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push e1d8a1293d44015bb0894687d02c5c53339996f7
[wine/hacks.git] / dlls / kernel32 / volume.c
blob0f4161c6ec3e39c381dc611d51902905d1de598f
1 /*
2 * Volume management functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 1996, 2004 Alexandre Julliard
6 * Copyright 1999 Petr Tomasek
7 * Copyright 2000 Andreas Mohr
8 * Copyright 2003 Eric Pouech
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "winnls.h"
37 #include "winternl.h"
38 #include "winioctl.h"
39 #include "ntddcdrm.h"
40 #define WINE_MOUNTMGR_EXTENSIONS
41 #include "ddk/mountmgr.h"
42 #include "kernel_private.h"
43 #include "wine/library.h"
44 #include "wine/unicode.h"
45 #include "wine/debug.h"
46
47 WINE_DEFAULT_DEBUG_CHANNEL(volume);
48
49 #define SUPERBLOCK_SIZE 2048
50 #define SYMBOLIC_LINK_QUERY 0x0001
51
52 #define CDFRAMES_PERSEC 75
53 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
54 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
55 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
56
57 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
58 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
59
60 enum fs_type
61 {
62 FS_ERROR, /* error accessing the device */
63 FS_UNKNOWN, /* unknown file system */
64 FS_FAT1216,
65 FS_FAT32,
66 FS_ISO9660
67 };
68
69 /* read a Unix symlink; returned buffer must be freed by caller */
70 static char *read_symlink( const char *path )
71 {
72 char *buffer;
73 int ret, size = 128;
74
75 for (;;)
76 {
77 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
78 {
79 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
80 return 0;
81 }
82 ret = readlink( path, buffer, size );
83 if (ret == -1)
84 {
85 FILE_SetDosError();
86 HeapFree( GetProcessHeap(), 0, buffer );
87 return 0;
88 }
89 if (ret != size)
90 {
91 buffer[ret] = 0;
92 return buffer;
93 }
94 HeapFree( GetProcessHeap(), 0, buffer );
95 size *= 2;
96 }
97 }
98
99 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
100 static char *get_dos_device_path( LPCWSTR name )
101 {
102 const char *config_dir = wine_get_config_dir();
103 char *buffer, *dev;
104 int i;
105
106 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
107 strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
108 {
109 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
110 return NULL;
111 }
112 strcpy( buffer, config_dir );
113 strcat( buffer, "/dosdevices/" );
114 dev = buffer + strlen(buffer);
115 /* no codepage conversion, DOS device names are ASCII anyway */
116 for (i = 0; i < 5; i++)
117 if (!(dev[i] = (char)tolowerW(name[i]))) break;
118 dev[5] = 0;
119 return buffer;
120 }
121
122 /* read the contents of an NT symlink object */
123 static NTSTATUS read_nt_symlink( const WCHAR *name, WCHAR *target, DWORD size )
124 {
125 NTSTATUS status;
126 OBJECT_ATTRIBUTES attr;
127 UNICODE_STRING nameW;
128 HANDLE handle;
129
130 attr.Length = sizeof(attr);
131 attr.RootDirectory = 0;
132 attr.Attributes = OBJ_CASE_INSENSITIVE;
133 attr.ObjectName = &nameW;
134 attr.SecurityDescriptor = NULL;
135 attr.SecurityQualityOfService = NULL;
136 RtlInitUnicodeString( &nameW, name );
137
138 if (!(status = NtOpenSymbolicLinkObject( &handle, SYMBOLIC_LINK_QUERY, &attr )))
139 {
140 UNICODE_STRING targetW;
141 targetW.Buffer = target;
142 targetW.MaximumLength = (size - 1) * sizeof(WCHAR);
143 status = NtQuerySymbolicLinkObject( handle, &targetW, NULL );
144 if (!status) target[targetW.Length / sizeof(WCHAR)] = 0;
145 NtClose( handle );
146 }
147 return status;
148 }
149
150 /* open a handle to a device root */
151 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
152 {
153 static const WCHAR default_rootW[] = {'\\',0};
154 UNICODE_STRING nt_name;
155 OBJECT_ATTRIBUTES attr;
156 IO_STATUS_BLOCK io;
157 NTSTATUS status;
158
159 if (!root) root = default_rootW;
160 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
161 {
162 SetLastError( ERROR_PATH_NOT_FOUND );
163 return FALSE;
164 }
165 attr.Length = sizeof(attr);
166 attr.RootDirectory = 0;
167 attr.Attributes = OBJ_CASE_INSENSITIVE;
168 attr.ObjectName = &nt_name;
169 attr.SecurityDescriptor = NULL;
170 attr.SecurityQualityOfService = NULL;
171
172 status = NtOpenFile( handle, 0, &attr, &io, 0,
173 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
174 RtlFreeUnicodeString( &nt_name );
175 if (status != STATUS_SUCCESS)
176 {
177 SetLastError( RtlNtStatusToDosError(status) );
178 return FALSE;
179 }
180 return TRUE;
181 }
182
183 /* query the type of a drive from the mount manager */
184 static DWORD get_mountmgr_drive_type( LPCWSTR root )
185 {
186 HANDLE mgr;
187 struct mountmgr_unix_drive data;
188
189 memset( &data, 0, sizeof(data) );
190 if (root) data.letter = root[0];
191 else
192 {
193 WCHAR curdir[MAX_PATH];
194 GetCurrentDirectoryW( MAX_PATH, curdir );
195 if (curdir[1] != ':' || curdir[2] != '\\') return DRIVE_UNKNOWN;
196 data.letter = curdir[0];
197 }
198
199 mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ,
200 FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
201 if (mgr == INVALID_HANDLE_VALUE) return DRIVE_UNKNOWN;
202
203 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, &data, sizeof(data), &data,
204 sizeof(data), NULL, NULL ) && GetLastError() != ERROR_MORE_DATA)
205 data.type = DRIVE_UNKNOWN;
206
207 CloseHandle( mgr );
208 return data.type;
209 }
210
211 /* get the label by reading it from a file at the root of the filesystem */
212 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
213 {
214 HANDLE handle;
215 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
216
217 labelW[0] = device[4];
218 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
219 OPEN_EXISTING, 0, 0 );
220 if (handle != INVALID_HANDLE_VALUE)
221 {
222 char buffer[256], *p;
223 DWORD size;
224
225 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
226 CloseHandle( handle );
227 p = buffer + size;
228 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
229 *p = 0;
230 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
231 label[len-1] = 0;
232 }
233 else label[0] = 0;
234 }
235
236 /* get the serial number by reading it from a file at the root of the filesystem */
237 static DWORD get_filesystem_serial( const WCHAR *device )
238 {
239 HANDLE handle;
240 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
241
242 serialW[0] = device[4];
243 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
244 OPEN_EXISTING, 0, 0 );
245 if (handle != INVALID_HANDLE_VALUE)
246 {
247 char buffer[32];
248 DWORD size;
249
250 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
251 CloseHandle( handle );
252 buffer[size] = 0;
253 return strtoul( buffer, NULL, 16 );
254 }
255 else return 0;
256 }
257
258
259 /******************************************************************
260 * VOLUME_FindCdRomDataBestVoldesc
261 */
262 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
263 {
264 BYTE cur_vd_type, max_vd_type = 0;
265 BYTE buffer[0x800];
266 DWORD size, offs, best_offs = 0, extra_offs = 0;
267
268 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
269 {
270 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
271 * the volume label is displaced forward by 8
272 */
273 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
274 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
275 if (size != sizeof(buffer)) break;
276 /* check for non-ISO9660 signature */
277 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
278 cur_vd_type = buffer[extra_offs];
279 if (cur_vd_type == 0xff) /* voldesc set terminator */
280 break;
281 if (cur_vd_type > max_vd_type)
282 {
283 max_vd_type = cur_vd_type;
284 best_offs = offs + extra_offs;
285 }
286 }
287 return best_offs;
288 }
289
290
291 /***********************************************************************
292 * VOLUME_ReadFATSuperblock
293 */
294 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
295 {
296 DWORD size;
297
298 /* try a fixed disk, with a FAT partition */
299 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
300 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
301 {
302 if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN; /* not a real device */
303 return FS_ERROR;
304 }
305
306 if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
307
308 /* FIXME: do really all FAT have their name beginning with
309 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
310 */
311 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
312 {
313 /* guess which type of FAT we have */
314 int reasonable;
315 unsigned int sectors,
316 sect_per_fat,
317 total_sectors,
318 num_boot_sectors,
319 num_fats,
320 num_root_dir_ents,
321 bytes_per_sector,
322 sectors_per_cluster,
323 nclust;
324 sect_per_fat = GETWORD(buff, 0x16);
325 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
326 total_sectors = GETWORD(buff, 0x13);
327 if (!total_sectors)
328 total_sectors = GETLONG(buff, 0x20);
329 num_boot_sectors = GETWORD(buff, 0x0e);
330 num_fats = buff[0x10];
331 num_root_dir_ents = GETWORD(buff, 0x11);
332 bytes_per_sector = GETWORD(buff, 0x0b);
333 sectors_per_cluster = buff[0x0d];
334 /* check if the parameters are reasonable and will not cause
335 * arithmetic errors in the calculation */
336 reasonable = num_boot_sectors < total_sectors &&
337 num_fats < 16 &&
338 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
339 sectors_per_cluster > 1;
340 if (!reasonable) return FS_UNKNOWN;
341 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
342 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
343 nclust = sectors / sectors_per_cluster;
344 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
345 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
346 if (nclust < 65525)
347 {
348 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
349 !memcmp(buff+0x36, "FAT", 3))
350 return FS_FAT1216;
351 }
352 }
353 return FS_UNKNOWN;
354 }
355
356
357 /***********************************************************************
358 * VOLUME_ReadCDSuperblock
359 */
360 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
361 {
362 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
363
364 if (!offs) return FS_UNKNOWN;
365
366 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
367 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
368 size != SUPERBLOCK_SIZE)
369 return FS_ERROR;
370
371 /* check for iso9660 present */
372 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
373 return FS_UNKNOWN;
374 }
375
376
377 /**************************************************************************
378 * VOLUME_GetSuperblockLabel
379 */
380 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
381 WCHAR *label, DWORD len )
382 {
383 const BYTE *label_ptr = NULL;
384 DWORD label_len;
385
386 switch(type)
387 {
388 case FS_ERROR:
389 label_len = 0;
390 break;
391 case FS_UNKNOWN:
392 get_filesystem_label( device, label, len );
393 return;
394 case FS_FAT1216:
395 label_ptr = superblock + 0x2b;
396 label_len = 11;
397 break;
398 case FS_FAT32:
399 label_ptr = superblock + 0x47;
400 label_len = 11;
401 break;
402 case FS_ISO9660:
403 {
404 BYTE ver = superblock[0x5a];
405
406 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
407 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
408 { /* yippee, unicode */
409 unsigned int i;
410
411 if (len > 17) len = 17;
412 for (i = 0; i < len-1; i++)
413 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
414 label[i] = 0;
415 while (i && label[i-1] == ' ') label[--i] = 0;
416 return;
417 }
418 label_ptr = superblock + 40;
419 label_len = 32;
420 break;
421 }
422 }
423 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
424 &label_len, (LPCSTR)label_ptr, label_len );
425 label_len /= sizeof(WCHAR);
426 label[label_len] = 0;
427 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
428 }
429
430
431 /**************************************************************************
432 * VOLUME_GetSuperblockSerial
433 */
434 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
435 {
436 switch(type)
437 {
438 case FS_ERROR:
439 break;
440 case FS_UNKNOWN:
441 return get_filesystem_serial( device );
442 case FS_FAT1216:
443 return GETLONG( superblock, 0x27 );
444 case FS_FAT32:
445 return GETLONG( superblock, 0x33 );
446 case FS_ISO9660:
447 {
448 BYTE sum[4];
449 int i;
450
451 sum[0] = sum[1] = sum[2] = sum[3] = 0;
452 for (i = 0; i < 2048; i += 4)
453 {
454 /* DON'T optimize this into DWORD !! (breaks overflow) */
455 sum[0] += superblock[i+0];
456 sum[1] += superblock[i+1];
457 sum[2] += superblock[i+2];
458 sum[3] += superblock[i+3];
459 }
460 /*
461 * OK, another braindead one... argh. Just believe it.
462 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
463 * It's true and nobody will ever be able to change it.
464 */
465 if (GetVersion() & 0x80000000)
466 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
467 else
468 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
469 }
470 }
471 return 0;
472 }
473
474
475 /**************************************************************************
476 * VOLUME_GetAudioCDSerial
477 */
478 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
479 {
480 DWORD serial = 0;
481 int i;
482
483 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
484 serial += ((toc->TrackData[i].Address[1] << 16) |
485 (toc->TrackData[i].Address[2] << 8) |
486 toc->TrackData[i].Address[3]);
487
488 /*
489 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
490 * frames.
491 * There it is collected for correcting the serial when there are less than
492 * 3 tracks.
493 */
494 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
495 {
496 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
497 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
498 serial += dwEnd - dwStart;
499 }
500 return serial;
501 }
502
503
504 /***********************************************************************
505 * GetVolumeInformationW (KERNEL32.@)
506 */
507 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
508 DWORD *serial, DWORD *filename_len, DWORD *flags,
509 LPWSTR fsname, DWORD fsname_len )
510 {
511 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
512 static const WCHAR fatW[] = {'F','A','T',0};
513 static const WCHAR fat32W[] = {'F','A','T','3','2',0};
514 static const WCHAR ntfsW[] = {'N','T','F','S',0};
515 static const WCHAR cdfsW[] = {'C','D','F','S',0};
516
517 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
518 HANDLE handle;
519 enum fs_type type = FS_UNKNOWN;
520
521 if (!root)
522 {
523 WCHAR path[MAX_PATH];
524 GetCurrentDirectoryW( MAX_PATH, path );
525 device[4] = path[0];
526 }
527 else
528 {
529 if (!root[0] || root[1] != ':' || root[lstrlenW(root)-1] != '\\' )
530 {
531 SetLastError( ERROR_INVALID_NAME );
532 return FALSE;
533 }
534 device[4] = root[0];
535 }
536
537 /* try to open the device */
538
539 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
540 NULL, OPEN_EXISTING, 0, 0 );
541 if (handle != INVALID_HANDLE_VALUE)
542 {
543 BYTE superblock[SUPERBLOCK_SIZE];
544 CDROM_TOC toc;
545 DWORD br;
546
547 /* check for audio CD */
548 /* FIXME: we only check the first track for now */
549 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
550 {
551 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
552 {
553 TRACE( "%s: found audio CD\n", debugstr_w(device) );
554 if (label) lstrcpynW( label, audiocdW, label_len );
555 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
556 CloseHandle( handle );
557 type = FS_ISO9660;
558 goto fill_fs_info;
559 }
560 type = VOLUME_ReadCDSuperblock( handle, superblock );
561 }
562 else
563 {
564 type = VOLUME_ReadFATSuperblock( handle, superblock );
565 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
566 }
567 CloseHandle( handle );
568 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
569 if (type == FS_ERROR) return FALSE;
570
571 if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
572 if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
573 goto fill_fs_info;
574 }
575 else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
576
577 /* we couldn't open the device, fallback to default strategy */
578
579 switch(GetDriveTypeW( root ))
580 {
581 case DRIVE_UNKNOWN:
582 case DRIVE_NO_ROOT_DIR:
583 SetLastError( ERROR_NOT_READY );
584 return FALSE;
585 case DRIVE_REMOVABLE:
586 case DRIVE_FIXED:
587 case DRIVE_REMOTE:
588 case DRIVE_RAMDISK:
589 type = FS_UNKNOWN;
590 break;
591 case DRIVE_CDROM:
592 type = FS_ISO9660;
593 break;
594 }
595
596 if (label && label_len) get_filesystem_label( device, label, label_len );
597 if (serial) *serial = get_filesystem_serial( device );
598
599 fill_fs_info: /* now fill in the information that depends on the file system type */
600
601 switch(type)
602 {
603 case FS_ISO9660:
604 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
605 if (filename_len) *filename_len = 221;
606 if (flags) *flags = FILE_READ_ONLY_VOLUME;
607 break;
608 case FS_FAT1216:
609 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
610 case FS_FAT32:
611 if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
612 if (filename_len) *filename_len = 255;
613 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
614 break;
615 default:
616 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
617 if (filename_len) *filename_len = 255;
618 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
619 break;
620 }
621 return TRUE;
622 }
623
624
625 /***********************************************************************
626 * GetVolumeInformationA (KERNEL32.@)
627 */
628 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
629 DWORD label_len, DWORD *serial,
630 DWORD *filename_len, DWORD *flags,
631 LPSTR fsname, DWORD fsname_len )
632 {
633 WCHAR *rootW = NULL;
634 LPWSTR labelW, fsnameW;
635 BOOL ret;
636
637 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
638
639 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
640 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
641
642 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
643 filename_len, flags, fsnameW, fsname_len)))
644 {
645 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
646 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
647 }
648
649 HeapFree( GetProcessHeap(), 0, labelW );
650 HeapFree( GetProcessHeap(), 0, fsnameW );
651 return ret;
652 }
653
654
655
656 /***********************************************************************
657 * SetVolumeLabelW (KERNEL32.@)
658 */
659 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
660 {
661 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
662 HANDLE handle;
663 enum fs_type type = FS_UNKNOWN;
664
665 if (!root)
666 {
667 WCHAR path[MAX_PATH];
668 GetCurrentDirectoryW( MAX_PATH, path );
669 device[4] = path[0];
670 }
671 else
672 {
673 if (!root[0] || root[1] != ':')
674 {
675 SetLastError( ERROR_INVALID_NAME );
676 return FALSE;
677 }
678 device[4] = root[0];
679 }
680
681 /* try to open the device */
682
683 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
684 NULL, OPEN_EXISTING, 0, 0 );
685 if (handle != INVALID_HANDLE_VALUE)
686 {
687 BYTE superblock[SUPERBLOCK_SIZE];
688
689 type = VOLUME_ReadFATSuperblock( handle, superblock );
690 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
691 CloseHandle( handle );
692 if (type != FS_UNKNOWN)
693 {
694 /* we can't set the label on FAT or CDROM file systems */
695 TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
696 SetLastError( ERROR_ACCESS_DENIED );
697 return FALSE;
698 }
699 }
700 else
701 {
702 TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
703 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
704 }
705
706 /* we couldn't open the device, fallback to default strategy */
707
708 switch(GetDriveTypeW( root ))
709 {
710 case DRIVE_UNKNOWN:
711 case DRIVE_NO_ROOT_DIR:
712 SetLastError( ERROR_NOT_READY );
713 break;
714 case DRIVE_REMOVABLE:
715 case DRIVE_FIXED:
716 {
717 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
718
719 labelW[0] = device[4];
720
721 if (!label[0]) /* delete label file when setting an empty label */
722 return DeleteFileW( labelW ) || GetLastError() == ERROR_FILE_NOT_FOUND;
723
724 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
725 CREATE_ALWAYS, 0, 0 );
726 if (handle != INVALID_HANDLE_VALUE)
727 {
728 char buffer[64];
729 DWORD size;
730
731 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer)-1, NULL, NULL ))
732 buffer[sizeof(buffer)-2] = 0;
733 strcat( buffer, "\n" );
734 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
735 CloseHandle( handle );
736 return TRUE;
737 }
738 break;
739 }
740 case DRIVE_REMOTE:
741 case DRIVE_RAMDISK:
742 case DRIVE_CDROM:
743 SetLastError( ERROR_ACCESS_DENIED );
744 break;
745 }
746 return FALSE;
747 }
748
749 /***********************************************************************
750 * SetVolumeLabelA (KERNEL32.@)
751 */
752 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
753 {
754 WCHAR *rootW = NULL, *volnameW = NULL;
755 BOOL ret;
756
757 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
758 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
759 ret = SetVolumeLabelW( rootW, volnameW );
760 HeapFree( GetProcessHeap(), 0, volnameW );
761 return ret;
762 }
763
764
765 /***********************************************************************
766 * GetVolumeNameForVolumeMountPointA (KERNEL32.@)
767 */
768 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
769 {
770 BOOL ret;
771 WCHAR volumeW[50], *pathW = NULL;
772 DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
773
774 TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
775
776 if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
777 return FALSE;
778
779 if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
780 FILE_name_WtoA( volumeW, -1, volume, len );
781
782 HeapFree( GetProcessHeap(), 0, pathW );
783 return ret;
784 }
785
786 /***********************************************************************
787 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
788 */
789 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
790 {
791 static const WCHAR prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
792 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',0};
793 static const WCHAR trailingW[] = {'\\',0};
794
795 MOUNTMGR_MOUNT_POINT *input = NULL, *o1;
796 MOUNTMGR_MOUNT_POINTS *output = NULL;
797 WCHAR *p;
798 char *r;
799 DWORD i, i_size = 1024, o_size = 1024;
800 WCHAR nonpersist_name[200];
801 WCHAR symlink_name[MAX_PATH];
802 NTSTATUS status;
803 HANDLE mgr = INVALID_HANDLE_VALUE;
804 BOOL ret = FALSE;
805
806 TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
807 if (path[lstrlenW(path)-1] != '\\')
808 {
809 SetLastError( ERROR_INVALID_NAME );
810 return FALSE;
811 }
812
813 if (size < 50)
814 {
815 SetLastError( ERROR_FILENAME_EXCED_RANGE );
816 return FALSE;
817 }
818 /* if length of input is > 3 then it must be a mounted folder */
819 if (lstrlenW(path) > 3)
820 {
821 FIXME("Mounted Folders are not yet supported\n");
822 SetLastError( ERROR_NOT_A_REPARSE_POINT );
823 return FALSE;
824 }
825
826 mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ,
827 NULL, OPEN_EXISTING, 0, 0 );
828 if (mgr == INVALID_HANDLE_VALUE) return FALSE;
829
830 if (!(input = HeapAlloc( GetProcessHeap(), 0, i_size )))
831 {
832 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
833 goto err_ret;
834 }
835
836 if (!(output = HeapAlloc( GetProcessHeap(), 0, o_size )))
837 {
838 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
839 goto err_ret;
840 }
841
842 /* construct the symlink name as "\DosDevices\C:" */
843 lstrcpyW( symlink_name, prefixW );
844 lstrcatW( symlink_name, path );
845 symlink_name[lstrlenW(symlink_name)-1] = 0;
846
847 /* Take the mount point and get the "nonpersistent name" */
848 /* We will then take that and get the volume name */
849 status = read_nt_symlink( symlink_name, nonpersist_name,
850 sizeof(nonpersist_name)/sizeof(WCHAR) );
851 TRACE("read_nt_symlink got stat=%x, for %s, got <%s>\n", status,
852 debugstr_w(symlink_name), debugstr_w(nonpersist_name));
853 if (status != STATUS_SUCCESS)
854 {
855 SetLastError( ERROR_FILE_NOT_FOUND );
856 goto err_ret;
857 }
858
859 /* Now take the "nonpersistent name" and ask the mountmgr */
860 /* to give us all the mount points. One of them will be */
861 /* the volume name (format of \??\Volume{). */
862 memset( input, 0, sizeof(*input) ); /* clear all input parameters */
863 input->DeviceNameOffset = sizeof(*input);
864 input->DeviceNameLength = lstrlenW( nonpersist_name) * sizeof(WCHAR);
865 memcpy( input + 1, nonpersist_name, input->DeviceNameLength );
866
867 output->Size = o_size;
868
869 /* now get the true volume name from the mountmgr */
870 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, i_size,
871 output, o_size, NULL, NULL ))
872 goto err_ret;
873
874 /* Verify and return the data, note string is not null terminated */
875 TRACE("found %d matching mount points\n", output->NumberOfMountPoints);
876 if (output->NumberOfMountPoints < 1)
877 {
878 SetLastError( ERROR_NO_VOLUME_ID );
879 goto err_ret;
880 }
881 o1 = &output->MountPoints[0];
882
883 /* look for the volume name in returned values */
884 for(i=0;i<output->NumberOfMountPoints;i++)
885 {
886 p = (WCHAR*)((char *)output + o1->SymbolicLinkNameOffset);
887 r = (char *)output + o1->UniqueIdOffset;
888 TRACE("found symlink=%s, unique=%s, devname=%s\n",
889 debugstr_wn(p, o1->SymbolicLinkNameLength/sizeof(WCHAR)),
890 debugstr_an(r, o1->UniqueIdLength),
891 debugstr_wn((WCHAR*)((char *)output + o1->DeviceNameOffset),
892 o1->DeviceNameLength/sizeof(WCHAR)));
893
894 if (!strncmpW( p, volumeW, (sizeof(volumeW)-1)/sizeof(WCHAR) ))
895 {
896 /* is there space in the return variable ?? */
897 if ((o1->SymbolicLinkNameLength/sizeof(WCHAR))+2 > size)
898 {
899 SetLastError( ERROR_FILENAME_EXCED_RANGE );
900 goto err_ret;
901 }
902 memcpy( volume, p, o1->SymbolicLinkNameLength );
903 volume[o1->SymbolicLinkNameLength / sizeof(WCHAR)] = 0;
904 lstrcatW( volume, trailingW );
905 /* change second char from '?' to '\' */
906 volume[1] = '\\';
907 ret = TRUE;
908 break;
909 }
910 o1++;
911 }
912
913 err_ret:
914 HeapFree( GetProcessHeap(), 0, input );
915 HeapFree( GetProcessHeap(), 0, output );
916 CloseHandle( mgr );
917 return ret;
918 }
919
920 /***********************************************************************
921 * DefineDosDeviceW (KERNEL32.@)
922 */
923 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
924 {
925 DWORD len, dosdev;
926 BOOL ret = FALSE;
927 char *path = NULL, *target, *p;
928
929 TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
930
931 if (!(flags & DDD_REMOVE_DEFINITION))
932 {
933 if (!(flags & DDD_RAW_TARGET_PATH))
934 {
935 FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
936 flags, debugstr_w(devname), debugstr_w(targetpath) );
937 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
938 return FALSE;
939 }
940
941 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
942 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
943 {
944 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
945 for (p = target; *p; p++) if (*p == '\\') *p = '/';
946 }
947 else
948 {
949 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
950 return FALSE;
951 }
952 }
953 else target = NULL;
954
955 /* first check for a DOS device */
956
957 if ((dosdev = RtlIsDosDeviceName_U( devname )))
958 {
959 WCHAR name[5];
960
961 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
962 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
963 path = get_dos_device_path( name );
964 }
965 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
966 {
967 path = get_dos_device_path( devname );
968 }
969 else SetLastError( ERROR_FILE_NOT_FOUND );
970
971 if (path)
972 {
973 if (target)
974 {
975 TRACE( "creating symlink %s -> %s\n", path, target );
976 unlink( path );
977 if (!symlink( target, path )) ret = TRUE;
978 else FILE_SetDosError();
979 }
980 else
981 {
982 TRACE( "removing symlink %s\n", path );
983 if (!unlink( path )) ret = TRUE;
984 else FILE_SetDosError();
985 }
986 HeapFree( GetProcessHeap(), 0, path );
987 }
988 HeapFree( GetProcessHeap(), 0, target );
989 return ret;
990 }
991
992
993 /***********************************************************************
994 * DefineDosDeviceA (KERNEL32.@)
995 */
996 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
997 {
998 WCHAR *devW, *targetW = NULL;
999 BOOL ret;
1000
1001 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
1002 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
1003 ret = DefineDosDeviceW(flags, devW, targetW);
1004 HeapFree( GetProcessHeap(), 0, targetW );
1005 return ret;
1006 }
1007
1008
1009 /***********************************************************************
1010 * QueryDosDeviceW (KERNEL32.@)
1011 *
1012 * returns array of strings terminated by \0, terminated by \0
1013 */
1014 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
1015 {
1016 static const WCHAR auxW[] = {'A','U','X',0};
1017 static const WCHAR nulW[] = {'N','U','L',0};
1018 static const WCHAR prnW[] = {'P','R','N',0};
1019 static const WCHAR comW[] = {'C','O','M',0};
1020 static const WCHAR lptW[] = {'L','P','T',0};
1021 static const WCHAR rootW[] = {'A',':','\\',0};
1022 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
1023 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
1024 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
1025 static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','A',':',0};
1026
1027 UNICODE_STRING nt_name;
1028 ANSI_STRING unix_name;
1029 WCHAR nt_buffer[10];
1030 NTSTATUS status;
1031
1032 if (!bufsize)
1033 {
1034 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1035 return 0;
1036 }
1037
1038 if (devname)
1039 {
1040 WCHAR *p, name[5];
1041 char *path, *link;
1042 DWORD dosdev, ret = 0;
1043
1044 if ((dosdev = RtlIsDosDeviceName_U( devname )))
1045 {
1046 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1047 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1048 }
1049 else if (devname[0] && devname[1] == ':' && !devname[2])
1050 {
1051 /* FIXME: should do this for all devices, not just drives */
1052 NTSTATUS status;
1053 WCHAR buffer[sizeof(driveW)/sizeof(WCHAR)];
1054
1055 memcpy( buffer, driveW, sizeof(driveW) );
1056 buffer[12] = devname[0];
1057 if ((status = read_nt_symlink( buffer, target, bufsize )))
1058 {
1059 SetLastError( RtlNtStatusToDosError(status) );
1060 return 0;
1061 }
1062 ret = strlenW( target ) + 1;
1063 goto done;
1064 }
1065 else
1066 {
1067 SetLastError( ERROR_BAD_PATHNAME );
1068 return 0;
1069 }
1070
1071 if (!(path = get_dos_device_path( name ))) return 0;
1072 link = read_symlink( path );
1073 HeapFree( GetProcessHeap(), 0, path );
1074
1075 if (link)
1076 {
1077 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
1078 HeapFree( GetProcessHeap(), 0, link );
1079 }
1080 else if (dosdev) /* look for device defaults */
1081 {
1082 if (!strcmpiW( name, auxW ))
1083 {
1084 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
1085 {
1086 memcpy( target, com1W, sizeof(com1W) );
1087 ret = sizeof(com1W)/sizeof(WCHAR);
1088 }
1089 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1090 return ret;
1091 }
1092 if (!strcmpiW( name, prnW ))
1093 {
1094 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
1095 {
1096 memcpy( target, lpt1W, sizeof(lpt1W) );
1097 ret = sizeof(lpt1W)/sizeof(WCHAR);
1098 }
1099 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1100 return ret;
1101 }
1102
1103 nt_buffer[0] = '\\';
1104 nt_buffer[1] = '?';
1105 nt_buffer[2] = '?';
1106 nt_buffer[3] = '\\';
1107 strcpyW( nt_buffer + 4, name );
1108 RtlInitUnicodeString( &nt_name, nt_buffer );
1109 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
1110 if (status) SetLastError( RtlNtStatusToDosError(status) );
1111 else
1112 {
1113 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
1114 RtlFreeAnsiString( &unix_name );
1115 }
1116 }
1117 done:
1118 if (ret)
1119 {
1120 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
1121 for (p = target; *p; p++) if (*p == '/') *p = '\\';
1122 }
1123
1124 return ret;
1125 }
1126 else /* return a list of all devices */
1127 {
1128 WCHAR *p = target;
1129 int i;
1130
1131 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1132 {
1133 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1134 return 0;
1135 }
1136
1137 memcpy( p, auxW, sizeof(auxW) );
1138 p += sizeof(auxW) / sizeof(WCHAR);
1139 memcpy( p, nulW, sizeof(nulW) );
1140 p += sizeof(nulW) / sizeof(WCHAR);
1141 memcpy( p, prnW, sizeof(prnW) );
1142 p += sizeof(prnW) / sizeof(WCHAR);
1143
1144 strcpyW( nt_buffer, com0W );
1145 RtlInitUnicodeString( &nt_name, nt_buffer );
1146
1147 for (i = 1; i <= 9; i++)
1148 {
1149 nt_buffer[7] = '0' + i;
1150 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1151 {
1152 RtlFreeAnsiString( &unix_name );
1153 if (p + 5 >= target + bufsize)
1154 {
1155 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1156 return 0;
1157 }
1158 strcpyW( p, comW );
1159 p[3] = '0' + i;
1160 p[4] = 0;
1161 p += 5;
1162 }
1163 }
1164 strcpyW( nt_buffer + 4, lptW );
1165 for (i = 1; i <= 9; i++)
1166 {
1167 nt_buffer[7] = '0' + i;
1168 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1169 {
1170 RtlFreeAnsiString( &unix_name );
1171 if (p + 5 >= target + bufsize)
1172 {
1173 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1174 return 0;
1175 }
1176 strcpyW( p, lptW );
1177 p[3] = '0' + i;
1178 p[4] = 0;
1179 p += 5;
1180 }
1181 }
1182
1183 strcpyW( nt_buffer + 4, rootW );
1184 RtlInitUnicodeString( &nt_name, nt_buffer );
1185
1186 /* FIXME: should simply enumerate the DosDevices directory instead */
1187 for (i = 0; i < 26; i++)
1188 {
1189 WCHAR buffer[sizeof(driveW)/sizeof(WCHAR)], dummy[8];
1190 NTSTATUS status;
1191
1192 memcpy( buffer, driveW, sizeof(driveW) );
1193 buffer[12] = 'A' + i;
1194 status = read_nt_symlink( buffer, dummy, sizeof(dummy)/sizeof(WCHAR) );
1195 if (status == STATUS_SUCCESS || status == STATUS_BUFFER_TOO_SMALL)
1196 {
1197 if (p + 3 >= target + bufsize)
1198 {
1199 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1200 return 0;
1201 }
1202 *p++ = 'A' + i;
1203 *p++ = ':';
1204 *p++ = 0;
1205 }
1206 }
1207 *p++ = 0; /* terminating null */
1208 return p - target;
1209 }
1210 }
1211
1212
1213 /***********************************************************************
1214 * QueryDosDeviceA (KERNEL32.@)
1215 *
1216 * returns array of strings terminated by \0, terminated by \0
1217 */
1218 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1219 {
1220 DWORD ret = 0, retW;
1221 WCHAR *devnameW = NULL;
1222 LPWSTR targetW;
1223
1224 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1225
1226 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1227 if (!targetW)
1228 {
1229 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1230 return 0;
1231 }
1232
1233 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1234
1235 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1236
1237 HeapFree(GetProcessHeap(), 0, targetW);
1238 return ret;
1239 }
1240
1241
1242 /***********************************************************************
1243 * GetLogicalDrives (KERNEL32.@)
1244 */
1245 DWORD WINAPI GetLogicalDrives(void)
1246 {
1247 const char *config_dir = wine_get_config_dir();
1248 struct stat st;
1249 char *buffer, *dev;
1250 DWORD ret = 0;
1251 int i;
1252
1253 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1254 {
1255 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1256 return 0;
1257 }
1258 strcpy( buffer, config_dir );
1259 strcat( buffer, "/dosdevices/a:" );
1260 dev = buffer + strlen(buffer) - 2;
1261
1262 for (i = 0; i < 26; i++)
1263 {
1264 *dev = 'a' + i;
1265 if (!stat( buffer, &st )) ret |= (1 << i);
1266 }
1267 HeapFree( GetProcessHeap(), 0, buffer );
1268 return ret;
1269 }
1270
1271
1272 /***********************************************************************
1273 * GetLogicalDriveStringsA (KERNEL32.@)
1274 */
1275 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1276 {
1277 DWORD drives = GetLogicalDrives();
1278 UINT drive, count;
1279
1280 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1281 if ((count * 4) + 1 > len) return count * 4 + 1;
1282
1283 for (drive = 0; drive < 26; drive++)
1284 {
1285 if (drives & (1 << drive))
1286 {
1287 *buffer++ = 'A' + drive;
1288 *buffer++ = ':';
1289 *buffer++ = '\\';
1290 *buffer++ = 0;
1291 }
1292 }
1293 *buffer = 0;
1294 return count * 4;
1295 }
1296
1297
1298 /***********************************************************************
1299 * GetLogicalDriveStringsW (KERNEL32.@)
1300 */
1301 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1302 {
1303 DWORD drives = GetLogicalDrives();
1304 UINT drive, count;
1305
1306 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1307 if ((count * 4) + 1 > len) return count * 4 + 1;
1308
1309 for (drive = 0; drive < 26; drive++)
1310 {
1311 if (drives & (1 << drive))
1312 {
1313 *buffer++ = 'A' + drive;
1314 *buffer++ = ':';
1315 *buffer++ = '\\';
1316 *buffer++ = 0;
1317 }
1318 }
1319 *buffer = 0;
1320 return count * 4;
1321 }
1322
1323
1324 /***********************************************************************
1325 * GetDriveTypeW (KERNEL32.@)
1326 *
1327 * Returns the type of the disk drive specified. If root is NULL the
1328 * root of the current directory is used.
1329 *
1330 * RETURNS
1331 *
1332 * Type of drive (from Win32 SDK):
1333 *
1334 * DRIVE_UNKNOWN unable to find out anything about the drive
1335 * DRIVE_NO_ROOT_DIR nonexistent root dir
1336 * DRIVE_REMOVABLE the disk can be removed from the machine
1337 * DRIVE_FIXED the disk cannot be removed from the machine
1338 * DRIVE_REMOTE network disk
1339 * DRIVE_CDROM CDROM drive
1340 * DRIVE_RAMDISK virtual disk in RAM
1341 */
1342 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1343 {
1344 FILE_FS_DEVICE_INFORMATION info;
1345 IO_STATUS_BLOCK io;
1346 NTSTATUS status;
1347 HANDLE handle;
1348 UINT ret;
1349
1350 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1351
1352 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1353 NtClose( handle );
1354 if (status != STATUS_SUCCESS)
1355 {
1356 SetLastError( RtlNtStatusToDosError(status) );
1357 ret = DRIVE_UNKNOWN;
1358 }
1359 else
1360 {
1361 switch (info.DeviceType)
1362 {
1363 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1364 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1365 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1366 case FILE_DEVICE_DISK_FILE_SYSTEM:
1367 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1368 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1369 else if ((ret = get_mountmgr_drive_type( root )) == DRIVE_UNKNOWN) ret = DRIVE_FIXED;
1370 break;
1371 default:
1372 ret = DRIVE_UNKNOWN;
1373 break;
1374 }
1375 }
1376 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1377 return ret;
1378 }
1379
1380
1381 /***********************************************************************
1382 * GetDriveTypeA (KERNEL32.@)
1383 *
1384 * See GetDriveTypeW.
1385 */
1386 UINT WINAPI GetDriveTypeA( LPCSTR root )
1387 {
1388 WCHAR *rootW = NULL;
1389
1390 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1391 return GetDriveTypeW( rootW );
1392 }
1393
1394
1395 /***********************************************************************
1396 * GetDiskFreeSpaceExW (KERNEL32.@)
1397 *
1398 * This function is used to acquire the size of the available and
1399 * total space on a logical volume.
1400 *
1401 * RETURNS
1402 *
1403 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1404 * detailed error information.
1405 *
1406 */
1407 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1408 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1409 {
1410 FILE_FS_SIZE_INFORMATION info;
1411 IO_STATUS_BLOCK io;
1412 NTSTATUS status;
1413 HANDLE handle;
1414 UINT units;
1415
1416 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1417
1418 if (!open_device_root( root, &handle )) return FALSE;
1419
1420 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1421 NtClose( handle );
1422 if (status != STATUS_SUCCESS)
1423 {
1424 SetLastError( RtlNtStatusToDosError(status) );
1425 return FALSE;
1426 }
1427
1428 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1429 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1430 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1431 /* FIXME: this one should take quotas into account */
1432 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1433 return TRUE;
1434 }
1435
1436
1437 /***********************************************************************
1438 * GetDiskFreeSpaceExA (KERNEL32.@)
1439 *
1440 * See GetDiskFreeSpaceExW.
1441 */
1442 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1443 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1444 {
1445 WCHAR *rootW = NULL;
1446
1447 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1448 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1449 }
1450
1451
1452 /***********************************************************************
1453 * GetDiskFreeSpaceW (KERNEL32.@)
1454 */
1455 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1456 LPDWORD sector_bytes, LPDWORD free_clusters,
1457 LPDWORD total_clusters )
1458 {
1459 FILE_FS_SIZE_INFORMATION info;
1460 IO_STATUS_BLOCK io;
1461 NTSTATUS status;
1462 HANDLE handle;
1463 UINT units;
1464
1465 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1466 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1467
1468 if (!open_device_root( root, &handle )) return FALSE;
1469
1470 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1471 NtClose( handle );
1472 if (status != STATUS_SUCCESS)
1473 {
1474 SetLastError( RtlNtStatusToDosError(status) );
1475 return FALSE;
1476 }
1477
1478 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1479
1480 if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
1481 /* cap the size and available at 2GB as per specs */
1482 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1483 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1484 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1485 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1486 }
1487 /* nr. of clusters is always <= 65335 */
1488 while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1489 info.TotalAllocationUnits.QuadPart /= 2;
1490 info.AvailableAllocationUnits.QuadPart /= 2;
1491 info.SectorsPerAllocationUnit *= 2;
1492 }
1493 }
1494
1495 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1496 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1497 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1498 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1499 return TRUE;
1500 }
1501
1502
1503 /***********************************************************************
1504 * GetDiskFreeSpaceA (KERNEL32.@)
1505 */
1506 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1507 LPDWORD sector_bytes, LPDWORD free_clusters,
1508 LPDWORD total_clusters )
1509 {
1510 WCHAR *rootW = NULL;
1511
1512 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1513 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1514 }
1515
1516 /***********************************************************************
1517 * GetVolumePathNameA (KERNEL32.@)
1518 */
1519 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1520 {
1521 BOOL ret;
1522 WCHAR *filenameW = NULL, *volumeW;
1523
1524 FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1525
1526 if (filename && !(filenameW = FILE_name_AtoW( filename, FALSE ))) return FALSE;
1527 if (!(volumeW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) ))) return FALSE;
1528
1529 if ((ret = GetVolumePathNameW( filenameW, volumeW, buflen )))
1530 FILE_name_WtoA( volumeW, -1, volumepathname, buflen );
1531
1532 HeapFree( GetProcessHeap(), 0, volumeW );
1533 return ret;
1534 }
1535
1536 /***********************************************************************
1537 * GetVolumePathNameW (KERNEL32.@)
1538 */
1539 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1540 {
1541 const WCHAR *p = filename;
1542
1543 FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1544
1545 if (p && tolowerW(p[0]) >= 'a' && tolowerW(p[0]) <= 'z' && p[1] ==':' && p[2] == '\\' && buflen >= 4)
1546 {
1547 volumepathname[0] = p[0];
1548 volumepathname[1] = ':';
1549 volumepathname[2] = '\\';
1550 volumepathname[3] = 0;
1551 return TRUE;
1552 }
1553 return FALSE;
1554 }
1555
1556 /***********************************************************************
1557 * FindFirstVolumeA (KERNEL32.@)
1558 */
1559 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1560 {
1561 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1562 HANDLE handle = FindFirstVolumeW( buffer, len );
1563
1564 if (handle != INVALID_HANDLE_VALUE)
1565 {
1566 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1567 {
1568 FindVolumeClose( handle );
1569 handle = INVALID_HANDLE_VALUE;
1570 }
1571 }
1572 HeapFree( GetProcessHeap(), 0, buffer );
1573 return handle;
1574 }
1575
1576 /***********************************************************************
1577 * FindFirstVolumeW (KERNEL32.@)
1578 */
1579 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1580 {
1581 DWORD size = 1024;
1582 HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1583 NULL, OPEN_EXISTING, 0, 0 );
1584 if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1585
1586 for (;;)
1587 {
1588 MOUNTMGR_MOUNT_POINT input;
1589 MOUNTMGR_MOUNT_POINTS *output;
1590
1591 if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1592 {
1593 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1594 break;
1595 }
1596 memset( &input, 0, sizeof(input) );
1597
1598 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1599 output, size, NULL, NULL ))
1600 {
1601 if (GetLastError() != ERROR_MORE_DATA) break;
1602 size = output->Size;
1603 HeapFree( GetProcessHeap(), 0, output );
1604 continue;
1605 }
1606 CloseHandle( mgr );
1607 /* abuse the Size field to store the current index */
1608 output->Size = 0;
1609 if (!FindNextVolumeW( output, volume, len ))
1610 {
1611 HeapFree( GetProcessHeap(), 0, output );
1612 return INVALID_HANDLE_VALUE;
1613 }
1614 return output;
1615 }
1616 CloseHandle( mgr );
1617 return INVALID_HANDLE_VALUE;
1618 }
1619
1620 /***********************************************************************
1621 * FindNextVolumeA (KERNEL32.@)
1622 */
1623 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1624 {
1625 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1626 BOOL ret;
1627
1628 if ((ret = FindNextVolumeW( handle, buffer, len )))
1629 {
1630 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1631 }
1632 HeapFree( GetProcessHeap(), 0, buffer );
1633 return ret;
1634 }
1635
1636 /***********************************************************************
1637 * FindNextVolumeW (KERNEL32.@)
1638 */
1639 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
1640 {
1641 MOUNTMGR_MOUNT_POINTS *data = handle;
1642
1643 while (data->Size < data->NumberOfMountPoints)
1644 {
1645 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
1646 WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
1647 DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
1648 data->Size++;
1649 /* skip non-volumes */
1650 if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
1651 if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
1652 {
1653 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1654 return FALSE;
1655 }
1656 memcpy( volume, link, size );
1657 volume[1] = '\\'; /* map \??\ to \\?\ */
1658 volume[size / sizeof(WCHAR)] = '\\'; /* Windows appends a backslash */
1659 volume[size / sizeof(WCHAR) + 1] = 0;
1660 TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
1661 return TRUE;
1662 }
1663 SetLastError( ERROR_NO_MORE_FILES );
1664 return FALSE;
1665 }
1666
1667 /***********************************************************************
1668 * FindVolumeClose (KERNEL32.@)
1669 */
1670 BOOL WINAPI FindVolumeClose(HANDLE handle)
1671 {
1672 return HeapFree( GetProcessHeap(), 0, handle );
1673 }
1674
1675 /***********************************************************************
1676 * FindFirstVolumeMountPointA (KERNEL32.@)
1677 */
1678 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1679 {
1680 FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1681 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1682 return INVALID_HANDLE_VALUE;
1683 }
1684
1685 /***********************************************************************
1686 * FindFirstVolumeMountPointW (KERNEL32.@)
1687 */
1688 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1689 {
1690 FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1691 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1692 return INVALID_HANDLE_VALUE;
1693 }
1694
1695 /***********************************************************************
1696 * FindVolumeMountPointClose (KERNEL32.@)
1697 */
1698 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1699 {
1700 FIXME("(%p), stub!\n", h);
1701 return FALSE;
1702 }
useful hacks and other patches not (yet) suitable for mainline