOUNT_POINTS *output;
1952
1953 if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1954 {
1955 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1956 break;
1957 }
1958 memset( &input, 0, sizeof(input) );
1959
1960 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1961 output, size, NULL, NULL ))
1962 {
1963 if (GetLastError() != ERROR_MORE_DATA) break;
1964 size = output->Size;
1965 HeapFree( GetProcessHeap(), 0, output );
1966 continue;
1967 }
1968 CloseHandle( mgr );
1969 /* abuse the Size field to store the current index */
1970 output->Size = 0;
1971 if (!FindNextVolumeW( output, volume, len ))
1972 {
1973 HeapFree( GetProcessHeap(), 0, output );
1974 return INVALID_HANDLE_VALUE;
1975 }
1976 return output;
1977 }
1978 CloseHandle( mgr );
1979 return INVALID_HANDLE_VALUE;
1980 }
1981
1982 /***********************************************************************
1983 * FindNextVolumeA (KERNEL32.@)
1984 */
1985 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1986 {
1987 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1988 BOOL ret;
1989
1990 if ((ret = FindNextVolumeW( handle, buffer, len )))
1991 {
1992 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1993 }
1994 HeapFree( GetProcessHeap(), 0, buffer );
1995 return ret;
1996 }
1997
1998 /***********************************************************************
1999 * FindNextVolumeW (KERNEL32.@)
2000 */
2001 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
2002 {
2003 MOUNTMGR_MOUNT_POINTS *data = handle;
2004
2005 while (data->Size < data->NumberOfMountPoints)
2006 {
2007 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
2008 WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
2009 DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
2010 data->Size++;
2011 /* skip non-volumes */
2012 if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
2013 if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
2014 {
2015 SetLastError( ERROR_FILENAME_EXCED_RANGE );
2016 return FALSE;
2017 }
2018 memcpy( volume, link, size );
2019 volume[1] = '\\'; /* map \??\ to \\?\ */
2020 volume[size / sizeof(WCHAR)] = '\\'; /* Windows appends a backslash */
2021 volume[size / sizeof(WCHAR) + 1] = 0;
2022 TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
2023 return TRUE;
2024 }
2025 SetLastError( ERROR_NO_MORE_FILES );
2026 return FALSE;
2027 }
2028
2029 /***********************************************************************
2030 * FindVolumeClose (KERNEL32.@)
2031 */
2032 BOOL WINAPI FindVolumeClose(HANDLE handle)
2033 {
2034 return HeapFree( GetProcessHeap(), 0, handle );
2035 }
2036
2037 /***********************************************************************
2038 * FindFirstVolumeMountPointA (KERNEL32.@)
2039 */
2040 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
2041 {
2042 FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
2043 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
2044 return INVALID_HANDLE_VALUE;
2045 }
2046
2047 /***********************************************************************
2048 * FindFirstVolumeMountPointW (KERNEL32.@)
2049 */
2050 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
2051 {
2052 FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
2053 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
2054 return INVALID_HANDLE_VALUE;
2055 }
2056
2057 /***********************************************************************
2058 * FindVolumeMountPointClose (KERNEL32.@)
2059 */
2060 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
2061 {
2062 FIXME("(%p), stub!\n", h);
2063 return FALSE;
2064 }
Maarten's multimedia branch