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Fixed regression in QueryDosDeviceA when passed a NULL device name.
[wine/wine-kai.git] / dlls / kernel / volume.c
blobf464c6f6cdc3e5840e59f22d042146fd29914d19
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 "windef.h"
33 #include "winbase.h"
34 #include "winreg.h"
35 #include "winnls.h"
36 #include "winternl.h"
37 #include "ntstatus.h"
38 #include "winioctl.h"
39 #include "ntddstor.h"
40 #include "ntddcdrm.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
166 /* fetch the type of a drive from the registry */
167 static UINT get_registry_drive_type( const WCHAR *root )
168 {
169 static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
170 'S','o','f','t','w','a','r','e','\\',
171 'W','i','n','e','\\',
172 'D','r','i','v','e','s',0 };
173 OBJECT_ATTRIBUTES attr;
174 UNICODE_STRING nameW;
175 HKEY hkey;
176 DWORD dummy;
177 UINT ret = DRIVE_UNKNOWN;
178 char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
179 WCHAR driveW[] = {'A',':',0};
180
181 attr.Length = sizeof(attr);
182 attr.RootDirectory = 0;
183 attr.ObjectName = &nameW;
184 attr.Attributes = 0;
185 attr.SecurityDescriptor = NULL;
186 attr.SecurityQualityOfService = NULL;
187 RtlInitUnicodeString( &nameW, drive_types_keyW );
188 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
189
190 if (root) driveW[0] = root[0];
191 else
192 {
193 WCHAR path[MAX_PATH];
194 GetCurrentDirectoryW( MAX_PATH, path );
195 driveW[0] = path[0];
196 }
197
198 RtlInitUnicodeString( &nameW, driveW );
199 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
200 {
201 unsigned int i;
202 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
203
204 for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
205 {
206 if (!strcmpiW( data, drive_types[i] ))
207 {
208 ret = i;
209 break;
210 }
211 }
212 }
213 NtClose( hkey );
214 return ret;
215 }
216
217
218 /* create symlinks for the DOS drives; helper for VOLUME_CreateDevices */
219 static int create_drives( int devices_only )
220 {
221 static const WCHAR PathW[] = {'P','a','t','h',0};
222 static const WCHAR DeviceW[] = {'D','e','v','i','c','e',0};
223 WCHAR driveW[] = {'M','a','c','h','i','n','e','\\','S','o','f','t','w','a','r','e','\\',
224 'W','i','n','e','\\','W','i','n','e','\\',
225 'C','o','n','f','i','g','\\','D','r','i','v','e',' ','A',0};
226 OBJECT_ATTRIBUTES attr;
227 UNICODE_STRING nameW;
228 char tmp[1024*sizeof(WCHAR) + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
229 char dest[1024];
230 WCHAR *p, name[3];
231 HKEY hkey;
232 DWORD dummy;
233 int i, count = 0;
234
235 attr.Length = sizeof(attr);
236 attr.RootDirectory = 0;
237 attr.ObjectName = &nameW;
238 attr.Attributes = 0;
239 attr.SecurityDescriptor = NULL;
240 attr.SecurityQualityOfService = NULL;
241
242 /* create symlinks for the drive roots */
243
244 if (!devices_only) for (i = 0; i < 26; i++)
245 {
246 RtlInitUnicodeString( &nameW, driveW );
247 nameW.Buffer[(nameW.Length / sizeof(WCHAR)) - 1] = 'A' + i;
248 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) continue;
249
250 RtlInitUnicodeString( &nameW, PathW );
251 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
252 {
253 WCHAR path[1024];
254 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
255 ExpandEnvironmentStringsW( data, path, sizeof(path)/sizeof(WCHAR) );
256
257 p = path + strlenW(path) - 1;
258 while ((p > path) && (*p == '/')) *p-- = '\0';
259
260 name[0] = 'a' + i;
261 name[1] = ':';
262 name[2] = 0;
263
264 if (path[0] != '/')
265 {
266 /* relative paths are relative to config dir */
267 memmove( path + 3, path, (strlenW(path) + 1) * sizeof(WCHAR) );
268 path[0] = '.';
269 path[1] = '.';
270 path[2] = '/';
271 }
272 if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, name, path ))
273 {
274 WideCharToMultiByte(CP_UNIXCP, 0, path, -1, dest, sizeof(dest), NULL, NULL);
275 MESSAGE( "Created symlink %s/dosdevices/%c: -> %s\n",
276 wine_get_config_dir(), 'a' + i, dest );
277 count++;
278 }
279 }
280 NtClose( hkey );
281 }
282
283 /* create symlinks for the drive devices */
284
285 for (i = 0; i < 26; i++)
286 {
287 RtlInitUnicodeString( &nameW, driveW );
288 nameW.Buffer[(nameW.Length / sizeof(WCHAR)) - 1] = 'A' + i;
289 if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) continue;
290
291 RtlInitUnicodeString( &nameW, DeviceW );
292 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
293 {
294 char *path, *p;
295 WCHAR devname[] = {'A',':',':',0 };
296 WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
297 WideCharToMultiByte(CP_UNIXCP, 0, data, -1, dest, sizeof(dest), NULL, NULL);
298 path = get_dos_device_path( devname );
299 p = path + strlen(path);
300 p[-3] = 'a' + i;
301 if (!symlink( dest, path ))
302 {
303 MESSAGE( "Created symlink %s/dosdevices/%c:: -> %s\n",
304 wine_get_config_dir(), 'a' + i, dest );
305 count++;
306 }
307 HeapFree( GetProcessHeap(), 0, path );
308 }
309 NtClose( hkey );
310 }
311
312 return count;
313 }
314
315
316 /***********************************************************************
317 * VOLUME_CreateDevices
318 *
319 * Create the device files for the new device naming scheme.
320 * Should go away after a transition period.
321 */
322 void VOLUME_CreateDevices(void)
323 {
324 const char *config_dir = wine_get_config_dir();
325 char *buffer;
326 int i, count = 0;
327
328 if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
329 strlen(config_dir) + sizeof("/dosdevices/a::") )))
330 return;
331
332 strcpy( buffer, config_dir );
333 strcat( buffer, "/dosdevices" );
334
335 if (!mkdir( buffer, 0777 )) /* we created it, so now create the devices */
336 {
337 HKEY hkey;
338 DWORD dummy;
339 OBJECT_ATTRIBUTES attr;
340 UNICODE_STRING nameW;
341 WCHAR *p, *devnameW;
342 char tmp[128];
343 WCHAR com[5] = {'C','O','M','1',0};
344 WCHAR lpt[5] = {'L','P','T','1',0};
345
346 static const WCHAR serialportsW[] = {'M','a','c','h','i','n','e','\\',
347 'S','o','f','t','w','a','r','e','\\',
348 'W','i','n','e','\\','W','i','n','e','\\',
349 'C','o','n','f','i','g','\\',
350 'S','e','r','i','a','l','P','o','r','t','s',0};
351 static const WCHAR parallelportsW[] = {'M','a','c','h','i','n','e','\\',
352 'S','o','f','t','w','a','r','e','\\',
353 'W','i','n','e','\\','W','i','n','e','\\',
354 'C','o','n','f','i','g','\\',
355 'P','a','r','a','l','l','e','l','P','o','r','t','s',0};
356
357 attr.Length = sizeof(attr);
358 attr.RootDirectory = 0;
359 attr.ObjectName = &nameW;
360 attr.Attributes = 0;
361 attr.SecurityDescriptor = NULL;
362 attr.SecurityQualityOfService = NULL;
363 RtlInitUnicodeString( &nameW, serialportsW );
364
365 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
366 {
367 RtlInitUnicodeString( &nameW, com );
368 for (i = 1; i <= 9; i++)
369 {
370 com[3] = '0' + i;
371 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
372 tmp, sizeof(tmp), &dummy ))
373 {
374 devnameW = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
375 if ((p = strchrW( devnameW, ',' ))) *p = 0;
376 if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, com, devnameW ))
377 {
378 char devname[32];
379 WideCharToMultiByte(CP_UNIXCP, 0, devnameW, -1,
380 devname, sizeof(devname), NULL, NULL);
381 MESSAGE( "Created symlink %s/dosdevices/com%d -> %s\n", config_dir, i, devname );
382 count++;
383 }
384 }
385 }
386 NtClose( hkey );
387 }
388
389 RtlInitUnicodeString( &nameW, parallelportsW );
390 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
391 {
392 RtlInitUnicodeString( &nameW, lpt );
393 for (i = 1; i <= 9; i++)
394 {
395 lpt[3] = '0' + i;
396 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
397 tmp, sizeof(tmp), &dummy ))
398 {
399 devnameW = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
400 if ((p = strchrW( devnameW, ',' ))) *p = 0;
401 if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, lpt, devnameW ))
402 {
403 char devname[32];
404 WideCharToMultiByte(CP_UNIXCP, 0, devnameW, -1,
405 devname, sizeof(devname), NULL, NULL);
406 MESSAGE( "Created symlink %s/dosdevices/lpt%d -> %s\n", config_dir, i, devname );
407 count++;
408 }
409 }
410 }
411 NtClose( hkey );
412 }
413 count += create_drives( FALSE );
414 }
415 else
416 {
417 struct stat st;
418 int i;
419
420 /* it is possible that the serial/parallel devices have been created but */
421 /* not the drives; check for at least one drive symlink to catch that case */
422 strcat( buffer, "/a:" );
423 for (i = 0; i < 26; i++)
424 {
425 buffer[strlen(buffer)-2] = 'a' + i;
426 if (!lstat( buffer, &st )) break;
427 }
428 if (i == 26) count += create_drives( FALSE );
429 else
430 {
431 strcat( buffer, ":" );
432 for (i = 0; i < 26; i++)
433 {
434 buffer[strlen(buffer)-3] = 'a' + i;
435 if (!lstat( buffer, &st )) break;
436 }
437 if (i == 26) count += create_drives( TRUE );
438 }
439 }
440
441 if (count)
442 MESSAGE( "\nYou can now remove the [SerialPorts], [ParallelPorts], and [Drive] sections\n"
443 "in your configuration file, they are replaced by the above symlinks.\n\n" );
444
445 HeapFree( GetProcessHeap(), 0, buffer );
446 }
447
448
449 /******************************************************************
450 * VOLUME_FindCdRomDataBestVoldesc
451 */
452 static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
453 {
454 BYTE cur_vd_type, max_vd_type = 0;
455 BYTE buffer[16];
456 DWORD size, offs, best_offs = 0, extra_offs = 0;
457
458 for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
459 {
460 /* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
461 * the volume label is displaced forward by 8
462 */
463 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
464 if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
465 if (size != sizeof(buffer)) break;
466 /* check for non-ISO9660 signature */
467 if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
468 cur_vd_type = buffer[extra_offs];
469 if (cur_vd_type == 0xff) /* voldesc set terminator */
470 break;
471 if (cur_vd_type > max_vd_type)
472 {
473 max_vd_type = cur_vd_type;
474 best_offs = offs + extra_offs;
475 }
476 }
477 return best_offs;
478 }
479
480
481 /***********************************************************************
482 * VOLUME_ReadFATSuperblock
483 */
484 static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
485 {
486 DWORD size;
487
488 /* try a fixed disk, with a FAT partition */
489 if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
490 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
491 size != SUPERBLOCK_SIZE)
492 return FS_ERROR;
493
494 /* FIXME: do really all FAT have their name beginning with
495 * "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
496 */
497 if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
498 {
499 /* guess which type of FAT we have */
500 int reasonable;
501 unsigned int sectors,
502 sect_per_fat,
503 total_sectors,
504 num_boot_sectors,
505 num_fats,
506 num_root_dir_ents,
507 bytes_per_sector,
508 sectors_per_cluster,
509 nclust;
510 sect_per_fat = GETWORD(buff, 0x16);
511 if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
512 total_sectors = GETWORD(buff, 0x13);
513 if (!total_sectors)
514 total_sectors = GETLONG(buff, 0x20);
515 num_boot_sectors = GETWORD(buff, 0x0e);
516 num_fats = buff[0x10];
517 num_root_dir_ents = GETWORD(buff, 0x11);
518 bytes_per_sector = GETWORD(buff, 0x0b);
519 sectors_per_cluster = buff[0x0d];
520 /* check if the parameters are reasonable and will not cause
521 * arithmetic errors in the calculation */
522 reasonable = num_boot_sectors < 16 &&
523 num_fats < 16 &&
524 bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
525 sectors_per_cluster > 1;
526 if (!reasonable) return FS_UNKNOWN;
527 sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
528 (num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
529 nclust = sectors / sectors_per_cluster;
530 if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
531 !memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
532 if (nclust < 65525)
533 {
534 if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
535 !memcmp(buff+0x36, "FAT", 3))
536 return FS_FAT1216;
537 }
538 }
539 return FS_UNKNOWN;
540 }
541
542
543 /***********************************************************************
544 * VOLUME_ReadCDSuperblock
545 */
546 static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
547 {
548 DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
549
550 if (!offs) return FS_UNKNOWN;
551
552 if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
553 !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
554 size != SUPERBLOCK_SIZE)
555 return FS_ERROR;
556
557 /* check for iso9660 present */
558 if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
559 return FS_UNKNOWN;
560 }
561
562
563 /**************************************************************************
564 * VOLUME_GetSuperblockLabel
565 */
566 static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock,
567 WCHAR *label, DWORD len )
568 {
569 const BYTE *label_ptr = NULL;
570 DWORD label_len;
571
572 switch(type)
573 {
574 case FS_ERROR:
575 case FS_UNKNOWN:
576 label_len = 0;
577 break;
578 case FS_FAT1216:
579 label_ptr = superblock + 0x2b;
580 label_len = 11;
581 break;
582 case FS_FAT32:
583 label_ptr = superblock + 0x47;
584 label_len = 11;
585 break;
586 case FS_ISO9660:
587 {
588 BYTE ver = superblock[0x5a];
589
590 if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
591 ((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
592 { /* yippee, unicode */
593 unsigned int i;
594
595 if (len > 17) len = 17;
596 for (i = 0; i < len-1; i++)
597 label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
598 label[i] = 0;
599 while (i && label[i-1] == ' ') label[--i] = 0;
600 return;
601 }
602 label_ptr = superblock + 40;
603 label_len = 32;
604 break;
605 }
606 }
607 if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
608 &label_len, label_ptr, label_len );
609 label_len /= sizeof(WCHAR);
610 label[label_len] = 0;
611 while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
612 }
613
614
615 /**************************************************************************
616 * VOLUME_SetSuperblockLabel
617 */
618 static BOOL VOLUME_SetSuperblockLabel( enum fs_type type, HANDLE handle, const WCHAR *label )
619 {
620 BYTE label_data[11];
621 DWORD offset, len;
622
623 switch(type)
624 {
625 case FS_FAT1216:
626 offset = 0x2b;
627 break;
628 case FS_FAT32:
629 offset = 0x47;
630 break;
631 default:
632 SetLastError( ERROR_ACCESS_DENIED );
633 return FALSE;
634 }
635 RtlUnicodeToMultiByteN( label_data, sizeof(label_data), &len,
636 label, strlenW(label) * sizeof(WCHAR) );
637 if (len < sizeof(label_data))
638 memset( label_data + len, ' ', sizeof(label_data) - len );
639
640 return (SetFilePointer( handle, offset, NULL, FILE_BEGIN ) == offset &&
641 WriteFile( handle, label_data, sizeof(label_data), &len, NULL ));
642 }
643
644
645 /**************************************************************************
646 * VOLUME_GetSuperblockSerial
647 */
648 static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock )
649 {
650 switch(type)
651 {
652 case FS_ERROR:
653 case FS_UNKNOWN:
654 break;
655 case FS_FAT1216:
656 return GETLONG( superblock, 0x27 );
657 case FS_FAT32:
658 return GETLONG( superblock, 0x33 );
659 case FS_ISO9660:
660 {
661 BYTE sum[4];
662 int i;
663
664 sum[0] = sum[1] = sum[2] = sum[3] = 0;
665 for (i = 0; i < 2048; i += 4)
666 {
667 /* DON'T optimize this into DWORD !! (breaks overflow) */
668 sum[0] += superblock[i+0];
669 sum[1] += superblock[i+1];
670 sum[2] += superblock[i+2];
671 sum[3] += superblock[i+3];
672 }
673 /*
674 * OK, another braindead one... argh. Just believe it.
675 * Me$$ysoft chose to reverse the serial number in NT4/W2K.
676 * It's true and nobody will ever be able to change it.
677 */
678 if (GetVersion() & 0x80000000)
679 return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
680 else
681 return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
682 }
683 }
684 return 0;
685 }
686
687
688 /**************************************************************************
689 * VOLUME_GetAudioCDSerial
690 */
691 static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
692 {
693 DWORD serial = 0;
694 int i;
695
696 for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
697 serial += ((toc->TrackData[i].Address[1] << 16) |
698 (toc->TrackData[i].Address[2] << 8) |
699 toc->TrackData[i].Address[3]);
700
701 /*
702 * dwStart, dwEnd collect the beginning and end of the disc respectively, in
703 * frames.
704 * There it is collected for correcting the serial when there are less than
705 * 3 tracks.
706 */
707 if (toc->LastTrack - toc->FirstTrack + 1 < 3)
708 {
709 DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
710 DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
711 serial += dwEnd - dwStart;
712 }
713 return serial;
714 }
715
716
717 /***********************************************************************
718 * GetVolumeInformationW (KERNEL32.@)
719 */
720 BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
721 DWORD *serial, DWORD *filename_len, DWORD *flags,
722 LPWSTR fsname, DWORD fsname_len )
723 {
724 static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
725 static const WCHAR fatW[] = {'F','A','T',0};
726 static const WCHAR ntfsW[] = {'N','T','F','S',0};
727 static const WCHAR cdfsW[] = {'C','D','F','S',0};
728
729 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
730 HANDLE handle;
731 enum fs_type type = FS_UNKNOWN;
732
733 if (!root)
734 {
735 WCHAR path[MAX_PATH];
736 GetCurrentDirectoryW( MAX_PATH, path );
737 device[4] = path[0];
738 }
739 else
740 {
741 if (!root[0] || root[1] != ':')
742 {
743 SetLastError( ERROR_INVALID_NAME );
744 return FALSE;
745 }
746 device[4] = root[0];
747 }
748
749 /* try to open the device */
750
751 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
752 NULL, OPEN_EXISTING, 0, 0 );
753 if (handle != INVALID_HANDLE_VALUE)
754 {
755 BYTE superblock[SUPERBLOCK_SIZE];
756 CDROM_TOC toc;
757 DWORD br;
758
759 /* check for audio CD */
760 /* FIXME: we only check the first track for now */
761 if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
762 {
763 if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
764 {
765 TRACE( "%s: found audio CD\n", debugstr_w(device) );
766 if (label) lstrcpynW( label, audiocdW, label_len );
767 if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
768 CloseHandle( handle );
769 type = FS_ISO9660;
770 goto fill_fs_info;
771 }
772 type = VOLUME_ReadCDSuperblock( handle, superblock );
773 }
774 else
775 {
776 type = VOLUME_ReadFATSuperblock( handle, superblock );
777 if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
778 }
779 CloseHandle( handle );
780 TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
781 if (type == FS_ERROR) return FALSE;
782
783 if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len );
784 if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock );
785 goto fill_fs_info;
786 }
787 else TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
788
789 /* we couldn't open the device, fallback to default strategy */
790
791 switch(GetDriveTypeW( root ))
792 {
793 case DRIVE_UNKNOWN:
794 case DRIVE_NO_ROOT_DIR:
795 SetLastError( ERROR_NOT_READY );
796 return FALSE;
797 case DRIVE_REMOVABLE:
798 case DRIVE_FIXED:
799 case DRIVE_REMOTE:
800 case DRIVE_RAMDISK:
801 type = FS_UNKNOWN;
802 break;
803 case DRIVE_CDROM:
804 type = FS_ISO9660;
805 break;
806 }
807
808 if (label && label_len)
809 {
810 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
811
812 labelW[0] = device[4];
813 handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
814 OPEN_EXISTING, 0, 0 );
815 if (handle != INVALID_HANDLE_VALUE)
816 {
817 char buffer[256], *p;
818 DWORD size;
819
820 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
821 CloseHandle( handle );
822 p = buffer + size;
823 while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
824 *p = 0;
825 if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, label_len ))
826 label[label_len-1] = 0;
827 }
828 else label[0] = 0;
829 }
830 if (serial)
831 {
832 WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
833
834 serialW[0] = device[4];
835 handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
836 OPEN_EXISTING, 0, 0 );
837 if (handle != INVALID_HANDLE_VALUE)
838 {
839 char buffer[32];
840 DWORD size;
841
842 if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
843 CloseHandle( handle );
844 buffer[size] = 0;
845 *serial = strtoul( buffer, NULL, 16 );
846 }
847 else *serial = 0;
848 }
849
850 fill_fs_info: /* now fill in the information that depends on the file system type */
851
852 switch(type)
853 {
854 case FS_ISO9660:
855 if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
856 if (filename_len) *filename_len = 221;
857 if (flags) *flags = FILE_READ_ONLY_VOLUME;
858 break;
859 case FS_FAT1216:
860 case FS_FAT32:
861 if (fsname) lstrcpynW( fsname, fatW, fsname_len );
862 if (filename_len) *filename_len = 255;
863 if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
864 break;
865 default:
866 if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
867 if (filename_len) *filename_len = 255;
868 if (flags) *flags = FILE_CASE_PRESERVED_NAMES;
869 break;
870 }
871 return TRUE;
872 }
873
874
875 /***********************************************************************
876 * GetVolumeInformationA (KERNEL32.@)
877 */
878 BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
879 DWORD label_len, DWORD *serial,
880 DWORD *filename_len, DWORD *flags,
881 LPSTR fsname, DWORD fsname_len )
882 {
883 WCHAR *rootW = NULL;
884 LPWSTR labelW, fsnameW;
885 BOOL ret;
886
887 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
888
889 labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
890 fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
891
892 if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
893 filename_len, flags, fsnameW, fsname_len)))
894 {
895 if (label) FILE_name_WtoA( labelW, -1, label, label_len );
896 if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
897 }
898
899 HeapFree( GetProcessHeap(), 0, labelW );
900 HeapFree( GetProcessHeap(), 0, fsnameW );
901 return ret;
902 }
903
904
905
906 /***********************************************************************
907 * SetVolumeLabelW (KERNEL32.@)
908 */
909 BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
910 {
911 WCHAR device[] = {'\\','\\','.','\\','A',':',0};
912 HANDLE handle;
913 enum fs_type type = FS_UNKNOWN;
914
915 if (!root)
916 {
917 WCHAR path[MAX_PATH];
918 GetCurrentDirectoryW( MAX_PATH, path );
919 device[4] = path[0];
920 }
921 else
922 {
923 if (!root[0] || root[1] != ':')
924 {
925 SetLastError( ERROR_INVALID_NAME );
926 return FALSE;
927 }
928 device[4] = root[0];
929 }
930
931 /* try to open the device */
932
933 handle = CreateFileW( device, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE,
934 NULL, OPEN_EXISTING, 0, 0 );
935 if (handle == INVALID_HANDLE_VALUE)
936 {
937 /* try read-only */
938 handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
939 NULL, OPEN_EXISTING, 0, 0 );
940 if (handle != INVALID_HANDLE_VALUE)
941 {
942 /* device can be read but not written, return error */
943 CloseHandle( handle );
944 SetLastError( ERROR_ACCESS_DENIED );
945 return FALSE;
946 }
947 }
948
949 if (handle != INVALID_HANDLE_VALUE)
950 {
951 BYTE superblock[SUPERBLOCK_SIZE];
952 BOOL ret;
953
954 type = VOLUME_ReadFATSuperblock( handle, superblock );
955 ret = VOLUME_SetSuperblockLabel( type, handle, label );
956 CloseHandle( handle );
957 return ret;
958 }
959 else
960 {
961 TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
962 if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
963 }
964
965 /* we couldn't open the device, fallback to default strategy */
966
967 switch(GetDriveTypeW( root ))
968 {
969 case DRIVE_UNKNOWN:
970 case DRIVE_NO_ROOT_DIR:
971 SetLastError( ERROR_NOT_READY );
972 break;
973 case DRIVE_REMOVABLE:
974 case DRIVE_FIXED:
975 {
976 WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
977
978 labelW[0] = device[4];
979 handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
980 CREATE_ALWAYS, 0, 0 );
981 if (handle != INVALID_HANDLE_VALUE)
982 {
983 char buffer[64];
984 DWORD size;
985
986 if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer), NULL, NULL ))
987 buffer[sizeof(buffer)-1] = 0;
988 WriteFile( handle, buffer, strlen(buffer), &size, NULL );
989 CloseHandle( handle );
990 return TRUE;
991 }
992 break;
993 }
994 case DRIVE_REMOTE:
995 case DRIVE_RAMDISK:
996 case DRIVE_CDROM:
997 SetLastError( ERROR_ACCESS_DENIED );
998 break;
999 }
1000 return FALSE;
1001 }
1002
1003 /***********************************************************************
1004 * SetVolumeLabelA (KERNEL32.@)
1005 */
1006 BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
1007 {
1008 WCHAR *rootW = NULL, *volnameW = NULL;
1009 BOOL ret;
1010
1011 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1012 if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
1013 ret = SetVolumeLabelW( rootW, volnameW );
1014 HeapFree( GetProcessHeap(), 0, volnameW );
1015 return ret;
1016 }
1017
1018
1019 /***********************************************************************
1020 * GetVolumeNameForVolumeMountPointW (KERNEL32.@)
1021 */
1022 BOOL WINAPI GetVolumeNameForVolumeMountPointW(LPCWSTR str, LPWSTR dst, DWORD size)
1023 {
1024 FIXME("(%s, %p, %lx): stub\n", debugstr_w(str), dst, size);
1025 return 0;
1026 }
1027
1028
1029 /***********************************************************************
1030 * DefineDosDeviceW (KERNEL32.@)
1031 */
1032 BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
1033 {
1034 DWORD len, dosdev;
1035 BOOL ret = FALSE;
1036 char *path = NULL, *target, *p;
1037
1038 if (!(flags & DDD_REMOVE_DEFINITION))
1039 {
1040 if (!(flags & DDD_RAW_TARGET_PATH))
1041 {
1042 FIXME( "(0x%08lx,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
1043 flags, debugstr_w(devname), debugstr_w(targetpath) );
1044 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1045 return FALSE;
1046 }
1047
1048 len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
1049 if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
1050 {
1051 WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
1052 for (p = target; *p; p++) if (*p == '\\') *p = '/';
1053 }
1054 else
1055 {
1056 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1057 return FALSE;
1058 }
1059 }
1060 else target = NULL;
1061
1062 /* first check for a DOS device */
1063
1064 if ((dosdev = RtlIsDosDeviceName_U( devname )))
1065 {
1066 WCHAR name[5];
1067
1068 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1069 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1070 path = get_dos_device_path( name );
1071 }
1072 else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
1073 {
1074 path = get_dos_device_path( devname );
1075 }
1076 else SetLastError( ERROR_FILE_NOT_FOUND );
1077
1078 if (path)
1079 {
1080 if (target)
1081 {
1082 TRACE( "creating symlink %s -> %s\n", path, target );
1083 unlink( path );
1084 if (!symlink( target, path )) ret = TRUE;
1085 else FILE_SetDosError();
1086 }
1087 else
1088 {
1089 TRACE( "removing symlink %s\n", path );
1090 if (!unlink( path )) ret = TRUE;
1091 else FILE_SetDosError();
1092 }
1093 HeapFree( GetProcessHeap(), 0, path );
1094 }
1095 HeapFree( GetProcessHeap(), 0, target );
1096 return ret;
1097 }
1098
1099
1100 /***********************************************************************
1101 * DefineDosDeviceA (KERNEL32.@)
1102 */
1103 BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
1104 {
1105 WCHAR *devW, *targetW = NULL;
1106 BOOL ret;
1107
1108 if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
1109 if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
1110 ret = DefineDosDeviceW(flags, devW, targetW);
1111 HeapFree( GetProcessHeap(), 0, targetW );
1112 return ret;
1113 }
1114
1115
1116 /***********************************************************************
1117 * QueryDosDeviceW (KERNEL32.@)
1118 *
1119 * returns array of strings terminated by \0, terminated by \0
1120 */
1121 DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
1122 {
1123 static const WCHAR auxW[] = {'A','U','X',0};
1124 static const WCHAR nulW[] = {'N','U','L',0};
1125 static const WCHAR prnW[] = {'P','R','N',0};
1126 static const WCHAR comW[] = {'C','O','M',0};
1127 static const WCHAR lptW[] = {'L','P','T',0};
1128 static const WCHAR rootW[] = {'A',':','\\',0};
1129 static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
1130 static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
1131 static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
1132
1133 UNICODE_STRING nt_name;
1134 ANSI_STRING unix_name;
1135 WCHAR nt_buffer[10];
1136 NTSTATUS status;
1137
1138 if (!bufsize)
1139 {
1140 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1141 return 0;
1142 }
1143
1144 if (devname)
1145 {
1146 WCHAR *p, name[5];
1147 char *path, *link;
1148 DWORD dosdev, ret = 0;
1149
1150 if ((dosdev = RtlIsDosDeviceName_U( devname )))
1151 {
1152 memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
1153 name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
1154 }
1155 else if (devname[0] && devname[1] == ':' && !devname[2])
1156 {
1157 memcpy( name, devname, 3 * sizeof(WCHAR) );
1158 }
1159 else
1160 {
1161 SetLastError( ERROR_BAD_PATHNAME );
1162 return 0;
1163 }
1164
1165 if (!(path = get_dos_device_path( name ))) return 0;
1166 link = read_symlink( path );
1167 HeapFree( GetProcessHeap(), 0, path );
1168
1169 if (link)
1170 {
1171 ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
1172 HeapFree( GetProcessHeap(), 0, link );
1173 }
1174 else if (dosdev) /* look for device defaults */
1175 {
1176 if (!strcmpiW( name, auxW ))
1177 {
1178 if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
1179 {
1180 memcpy( target, com1W, sizeof(com1W) );
1181 ret = sizeof(com1W)/sizeof(WCHAR);
1182 }
1183 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1184 return ret;
1185 }
1186 if (!strcmpiW( name, prnW ))
1187 {
1188 if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
1189 {
1190 memcpy( target, lpt1W, sizeof(lpt1W) );
1191 ret = sizeof(lpt1W)/sizeof(WCHAR);
1192 }
1193 else SetLastError( ERROR_INSUFFICIENT_BUFFER );
1194 return ret;
1195 }
1196
1197 nt_buffer[0] = '\\';
1198 nt_buffer[1] = '?';
1199 nt_buffer[2] = '?';
1200 nt_buffer[3] = '\\';
1201 strcpyW( nt_buffer + 4, name );
1202 RtlInitUnicodeString( &nt_name, nt_buffer );
1203 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
1204 if (status) SetLastError( RtlNtStatusToDosError(status) );
1205 else
1206 {
1207 ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
1208 RtlFreeAnsiString( &unix_name );
1209 }
1210 }
1211
1212 if (ret)
1213 {
1214 if (ret < bufsize) target[ret++] = 0; /* add an extra null */
1215 for (p = target; *p; p++) if (*p == '/') *p = '\\';
1216 }
1217
1218 return ret;
1219 }
1220 else /* return a list of all devices */
1221 {
1222 WCHAR *p = target;
1223 int i;
1224
1225 if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
1226 {
1227 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1228 return 0;
1229 }
1230
1231 memcpy( p, auxW, sizeof(auxW) );
1232 p += sizeof(auxW) / sizeof(WCHAR);
1233 memcpy( p, nulW, sizeof(nulW) );
1234 p += sizeof(nulW) / sizeof(WCHAR);
1235 memcpy( p, prnW, sizeof(prnW) );
1236 p += sizeof(prnW) / sizeof(WCHAR);
1237
1238 strcpyW( nt_buffer, com0W );
1239 RtlInitUnicodeString( &nt_name, nt_buffer );
1240
1241 for (i = 1; i <= 9; i++)
1242 {
1243 nt_buffer[7] = '0' + i;
1244 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1245 {
1246 RtlFreeAnsiString( &unix_name );
1247 if (p + 5 >= target + bufsize)
1248 {
1249 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1250 return 0;
1251 }
1252 strcpyW( p, comW );
1253 p[3] = '0' + i;
1254 p[4] = 0;
1255 p += 5;
1256 }
1257 }
1258 strcpyW( nt_buffer + 4, lptW );
1259 for (i = 1; i <= 9; i++)
1260 {
1261 nt_buffer[7] = '0' + i;
1262 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1263 {
1264 RtlFreeAnsiString( &unix_name );
1265 if (p + 5 >= target + bufsize)
1266 {
1267 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1268 return 0;
1269 }
1270 strcpyW( p, lptW );
1271 p[3] = '0' + i;
1272 p[4] = 0;
1273 p += 5;
1274 }
1275 }
1276
1277 strcpyW( nt_buffer + 4, rootW );
1278 RtlInitUnicodeString( &nt_name, nt_buffer );
1279
1280 for (i = 0; i < 26; i++)
1281 {
1282 nt_buffer[4] = 'a' + i;
1283 if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
1284 {
1285 RtlFreeAnsiString( &unix_name );
1286 if (p + 3 >= target + bufsize)
1287 {
1288 SetLastError( ERROR_INSUFFICIENT_BUFFER );
1289 return 0;
1290 }
1291 *p++ = 'A' + i;
1292 *p++ = ':';
1293 *p++ = 0;
1294 }
1295 }
1296 *p++ = 0; /* terminating null */
1297 return p - target;
1298 }
1299 }
1300
1301
1302 /***********************************************************************
1303 * QueryDosDeviceA (KERNEL32.@)
1304 *
1305 * returns array of strings terminated by \0, terminated by \0
1306 */
1307 DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
1308 {
1309 DWORD ret = 0, retW;
1310 WCHAR *devnameW = NULL;
1311 LPWSTR targetW;
1312
1313 if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
1314
1315 targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
1316 if (!targetW)
1317 {
1318 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1319 return 0;
1320 }
1321
1322 retW = QueryDosDeviceW(devnameW, targetW, bufsize);
1323
1324 ret = FILE_name_WtoA( targetW, retW, target, bufsize );
1325
1326 HeapFree(GetProcessHeap(), 0, targetW);
1327 return ret;
1328 }
1329
1330
1331 /***********************************************************************
1332 * GetLogicalDrives (KERNEL32.@)
1333 */
1334 DWORD WINAPI GetLogicalDrives(void)
1335 {
1336 const char *config_dir = wine_get_config_dir();
1337 struct stat st;
1338 char *buffer, *dev;
1339 DWORD ret = 0;
1340 int i;
1341
1342 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
1343 {
1344 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
1345 return 0;
1346 }
1347 strcpy( buffer, config_dir );
1348 strcat( buffer, "/dosdevices/a:" );
1349 dev = buffer + strlen(buffer) - 2;
1350
1351 for (i = 0; i < 26; i++)
1352 {
1353 *dev = 'a' + i;
1354 if (!stat( buffer, &st )) ret |= (1 << i);
1355 }
1356 HeapFree( GetProcessHeap(), 0, buffer );
1357 return ret;
1358 }
1359
1360
1361 /***********************************************************************
1362 * GetLogicalDriveStringsA (KERNEL32.@)
1363 */
1364 UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
1365 {
1366 DWORD drives = GetLogicalDrives();
1367 UINT drive, count;
1368
1369 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1370 if ((count * 4) + 1 > len) return count * 4 + 1;
1371
1372 for (drive = 0; drive < 26; drive++)
1373 {
1374 if (drives & (1 << drive))
1375 {
1376 *buffer++ = 'a' + drive;
1377 *buffer++ = ':';
1378 *buffer++ = '\\';
1379 *buffer++ = 0;
1380 }
1381 }
1382 *buffer = 0;
1383 return count * 4;
1384 }
1385
1386
1387 /***********************************************************************
1388 * GetLogicalDriveStringsW (KERNEL32.@)
1389 */
1390 UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
1391 {
1392 DWORD drives = GetLogicalDrives();
1393 UINT drive, count;
1394
1395 for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
1396 if ((count * 4) + 1 > len) return count * 4 + 1;
1397
1398 for (drive = 0; drive < 26; drive++)
1399 {
1400 if (drives & (1 << drive))
1401 {
1402 *buffer++ = 'a' + drive;
1403 *buffer++ = ':';
1404 *buffer++ = '\\';
1405 *buffer++ = 0;
1406 }
1407 }
1408 *buffer = 0;
1409 return count * 4;
1410 }
1411
1412
1413 /***********************************************************************
1414 * GetDriveTypeW (KERNEL32.@)
1415 *
1416 * Returns the type of the disk drive specified. If root is NULL the
1417 * root of the current directory is used.
1418 *
1419 * RETURNS
1420 *
1421 * Type of drive (from Win32 SDK):
1422 *
1423 * DRIVE_UNKNOWN unable to find out anything about the drive
1424 * DRIVE_NO_ROOT_DIR nonexistent root dir
1425 * DRIVE_REMOVABLE the disk can be removed from the machine
1426 * DRIVE_FIXED the disk can not be removed from the machine
1427 * DRIVE_REMOTE network disk
1428 * DRIVE_CDROM CDROM drive
1429 * DRIVE_RAMDISK virtual disk in RAM
1430 */
1431 UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
1432 {
1433 FILE_FS_DEVICE_INFORMATION info;
1434 IO_STATUS_BLOCK io;
1435 NTSTATUS status;
1436 HANDLE handle;
1437 UINT ret;
1438
1439 if (!open_device_root( root, &handle )) return DRIVE_NO_ROOT_DIR;
1440
1441 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
1442 NtClose( handle );
1443 if (status != STATUS_SUCCESS)
1444 {
1445 SetLastError( RtlNtStatusToDosError(status) );
1446 ret = DRIVE_UNKNOWN;
1447 }
1448 else if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
1449 {
1450 switch (info.DeviceType)
1451 {
1452 case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
1453 case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
1454 case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
1455 case FILE_DEVICE_DISK_FILE_SYSTEM:
1456 if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
1457 else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
1458 else ret = DRIVE_FIXED;
1459 break;
1460 default:
1461 ret = DRIVE_UNKNOWN;
1462 break;
1463 }
1464 }
1465 TRACE( "%s -> %d\n", debugstr_w(root), ret );
1466 return ret;
1467 }
1468
1469
1470 /***********************************************************************
1471 * GetDriveTypeA (KERNEL32.@)
1472 */
1473 UINT WINAPI GetDriveTypeA( LPCSTR root )
1474 {
1475 WCHAR *rootW = NULL;
1476
1477 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
1478 return GetDriveTypeW( rootW );
1479 }
1480
1481
1482 /***********************************************************************
1483 * GetDiskFreeSpaceExW (KERNEL32.@)
1484 *
1485 * This function is used to acquire the size of the available and
1486 * total space on a logical volume.
1487 *
1488 * RETURNS
1489 *
1490 * Zero on failure, nonzero upon success. Use GetLastError to obtain
1491 * detailed error information.
1492 *
1493 */
1494 BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
1495 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1496 {
1497 FILE_FS_SIZE_INFORMATION info;
1498 IO_STATUS_BLOCK io;
1499 NTSTATUS status;
1500 HANDLE handle;
1501 UINT units;
1502
1503 TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
1504
1505 if (!open_device_root( root, &handle )) return FALSE;
1506
1507 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1508 NtClose( handle );
1509 if (status != STATUS_SUCCESS)
1510 {
1511 SetLastError( RtlNtStatusToDosError(status) );
1512 return FALSE;
1513 }
1514
1515 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1516 if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
1517 if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1518 /* FIXME: this one should take quotas into account */
1519 if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
1520 return TRUE;
1521 }
1522
1523
1524 /***********************************************************************
1525 * GetDiskFreeSpaceExA (KERNEL32.@)
1526 */
1527 BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
1528 PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
1529 {
1530 WCHAR *rootW = NULL;
1531
1532 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1533 return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
1534 }
1535
1536
1537 /***********************************************************************
1538 * GetDiskFreeSpaceW (KERNEL32.@)
1539 */
1540 BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
1541 LPDWORD sector_bytes, LPDWORD free_clusters,
1542 LPDWORD total_clusters )
1543 {
1544 FILE_FS_SIZE_INFORMATION info;
1545 IO_STATUS_BLOCK io;
1546 NTSTATUS status;
1547 HANDLE handle;
1548 UINT units;
1549
1550 TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
1551 cluster_sectors, sector_bytes, free_clusters, total_clusters );
1552
1553 if (!open_device_root( root, &handle )) return FALSE;
1554
1555 status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
1556 NtClose( handle );
1557 if (status != STATUS_SUCCESS)
1558 {
1559 SetLastError( RtlNtStatusToDosError(status) );
1560 return FALSE;
1561 }
1562
1563 units = info.SectorsPerAllocationUnit * info.BytesPerSector;
1564
1565 /* cap the size and available at 2GB as per specs */
1566 if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
1567 info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
1568 if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff)
1569 info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
1570
1571 if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
1572 if (sector_bytes) *sector_bytes = info.BytesPerSector;
1573 if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
1574 if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
1575 return TRUE;
1576 }
1577
1578
1579 /***********************************************************************
1580 * GetDiskFreeSpaceA (KERNEL32.@)
1581 */
1582 BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
1583 LPDWORD sector_bytes, LPDWORD free_clusters,
1584 LPDWORD total_clusters )
1585 {
1586 WCHAR *rootW = NULL;
1587
1588 if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
1589 return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
1590 }
Work in progress by Kai Blin