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fusion: Implement CreateAssemblyCache.
[wine.git] / dlls / kernel32 / volume.c
blob74397a9f9bcb88bfd709dd2d3941fb6af2a3277b
1 /*
2 * Volume management functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 1996, 2004 Alexandre Julliard
6 * Copyright 1999 Petr Tomasek
7 * Copyright 2000 Andreas Mohr
8 * Copyright 2003 Eric Pouech
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "winnls.h"
37 #include "winternl.h"
38 #include "winioctl.h"
39 #include "ntddcdrm.h"
40 #include "ddk/mountmgr.h"
41 #include "kernel_private.h"
42 #include "wine/library.h"
43 #include "wine/unicode.h"
44 #include "wine/debug.h"
45
46 WINE_DEFAULT_DEBUG_CHANNEL(volume);
47
48 #define SUPERBLOCK_SIZE 2048
49
50 #define CDFRAMES_PERSEC 75
51 #define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
52 #define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
53 #define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
54
55 #define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
56 #define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
57
58 enum fs_type
59 {
60 FS_ERROR, /* error accessing the device */
61 FS_UNKNOWN, /* unknown file system */
62 FS_FAT1216,
63 FS_FAT32,
64 FS_ISO9660
65 };
66
67 static const WCHAR drive_types[][8] =
68 {
69 { 0 }, /* DRIVE_UNKNOWN */
70 { 0 }, /* DRIVE_NO_ROOT_DIR */
71 {'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
72 {'h','d',0}, /* DRIVE_FIXED */
73 {'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
74 {'c','d','r','o','m',0}, /* DRIVE_CDROM */
75 {'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
76 };
77
78 /* read a Unix symlink; returned buffer must be freed by caller */
79 static char *read_symlink( const char *path )
80 {
81 char *buffer;
82 int ret, size = 128;
83
84 for (;;)
85 {
86 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
87 {
88 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
89 return 0;
90 }
91 ret = readlink( path, buffer, size );
92 if (ret == -1)
93 {
94 FILE_SetDosError();
95 HeapFree( GetProcessHeap(), 0, buffer );
96 return 0;
97 }
98 if (ret != size)
99 {
100 buffer[ret] = 0;
101 return buffer;
102 }
103 HeapFree( GetProcessHeap(), 0, buffer );
104 size *= 2;
105 }
106 }
107
108 /* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
109 static char *get_dos_device_path( LPCWSTR name )
110 {
111 const char *config_dir = wine_get_config_dir();
112 char *buffer, *dev;
113 int i;
114
115 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
116 strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
117 {
118 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
119 return NULL;
120 }
121 strcpy( buffer, config_dir );
122 strcat( buffer, "/dosdevices/" );
123 dev = buffer + strlen(buffer);
124 /* no codepage conversion, DOS device names are ASCII anyway */
125 for (i = 0; i < 5; i++)
126 if (!(dev[i] = (char)tolowerW(name[i]))) break;
127 dev[5] = 0;
128 return buffer;
129 }
130
131
132 /* open a handle to a device root */
133 static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
134 {
135 static const WCHAR default_rootW[] = {'\\',0};
136 UNICODE_STRING nt_name;
137 OBJECT_ATTRIBUTES attr;
138 IO_STATUS_BLOCK io;
139 NTSTATUS status;
140
141 if (!root) root = default_rootW;
142 if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
143 {
144 SetLastError( ERROR_PATH_NOT_FOUND );
145 return FALSE;
146 }
147 attr.Length = sizeof(attr);
148 attr.RootDirectory = 0;
149 attr.Attributes = OBJ_CASE_INSENSITIVE;
150 attr.ObjectName = &nt_name;
151 attr.SecurityDescriptor = NULL;
152 attr.SecurityQualityOfService = NULL;
153
154 status = NtOpenFile( handle, 0, &attr, &io, 0,
155 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
156 RtlFreeUnicodeString( &nt_name );
157 if (status != STATUS_SUCCESS)
158 {
159 SetLastError( RtlNtStatusToDosError(status) );
160 return FALSE;
161 }
162 return TRUE;
163 }
164
165 /* get the label by reading it from a file at the root of the filesystem */
166 static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len )
167 {
168 HANDLE handle;
169 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
170
171 labelW[0] = device[4];
172 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
173 OPEN_EXISTING, 0, 0 );
174 if (handle != INVALID_HANDLE_VALUE)
175 {
176 char buffer[256], *p;
177 DWORD size;
178
179 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
180 CloseHandle( handle );
181 p = buffer + size;
182 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
183 *p = 0;
184 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
185 label[len-1] = 0;
186 }
187 else label[0] = 0;
188 }
189
190 /* get the serial number by reading it from a file at the root of the filesystem */
191 static DWORD get_filesystem_serial( const WCHAR *device )
192 {
193 HANDLE handle;
194 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
195
196 serialW[0] = device[4];
197 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
198 OPEN_EXISTING, 0, 0 );
199 if (handle != INVALID_HANDLE_VALUE)
200 {
201 char buffer[32];
202 DWORD size;
203
204 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
205 CloseHandle( handle );
206 buffer[size] = 0;
207 return strtoul( buffer, NULL, 16 );
208 }
209 else return 0;
210 }
211
212 /* fetch the type of a drive from the registry */
213 static UINT get_registry_drive_type( const WCHAR *root )
214 {
215 static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
216 'S','o','f','t','w','a','r','e','\\',
217 'W','i','n','e','\\',
218 'D','r','i','v','e','s',0 };
219 OBJECT_ATTRIBUTES attr;
220 UNICODE_STRING nameW;
221 HANDLE hkey;
222 DWORD dummy;
223 UINT ret = DRIVE_UNKNOWN;
224 char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
225 WCHAR driveW[] = {'A',':',0};
226
227 attr.Length = sizeof(attr);
228 attr.RootDirectory = 0;
229 attr.ObjectName = &nameW;
230 attr.Attributes = 0;
231 attr.SecurityDescriptor = NULL;
232 attr.SecurityQualityOfService = NULL;
233 RtlInitUnicodeString( &nameW, drive_types_keyW );
234 /* @@ Wine registry key: HKLM\Software\Wine\Drives */
235 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
236
237 if (root) driveW[0] = root[0];
238 else
239 {
240 WCHAR path[MAX_PATH];
241 GetCurrentDirectoryW( MAX_PATH, path );
242 driveW[0] = path[0];
243 }
244
245 RtlInitUnicodeString( &nameW, driveW );
246 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
247 {
248 unsigned int i;
249 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
250
251 for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
252 {
253 if (!strcmpiW( data, drive_types[i] ))
254 {
255 ret = i;
256 break;
257 }
258 }
259 }
260 NtClose( hkey );
261 return ret;
262 }
263
264
265 /******************************************************************
266 * VOLUME_FindCdRomDataBestVoldesc
267 */
268 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
269 {
270 BYTE cur_vd_type, max_vd_type = 0;
271 BYTE buffer[0x800];
272 DWORD size, offs, best_offs = 0, extra_offs = 0;
273
274 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
275 {
276 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
277 * the volume label is displaced forward by 8
278 */
279 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
280 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
281 if (size != sizeof(buffer)) break;
282 /* check for non-ISO9660 signature */
283 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
284 cur_vd_type = buffer[extra_offs];
285 if (cur_vd_type == 0xff) /* voldesc set terminator */
286 break;
287 if (cur_vd_type > max_vd_type)
288 {
289 max_vd_type = cur_vd_type;
290 best_offs = offs + extra_offs;
291 }
292 }
293 return best_offs;
294 }
295
296
297 /***********************************************************************
298 * VOLUME_ReadFATSuperblock
299 */
300 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
301 {
302 DWORD size;
303
304 /* try a fixed disk, with a FAT partition */
305 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
306 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
307 {
308 if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN; /* not a real device */
309 return FS_ERROR;
310 }
311
312 if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
313
314 /* FIXME: do really all FAT have their name beginning with
315 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
316 */
317 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
318 {
319 /* guess which type of FAT we have */
320 int reasonable;
321 unsigned int sectors,
322 sect_per_fat,
323 total_sectors,
324 num_boot_sectors,
325 num_fats,
326 num_root_dir_ents,
327 bytes_per_sector,
328 sectors_per_cluster,
329 nclust;
330 sect_per_fat = GETWORD(buff, 0x16);
331 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
332 total_sectors = GETWORD(buff, 0x13);
333 if (!total_sectors)
334 total_sectors = GETLONG(buff, 0x20);
335 num_boot_sectors = GETWORD(buff, 0x0e);
336 num_fats = buff[0x10];
337 num_root_dir_ents = GETWORD(buff, 0x11);
338 bytes_per_sector = GETWORD(buff, 0x0b);
339 sectors_per_cluster = buff[0x0d];
340 /* check if the parameters are reasonable and will not cause
341 * arithmetic errors in the calculation */
342 reasonable = num_boot_sectors < total_sectors &&
343 num_fats < 16 &&
344 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
345 sectors_per_cluster > 1;
346 if (!reasonable) return FS_UNKNOWN;
347 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
348 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
349 nclust = sectors / sectors_per_cluster;
350 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
351 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
352 if (nclust < 65525)
353 {
354 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
355 !memcmp(buff+0x36, "FAT", 3))
356 return FS_FAT1216;
357 }
358 }
359 return FS_UNKNOWN;
360 }
361
362
363 /***********************************************************************
364 * VOLUME_ReadCDSuperblock
365 */
366 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
367 {
368 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
369
370 if (!offs) return FS_UNKNOWN;
371
372 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
373 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
374 size != SUPERBLOCK_SIZE)
375 return FS_ERROR;
376
377 /* check for iso9660 present */
378 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
379 return FS_UNKNOWN;
380 }
381
382
383 /**************************************************************************
384 * VOLUME_GetSuperblockLabel
385 */
386 static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock,
387 WCHAR *label, DWORD len )
388 {
389 const BYTE *label_ptr = NULL;
390 DWORD label_len;
391
392 switch(type)
393 {
394 case FS_ERROR:
395 label_len = 0;
396 break;
397 case FS_UNKNOWN:
398 get_filesystem_label( device, label, len );
399 return;
400 case FS_FAT1216:
401 label_ptr = superblock + 0x2b;
402 label_len = 11;
403 break;
404 case FS_FAT32:
405 label_ptr = superblock + 0x47;
406 label_len = 11;
407 break;
408 case FS_ISO9660:
409 {
410 BYTE ver = superblock[0x5a];
411
412 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
413 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
414 { /* yippee, unicode */
415 unsigned int i;
416
417 if (len > 17) len = 17;
418 for (i = 0; i < len-1; i++)
419 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
420 label[i] = 0;
421 while (i && label[i-1] == ' ') label[--i] = 0;
422 return;
423 }
424 label_ptr = superblock + 40;
425 label_len = 32;
426 break;
427 }
428 }
429 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
430 &label_len, (LPCSTR)label_ptr, label_len );
431 label_len /= sizeof(WCHAR);
432 label[label_len] = 0;
433 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
434 }
435
436
437 /**************************************************************************
438 * VOLUME_GetSuperblockSerial
439 */
440 static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock )
441 {
442 switch(type)
443 {
444 case FS_ERROR:
445 break;
446 case FS_UNKNOWN:
447 return get_filesystem_serial( device );
448 case FS_FAT1216:
449 return GETLONG( superblock, 0x27 );
450 case FS_FAT32:
451 return GETLONG( superblock, 0x33 );
452 case FS_ISO9660:
453 {
454 BYTE sum[4];
455 int i;
456
457 sum[0] = sum[1] = sum[2] = sum[3] = 0;
458 for (i = 0; i < 2048; i += 4)
459 {
460 /* DON'T optimize this into DWORD !! (breaks overflow) */
461 sum[0] += superblock[i+0];
462 sum[1] += superblock[i+1];
463 sum[2] += superblock[i+2];
464 sum[3] += superblock[i+3];
465 }
466 /*
467 * OK, another braindead one... argh. Just believe it.
468 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
469 * It's true and nobody will ever be able to change it.
470 */
471 if (GetVersion() & 0x80000000)
472 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
473 else
474 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
475 }
476 }
477 return 0;
478 }
479
480
481 /**************************************************************************
482 * VOLUME_GetAudioCDSerial
483 */
484 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
485 {
486 DWORD serial = 0;
487 int i;
488
489 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
490 serial += ((toc->TrackData[i].Address[1] << 16) |
491 (toc->TrackData[i].Address[2] << 8) |
492 toc->TrackData[i].Address[3]);
493
494 /*
495 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
496 * frames.
497 * There it is collected for correcting the serial when there are less than
498 * 3 tracks.
499 */
500 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
501 {
502 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
503 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
504 serial += dwEnd - dwStart;
505 }
506 return serial;
507 }
508
509
510 /***********************************************************************
511 * GetVolumeInformationW (KERNEL32.@)
512 */
513 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
514 DWORD *serial, DWORD *filename_len, DWORD *flags,
515 LPWSTR fsname, DWORD fsname_len )
516 {
517 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
518 static const WCHAR fatW[] = {'F','A','T',0};
519 static const WCHAR fat32W[] = {'F','A','T','3','2',0};
520 static const WCHAR ntfsW[] = {'N','T','F','S',0};
521 static const WCHAR cdfsW[] = {'C','D','F','S',0};
522
523 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
524 HANDLE handle;
525 enum fs_type type = FS_UNKNOWN;
526
527 if (!root)
528 {
529 WCHAR path[MAX_PATH];
530 GetCurrentDirectoryW( MAX_PATH, path );
531 device[4] = path[0];
532 }
533 else
534 {
535 if (!root[0] || root[1] != ':')
536 {
537 SetLastError( ERROR_INVALID_NAME );
538 return FALSE;
539 }
540 device[4] = root[0];
541 }
542
543 /* try to open the device */
544
545 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
546 NULL, OPEN_EXISTING, 0, 0 );
547 if (handle != INVALID_HANDLE_VALUE)
548 {
549 BYTE superblock[SUPERBLOCK_SIZE];
550 CDROM_TOC toc;
551 DWORD br;
552
553 /* check for audio CD */
554 /* FIXME: we only check the first track for now */
555 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
556 {
557 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
558 {
559 TRACE( "%s: found audio CD\n", debugstr_w(device) );
560 if (label) lstrcpynW( label, audiocdW, label_len );
561 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
562 CloseHandle( handle );
563 type = FS_ISO9660;
564 goto fill_fs_info;
565 }
566 type = VOLUME_ReadCDSuperblock( handle, superblock );
567 }
568 else
569 {
570 type = VOLUME_ReadFATSuperblock( handle, superblock );
571 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
572 }
573 CloseHandle( handle );
574 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
575 if (type == FS_ERROR) return FALSE;
576
577 if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len );
578 if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock );
579 goto fill_fs_info;
580 }
581 else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
582
583 /* we couldn't open the device, fallback to default strategy */
584
585 switch(GetDriveTypeW( root ))
586 {
587 case DRIVE_UNKNOWN:
588 case DRIVE_NO_ROOT_DIR:
589 SetLastError( ERROR_NOT_READY );
590 return FALSE;
591 case DRIVE_REMOVABLE:
592 case DRIVE_FIXED:
593 case DRIVE_REMOTE:
594 case DRIVE_RAMDISK:
595 type = FS_UNKNOWN;
596 break;
597 case DRIVE_CDROM:
598 type = FS_ISO9660;
599 break;
600 }
601
602 if (label && label_len) get_filesystem_label( device, label, label_len );
603 if (serial) *serial = get_filesystem_serial( device );
604
605 fill_fs_info: /* now fill in the information that depends on the file system type */
606
607 switch(type)
608 {
609 case FS_ISO9660:
610 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
611 if (filename_len) *filename_len = 221;
612 if (flags) *flags = FILE_READ_ONLY_VOLUME;
613 break;
614 case FS_FAT1216:
615 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
616 case FS_FAT32:
617 if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
618 if (filename_len) *filename_len = 255;
619 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
620 break;
621 default:
622 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
623 if (filename_len) *filename_len = 255;
624 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
625 break;
626 }
627 return TRUE;
628 }
629
630
631 /***********************************************************************
632 * GetVolumeInformationA (KERNEL32.@)
633 */
634 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
635 DWORD label_len, DWORD *serial,
636 DWORD *filename_len, DWORD *flags,
637 LPSTR fsname, DWORD fsname_len )
638 {
639 WCHAR *rootW = NULL;
640 LPWSTR labelW, fsnameW;
641 BOOL ret;
642
643 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
644
645 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
646 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
647
648 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
649 filename_len, flags, fsnameW, fsname_len)))
650 {
651 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
652 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
653 }
654
655 HeapFree( GetProcessHeap(), 0, labelW );
656 HeapFree( GetProcessHeap(), 0, fsnameW );
657 return ret;
658 }
659
660
661
662 /***********************************************************************
663 * SetVolumeLabelW (KERNEL32.@)
664 */
665 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
666 {
667 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
668 HANDLE handle;
669 enum fs_type type = FS_UNKNOWN;
670
671 if (!root)
672 {
673 WCHAR path[MAX_PATH];
674 GetCurrentDirectoryW( MAX_PATH, path );
675 device[4] = path[0];
676 }
677 else
678 {
679 if (!root[0] || root[1] != ':')
680 {
681 SetLastError( ERROR_INVALID_NAME );
682 return FALSE;
683 }
684 device[4] = root[0];
685 }
686
687 /* try to open the device */
688
689 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
690 NULL, OPEN_EXISTING, 0, 0 );
691 if (handle != INVALID_HANDLE_VALUE)
692 {
693 BYTE superblock[SUPERBLOCK_SIZE];
694
695 type = VOLUME_ReadFATSuperblock( handle, superblock );
696 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
697 CloseHandle( handle );
698 if (type != FS_UNKNOWN)
699 {
700 /* we can't set the label on FAT or CDROM file systems */
701 TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
702 SetLastError( ERROR_ACCESS_DENIED );
703 return FALSE;
704 }
705 }
706 else
707 {
708 TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
709 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
710 }
711
712 /* we couldn't open the device, fallback to default strategy */
713
714 switch(GetDriveTypeW( root ))
715 {
716 case DRIVE_UNKNOWN:
717 case DRIVE_NO_ROOT_DIR:
718 SetLastError( ERROR_NOT_READY );
719 break;
720 case DRIVE_REMOVABLE:
721 case DRIVE_FIXED:
722 {
723 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
724
725 labelW[0] = device[4];
726 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
727 CREATE_ALWAYS, 0, 0 );
728 if (handle != INVALID_HANDLE_VALUE)
729 {
730 char buffer[64];
731 DWORD size;
732
733 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
734 buffer[sizeof(buffer)-1] = 0;
735 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
736 CloseHandle( handle );
737 return TRUE;
738 }
739 break;
740 }
741 case DRIVE_REMOTE:
742 case DRIVE_RAMDISK:
743 case DRIVE_CDROM:
744 SetLastError( ERROR_ACCESS_DENIED );
745 break;
746 }
747 return FALSE;
748 }
749
750 /***********************************************************************
751 * SetVolumeLabelA (KERNEL32.@)
752 */
753 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
754 {
755 WCHAR *rootW = NULL, *volnameW = NULL;
756 BOOL ret;
757
758 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
759 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
760 ret = SetVolumeLabelW( rootW, volnameW );
761 HeapFree( GetProcessHeap(), 0, volnameW );
762 return ret;
763 }
764
765
766 /***********************************************************************
767 * GetVolumeNameForVolumeMountPointA (KERNEL32.@)
768 */
769 BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
770 {
771 BOOL ret;
772 WCHAR volumeW[50], *pathW = NULL;
773 DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
774
775 TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
776
777 if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
778 return FALSE;
779
780 if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
781 FILE_name_WtoA( volumeW, -1, volume, len );
782
783 HeapFree( GetProcessHeap(), 0, pathW );
784 return ret;
785 }
786
787 /***********************************************************************
788 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
789 */
790 BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
791 {
792 BOOL ret = FALSE;
793 static const WCHAR fmt[] =
794 { '\\','\\','?','\\','V','o','l','u','m','e','{','%','0','2','x','}','\\',0 };
795
796 TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
797
798 if (!path || !path[0]) return FALSE;
799
800 if (size >= sizeof(fmt) / sizeof(WCHAR))
801 {
802 /* FIXME: will break when we support volume mounts */
803 sprintfW( volume, fmt, tolowerW( path[0] ) - 'a' );
804 ret = TRUE;
805 }
806 return ret;
807 }
808
809 /***********************************************************************
810 * DefineDosDeviceW (KERNEL32.@)
811 */
812 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
813 {
814 DWORD len, dosdev;
815 BOOL ret = FALSE;
816 char *path = NULL, *target, *p;
817
818 TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
819
820 if (!(flags & DDD_REMOVE_DEFINITION))
821 {
822 if (!(flags & DDD_RAW_TARGET_PATH))
823 {
824 FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
825 flags, debugstr_w(devname), debugstr_w(targetpath) );
826 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
827 return FALSE;
828 }
829
830 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
831 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
832 {
833 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
834 for (p = target; *p; p++) if (*p == '\\') *p = '/';
835 }
836 else
837 {
838 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
839 return FALSE;
840 }
841 }
842 else target = NULL;
843
844 /* first check for a DOS device */
845
846 if ((dosdev = RtlIsDosDeviceName_U( devname )))
847 {
848 WCHAR name[5];
849
850 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
851 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
852 path = get_dos_device_path( name );
853 }
854 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
855 {
856 path = get_dos_device_path( devname );
857 }
858 else SetLastError( ERROR_FILE_NOT_FOUND );
859
860 if (path)
861 {
862 if (target)
863 {
864 TRACE( "creating symlink %s -> %s\n", path, target );
865 unlink( path );
866 if (!symlink( target, path )) ret = TRUE;
867 else FILE_SetDosError();
868 }
869 else
870 {
871 TRACE( "removing symlink %s\n", path );
872 if (!unlink( path )) ret = TRUE;
873 else FILE_SetDosError();
874 }
875 HeapFree( GetProcessHeap(), 0, path );
876 }
877 HeapFree( GetProcessHeap(), 0, target );
878 return ret;
879 }
880
881
882 /***********************************************************************
883 * DefineDosDeviceA (KERNEL32.@)
884 */
885 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
886 {
887 WCHAR *devW, *targetW = NULL;
888 BOOL ret;
889
890 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
891 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
892 ret = DefineDosDeviceW(flags, devW, targetW);
893 HeapFree( GetProcessHeap(), 0, targetW );
894 return ret;
895 }
896
897
898 /***********************************************************************
899 * QueryDosDeviceW (KERNEL32.@)
900 *
901 * returns array of strings terminated by \0, terminated by \0
902 */
903 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
904 {
905 static const WCHAR auxW[] = {'A','U','X',0};
906 static const WCHAR nulW[] = {'N','U','L',0};
907 static const WCHAR prnW[] = {'P','R','N',0};
908 static const WCHAR comW[] = {'C','O','M',0};
909 static const WCHAR lptW[] = {'L','P','T',0};
910 static const WCHAR rootW[] = {'A',':','\\',0};
911 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
912 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
913 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
914
915 UNICODE_STRING nt_name;
916 ANSI_STRING unix_name;
917 WCHAR nt_buffer[10];
918 NTSTATUS status;
919
920 if (!bufsize)
921 {
922 SetLastError( ERROR_INSUFFICIENT_BUFFER );
923 return 0;
924 }
925
926 if (devname)
927 {
928 WCHAR *p, name[5];
929 char *path, *link;
930 DWORD dosdev, ret = 0;
931
932 if ((dosdev = RtlIsDosDeviceName_U( devname )))
933 {
934 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
935 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
936 }
937 else if (devname[0] && devname[1] == ':' && !devname[2])
938 {
939 memcpy( name, devname, 3 * sizeof(WCHAR) );
940 }
941 else
942 {
943 SetLastError( ERROR_BAD_PATHNAME );
944 return 0;
945 }
946
947 if (!(path = get_dos_device_path( name ))) return 0;
948 link = read_symlink( path );
949 HeapFree( GetProcessHeap(), 0, path );
950
951 if (link)
952 {
953 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
954 HeapFree( GetProcessHeap(), 0, link );
955 }
956 else if (dosdev) /* look for device defaults */
957 {
958 if (!strcmpiW( name, auxW ))
959 {
960 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
961 {
962 memcpy( target, com1W, sizeof(com1W) );
963 ret = sizeof(com1W)/sizeof(WCHAR);
964 }
965 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
966 return ret;
967 }
968 if (!strcmpiW( name, prnW ))
969 {
970 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
971 {
972 memcpy( target, lpt1W, sizeof(lpt1W) );
973 ret = sizeof(lpt1W)/sizeof(WCHAR);
974 }
975 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
976 return ret;
977 }
978
979 nt_buffer[0] = '\\';
980 nt_buffer[1] = '?';
981 nt_buffer[2] = '?';
982 nt_buffer[3] = '\\';
983 strcpyW( nt_buffer + 4, name );
984 RtlInitUnicodeString( &nt_name, nt_buffer );
985 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
986 if (status) SetLastError( RtlNtStatusToDosError(status) );
987 else
988 {
989 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
990 RtlFreeAnsiString( &unix_name );
991 }
992 }
993
994 if (ret)
995 {
996 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
997 for (p = target; *p; p++) if (*p == '/') *p = '\\';
998 }
999
1000 return ret;
1001 }
1002 else /* return a list of all devices */
1003 {
1004 WCHAR *p = target;
1005 int i;
1006
1007 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1008 {
1009 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1010 return 0;
1011 }
1012
1013 memcpy( p, auxW, sizeof(auxW) );
1014 p += sizeof(auxW) / sizeof(WCHAR);
1015 memcpy( p, nulW, sizeof(nulW) );
1016 p += sizeof(nulW) / sizeof(WCHAR);
1017 memcpy( p, prnW, sizeof(prnW) );
1018 p += sizeof(prnW) / sizeof(WCHAR);
1019
1020 strcpyW( nt_buffer, com0W );
1021 RtlInitUnicodeString( &nt_name, nt_buffer );
1022
1023 for (i = 1; i <= 9; i++)
1024 {
1025 nt_buffer[7] = '0' + i;
1026 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1027 {
1028 RtlFreeAnsiString( &unix_name );
1029 if (p + 5 >= target + bufsize)
1030 {
1031 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1032 return 0;
1033 }
1034 strcpyW( p, comW );
1035 p[3] = '0' + i;
1036 p[4] = 0;
1037 p += 5;
1038 }
1039 }
1040 strcpyW( nt_buffer + 4, lptW );
1041 for (i = 1; i <= 9; i++)
1042 {
1043 nt_buffer[7] = '0' + i;
1044 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1045 {
1046 RtlFreeAnsiString( &unix_name );
1047 if (p + 5 >= target + bufsize)
1048 {
1049 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1050 return 0;
1051 }
1052 strcpyW( p, lptW );
1053 p[3] = '0' + i;
1054 p[4] = 0;
1055 p += 5;
1056 }
1057 }
1058
1059 strcpyW( nt_buffer + 4, rootW );
1060 RtlInitUnicodeString( &nt_name, nt_buffer );
1061
1062 for (i = 0; i < 26; i++)
1063 {
1064 nt_buffer[4] = 'a' + i;
1065 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1066 {
1067 RtlFreeAnsiString( &unix_name );
1068 if (p + 3 >= target + bufsize)
1069 {
1070 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1071 return 0;
1072 }
1073 *p++ = 'A' + i;
1074 *p++ = ':';
1075 *p++ = 0;
1076 }
1077 }
1078 *p++ = 0; /* terminating null */
1079 return p - target;
1080 }
1081 }
1082
1083
1084 /***********************************************************************
1085 * QueryDosDeviceA (KERNEL32.@)
1086 *
1087 * returns array of strings terminated by \0, terminated by \0
1088 */
1089 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1090 {
1091 DWORD ret = 0, retW;
1092 WCHAR *devnameW = NULL;
1093 LPWSTR targetW;
1094
1095 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1096
1097 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1098 if (!targetW)
1099 {
1100 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1101 return 0;
1102 }
1103
1104 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1105
1106 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1107
1108 HeapFree(GetProcessHeap(), 0, targetW);
1109 return ret;
1110 }
1111
1112
1113 /***********************************************************************
1114 * GetLogicalDrives (KERNEL32.@)
1115 */
1116 DWORD WINAPI GetLogicalDrives(void)
1117 {
1118 const char *config_dir = wine_get_config_dir();
1119 struct stat st;
1120 char *buffer, *dev;
1121 DWORD ret = 0;
1122 int i;
1123
1124 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1125 {
1126 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1127 return 0;
1128 }
1129 strcpy( buffer, config_dir );
1130 strcat( buffer, "/dosdevices/a:" );
1131 dev = buffer + strlen(buffer) - 2;
1132
1133 for (i = 0; i < 26; i++)
1134 {
1135 *dev = 'a' + i;
1136 if (!stat( buffer, &st )) ret |= (1 << i);
1137 }
1138 HeapFree( GetProcessHeap(), 0, buffer );
1139 return ret;
1140 }
1141
1142
1143 /***********************************************************************
1144 * GetLogicalDriveStringsA (KERNEL32.@)
1145 */
1146 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1147 {
1148 DWORD drives = GetLogicalDrives();
1149 UINT drive, count;
1150
1151 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1152 if ((count * 4) + 1 > len) return count * 4 + 1;
1153
1154 for (drive = 0; drive < 26; drive++)
1155 {
1156 if (drives & (1 << drive))
1157 {
1158 *buffer++ = 'a' + drive;
1159 *buffer++ = ':';
1160 *buffer++ = '\\';
1161 *buffer++ = 0;
1162 }
1163 }
1164 *buffer = 0;
1165 return count * 4;
1166 }
1167
1168
1169 /***********************************************************************
1170 * GetLogicalDriveStringsW (KERNEL32.@)
1171 */
1172 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1173 {
1174 DWORD drives = GetLogicalDrives();
1175 UINT drive, count;
1176
1177 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1178 if ((count * 4) + 1 > len) return count * 4 + 1;
1179
1180 for (drive = 0; drive < 26; drive++)
1181 {
1182 if (drives & (1 << drive))
1183 {
1184 *buffer++ = 'a' + drive;
1185 *buffer++ = ':';
1186 *buffer++ = '\\';
1187 *buffer++ = 0;
1188 }
1189 }
1190 *buffer = 0;
1191 return count * 4;
1192 }
1193
1194
1195 /***********************************************************************
1196 * GetDriveTypeW (KERNEL32.@)
1197 *
1198 * Returns the type of the disk drive specified. If root is NULL the
1199 * root of the current directory is used.
1200 *
1201 * RETURNS
1202 *
1203 * Type of drive (from Win32 SDK):
1204 *
1205 * DRIVE_UNKNOWN unable to find out anything about the drive
1206 * DRIVE_NO_ROOT_DIR nonexistent root dir
1207 * DRIVE_REMOVABLE the disk can be removed from the machine
1208 * DRIVE_FIXED the disk cannot be removed from the machine
1209 * DRIVE_REMOTE network disk
1210 * DRIVE_CDROM CDROM drive
1211 * DRIVE_RAMDISK virtual disk in RAM
1212 */
1213 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1214 {
1215 FILE_FS_DEVICE_INFORMATION info;
1216 IO_STATUS_BLOCK io;
1217 NTSTATUS status;
1218 HANDLE handle;
1219 UINT ret;
1220
1221 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1222
1223 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1224 NtClose( handle );
1225 if (status != STATUS_SUCCESS)
1226 {
1227 SetLastError( RtlNtStatusToDosError(status) );
1228 ret = DRIVE_UNKNOWN;
1229 }
1230 else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1231 {
1232 switch (info.DeviceType)
1233 {
1234 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1235 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1236 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1237 case FILE_DEVICE_DISK_FILE_SYSTEM:
1238 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1239 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1240 else ret = DRIVE_FIXED;
1241 break;
1242 default:
1243 ret = DRIVE_UNKNOWN;
1244 break;
1245 }
1246 }
1247 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1248 return ret;
1249 }
1250
1251
1252 /***********************************************************************
1253 * GetDriveTypeA (KERNEL32.@)
1254 *
1255 * See GetDriveTypeW.
1256 */
1257 UINT WINAPI GetDriveTypeA( LPCSTR root )
1258 {
1259 WCHAR *rootW = NULL;
1260
1261 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1262 return GetDriveTypeW( rootW );
1263 }
1264
1265
1266 /***********************************************************************
1267 * GetDiskFreeSpaceExW (KERNEL32.@)
1268 *
1269 * This function is used to acquire the size of the available and
1270 * total space on a logical volume.
1271 *
1272 * RETURNS
1273 *
1274 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1275 * detailed error information.
1276 *
1277 */
1278 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1279 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1280 {
1281 FILE_FS_SIZE_INFORMATION info;
1282 IO_STATUS_BLOCK io;
1283 NTSTATUS status;
1284 HANDLE handle;
1285 UINT units;
1286
1287 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1288
1289 if (!open_device_root( root, &handle )) return FALSE;
1290
1291 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1292 NtClose( handle );
1293 if (status != STATUS_SUCCESS)
1294 {
1295 SetLastError( RtlNtStatusToDosError(status) );
1296 return FALSE;
1297 }
1298
1299 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1300 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1301 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1302 /* FIXME: this one should take quotas into account */
1303 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1304 return TRUE;
1305 }
1306
1307
1308 /***********************************************************************
1309 * GetDiskFreeSpaceExA (KERNEL32.@)
1310 *
1311 * See GetDiskFreeSpaceExW.
1312 */
1313 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1314 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1315 {
1316 WCHAR *rootW = NULL;
1317
1318 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1319 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1320 }
1321
1322
1323 /***********************************************************************
1324 * GetDiskFreeSpaceW (KERNEL32.@)
1325 */
1326 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1327 LPDWORD sector_bytes, LPDWORD free_clusters,
1328 LPDWORD total_clusters )
1329 {
1330 FILE_FS_SIZE_INFORMATION info;
1331 IO_STATUS_BLOCK io;
1332 NTSTATUS status;
1333 HANDLE handle;
1334 UINT units;
1335
1336 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1337 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1338
1339 if (!open_device_root( root, &handle )) return FALSE;
1340
1341 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1342 NtClose( handle );
1343 if (status != STATUS_SUCCESS)
1344 {
1345 SetLastError( RtlNtStatusToDosError(status) );
1346 return FALSE;
1347 }
1348
1349 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1350
1351 if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
1352 /* cap the size and available at 2GB as per specs */
1353 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
1354 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1355 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1356 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1357 }
1358 /* nr. of clusters is always <= 65335 */
1359 while( info.TotalAllocationUnits.QuadPart > 65535 ) {
1360 info.TotalAllocationUnits.QuadPart /= 2;
1361 info.AvailableAllocationUnits.QuadPart /= 2;
1362 info.SectorsPerAllocationUnit *= 2;
1363 }
1364 }
1365
1366 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1367 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1368 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1369 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1370 return TRUE;
1371 }
1372
1373
1374 /***********************************************************************
1375 * GetDiskFreeSpaceA (KERNEL32.@)
1376 */
1377 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1378 LPDWORD sector_bytes, LPDWORD free_clusters,
1379 LPDWORD total_clusters )
1380 {
1381 WCHAR *rootW = NULL;
1382
1383 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1384 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1385 }
1386
1387 /***********************************************************************
1388 * GetVolumePathNameA (KERNEL32.@)
1389 */
1390 BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
1391 {
1392 FIXME("(%s, %p, %d), stub!\n", debugstr_a(filename), volumepathname, buflen);
1393 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1394 return FALSE;
1395 }
1396
1397 /***********************************************************************
1398 * GetVolumePathNameW (KERNEL32.@)
1399 */
1400 BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
1401 {
1402 FIXME("(%s, %p, %d), stub!\n", debugstr_w(filename), volumepathname, buflen);
1403 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1404 return FALSE;
1405 }
1406
1407 /***********************************************************************
1408 * FindFirstVolumeA (KERNEL32.@)
1409 */
1410 HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
1411 {
1412 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1413 HANDLE handle = FindFirstVolumeW( buffer, len );
1414
1415 if (handle != INVALID_HANDLE_VALUE)
1416 {
1417 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
1418 {
1419 FindVolumeClose( handle );
1420 handle = INVALID_HANDLE_VALUE;
1421 }
1422 }
1423 HeapFree( GetProcessHeap(), 0, buffer );
1424 return handle;
1425 }
1426
1427 /***********************************************************************
1428 * FindFirstVolumeW (KERNEL32.@)
1429 */
1430 HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
1431 {
1432 DWORD size = 1024;
1433 HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
1434 NULL, OPEN_EXISTING, 0, 0 );
1435 if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
1436
1437 for (;;)
1438 {
1439 MOUNTMGR_MOUNT_POINT input;
1440 MOUNTMGR_MOUNT_POINTS *output;
1441
1442 if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
1443 {
1444 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1445 break;
1446 }
1447 memset( &input, 0, sizeof(input) );
1448
1449 if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
1450 output, size, NULL, NULL ))
1451 {
1452 if (GetLastError() != ERROR_MORE_DATA) break;
1453 size = output->Size;
1454 HeapFree( GetProcessHeap(), 0, output );
1455 continue;
1456 }
1457 CloseHandle( mgr );
1458 /* abuse the Size field to store the current index */
1459 output->Size = 0;
1460 if (!FindNextVolumeW( output, volume, len ))
1461 {
1462 HeapFree( GetProcessHeap(), 0, output );
1463 return INVALID_HANDLE_VALUE;
1464 }
1465 return (HANDLE)output;
1466 }
1467 CloseHandle( mgr );
1468 return INVALID_HANDLE_VALUE;
1469 }
1470
1471 /***********************************************************************
1472 * FindNextVolumeA (KERNEL32.@)
1473 */
1474 BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
1475 {
1476 WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1477 BOOL ret;
1478
1479 if ((ret = FindNextVolumeW( handle, buffer, len )))
1480 {
1481 if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
1482 }
1483 HeapFree( GetProcessHeap(), 0, buffer );
1484 return ret;
1485 }
1486
1487 /***********************************************************************
1488 * FindNextVolumeW (KERNEL32.@)
1489 */
1490 BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
1491 {
1492 MOUNTMGR_MOUNT_POINTS *data = handle;
1493
1494 while (data->Size < data->NumberOfMountPoints)
1495 {
1496 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
1497 WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
1498 DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
1499 data->Size++;
1500 /* skip non-volumes */
1501 if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
1502 if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
1503 {
1504 SetLastError( ERROR_FILENAME_EXCED_RANGE );
1505 return FALSE;
1506 }
1507 memcpy( volume, link, size );
1508 volume[1] = '\\'; /* map \??\ to \\?\ */
1509 volume[size / sizeof(WCHAR)] = '\\'; /* Windows appends a backslash */
1510 volume[size / sizeof(WCHAR) + 1] = 0;
1511 TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
1512 return TRUE;
1513 }
1514 SetLastError( ERROR_NO_MORE_FILES );
1515 return FALSE;
1516 }
1517
1518 /***********************************************************************
1519 * FindVolumeClose (KERNEL32.@)
1520 */
1521 BOOL WINAPI FindVolumeClose(HANDLE handle)
1522 {
1523 return HeapFree( GetProcessHeap(), 0, handle );
1524 }
1525
1526 /***********************************************************************
1527 * FindFirstVolumeMountPointA (KERNEL32.@)
1528 */
1529 HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
1530 {
1531 FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
1532 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1533 return INVALID_HANDLE_VALUE;
1534 }
1535
1536 /***********************************************************************
1537 * FindFirstVolumeMountPointW (KERNEL32.@)
1538 */
1539 HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
1540 {
1541 FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
1542 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1543 return INVALID_HANDLE_VALUE;
1544 }
1545
1546 /***********************************************************************
1547 * FindVolumeMountPointClose (KERNEL32.@)
1548 */
1549 BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
1550 {
1551 FIXME("(%p), stub!\n", h);
1552 return FALSE;
1553 }
Windows API implementation