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winepulse v18: Latency and compilation improvements
[wine/multimedia.git] / dlls / ntdll / directory.c
blobc8fff6b3b6ca098613436bcd37a82c9ff87e7234
1 /*
2 * NTDLL directory functions
3 *
4 * Copyright 1993 Erik Bos
5 * Copyright 2003 Eric Pouech
6 * Copyright 1996, 2004 Alexandre Julliard
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 */
22
23 #include "config.h"
24 #include "wine/port.h"
25
26 #include <assert.h>
27 #include <sys/types.h>
28 #ifdef HAVE_DIRENT_H
29 # include <dirent.h>
30 #endif
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <stdarg.h>
34 #include <string.h>
35 #include <stdlib.h>
36 #include <stdio.h>
37 #include <limits.h>
38 #ifdef HAVE_MNTENT_H
39 #include <mntent.h>
40 #endif
41 #ifdef HAVE_SYS_STAT_H
42 # include <sys/stat.h>
43 #endif
44 #ifdef HAVE_SYS_SYSCALL_H
45 # include <sys/syscall.h>
46 #endif
47 #ifdef HAVE_SYS_ATTR_H
48 #include <sys/attr.h>
49 #endif
50 #ifdef HAVE_SYS_IOCTL_H
51 #include <sys/ioctl.h>
52 #endif
53 #ifdef HAVE_LINUX_IOCTL_H
54 #include <linux/ioctl.h>
55 #endif
56 #ifdef HAVE_LINUX_MAJOR_H
57 # include <linux/major.h>
58 #endif
59 #ifdef HAVE_SYS_PARAM_H
60 #include <sys/param.h>
61 #endif
62 #ifdef HAVE_SYS_MOUNT_H
63 #include <sys/mount.h>
64 #endif
65 #ifdef HAVE_SYS_STATFS_H
66 #include <sys/statfs.h>
67 #endif
68 #include <time.h>
69 #ifdef HAVE_UNISTD_H
70 # include <unistd.h>
71 #endif
72
73 #define NONAMELESSUNION
74 #define NONAMELESSSTRUCT
75 #include "ntstatus.h"
76 #define WIN32_NO_STATUS
77 #include "windef.h"
78 #include "winnt.h"
79 #include "winternl.h"
80 #include "ddk/wdm.h"
81 #include "ntdll_misc.h"
82 #include "wine/unicode.h"
83 #include "wine/server.h"
84 #include "wine/list.h"
85 #include "wine/library.h"
86 #include "wine/debug.h"
87
88 WINE_DEFAULT_DEBUG_CHANNEL(file);
89
90 /* just in case... */
91 #undef VFAT_IOCTL_READDIR_BOTH
92 #undef USE_GETDENTS
93
94 #ifdef linux
95
96 /* We want the real kernel dirent structure, not the libc one */
97 typedef struct
98 {
99 long d_ino;
100 long d_off;
101 unsigned short d_reclen;
102 char d_name[256];
103 } KERNEL_DIRENT;
104
105 /* Define the VFAT ioctl to get both short and long file names */
106 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
107
108 #ifndef O_DIRECTORY
109 # define O_DIRECTORY 0200000 /* must be directory */
110 #endif
111
112 #ifdef SYS_getdents64
113 typedef struct
114 {
115 ULONG64 d_ino;
116 LONG64 d_off;
117 unsigned short d_reclen;
118 unsigned char d_type;
119 char d_name[256];
120 } KERNEL_DIRENT64;
121
122 static inline int getdents64( int fd, char *de, unsigned int size )
123 {
124 return syscall( SYS_getdents64, fd, de, size );
125 }
126 #define USE_GETDENTS
127 #endif
128
129 #endif /* linux */
130
131 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
132 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
133
134 #define INVALID_NT_CHARS '*','?','<','>','|','"'
135 #define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
136
137 #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
138
139 #define MAX_IGNORED_FILES 4
140
141 struct file_identity
142 {
143 dev_t dev;
144 ino_t ino;
145 };
146
147 static struct file_identity ignored_files[MAX_IGNORED_FILES];
148 static int ignored_files_count;
149
150 union file_directory_info
151 {
152 ULONG next;
153 FILE_DIRECTORY_INFORMATION dir;
154 FILE_BOTH_DIRECTORY_INFORMATION both;
155 FILE_FULL_DIRECTORY_INFORMATION full;
156 FILE_ID_BOTH_DIRECTORY_INFORMATION id_both;
157 FILE_ID_FULL_DIRECTORY_INFORMATION id_full;
158 };
159
160 static int show_dot_files = -1;
161
162 /* at some point we may want to allow Winelib apps to set this */
163 static const int is_case_sensitive = FALSE;
164
165 UNICODE_STRING system_dir = { 0, 0, NULL }; /* system directory */
166
167 static struct file_identity curdir;
168 static struct file_identity windir;
169
170 static RTL_CRITICAL_SECTION dir_section;
171 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
172 {
173 0, 0, &dir_section,
174 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
175 0, 0, { (DWORD_PTR)(__FILE__ ": dir_section") }
176 };
177 static RTL_CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
178
179
180 /* check if a given Unicode char is OK in a DOS short name */
181 static inline BOOL is_invalid_dos_char( WCHAR ch )
182 {
183 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
184 if (ch > 0x7f) return TRUE;
185 return strchrW( invalid_chars, ch ) != NULL;
186 }
187
188 /* check if the device can be a mounted volume */
189 static inline int is_valid_mounted_device( const struct stat *st )
190 {
191 #if defined(linux) || defined(__sun__)
192 return S_ISBLK( st->st_mode );
193 #else
194 /* disks are char devices on *BSD */
195 return S_ISCHR( st->st_mode );
196 #endif
197 }
198
199 static inline void ignore_file( const char *name )
200 {
201 struct stat st;
202 assert( ignored_files_count < MAX_IGNORED_FILES );
203 if (!stat( name, &st ))
204 {
205 ignored_files[ignored_files_count].dev = st.st_dev;
206 ignored_files[ignored_files_count].ino = st.st_ino;
207 ignored_files_count++;
208 }
209 }
210
211 static inline BOOL is_same_file( const struct file_identity *file, const struct stat *st )
212 {
213 return st->st_dev == file->dev && st->st_ino == file->ino;
214 }
215
216 static inline BOOL is_ignored_file( const struct stat *st )
217 {
218 unsigned int i;
219
220 for (i = 0; i < ignored_files_count; i++)
221 if (is_same_file( &ignored_files[i], st )) return TRUE;
222 return FALSE;
223 }
224
225 static inline unsigned int dir_info_size( FILE_INFORMATION_CLASS class, unsigned int len )
226 {
227 switch (class)
228 {
229 case FileDirectoryInformation:
230 return (FIELD_OFFSET( FILE_DIRECTORY_INFORMATION, FileName[len] ) + 3) & ~3;
231 case FileBothDirectoryInformation:
232 return (FIELD_OFFSET( FILE_BOTH_DIRECTORY_INFORMATION, FileName[len] ) + 3) & ~3;
233 case FileFullDirectoryInformation:
234 return (FIELD_OFFSET( FILE_FULL_DIRECTORY_INFORMATION, FileName[len] ) + 3) & ~3;
235 case FileIdBothDirectoryInformation:
236 return (FIELD_OFFSET( FILE_ID_BOTH_DIRECTORY_INFORMATION, FileName[len] ) + 3) & ~3;
237 case FileIdFullDirectoryInformation:
238 return (FIELD_OFFSET( FILE_ID_FULL_DIRECTORY_INFORMATION, FileName[len] ) + 3) & ~3;
239 default:
240 assert(0);
241 return 0;
242 }
243 }
244
245 static inline unsigned int max_dir_info_size( FILE_INFORMATION_CLASS class )
246 {
247 return dir_info_size( class, MAX_DIR_ENTRY_LEN );
248 }
249
250
251 /* support for a directory queue for filesystem searches */
252
253 struct dir_name
254 {
255 struct list entry;
256 char name[1];
257 };
258
259 static struct list dir_queue = LIST_INIT( dir_queue );
260
261 static NTSTATUS add_dir_to_queue( const char *name )
262 {
263 int len = strlen( name ) + 1;
264 struct dir_name *dir = RtlAllocateHeap( GetProcessHeap(), 0,
265 FIELD_OFFSET( struct dir_name, name[len] ));
266 if (!dir) return STATUS_NO_MEMORY;
267 strcpy( dir->name, name );
268 list_add_tail( &dir_queue, &dir->entry );
269 return STATUS_SUCCESS;
270 }
271
272 static NTSTATUS next_dir_in_queue( char *name )
273 {
274 struct list *head = list_head( &dir_queue );
275 if (head)
276 {
277 struct dir_name *dir = LIST_ENTRY( head, struct dir_name, entry );
278 strcpy( name, dir->name );
279 list_remove( &dir->entry );
280 RtlFreeHeap( GetProcessHeap(), 0, dir );
281 return STATUS_SUCCESS;
282 }
283 return STATUS_OBJECT_NAME_NOT_FOUND;
284 }
285
286 static void flush_dir_queue(void)
287 {
288 struct list *head;
289
290 while ((head = list_head( &dir_queue )))
291 {
292 struct dir_name *dir = LIST_ENTRY( head, struct dir_name, entry );
293 list_remove( &dir->entry );
294 RtlFreeHeap( GetProcessHeap(), 0, dir );
295 }
296 }
297
298
299 /***********************************************************************
300 * get_default_com_device
301 *
302 * Return the default device to use for serial ports.
303 */
304 static char *get_default_com_device( int num )
305 {
306 char *ret = NULL;
307
308 if (!num || num > 9) return ret;
309 #ifdef linux
310 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
311 if (ret)
312 {
313 strcpy( ret, "/dev/ttyS0" );
314 ret[strlen(ret) - 1] = '0' + num - 1;
315 }
316 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
317 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/cuau0") );
318 if (ret)
319 {
320 strcpy( ret, "/dev/cuau0" );
321 ret[strlen(ret) - 1] = '0' + num - 1;
322 }
323 #elif defined(__DragonFly__)
324 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/cuaa0") );
325 if (ret)
326 {
327 strcpy( ret, "/dev/cuaa0" );
328 ret[strlen(ret) - 1] = '0' + num - 1;
329 }
330 #else
331 FIXME( "no known default for device com%d\n", num );
332 #endif
333 return ret;
334 }
335
336
337 /***********************************************************************
338 * get_default_lpt_device
339 *
340 * Return the default device to use for parallel ports.
341 */
342 static char *get_default_lpt_device( int num )
343 {
344 char *ret = NULL;
345
346 if (!num || num > 9) return ret;
347 #ifdef linux
348 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
349 if (ret)
350 {
351 strcpy( ret, "/dev/lp0" );
352 ret[strlen(ret) - 1] = '0' + num - 1;
353 }
354 #else
355 FIXME( "no known default for device lpt%d\n", num );
356 #endif
357 return ret;
358 }
359
360
361 /***********************************************************************
362 * DIR_get_drives_info
363 *
364 * Retrieve device/inode number for all the drives. Helper for find_drive_root.
365 */
366 unsigned int DIR_get_drives_info( struct drive_info info[MAX_DOS_DRIVES] )
367 {
368 static struct drive_info cache[MAX_DOS_DRIVES];
369 static time_t last_update;
370 static unsigned int nb_drives;
371 unsigned int ret;
372 time_t now = time(NULL);
373
374 RtlEnterCriticalSection( &dir_section );
375 if (now != last_update)
376 {
377 const char *config_dir = wine_get_config_dir();
378 char *buffer, *p;
379 struct stat st;
380 unsigned int i;
381
382 if ((buffer = RtlAllocateHeap( GetProcessHeap(), 0,
383 strlen(config_dir) + sizeof("/dosdevices/a:") )))
384 {
385 strcpy( buffer, config_dir );
386 strcat( buffer, "/dosdevices/a:" );
387 p = buffer + strlen(buffer) - 2;
388
389 for (i = nb_drives = 0; i < MAX_DOS_DRIVES; i++)
390 {
391 *p = 'a' + i;
392 if (!stat( buffer, &st ))
393 {
394 cache[i].dev = st.st_dev;
395 cache[i].ino = st.st_ino;
396 nb_drives++;
397 }
398 else
399 {
400 cache[i].dev = 0;
401 cache[i].ino = 0;
402 }
403 }
404 RtlFreeHeap( GetProcessHeap(), 0, buffer );
405 }
406 last_update = now;
407 }
408 memcpy( info, cache, sizeof(cache) );
409 ret = nb_drives;
410 RtlLeaveCriticalSection( &dir_section );
411 return ret;
412 }
413
414
415 /***********************************************************************
416 * parse_mount_entries
417 *
418 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
419 */
420
421 #ifdef sun
422 #include <sys/vfstab.h>
423 static char *parse_vfstab_entries( FILE *f, dev_t dev, ino_t ino)
424 {
425 struct vfstab entry;
426 struct stat st;
427 char *device;
428
429 while (! getvfsent( f, &entry ))
430 {
431 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
432 if (!strcmp( entry.vfs_fstype, "nfs" ) ||
433 !strcmp( entry.vfs_fstype, "smbfs" ) ||
434 !strcmp( entry.vfs_fstype, "ncpfs" )) continue;
435
436 if (stat( entry.vfs_mountp, &st ) == -1) continue;
437 if (st.st_dev != dev || st.st_ino != ino) continue;
438 if (!strcmp( entry.vfs_fstype, "fd" ))
439 {
440 if ((device = strstr( entry.vfs_mntopts, "dev=" )))
441 {
442 char *p = strchr( device + 4, ',' );
443 if (p) *p = 0;
444 return device + 4;
445 }
446 }
447 else
448 return entry.vfs_special;
449 }
450 return NULL;
451 }
452 #endif
453
454 #ifdef linux
455 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
456 {
457 struct mntent *entry;
458 struct stat st;
459 char *device;
460
461 while ((entry = getmntent( f )))
462 {
463 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
464 if (!strcmp( entry->mnt_type, "nfs" ) ||
465 !strcmp( entry->mnt_type, "smbfs" ) ||
466 !strcmp( entry->mnt_type, "ncpfs" )) continue;
467
468 if (stat( entry->mnt_dir, &st ) == -1) continue;
469 if (st.st_dev != dev || st.st_ino != ino) continue;
470 if (!strcmp( entry->mnt_type, "supermount" ))
471 {
472 if ((device = strstr( entry->mnt_opts, "dev=" )))
473 {
474 char *p = strchr( device + 4, ',' );
475 if (p) *p = 0;
476 return device + 4;
477 }
478 }
479 else if (!stat( entry->mnt_fsname, &st ) && S_ISREG(st.st_mode))
480 {
481 /* if device is a regular file check for a loop mount */
482 if ((device = strstr( entry->mnt_opts, "loop=" )))
483 {
484 char *p = strchr( device + 5, ',' );
485 if (p) *p = 0;
486 return device + 5;
487 }
488 }
489 else
490 return entry->mnt_fsname;
491 }
492 return NULL;
493 }
494 #endif
495
496 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
497 #include <fstab.h>
498 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
499 {
500 struct fstab *entry;
501 struct stat st;
502
503 while ((entry = getfsent()))
504 {
505 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
506 if (!strcmp( entry->fs_vfstype, "nfs" ) ||
507 !strcmp( entry->fs_vfstype, "smbfs" ) ||
508 !strcmp( entry->fs_vfstype, "ncpfs" )) continue;
509
510 if (stat( entry->fs_file, &st ) == -1) continue;
511 if (st.st_dev != dev || st.st_ino != ino) continue;
512 return entry->fs_spec;
513 }
514 return NULL;
515 }
516 #endif
517
518 #ifdef sun
519 #include <sys/mnttab.h>
520 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
521 {
522 struct mnttab entry;
523 struct stat st;
524 char *device;
525
526
527 while (( ! getmntent( f, &entry) ))
528 {
529 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
530 if (!strcmp( entry.mnt_fstype, "nfs" ) ||
531 !strcmp( entry.mnt_fstype, "smbfs" ) ||
532 !strcmp( entry.mnt_fstype, "ncpfs" )) continue;
533
534 if (stat( entry.mnt_mountp, &st ) == -1) continue;
535 if (st.st_dev != dev || st.st_ino != ino) continue;
536 if (!strcmp( entry.mnt_fstype, "fd" ))
537 {
538 if ((device = strstr( entry.mnt_mntopts, "dev=" )))
539 {
540 char *p = strchr( device + 4, ',' );
541 if (p) *p = 0;
542 return device + 4;
543 }
544 }
545 else
546 return entry.mnt_special;
547 }
548 return NULL;
549 }
550 #endif
551
552 /***********************************************************************
553 * get_default_drive_device
554 *
555 * Return the default device to use for a given drive mount point.
556 */
557 static char *get_default_drive_device( const char *root )
558 {
559 char *ret = NULL;
560
561 #ifdef linux
562 FILE *f;
563 char *device = NULL;
564 int fd, res = -1;
565 struct stat st;
566
567 /* try to open it first to force it to get mounted */
568 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
569 {
570 res = fstat( fd, &st );
571 close( fd );
572 }
573 /* now try normal stat just in case */
574 if (res == -1) res = stat( root, &st );
575 if (res == -1) return NULL;
576
577 RtlEnterCriticalSection( &dir_section );
578
579 if ((f = fopen( "/etc/mtab", "r" )))
580 {
581 device = parse_mount_entries( f, st.st_dev, st.st_ino );
582 endmntent( f );
583 }
584 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
585 if (!device && (f = fopen( "/etc/fstab", "r" )))
586 {
587 device = parse_mount_entries( f, st.st_dev, st.st_ino );
588 endmntent( f );
589 }
590 if (device)
591 {
592 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
593 if (ret) strcpy( ret, device );
594 }
595 RtlLeaveCriticalSection( &dir_section );
596
597 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__ ) || defined(__DragonFly__)
598 char *device = NULL;
599 int fd, res = -1;
600 struct stat st;
601
602 /* try to open it first to force it to get mounted */
603 if ((fd = open( root, O_RDONLY )) != -1)
604 {
605 res = fstat( fd, &st );
606 close( fd );
607 }
608 /* now try normal stat just in case */
609 if (res == -1) res = stat( root, &st );
610 if (res == -1) return NULL;
611
612 RtlEnterCriticalSection( &dir_section );
613
614 /* The FreeBSD parse_mount_entries doesn't require a file argument, so just
615 * pass NULL. Leave the argument in for symmetry.
616 */
617 device = parse_mount_entries( NULL, st.st_dev, st.st_ino );
618 if (device)
619 {
620 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
621 if (ret) strcpy( ret, device );
622 }
623 RtlLeaveCriticalSection( &dir_section );
624
625 #elif defined( sun )
626 FILE *f;
627 char *device = NULL;
628 int fd, res = -1;
629 struct stat st;
630
631 /* try to open it first to force it to get mounted */
632 if ((fd = open( root, O_RDONLY )) != -1)
633 {
634 res = fstat( fd, &st );
635 close( fd );
636 }
637 /* now try normal stat just in case */
638 if (res == -1) res = stat( root, &st );
639 if (res == -1) return NULL;
640
641 RtlEnterCriticalSection( &dir_section );
642
643 if ((f = fopen( "/etc/mnttab", "r" )))
644 {
645 device = parse_mount_entries( f, st.st_dev, st.st_ino);
646 fclose( f );
647 }
648 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
649 if (!device && (f = fopen( "/etc/vfstab", "r" )))
650 {
651 device = parse_vfstab_entries( f, st.st_dev, st.st_ino );
652 fclose( f );
653 }
654 if (device)
655 {
656 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
657 if (ret) strcpy( ret, device );
658 }
659 RtlLeaveCriticalSection( &dir_section );
660
661 #elif defined(__APPLE__)
662 struct statfs *mntStat;
663 struct stat st;
664 int i;
665 int mntSize;
666 dev_t dev;
667 ino_t ino;
668 static const char path_bsd_device[] = "/dev/disk";
669 int res;
670
671 res = stat( root, &st );
672 if (res == -1) return NULL;
673
674 dev = st.st_dev;
675 ino = st.st_ino;
676
677 RtlEnterCriticalSection( &dir_section );
678
679 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
680
681 for (i = 0; i < mntSize && !ret; i++)
682 {
683 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
684 if (st.st_dev != dev || st.st_ino != ino) continue;
685
686 /* FIXME add support for mounted network drive */
687 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
688 {
689 /* set return value to the corresponding raw BSD node */
690 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
691 if (ret)
692 {
693 strcpy(ret, "/dev/r");
694 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
695 }
696 }
697 }
698 RtlLeaveCriticalSection( &dir_section );
699 #else
700 static int warned;
701 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
702 #endif
703 return ret;
704 }
705
706
707 /***********************************************************************
708 * get_device_mount_point
709 *
710 * Return the current mount point for a device.
711 */
712 static char *get_device_mount_point( dev_t dev )
713 {
714 char *ret = NULL;
715
716 #ifdef linux
717 FILE *f;
718
719 RtlEnterCriticalSection( &dir_section );
720
721 if ((f = fopen( "/etc/mtab", "r" )))
722 {
723 struct mntent *entry;
724 struct stat st;
725 char *p, *device;
726
727 while ((entry = getmntent( f )))
728 {
729 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
730 if (!strcmp( entry->mnt_type, "nfs" ) ||
731 !strcmp( entry->mnt_type, "smbfs" ) ||
732 !strcmp( entry->mnt_type, "ncpfs" )) continue;
733
734 if (!strcmp( entry->mnt_type, "supermount" ))
735 {
736 if ((device = strstr( entry->mnt_opts, "dev=" )))
737 {
738 device += 4;
739 if ((p = strchr( device, ',' ))) *p = 0;
740 }
741 }
742 else if (!stat( entry->mnt_fsname, &st ) && S_ISREG(st.st_mode))
743 {
744 /* if device is a regular file check for a loop mount */
745 if ((device = strstr( entry->mnt_opts, "loop=" )))
746 {
747 device += 5;
748 if ((p = strchr( device, ',' ))) *p = 0;
749 }
750 }
751 else device = entry->mnt_fsname;
752
753 if (device && !stat( device, &st ) && S_ISBLK(st.st_mode) && st.st_rdev == dev)
754 {
755 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry->mnt_dir) + 1 );
756 if (ret) strcpy( ret, entry->mnt_dir );
757 break;
758 }
759 }
760 endmntent( f );
761 }
762 RtlLeaveCriticalSection( &dir_section );
763 #elif defined(__APPLE__)
764 struct statfs *entry;
765 struct stat st;
766 int i, size;
767
768 RtlEnterCriticalSection( &dir_section );
769
770 size = getmntinfo( &entry, MNT_NOWAIT );
771 for (i = 0; i < size; i++)
772 {
773 if (stat( entry[i].f_mntfromname, &st ) == -1) continue;
774 if (S_ISBLK(st.st_mode) && st.st_rdev == dev)
775 {
776 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry[i].f_mntfromname) + 1 );
777 if (ret) strcpy( ret, entry[i].f_mntfromname );
778 break;
779 }
780 }
781 RtlLeaveCriticalSection( &dir_section );
782 #else
783 static int warned;
784 if (!warned++) FIXME( "unmounting devices not supported on this platform\n" );
785 #endif
786 return ret;
787 }
788
789
790 #if defined(HAVE_GETATTRLIST) && defined(ATTR_VOL_CAPABILITIES) && \
791 defined(VOL_CAPABILITIES_FORMAT) && defined(VOL_CAP_FMT_CASE_SENSITIVE)
792
793 struct get_fsid
794 {
795 ULONG size;
796 dev_t dev;
797 fsid_t fsid;
798 };
799
800 struct fs_cache
801 {
802 dev_t dev;
803 fsid_t fsid;
804 BOOLEAN case_sensitive;
805 } fs_cache[64];
806
807 struct vol_caps
808 {
809 ULONG size;
810 vol_capabilities_attr_t caps;
811 };
812
813 /***********************************************************************
814 * look_up_fs_cache
815 *
816 * Checks if the specified file system is in the cache.
817 */
818 static struct fs_cache *look_up_fs_cache( dev_t dev )
819 {
820 int i;
821 for (i = 0; i < sizeof(fs_cache)/sizeof(fs_cache[0]); i++)
822 if (fs_cache[i].dev == dev)
823 return fs_cache+i;
824 return NULL;
825 }
826
827 /***********************************************************************
828 * add_fs_cache
829 *
830 * Adds the specified file system to the cache.
831 */
832 static void add_fs_cache( dev_t dev, fsid_t fsid, BOOLEAN case_sensitive )
833 {
834 int i;
835 struct fs_cache *entry = look_up_fs_cache( dev );
836 static int once = 0;
837 if (entry)
838 {
839 /* Update the cache */
840 entry->fsid = fsid;
841 entry->case_sensitive = case_sensitive;
842 return;
843 }
844
845 /* Add a new entry */
846 for (i = 0; i < sizeof(fs_cache)/sizeof(fs_cache[0]); i++)
847 if (fs_cache[i].dev == 0)
848 {
849 /* This entry is empty, use it */
850 fs_cache[i].dev = dev;
851 fs_cache[i].fsid = fsid;
852 fs_cache[i].case_sensitive = case_sensitive;
853 return;
854 }
855
856 /* Cache is out of space, warn */
857 if (!once++)
858 WARN( "FS cache is out of space, expect performance problems\n" );
859 }
860
861 /***********************************************************************
862 * get_dir_case_sensitivity_attr
863 *
864 * Checks if the volume containing the specified directory is case
865 * sensitive or not. Uses getattrlist(2).
866 */
867 static int get_dir_case_sensitivity_attr( const char *dir )
868 {
869 char *mntpoint = NULL;
870 struct attrlist attr;
871 struct vol_caps caps;
872 struct get_fsid get_fsid;
873 struct fs_cache *entry;
874
875 /* First get the FS ID of the volume */
876 attr.bitmapcount = ATTR_BIT_MAP_COUNT;
877 attr.reserved = 0;
878 attr.commonattr = ATTR_CMN_DEVID|ATTR_CMN_FSID;
879 attr.volattr = attr.dirattr = attr.fileattr = attr.forkattr = 0;
880 get_fsid.size = 0;
881 if (getattrlist( dir, &attr, &get_fsid, sizeof(get_fsid), 0 ) != 0 ||
882 get_fsid.size != sizeof(get_fsid))
883 return -1;
884 /* Try to look it up in the cache */
885 entry = look_up_fs_cache( get_fsid.dev );
886 if (entry && !memcmp( &entry->fsid, &get_fsid.fsid, sizeof(fsid_t) ))
887 /* Cache lookup succeeded */
888 return entry->case_sensitive;
889 /* Cache is stale at this point, we have to update it */
890
891 mntpoint = get_device_mount_point( get_fsid.dev );
892 /* Now look up the case-sensitivity */
893 attr.commonattr = 0;
894 attr.volattr = ATTR_VOL_INFO|ATTR_VOL_CAPABILITIES;
895 if (getattrlist( mntpoint, &attr, &caps, sizeof(caps), 0 ) < 0)
896 {
897 RtlFreeHeap( GetProcessHeap(), 0, mntpoint );
898 add_fs_cache( get_fsid.dev, get_fsid.fsid, TRUE );
899 return TRUE;
900 }
901 RtlFreeHeap( GetProcessHeap(), 0, mntpoint );
902 if (caps.size == sizeof(caps) &&
903 (caps.caps.valid[VOL_CAPABILITIES_FORMAT] &
904 (VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING)) ==
905 (VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING))
906 {
907 BOOLEAN ret;
908
909 if ((caps.caps.capabilities[VOL_CAPABILITIES_FORMAT] &
910 VOL_CAP_FMT_CASE_SENSITIVE) != VOL_CAP_FMT_CASE_SENSITIVE)
911 ret = FALSE;
912 else
913 ret = TRUE;
914 /* Update the cache */
915 add_fs_cache( get_fsid.dev, get_fsid.fsid, ret );
916 return ret;
917 }
918 return FALSE;
919 }
920 #endif
921
922 /***********************************************************************
923 * get_dir_case_sensitivity_stat
924 *
925 * Checks if the volume containing the specified directory is case
926 * sensitive or not. Uses statfs(2) or statvfs(2).
927 */
928 static BOOLEAN get_dir_case_sensitivity_stat( const char *dir )
929 {
930 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
931 struct statfs stfs;
932
933 if (statfs( dir, &stfs ) == -1) return FALSE;
934 /* Assume these file systems are always case insensitive on Mac OS.
935 * For FreeBSD, only assume CIOPFS is case insensitive (AFAIK, Mac OS
936 * is the only UNIX that supports case-insensitive lookup).
937 */
938 if (!strcmp( stfs.f_fstypename, "fusefs" ) &&
939 !strncmp( stfs.f_mntfromname, "ciopfs", 5 ))
940 return FALSE;
941 #ifdef __APPLE__
942 if (!strcmp( stfs.f_fstypename, "msdos" ) ||
943 !strcmp( stfs.f_fstypename, "cd9660" ) ||
944 !strcmp( stfs.f_fstypename, "udf" ) ||
945 !strcmp( stfs.f_fstypename, "ntfs" ) ||
946 !strcmp( stfs.f_fstypename, "smbfs" ))
947 return FALSE;
948 #ifdef _DARWIN_FEATURE_64_BIT_INODE
949 if (!strcmp( stfs.f_fstypename, "hfs" ) && (stfs.f_fssubtype == 0 ||
950 stfs.f_fssubtype == 1 ||
951 stfs.f_fssubtype == 128))
952 return FALSE;
953 #else
954 /* The field says "reserved", but a quick look at the kernel source
955 * tells us that this "reserved" field is really the same as the
956 * "fssubtype" field from the inode64 structure (see munge_statfs()
957 * in <xnu-source>/bsd/vfs/vfs_syscalls.c).
958 */
959 if (!strcmp( stfs.f_fstypename, "hfs" ) && (stfs.f_reserved1 == 0 ||
960 stfs.f_reserved1 == 1 ||
961 stfs.f_reserved1 == 128))
962 return FALSE;
963 #endif
964 #endif
965 return TRUE;
966
967 #elif defined(__NetBSD__)
968 struct statvfs stfs;
969
970 if (statvfs( dir, &stfs ) == -1) return FALSE;
971 /* Only assume CIOPFS is case insensitive. */
972 if (strcmp( stfs.f_fstypename, "fusefs" ) ||
973 strncmp( stfs.f_mntfromname, "ciopfs", 5 ))
974 return TRUE;
975 return FALSE;
976
977 #elif defined(__linux__)
978 struct statfs stfs;
979 struct stat st;
980 char *cifile;
981
982 /* Only assume CIOPFS is case insensitive. */
983 if (statfs( dir, &stfs ) == -1) return FALSE;
984 if (stfs.f_type != 0x65735546 /* FUSE_SUPER_MAGIC */)
985 return TRUE;
986 /* Normally, we'd have to parse the mtab to find out exactly what
987 * kind of FUSE FS this is. But, someone on wine-devel suggested
988 * a shortcut. We'll stat a special file in the directory. If it's
989 * there, we'll assume it's a CIOPFS, else not.
990 * This will break if somebody puts a file named ".ciopfs" in a non-
991 * CIOPFS directory.
992 */
993 cifile = RtlAllocateHeap( GetProcessHeap(), 0, strlen( dir )+sizeof("/.ciopfs") );
994 if (!cifile) return TRUE;
995 strcpy( cifile, dir );
996 strcat( cifile, "/.ciopfs" );
997 if (stat( cifile, &st ) == 0)
998 {
999 RtlFreeHeap( GetProcessHeap(), 0, cifile );
1000 return FALSE;
1001 }
1002 RtlFreeHeap( GetProcessHeap(), 0, cifile );
1003 return TRUE;
1004 #else
1005 return TRUE;
1006 #endif
1007 }
1008
1009
1010 /***********************************************************************
1011 * get_dir_case_sensitivity
1012 *
1013 * Checks if the volume containing the specified directory is case
1014 * sensitive or not. Uses statfs(2) or statvfs(2).
1015 */
1016 static BOOLEAN get_dir_case_sensitivity( const char *dir )
1017 {
1018 #if defined(HAVE_GETATTRLIST) && defined(ATTR_VOL_CAPABILITIES) && \
1019 defined(VOL_CAPABILITIES_FORMAT) && defined(VOL_CAP_FMT_CASE_SENSITIVE)
1020 int case_sensitive = get_dir_case_sensitivity_attr( dir );
1021 if (case_sensitive != -1) return case_sensitive;
1022 #endif
1023 return get_dir_case_sensitivity_stat( dir );
1024 }
1025
1026
1027 /***********************************************************************
1028 * init_options
1029 *
1030 * Initialize the show_dot_files options.
1031 */
1032 static void init_options(void)
1033 {
1034 static const WCHAR WineW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e',0};
1035 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
1036 char tmp[80];
1037 HANDLE root, hkey;
1038 DWORD dummy;
1039 OBJECT_ATTRIBUTES attr;
1040 UNICODE_STRING nameW;
1041
1042 show_dot_files = 0;
1043
1044 RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
1045 attr.Length = sizeof(attr);
1046 attr.RootDirectory = root;
1047 attr.ObjectName = &nameW;
1048 attr.Attributes = 0;
1049 attr.SecurityDescriptor = NULL;
1050 attr.SecurityQualityOfService = NULL;
1051 RtlInitUnicodeString( &nameW, WineW );
1052
1053 /* @@ Wine registry key: HKCU\Software\Wine */
1054 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
1055 {
1056 RtlInitUnicodeString( &nameW, ShowDotFilesW );
1057 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
1058 {
1059 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
1060 show_dot_files = IS_OPTION_TRUE( str[0] );
1061 }
1062 NtClose( hkey );
1063 }
1064 NtClose( root );
1065
1066 /* a couple of directories that we don't want to return in directory searches */
1067 ignore_file( wine_get_config_dir() );
1068 ignore_file( "/dev" );
1069 ignore_file( "/proc" );
1070 #ifdef linux
1071 ignore_file( "/sys" );
1072 #endif
1073 }
1074
1075
1076 /***********************************************************************
1077 * DIR_is_hidden_file
1078 *
1079 * Check if the specified file should be hidden based on its name and the show dot files option.
1080 */
1081 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
1082 {
1083 WCHAR *p, *end;
1084
1085 if (show_dot_files == -1) init_options();
1086 if (show_dot_files) return FALSE;
1087
1088 end = p = name->Buffer + name->Length/sizeof(WCHAR);
1089 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
1090 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
1091 if (p == end || *p != '.') return FALSE;
1092 /* make sure it isn't '.' or '..' */
1093 if (p + 1 == end) return FALSE;
1094 if (p[1] == '.' && p + 2 == end) return FALSE;
1095 return TRUE;
1096 }
1097
1098
1099 /***********************************************************************
1100 * hash_short_file_name
1101 *
1102 * Transform a Unix file name into a hashed DOS name. If the name is a valid
1103 * DOS name, it is converted to upper-case; otherwise it is replaced by a
1104 * hashed version that fits in 8.3 format.
1105 * 'buffer' must be at least 12 characters long.
1106 * Returns length of short name in bytes; short name is NOT null-terminated.
1107 */
1108 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
1109 {
1110 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
1111
1112 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
1113 LPWSTR dst;
1114 unsigned short hash;
1115 int i;
1116
1117 /* Compute the hash code of the file name */
1118 /* If you know something about hash functions, feel free to */
1119 /* insert a better algorithm here... */
1120 if (!is_case_sensitive)
1121 {
1122 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
1123 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
1124 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
1125 }
1126 else
1127 {
1128 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
1129 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
1130 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
1131 }
1132
1133 /* Find last dot for start of the extension */
1134 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
1135
1136 /* Copy first 4 chars, replacing invalid chars with '_' */
1137 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
1138 {
1139 if (p == end || p == ext) break;
1140 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
1141 }
1142 /* Pad to 5 chars with '~' */
1143 while (i-- >= 0) *dst++ = '~';
1144
1145 /* Insert hash code converted to 3 ASCII chars */
1146 *dst++ = hash_chars[(hash >> 10) & 0x1f];
1147 *dst++ = hash_chars[(hash >> 5) & 0x1f];
1148 *dst++ = hash_chars[hash & 0x1f];
1149
1150 /* Copy the first 3 chars of the extension (if any) */
1151 if (ext)
1152 {
1153 *dst++ = '.';
1154 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
1155 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
1156 }
1157 return dst - buffer;
1158 }
1159
1160
1161 /***********************************************************************
1162 * match_filename
1163 *
1164 * Check a long file name against a mask.
1165 *
1166 * Tests (done in W95 DOS shell - case insensitive):
1167 * *.txt test1.test.txt *
1168 * *st1* test1.txt *
1169 * *.t??????.t* test1.ta.tornado.txt *
1170 * *tornado* test1.ta.tornado.txt *
1171 * t*t test1.ta.tornado.txt *
1172 * ?est* test1.txt *
1173 * ?est??? test1.txt -
1174 * *test1.txt* test1.txt *
1175 * h?l?o*t.dat hellothisisatest.dat *
1176 */
1177 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
1178 {
1179 int mismatch;
1180 const WCHAR *name = name_str->Buffer;
1181 const WCHAR *mask = mask_str->Buffer;
1182 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
1183 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
1184 const WCHAR *lastjoker = NULL;
1185 const WCHAR *next_to_retry = NULL;
1186
1187 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
1188
1189 while (name < name_end && mask < mask_end)
1190 {
1191 switch(*mask)
1192 {
1193 case '*':
1194 mask++;
1195 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
1196 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
1197 lastjoker = mask;
1198
1199 /* skip to the next match after the joker(s) */
1200 if (is_case_sensitive)
1201 while (name < name_end && (*name != *mask)) name++;
1202 else
1203 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
1204 next_to_retry = name;
1205 break;
1206 case '?':
1207 mask++;
1208 name++;
1209 break;
1210 default:
1211 if (is_case_sensitive) mismatch = (*mask != *name);
1212 else mismatch = (toupperW(*mask) != toupperW(*name));
1213
1214 if (!mismatch)
1215 {
1216 mask++;
1217 name++;
1218 if (mask == mask_end)
1219 {
1220 if (name == name_end) return TRUE;
1221 if (lastjoker) mask = lastjoker;
1222 }
1223 }
1224 else /* mismatch ! */
1225 {
1226 if (lastjoker) /* we had an '*', so we can try unlimitedly */
1227 {
1228 mask = lastjoker;
1229
1230 /* this scan sequence was a mismatch, so restart
1231 * 1 char after the first char we checked last time */
1232 next_to_retry++;
1233 name = next_to_retry;
1234 }
1235 else return FALSE; /* bad luck */
1236 }
1237 break;
1238 }
1239 }
1240 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
1241 mask++; /* Ignore trailing '.' or '*' in mask */
1242 return (name == name_end && mask == mask_end);
1243 }
1244
1245
1246 /***********************************************************************
1247 * append_entry
1248 *
1249 * helper for NtQueryDirectoryFile
1250 */
1251 static union file_directory_info *append_entry( void *info_ptr, IO_STATUS_BLOCK *io, ULONG max_length,
1252 const char *long_name, const char *short_name,
1253 const UNICODE_STRING *mask, FILE_INFORMATION_CLASS class )
1254 {
1255 union file_directory_info *info;
1256 int i, long_len, short_len, total_len;
1257 struct stat st;
1258 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
1259 WCHAR short_nameW[12];
1260 WCHAR *filename;
1261 UNICODE_STRING str;
1262 ULONG attributes = 0;
1263
1264 io->u.Status = STATUS_SUCCESS;
1265 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
1266 if (long_len == -1) return NULL;
1267
1268 str.Buffer = long_nameW;
1269 str.Length = long_len * sizeof(WCHAR);
1270 str.MaximumLength = sizeof(long_nameW);
1271
1272 if (short_name)
1273 {
1274 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
1275 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
1276 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
1277 }
1278 else /* generate a short name if necessary */
1279 {
1280 BOOLEAN spaces;
1281
1282 short_len = 0;
1283 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1284 short_len = hash_short_file_name( &str, short_nameW );
1285 }
1286
1287 TRACE( "long %s short %s mask %s\n",
1288 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
1289
1290 if (mask && !match_filename( &str, mask ))
1291 {
1292 if (!short_len) return NULL; /* no short name to match */
1293 str.Buffer = short_nameW;
1294 str.Length = short_len * sizeof(WCHAR);
1295 str.MaximumLength = sizeof(short_nameW);
1296 if (!match_filename( &str, mask )) return NULL;
1297 }
1298
1299 if (lstat( long_name, &st ) == -1) return NULL;
1300 if (S_ISLNK( st.st_mode ))
1301 {
1302 if (stat( long_name, &st ) == -1) return NULL;
1303 if (S_ISDIR( st.st_mode )) attributes |= FILE_ATTRIBUTE_REPARSE_POINT;
1304 }
1305 if (is_ignored_file( &st ))
1306 {
1307 TRACE( "ignoring file %s\n", long_name );
1308 return NULL;
1309 }
1310 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
1311 attributes |= FILE_ATTRIBUTE_HIDDEN;
1312
1313 total_len = dir_info_size( class, long_len );
1314 if (io->Information + total_len > max_length)
1315 {
1316 total_len = max_length - io->Information;
1317 io->u.Status = STATUS_BUFFER_OVERFLOW;
1318 }
1319 info = (union file_directory_info *)((char *)info_ptr + io->Information);
1320 if (st.st_dev != curdir.dev) st.st_ino = 0; /* ignore inode if on a different device */
1321 /* all the structures start with a FileDirectoryInformation layout */
1322 fill_stat_info( &st, info, class );
1323 info->dir.NextEntryOffset = total_len;
1324 info->dir.FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
1325 info->dir.FileAttributes |= attributes;
1326
1327 switch (class)
1328 {
1329 case FileDirectoryInformation:
1330 info->dir.FileNameLength = long_len * sizeof(WCHAR);
1331 filename = info->dir.FileName;
1332 break;
1333
1334 case FileFullDirectoryInformation:
1335 info->full.EaSize = 0; /* FIXME */
1336 info->full.FileNameLength = long_len * sizeof(WCHAR);
1337 filename = info->full.FileName;
1338 break;
1339
1340 case FileIdFullDirectoryInformation:
1341 info->id_full.EaSize = 0; /* FIXME */
1342 info->id_full.FileNameLength = long_len * sizeof(WCHAR);
1343 filename = info->id_full.FileName;
1344 break;
1345
1346 case FileBothDirectoryInformation:
1347 info->both.EaSize = 0; /* FIXME */
1348 info->both.ShortNameLength = short_len * sizeof(WCHAR);
1349 for (i = 0; i < short_len; i++) info->both.ShortName[i] = toupperW(short_nameW[i]);
1350 info->both.FileNameLength = long_len * sizeof(WCHAR);
1351 filename = info->both.FileName;
1352 break;
1353
1354 case FileIdBothDirectoryInformation:
1355 info->id_both.EaSize = 0; /* FIXME */
1356 info->id_both.ShortNameLength = short_len * sizeof(WCHAR);
1357 for (i = 0; i < short_len; i++) info->id_both.ShortName[i] = toupperW(short_nameW[i]);
1358 info->id_both.FileNameLength = long_len * sizeof(WCHAR);
1359 filename = info->id_both.FileName;
1360 break;
1361
1362 default:
1363 assert(0);
1364 return NULL;
1365 }
1366 memcpy( filename, long_nameW, total_len - ((char *)filename - (char *)info) );
1367 io->Information += total_len;
1368 return info;
1369 }
1370
1371
1372 #ifdef VFAT_IOCTL_READDIR_BOTH
1373
1374 /***********************************************************************
1375 * start_vfat_ioctl
1376 *
1377 * Wrapper for the VFAT ioctl to work around various kernel bugs.
1378 * dir_section must be held by caller.
1379 */
1380 static KERNEL_DIRENT *start_vfat_ioctl( int fd )
1381 {
1382 static KERNEL_DIRENT *de;
1383 int res;
1384
1385 if (!de)
1386 {
1387 const size_t page_size = getpagesize();
1388 SIZE_T size = 2 * sizeof(*de) + page_size;
1389 void *addr = NULL;
1390
1391 if (NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_RESERVE, PAGE_READWRITE ))
1392 return NULL;
1393 /* commit only the size needed for the dir entries */
1394 /* this leaves an extra unaccessible page, which should make the kernel */
1395 /* fail with -EFAULT before it stomps all over our memory */
1396 de = addr;
1397 size = 2 * sizeof(*de);
1398 NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_COMMIT, PAGE_READWRITE );
1399 }
1400
1401 /* set d_reclen to 65535 to work around an AFS kernel bug */
1402 de[0].d_reclen = 65535;
1403 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
1404 if (res == -1)
1405 {
1406 if (errno != ENOENT) return NULL; /* VFAT ioctl probably not supported */
1407 de[0].d_reclen = 0; /* eof */
1408 }
1409 else if (!res && de[0].d_reclen == 65535) return NULL; /* AFS bug */
1410
1411 return de;
1412 }
1413
1414
1415 /***********************************************************************
1416 * read_directory_vfat
1417 *
1418 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
1419 */
1420 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1421 BOOLEAN single_entry, const UNICODE_STRING *mask,
1422 BOOLEAN restart_scan, FILE_INFORMATION_CLASS class )
1423
1424 {
1425 size_t len;
1426 KERNEL_DIRENT *de;
1427 union file_directory_info *info, *last_info = NULL;
1428
1429 io->u.Status = STATUS_SUCCESS;
1430
1431 if (restart_scan) lseek( fd, 0, SEEK_SET );
1432
1433 if (length < max_dir_info_size(class)) /* we may have to return a partial entry here */
1434 {
1435 off_t old_pos = lseek( fd, 0, SEEK_CUR );
1436
1437 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
1438
1439 while (de[0].d_reclen)
1440 {
1441 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1442 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1443 de[0].d_name[len] = 0;
1444 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1445 de[1].d_name[len] = 0;
1446
1447 if (de[1].d_name[0])
1448 info = append_entry( buffer, io, length, de[1].d_name, de[0].d_name, mask, class );
1449 else
1450 info = append_entry( buffer, io, length, de[0].d_name, NULL, mask, class );
1451 if (info)
1452 {
1453 last_info = info;
1454 if (io->u.Status == STATUS_BUFFER_OVERFLOW)
1455 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1456 break;
1457 }
1458 old_pos = lseek( fd, 0, SEEK_CUR );
1459 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1460 }
1461 }
1462 else /* we'll only return full entries, no need to worry about overflow */
1463 {
1464 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
1465
1466 while (de[0].d_reclen)
1467 {
1468 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1469 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1470 de[0].d_name[len] = 0;
1471 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1472 de[1].d_name[len] = 0;
1473
1474 if (de[1].d_name[0])
1475 info = append_entry( buffer, io, length, de[1].d_name, de[0].d_name, mask, class );
1476 else
1477 info = append_entry( buffer, io, length, de[0].d_name, NULL, mask, class );
1478 if (info)
1479 {
1480 last_info = info;
1481 if (single_entry) break;
1482 /* check if we still have enough space for the largest possible entry */
1483 if (io->Information + max_dir_info_size(class) > length) break;
1484 }
1485 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1486 }
1487 }
1488
1489 if (last_info) last_info->next = 0;
1490 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1491 return 0;
1492 }
1493 #endif /* VFAT_IOCTL_READDIR_BOTH */
1494
1495
1496 #ifdef USE_GETDENTS
1497 /***********************************************************************
1498 * read_first_dent_name
1499 *
1500 * reads name of first or second dentry (if they have inodes).
1501 */
1502 static char *read_first_dent_name( int which, int fd, off_t second_offs, KERNEL_DIRENT64 *de_first_two,
1503 char *buffer, size_t size, BOOL *buffer_changed )
1504 {
1505 KERNEL_DIRENT64 *de;
1506 int res;
1507
1508 de = de_first_two;
1509 if (de != NULL)
1510 {
1511 if (which == 1)
1512 de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
1513
1514 return de->d_ino ? de->d_name : NULL;
1515 }
1516
1517 *buffer_changed = TRUE;
1518 lseek( fd, which == 1 ? second_offs : 0, SEEK_SET );
1519 res = getdents64( fd, buffer, size );
1520 if (res <= 0)
1521 return NULL;
1522
1523 de = (KERNEL_DIRENT64 *)buffer;
1524 return de->d_ino ? de->d_name : NULL;
1525 }
1526
1527 /***********************************************************************
1528 * read_directory_getdents
1529 *
1530 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
1531 */
1532 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1533 BOOLEAN single_entry, const UNICODE_STRING *mask,
1534 BOOLEAN restart_scan, FILE_INFORMATION_CLASS class )
1535 {
1536 static off_t second_entry_pos;
1537 static struct file_identity last_dir_id;
1538 off_t old_pos = 0, next_pos;
1539 size_t size = length;
1540 char *data, local_buffer[8192];
1541 KERNEL_DIRENT64 *de, *de_first_two = NULL;
1542 union file_directory_info *info, *last_info = NULL;
1543 const char *filename;
1544 BOOL data_buffer_changed;
1545 int res, swap_to;
1546
1547 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1548 {
1549 size = sizeof(local_buffer);
1550 data = local_buffer;
1551 }
1552
1553 if (restart_scan) lseek( fd, 0, SEEK_SET );
1554 else
1555 {
1556 old_pos = lseek( fd, 0, SEEK_CUR );
1557 if (old_pos == -1)
1558 {
1559 io->u.Status = (errno == ENOENT) ? STATUS_NO_MORE_FILES : FILE_GetNtStatus();
1560 res = 0;
1561 goto done;
1562 }
1563 }
1564
1565 io->u.Status = STATUS_SUCCESS;
1566 de = (KERNEL_DIRENT64 *)data;
1567
1568 /* if old_pos is not 0 we don't know how many entries have been returned already,
1569 * so maintain second_entry_pos to know when to return '..' */
1570 if (old_pos != 0 && (last_dir_id.dev != curdir.dev || last_dir_id.ino != curdir.ino))
1571 {
1572 lseek( fd, 0, SEEK_SET );
1573 res = getdents64( fd, data, size );
1574 if (res > 0)
1575 {
1576 second_entry_pos = de->d_off;
1577 last_dir_id = curdir;
1578 }
1579 lseek( fd, old_pos, SEEK_SET );
1580 }
1581
1582 res = getdents64( fd, data, size );
1583 if (res == -1)
1584 {
1585 if (errno != ENOSYS)
1586 {
1587 io->u.Status = FILE_GetNtStatus();
1588 res = 0;
1589 }
1590 goto done;
1591 }
1592
1593 if (old_pos == 0 && res > 0)
1594 {
1595 second_entry_pos = de->d_off;
1596 last_dir_id = curdir;
1597 if (res > de->d_reclen)
1598 de_first_two = de;
1599 }
1600
1601 while (res > 0)
1602 {
1603 res -= de->d_reclen;
1604 next_pos = de->d_off;
1605 filename = NULL;
1606
1607 /* we must return first 2 entries as "." and "..", but getdents64()
1608 * can return them anywhere, so swap first entries with "." and ".." */
1609 if (old_pos == 0)
1610 filename = ".";
1611 else if (old_pos == second_entry_pos)
1612 filename = "..";
1613 else if (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." ))
1614 {
1615 swap_to = !strcmp( de->d_name, "." ) ? 0 : 1;
1616 data_buffer_changed = FALSE;
1617
1618 filename = read_first_dent_name( swap_to, fd, second_entry_pos, de_first_two,
1619 data, size, &data_buffer_changed );
1620 if (filename != NULL && (!strcmp( filename, "." ) || !strcmp( filename, ".." )))
1621 filename = read_first_dent_name( swap_to ^ 1, fd, second_entry_pos, NULL,
1622 data, size, &data_buffer_changed );
1623 if (data_buffer_changed)
1624 {
1625 lseek( fd, next_pos, SEEK_SET );
1626 res = 0;
1627 }
1628 }
1629 else if (de->d_ino)
1630 filename = de->d_name;
1631
1632 if (filename && (info = append_entry( buffer, io, length, filename, NULL, mask, class )))
1633 {
1634 last_info = info;
1635 if (io->u.Status == STATUS_BUFFER_OVERFLOW)
1636 {
1637 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1638 break;
1639 }
1640 /* check if we still have enough space for the largest possible entry */
1641 if (single_entry || io->Information + max_dir_info_size(class) > length)
1642 {
1643 if (res > 0) lseek( fd, next_pos, SEEK_SET ); /* set pos to next entry */
1644 break;
1645 }
1646 }
1647 old_pos = next_pos;
1648 /* move on to the next entry */
1649 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
1650 else
1651 {
1652 res = getdents64( fd, data, size );
1653 de = (KERNEL_DIRENT64 *)data;
1654 de_first_two = NULL;
1655 }
1656 }
1657
1658 if (last_info) last_info->next = 0;
1659 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1660 res = 0;
1661 done:
1662 if (data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
1663 return res;
1664 }
1665
1666 #elif defined HAVE_GETDIRENTRIES
1667
1668 #ifdef _DARWIN_FEATURE_64_BIT_INODE
1669
1670 /* Darwin doesn't provide a version of getdirentries with support for 64-bit
1671 * inodes. When 64-bit inodes are enabled, the getdirentries symbol is mapped
1672 * to _getdirentries_is_not_available_when_64_bit_inodes_are_in_effect so that
1673 * we get link errors if we try to use it. We still need getdirentries, but we
1674 * don't need it to support 64-bit inodes. So, we use the legacy getdirentries
1675 * with 32-bit inodes. We have to be careful to use a corresponding dirent
1676 * structure, too.
1677 */
1678 int darwin_legacy_getdirentries(int, char *, int, long *) __asm("_getdirentries");
1679 #define getdirentries darwin_legacy_getdirentries
1680
1681 struct darwin_legacy_dirent {
1682 __uint32_t d_ino;
1683 __uint16_t d_reclen;
1684 __uint8_t d_type;
1685 __uint8_t d_namlen;
1686 char d_name[__DARWIN_MAXNAMLEN + 1];
1687 };
1688 #define dirent darwin_legacy_dirent
1689
1690 #endif
1691
1692 /***********************************************************************
1693 * wine_getdirentries
1694 *
1695 * Wrapper for the BSD getdirentries system call to fix a bug in the
1696 * Mac OS X version. For some file systems (at least Apple Filing
1697 * Protocol a.k.a. AFP), getdirentries resets the file position to 0
1698 * when it's about to return 0 (no more entries). So, a subsequent
1699 * getdirentries call starts over at the beginning again, causing an
1700 * infinite loop.
1701 */
1702 static inline int wine_getdirentries(int fd, char *buf, int nbytes, long *basep)
1703 {
1704 int res = getdirentries(fd, buf, nbytes, basep);
1705 #ifdef __APPLE__
1706 if (res == 0)
1707 lseek(fd, *basep, SEEK_SET);
1708 #endif
1709 return res;
1710 }
1711
1712 static inline int dir_reclen(struct dirent *de)
1713 {
1714 #ifdef HAVE_STRUCT_DIRENT_D_RECLEN
1715 return de->d_reclen;
1716 #else
1717 return _DIRENT_RECLEN(de->d_namlen);
1718 #endif
1719 }
1720
1721 /***********************************************************************
1722 * read_directory_getdirentries
1723 *
1724 * Read a directory using the BSD getdirentries system call; helper for NtQueryDirectoryFile.
1725 */
1726 static int read_directory_getdirentries( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1727 BOOLEAN single_entry, const UNICODE_STRING *mask,
1728 BOOLEAN restart_scan, FILE_INFORMATION_CLASS class )
1729 {
1730 long restart_pos;
1731 ULONG_PTR restart_info_pos = 0;
1732 size_t size, initial_size = length;
1733 int res, fake_dot_dot = 1;
1734 char *data, local_buffer[8192];
1735 struct dirent *de;
1736 union file_directory_info *info, *last_info = NULL, *restart_last_info = NULL;
1737
1738 size = initial_size;
1739 data = local_buffer;
1740 if (size > sizeof(local_buffer) && !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1741 {
1742 io->u.Status = STATUS_NO_MEMORY;
1743 return io->u.Status;
1744 }
1745
1746 if (restart_scan) lseek( fd, 0, SEEK_SET );
1747
1748 io->u.Status = STATUS_SUCCESS;
1749
1750 /* FIXME: should make sure size is larger than filesystem block size */
1751 res = wine_getdirentries( fd, data, size, &restart_pos );
1752 if (res == -1)
1753 {
1754 io->u.Status = FILE_GetNtStatus();
1755 res = 0;
1756 goto done;
1757 }
1758
1759 de = (struct dirent *)data;
1760
1761 if (restart_scan)
1762 {
1763 /* check if we got . and .. from getdirentries */
1764 if (res > 0)
1765 {
1766 if (!strcmp( de->d_name, "." ) && res > dir_reclen(de))
1767 {
1768 struct dirent *next_de = (struct dirent *)(data + dir_reclen(de));
1769 if (!strcmp( next_de->d_name, ".." )) fake_dot_dot = 0;
1770 }
1771 }
1772 /* make sure we have enough room for both entries */
1773 if (fake_dot_dot)
1774 {
1775 const ULONG min_info_size = dir_info_size( class, 1 ) + dir_info_size( class, 2 );
1776 if (length < min_info_size || single_entry)
1777 {
1778 FIXME( "not enough room %u/%u for fake . and .. entries\n", length, single_entry );
1779 fake_dot_dot = 0;
1780 }
1781 }
1782
1783 if (fake_dot_dot)
1784 {
1785 if ((info = append_entry( buffer, io, length, ".", NULL, mask, class )))
1786 last_info = info;
1787 if ((info = append_entry( buffer, io, length, "..", NULL, mask, class )))
1788 last_info = info;
1789
1790 restart_last_info = last_info;
1791 restart_info_pos = io->Information;
1792
1793 /* check if we still have enough space for the largest possible entry */
1794 if (last_info && io->Information + max_dir_info_size(class) > length)
1795 {
1796 lseek( fd, 0, SEEK_SET ); /* reset pos to first entry */
1797 res = 0;
1798 }
1799 }
1800 }
1801
1802 while (res > 0)
1803 {
1804 res -= dir_reclen(de);
1805 if (de->d_fileno &&
1806 !(fake_dot_dot && (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." ))) &&
1807 ((info = append_entry( buffer, io, length, de->d_name, NULL, mask, class ))))
1808 {
1809 last_info = info;
1810 if (io->u.Status == STATUS_BUFFER_OVERFLOW)
1811 {
1812 lseek( fd, (unsigned long)restart_pos, SEEK_SET );
1813 if (restart_info_pos) /* if we have a complete read already, return it */
1814 {
1815 io->u.Status = STATUS_SUCCESS;
1816 io->Information = restart_info_pos;
1817 last_info = restart_last_info;
1818 break;
1819 }
1820 /* otherwise restart from the start with a smaller size */
1821 size = (char *)de - data;
1822 if (!size) break;
1823 io->Information = 0;
1824 last_info = NULL;
1825 goto restart;
1826 }
1827 /* if we have to return but the buffer contains more data, restart with a smaller size */
1828 if (res > 0 && (single_entry || io->Information + max_dir_info_size(class) > length))
1829 {
1830 lseek( fd, (unsigned long)restart_pos, SEEK_SET );
1831 size = (char *)de + dir_reclen(de) - data;
1832 io->Information = restart_info_pos;
1833 last_info = restart_last_info;
1834 goto restart;
1835 }
1836 }
1837 /* move on to the next entry */
1838 if (res > 0)
1839 {
1840 de = (struct dirent *)((char *)de + dir_reclen(de));
1841 continue;
1842 }
1843 if (size < initial_size) break; /* already restarted once, give up now */
1844 size = min( size, length - io->Information );
1845 /* if size is too small don't bother to continue */
1846 if (size < max_dir_info_size(class) && last_info) break;
1847 restart_last_info = last_info;
1848 restart_info_pos = io->Information;
1849 restart:
1850 res = wine_getdirentries( fd, data, size, &restart_pos );
1851 de = (struct dirent *)data;
1852 }
1853
1854 if (last_info) last_info->next = 0;
1855 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1856 res = 0;
1857 done:
1858 if (data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
1859 return res;
1860 }
1861
1862 #ifdef _DARWIN_FEATURE_64_BIT_INODE
1863 #undef getdirentries
1864 #undef dirent
1865 #endif
1866
1867 #endif /* HAVE_GETDIRENTRIES */
1868
1869
1870 /***********************************************************************
1871 * read_directory_readdir
1872 *
1873 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
1874 */
1875 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1876 BOOLEAN single_entry, const UNICODE_STRING *mask,
1877 BOOLEAN restart_scan, FILE_INFORMATION_CLASS class )
1878 {
1879 DIR *dir;
1880 off_t i, old_pos = 0;
1881 struct dirent *de;
1882 union file_directory_info *info, *last_info = NULL;
1883
1884 if (!(dir = opendir( "." )))
1885 {
1886 io->u.Status = FILE_GetNtStatus();
1887 return;
1888 }
1889
1890 if (!restart_scan)
1891 {
1892 old_pos = lseek( fd, 0, SEEK_CUR );
1893 /* skip the right number of entries */
1894 for (i = 0; i < old_pos - 2; i++)
1895 {
1896 if (!readdir( dir ))
1897 {
1898 closedir( dir );
1899 io->u.Status = STATUS_NO_MORE_FILES;
1900 return;
1901 }
1902 }
1903 }
1904 io->u.Status = STATUS_SUCCESS;
1905
1906 for (;;)
1907 {
1908 if (old_pos == 0)
1909 info = append_entry( buffer, io, length, ".", NULL, mask, class );
1910 else if (old_pos == 1)
1911 info = append_entry( buffer, io, length, "..", NULL, mask, class );
1912 else if ((de = readdir( dir )))
1913 {
1914 if (strcmp( de->d_name, "." ) && strcmp( de->d_name, ".." ))
1915 info = append_entry( buffer, io, length, de->d_name, NULL, mask, class );
1916 else
1917 info = NULL;
1918 }
1919 else
1920 break;
1921 old_pos++;
1922 if (info)
1923 {
1924 last_info = info;
1925 if (io->u.Status == STATUS_BUFFER_OVERFLOW)
1926 {
1927 old_pos--; /* restore pos to previous entry */
1928 break;
1929 }
1930 if (single_entry) break;
1931 /* check if we still have enough space for the largest possible entry */
1932 if (io->Information + max_dir_info_size(class) > length) break;
1933 }
1934 }
1935
1936 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
1937 closedir( dir );
1938
1939 if (last_info) last_info->next = 0;
1940 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1941 }
1942
1943 /***********************************************************************
1944 * read_directory_stat
1945 *
1946 * Read a single file from a directory by determining whether the file
1947 * identified by mask exists using stat.
1948 */
1949 static int read_directory_stat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1950 BOOLEAN single_entry, const UNICODE_STRING *mask,
1951 BOOLEAN restart_scan, FILE_INFORMATION_CLASS class )
1952 {
1953 int unix_len, ret, used_default;
1954 char *unix_name;
1955 struct stat st;
1956
1957 TRACE("trying optimisation for file %s\n", debugstr_us( mask ));
1958
1959 unix_len = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), NULL, 0, NULL, NULL );
1960 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len + 1)))
1961 {
1962 io->u.Status = STATUS_NO_MEMORY;
1963 return 0;
1964 }
1965 ret = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), unix_name, unix_len,
1966 NULL, &used_default );
1967 if (ret > 0 && !used_default)
1968 {
1969 unix_name[ret] = 0;
1970 if (restart_scan)
1971 {
1972 lseek( fd, 0, SEEK_SET );
1973 }
1974 else if (lseek( fd, 0, SEEK_CUR ) != 0)
1975 {
1976 io->u.Status = STATUS_NO_MORE_FILES;
1977 ret = 0;
1978 goto done;
1979 }
1980
1981 ret = stat( unix_name, &st );
1982 if (!ret)
1983 {
1984 union file_directory_info *info = append_entry( buffer, io, length, unix_name, NULL, NULL, class );
1985 if (info)
1986 {
1987 info->next = 0;
1988 if (io->u.Status != STATUS_BUFFER_OVERFLOW) lseek( fd, 1, SEEK_CUR );
1989 }
1990 else io->u.Status = STATUS_NO_MORE_FILES;
1991 }
1992 }
1993 else ret = -1;
1994
1995 done:
1996 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1997
1998 TRACE("returning %d\n", ret);
1999
2000 return ret;
2001 }
2002
2003
2004 static inline WCHAR *mempbrkW( const WCHAR *ptr, const WCHAR *accept, size_t n )
2005 {
2006 const WCHAR *end;
2007 for (end = ptr + n; ptr < end; ptr++) if (strchrW( accept, *ptr )) return (WCHAR *)ptr;
2008 return NULL;
2009 }
2010
2011 /******************************************************************************
2012 * NtQueryDirectoryFile [NTDLL.@]
2013 * ZwQueryDirectoryFile [NTDLL.@]
2014 */
2015 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
2016 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
2017 PIO_STATUS_BLOCK io,
2018 PVOID buffer, ULONG length,
2019 FILE_INFORMATION_CLASS info_class,
2020 BOOLEAN single_entry,
2021 PUNICODE_STRING mask,
2022 BOOLEAN restart_scan )
2023 {
2024 int cwd, fd, needs_close;
2025 static const WCHAR wszWildcards[] = { '*','?',0 };
2026
2027 TRACE("(%p %p %p %p %p %p 0x%08x 0x%08x 0x%08x %s 0x%08x\n",
2028 handle, event, apc_routine, apc_context, io, buffer,
2029 length, info_class, single_entry, debugstr_us(mask),
2030 restart_scan);
2031
2032 if (event || apc_routine)
2033 {
2034 FIXME( "Unsupported yet option\n" );
2035 return io->u.Status = STATUS_NOT_IMPLEMENTED;
2036 }
2037 switch (info_class)
2038 {
2039 case FileDirectoryInformation:
2040 case FileBothDirectoryInformation:
2041 case FileFullDirectoryInformation:
2042 case FileIdBothDirectoryInformation:
2043 case FileIdFullDirectoryInformation:
2044 if (length < dir_info_size( info_class, 1 )) return io->u.Status = STATUS_INFO_LENGTH_MISMATCH;
2045 break;
2046 default:
2047 FIXME( "Unsupported file info class %d\n", info_class );
2048 return io->u.Status = STATUS_NOT_IMPLEMENTED;
2049 }
2050
2051 if ((io->u.Status = server_get_unix_fd( handle, FILE_LIST_DIRECTORY, &fd, &needs_close, NULL, NULL )) != STATUS_SUCCESS)
2052 return io->u.Status;
2053
2054 io->Information = 0;
2055
2056 RtlEnterCriticalSection( &dir_section );
2057
2058 if (show_dot_files == -1) init_options();
2059
2060 cwd = open( ".", O_RDONLY );
2061 if (fchdir( fd ) != -1)
2062 {
2063 struct stat st;
2064 fstat( fd, &st );
2065 curdir.dev = st.st_dev;
2066 curdir.ino = st.st_ino;
2067 #ifdef VFAT_IOCTL_READDIR_BOTH
2068 if ((read_directory_vfat( fd, io, buffer, length, single_entry,
2069 mask, restart_scan, info_class )) != -1) goto done;
2070 #endif
2071 if (mask && !mempbrkW( mask->Buffer, wszWildcards, mask->Length / sizeof(WCHAR) ) &&
2072 read_directory_stat( fd, io, buffer, length, single_entry,
2073 mask, restart_scan, info_class ) != -1) goto done;
2074 #ifdef USE_GETDENTS
2075 if ((read_directory_getdents( fd, io, buffer, length, single_entry,
2076 mask, restart_scan, info_class )) != -1) goto done;
2077 #elif defined HAVE_GETDIRENTRIES
2078 if ((read_directory_getdirentries( fd, io, buffer, length, single_entry,
2079 mask, restart_scan, info_class )) != -1) goto done;
2080 #endif
2081 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan, info_class );
2082
2083 done:
2084 if (cwd == -1 || fchdir( cwd ) == -1) chdir( "/" );
2085 }
2086 else io->u.Status = FILE_GetNtStatus();
2087
2088 RtlLeaveCriticalSection( &dir_section );
2089
2090 if (needs_close) close( fd );
2091 if (cwd != -1) close( cwd );
2092 TRACE( "=> %x (%ld)\n", io->u.Status, io->Information );
2093 return io->u.Status;
2094 }
2095
2096
2097 /***********************************************************************
2098 * find_file_in_dir
2099 *
2100 * Find a file in a directory the hard way, by doing a case-insensitive search.
2101 * The file found is appended to unix_name at pos.
2102 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
2103 */
2104 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
2105 int check_case, int *is_win_dir )
2106 {
2107 WCHAR buffer[MAX_DIR_ENTRY_LEN];
2108 UNICODE_STRING str;
2109 BOOLEAN spaces;
2110 DIR *dir;
2111 struct dirent *de;
2112 struct stat st;
2113 int ret, used_default, is_name_8_dot_3;
2114
2115 /* try a shortcut for this directory */
2116
2117 unix_name[pos++] = '/';
2118 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
2119 NULL, &used_default );
2120 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
2121 /* so it cannot match the file we are looking for */
2122 if (ret >= 0 && !used_default)
2123 {
2124 unix_name[pos + ret] = 0;
2125 if (!stat( unix_name, &st ))
2126 {
2127 if (is_win_dir) *is_win_dir = is_same_file( &windir, &st );
2128 return STATUS_SUCCESS;
2129 }
2130 }
2131 if (check_case) goto not_found; /* we want an exact match */
2132
2133 if (pos > 1) unix_name[pos - 1] = 0;
2134 else unix_name[1] = 0; /* keep the initial slash */
2135
2136 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
2137
2138 str.Buffer = (WCHAR *)name;
2139 str.Length = length * sizeof(WCHAR);
2140 str.MaximumLength = str.Length;
2141 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
2142
2143 if (!is_name_8_dot_3 && !get_dir_case_sensitivity( unix_name )) goto not_found;
2144
2145 /* now look for it through the directory */
2146
2147 #ifdef VFAT_IOCTL_READDIR_BOTH
2148 if (is_name_8_dot_3)
2149 {
2150 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
2151 if (fd != -1)
2152 {
2153 KERNEL_DIRENT *kde;
2154
2155 RtlEnterCriticalSection( &dir_section );
2156 if ((kde = start_vfat_ioctl( fd )))
2157 {
2158 unix_name[pos - 1] = '/';
2159 while (kde[0].d_reclen)
2160 {
2161 /* make sure names are null-terminated to work around an x86-64 kernel bug */
2162 size_t len = min(kde[0].d_reclen, sizeof(kde[0].d_name) - 1 );
2163 kde[0].d_name[len] = 0;
2164 len = min(kde[1].d_reclen, sizeof(kde[1].d_name) - 1 );
2165 kde[1].d_name[len] = 0;
2166
2167 if (kde[1].d_name[0])
2168 {
2169 ret = ntdll_umbstowcs( 0, kde[1].d_name, strlen(kde[1].d_name),
2170 buffer, MAX_DIR_ENTRY_LEN );
2171 if (ret == length && !memicmpW( buffer, name, length))
2172 {
2173 strcpy( unix_name + pos, kde[1].d_name );
2174 RtlLeaveCriticalSection( &dir_section );
2175 close( fd );
2176 goto success;
2177 }
2178 }
2179 ret = ntdll_umbstowcs( 0, kde[0].d_name, strlen(kde[0].d_name),
2180 buffer, MAX_DIR_ENTRY_LEN );
2181 if (ret == length && !memicmpW( buffer, name, length))
2182 {
2183 strcpy( unix_name + pos,
2184 kde[1].d_name[0] ? kde[1].d_name : kde[0].d_name );
2185 RtlLeaveCriticalSection( &dir_section );
2186 close( fd );
2187 goto success;
2188 }
2189 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)kde ) == -1)
2190 {
2191 RtlLeaveCriticalSection( &dir_section );
2192 close( fd );
2193 goto not_found;
2194 }
2195 }
2196 }
2197 RtlLeaveCriticalSection( &dir_section );
2198 close( fd );
2199 }
2200 /* fall through to normal handling */
2201 }
2202 #endif /* VFAT_IOCTL_READDIR_BOTH */
2203
2204 if (!(dir = opendir( unix_name )))
2205 {
2206 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
2207 else return FILE_GetNtStatus();
2208 }
2209 unix_name[pos - 1] = '/';
2210 str.Buffer = buffer;
2211 str.MaximumLength = sizeof(buffer);
2212 while ((de = readdir( dir )))
2213 {
2214 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
2215 if (ret == length && !memicmpW( buffer, name, length ))
2216 {
2217 strcpy( unix_name + pos, de->d_name );
2218 closedir( dir );
2219 goto success;
2220 }
2221
2222 if (!is_name_8_dot_3) continue;
2223
2224 str.Length = ret * sizeof(WCHAR);
2225 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
2226 {
2227 WCHAR short_nameW[12];
2228 ret = hash_short_file_name( &str, short_nameW );
2229 if (ret == length && !memicmpW( short_nameW, name, length ))
2230 {
2231 strcpy( unix_name + pos, de->d_name );
2232 closedir( dir );
2233 goto success;
2234 }
2235 }
2236 }
2237 closedir( dir );
2238
2239 not_found:
2240 unix_name[pos - 1] = 0;
2241 return STATUS_OBJECT_PATH_NOT_FOUND;
2242
2243 success:
2244 if (is_win_dir && !stat( unix_name, &st )) *is_win_dir = is_same_file( &windir, &st );
2245 return STATUS_SUCCESS;
2246 }
2247
2248
2249 #ifndef _WIN64
2250
2251 static const WCHAR catrootW[] = {'s','y','s','t','e','m','3','2','\\','c','a','t','r','o','o','t',0};
2252 static const WCHAR catroot2W[] = {'s','y','s','t','e','m','3','2','\\','c','a','t','r','o','o','t','2',0};
2253 static const WCHAR driversstoreW[] = {'s','y','s','t','e','m','3','2','\\','d','r','i','v','e','r','s','s','t','o','r','e',0};
2254 static const WCHAR driversetcW[] = {'s','y','s','t','e','m','3','2','\\','d','r','i','v','e','r','s','\\','e','t','c',0};
2255 static const WCHAR logfilesW[] = {'s','y','s','t','e','m','3','2','\\','l','o','g','f','i','l','e','s',0};
2256 static const WCHAR spoolW[] = {'s','y','s','t','e','m','3','2','\\','s','p','o','o','l',0};
2257 static const WCHAR system32W[] = {'s','y','s','t','e','m','3','2',0};
2258 static const WCHAR syswow64W[] = {'s','y','s','w','o','w','6','4',0};
2259 static const WCHAR sysnativeW[] = {'s','y','s','n','a','t','i','v','e',0};
2260 static const WCHAR regeditW[] = {'r','e','g','e','d','i','t','.','e','x','e',0};
2261 static const WCHAR wow_regeditW[] = {'s','y','s','w','o','w','6','4','\\','r','e','g','e','d','i','t','.','e','x','e',0};
2262
2263 static struct
2264 {
2265 const WCHAR *source;
2266 const WCHAR *dos_target;
2267 const char *unix_target;
2268 } redirects[] =
2269 {
2270 { catrootW, NULL, NULL },
2271 { catroot2W, NULL, NULL },
2272 { driversstoreW, NULL, NULL },
2273 { driversetcW, NULL, NULL },
2274 { logfilesW, NULL, NULL },
2275 { spoolW, NULL, NULL },
2276 { system32W, syswow64W, NULL },
2277 { sysnativeW, system32W, NULL },
2278 { regeditW, wow_regeditW, NULL }
2279 };
2280
2281 static unsigned int nb_redirects;
2282
2283
2284 /***********************************************************************
2285 * get_redirect_target
2286 *
2287 * Find the target unix name for a redirected dir.
2288 */
2289 static const char *get_redirect_target( const char *windows_dir, const WCHAR *name )
2290 {
2291 int used_default, len, pos, win_len = strlen( windows_dir );
2292 char *unix_name, *unix_target = NULL;
2293 NTSTATUS status;
2294
2295 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, win_len + MAX_DIR_ENTRY_LEN + 2 )))
2296 return NULL;
2297 memcpy( unix_name, windows_dir, win_len );
2298 pos = win_len;
2299
2300 while (*name)
2301 {
2302 const WCHAR *end, *next;
2303
2304 for (end = name; *end; end++) if (IS_SEPARATOR(*end)) break;
2305 for (next = end; *next; next++) if (!IS_SEPARATOR(*next)) break;
2306
2307 status = find_file_in_dir( unix_name, pos, name, end - name, FALSE, NULL );
2308 if (status == STATUS_OBJECT_PATH_NOT_FOUND && !*next) /* not finding last element is ok */
2309 {
2310 len = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
2311 MAX_DIR_ENTRY_LEN - (pos - win_len), NULL, &used_default );
2312 if (len > 0 && !used_default)
2313 {
2314 unix_name[pos] = '/';
2315 pos += len + 1;
2316 unix_name[pos] = 0;
2317 break;
2318 }
2319 }
2320 if (status) goto done;
2321 pos += strlen( unix_name + pos );
2322 name = next;
2323 }
2324
2325 if ((unix_target = RtlAllocateHeap( GetProcessHeap(), 0, pos - win_len )))
2326 memcpy( unix_target, unix_name + win_len + 1, pos - win_len );
2327
2328 done:
2329 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2330 return unix_target;
2331 }
2332
2333
2334 /***********************************************************************
2335 * init_redirects
2336 */
2337 static void init_redirects(void)
2338 {
2339 UNICODE_STRING nt_name;
2340 ANSI_STRING unix_name;
2341 NTSTATUS status;
2342 struct stat st;
2343 unsigned int i;
2344
2345 if (!RtlDosPathNameToNtPathName_U( user_shared_data->NtSystemRoot, &nt_name, NULL, NULL ))
2346 {
2347 ERR( "can't convert %s\n", debugstr_w(user_shared_data->NtSystemRoot) );
2348 return;
2349 }
2350 status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN_IF, FALSE );
2351 RtlFreeUnicodeString( &nt_name );
2352 if (status)
2353 {
2354 ERR( "cannot open %s (%x)\n", debugstr_w(user_shared_data->NtSystemRoot), status );
2355 return;
2356 }
2357 if (!stat( unix_name.Buffer, &st ))
2358 {
2359 windir.dev = st.st_dev;
2360 windir.ino = st.st_ino;
2361 nb_redirects = sizeof(redirects) / sizeof(redirects[0]);
2362 for (i = 0; i < nb_redirects; i++)
2363 {
2364 if (!redirects[i].dos_target) continue;
2365 redirects[i].unix_target = get_redirect_target( unix_name.Buffer, redirects[i].dos_target );
2366 TRACE( "%s -> %s\n", debugstr_w(redirects[i].source), redirects[i].unix_target );
2367 }
2368 }
2369 RtlFreeAnsiString( &unix_name );
2370
2371 }
2372
2373
2374 /***********************************************************************
2375 * match_redirect
2376 *
2377 * Check if path matches a redirect name. If yes, return matched length.
2378 */
2379 static int match_redirect( const WCHAR *path, int len, const WCHAR *redir, int check_case )
2380 {
2381 int i = 0;
2382
2383 while (i < len && *redir)
2384 {
2385 if (IS_SEPARATOR(path[i]))
2386 {
2387 if (*redir++ != '\\') return 0;
2388 while (i < len && IS_SEPARATOR(path[i])) i++;
2389 continue; /* move on to next path component */
2390 }
2391 else if (check_case)
2392 {
2393 if (path[i] != *redir) return 0;
2394 }
2395 else
2396 {
2397 if (tolowerW(path[i]) != tolowerW(*redir)) return 0;
2398 }
2399 i++;
2400 redir++;
2401 }
2402 if (*redir) return 0;
2403 if (i < len && !IS_SEPARATOR(path[i])) return 0;
2404 while (i < len && IS_SEPARATOR(path[i])) i++;
2405 return i;
2406 }
2407
2408
2409 /***********************************************************************
2410 * get_redirect_path
2411 *
2412 * Retrieve the Unix path corresponding to a redirected path if any.
2413 */
2414 static int get_redirect_path( char *unix_name, int pos, const WCHAR *name, int length, int check_case )
2415 {
2416 unsigned int i;
2417 int len;
2418
2419 for (i = 0; i < nb_redirects; i++)
2420 {
2421 if ((len = match_redirect( name, length, redirects[i].source, check_case )))
2422 {
2423 if (!redirects[i].unix_target) break;
2424 unix_name[pos++] = '/';
2425 strcpy( unix_name + pos, redirects[i].unix_target );
2426 return len;
2427 }
2428 }
2429 return 0;
2430 }
2431
2432 #else /* _WIN64 */
2433
2434 /* there are no redirects on 64-bit */
2435
2436 static const unsigned int nb_redirects = 0;
2437
2438 static int get_redirect_path( char *unix_name, int pos, const WCHAR *name, int length, int check_case )
2439 {
2440 return 0;
2441 }
2442
2443 #endif
2444
2445 /***********************************************************************
2446 * DIR_init_windows_dir
2447 */
2448 void DIR_init_windows_dir( const WCHAR *win, const WCHAR *sys )
2449 {
2450 /* FIXME: should probably store paths as NT file names */
2451
2452 RtlCreateUnicodeString( &system_dir, sys );
2453
2454 #ifndef _WIN64
2455 if (is_wow64) init_redirects();
2456 #endif
2457 }
2458
2459
2460 /******************************************************************************
2461 * get_dos_device
2462 *
2463 * Get the Unix path of a DOS device.
2464 */
2465 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
2466 {
2467 const char *config_dir = wine_get_config_dir();
2468 struct stat st;
2469 char *unix_name, *new_name, *dev;
2470 unsigned int i;
2471 int unix_len;
2472
2473 /* make sure the device name is ASCII */
2474 for (i = 0; i < name_len; i++)
2475 if (name[i] <= 32 || name[i] >= 127) return STATUS_BAD_DEVICE_TYPE;
2476
2477 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
2478
2479 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
2480 return STATUS_NO_MEMORY;
2481
2482 strcpy( unix_name, config_dir );
2483 strcat( unix_name, "/dosdevices/" );
2484 dev = unix_name + strlen(unix_name);
2485
2486 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
2487 dev[i] = 0;
2488
2489 /* special case for drive devices */
2490 if (name_len == 2 && dev[1] == ':')
2491 {
2492 dev[i++] = ':';
2493 dev[i] = 0;
2494 }
2495
2496 for (;;)
2497 {
2498 if (!stat( unix_name, &st ))
2499 {
2500 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
2501 unix_name_ret->Buffer = unix_name;
2502 unix_name_ret->Length = strlen(unix_name);
2503 unix_name_ret->MaximumLength = unix_len;
2504 return STATUS_SUCCESS;
2505 }
2506 if (!dev) break;
2507
2508 /* now try some defaults for it */
2509 if (!strcmp( dev, "aux" ))
2510 {
2511 strcpy( dev, "com1" );
2512 continue;
2513 }
2514 if (!strcmp( dev, "prn" ))
2515 {
2516 strcpy( dev, "lpt1" );
2517 continue;
2518 }
2519 if (!strcmp( dev, "nul" ))
2520 {
2521 strcpy( unix_name, "/dev/null" );
2522 dev = NULL; /* last try */
2523 continue;
2524 }
2525
2526 new_name = NULL;
2527 if (dev[1] == ':' && dev[2] == ':') /* drive device */
2528 {
2529 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
2530 new_name = get_default_drive_device( unix_name );
2531 }
2532 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( atoi(dev + 3 ));
2533 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( atoi(dev + 3 ));
2534
2535 if (!new_name) break;
2536
2537 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2538 unix_name = new_name;
2539 unix_len = strlen(unix_name) + 1;
2540 dev = NULL; /* last try */
2541 }
2542 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2543 return STATUS_BAD_DEVICE_TYPE;
2544 }
2545
2546
2547 /* return the length of the DOS namespace prefix if any */
2548 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
2549 {
2550 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
2551 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
2552
2553 if (name->Length > sizeof(nt_prefixW) &&
2554 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
2555 return sizeof(nt_prefixW) / sizeof(WCHAR);
2556
2557 if (name->Length > sizeof(dosdev_prefixW) &&
2558 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
2559 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
2560
2561 return 0;
2562 }
2563
2564
2565 /******************************************************************************
2566 * find_file_id
2567 *
2568 * Recursively search directories from the dir queue for a given inode.
2569 */
2570 static NTSTATUS find_file_id( ANSI_STRING *unix_name, ULONGLONG file_id, dev_t dev )
2571 {
2572 unsigned int pos;
2573 DIR *dir;
2574 struct dirent *de;
2575 NTSTATUS status;
2576 struct stat st;
2577
2578 while (!(status = next_dir_in_queue( unix_name->Buffer )))
2579 {
2580 if (!(dir = opendir( unix_name->Buffer ))) continue;
2581 TRACE( "searching %s for %s\n", unix_name->Buffer, wine_dbgstr_longlong(file_id) );
2582 pos = strlen( unix_name->Buffer );
2583 if (pos + MAX_DIR_ENTRY_LEN >= unix_name->MaximumLength/sizeof(WCHAR))
2584 {
2585 char *new = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name->Buffer,
2586 unix_name->MaximumLength * 2 );
2587 if (!new)
2588 {
2589 closedir( dir );
2590 return STATUS_NO_MEMORY;
2591 }
2592 unix_name->MaximumLength *= 2;
2593 unix_name->Buffer = new;
2594 }
2595 unix_name->Buffer[pos++] = '/';
2596 while ((de = readdir( dir )))
2597 {
2598 if (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." )) continue;
2599 strcpy( unix_name->Buffer + pos, de->d_name );
2600 if (lstat( unix_name->Buffer, &st ) == -1) continue;
2601 if (st.st_dev != dev) continue;
2602 if (st.st_ino == file_id)
2603 {
2604 closedir( dir );
2605 return STATUS_SUCCESS;
2606 }
2607 if (!S_ISDIR( st.st_mode )) continue;
2608 if ((status = add_dir_to_queue( unix_name->Buffer )) != STATUS_SUCCESS)
2609 {
2610 closedir( dir );
2611 return status;
2612 }
2613 }
2614 closedir( dir );
2615 }
2616 return status;
2617 }
2618
2619
2620 /******************************************************************************
2621 * file_id_to_unix_file_name
2622 *
2623 * Lookup a file from its file id instead of its name.
2624 */
2625 NTSTATUS file_id_to_unix_file_name( const OBJECT_ATTRIBUTES *attr, ANSI_STRING *unix_name )
2626 {
2627 enum server_fd_type type;
2628 int old_cwd, root_fd, needs_close;
2629 NTSTATUS status;
2630 ULONGLONG file_id;
2631 struct stat st, root_st;
2632
2633 if (attr->ObjectName->Length != sizeof(ULONGLONG)) return STATUS_OBJECT_PATH_SYNTAX_BAD;
2634 if (!attr->RootDirectory) return STATUS_INVALID_PARAMETER;
2635 memcpy( &file_id, attr->ObjectName->Buffer, sizeof(file_id) );
2636
2637 unix_name->MaximumLength = 2 * MAX_DIR_ENTRY_LEN + 4;
2638 if (!(unix_name->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, unix_name->MaximumLength )))
2639 return STATUS_NO_MEMORY;
2640 strcpy( unix_name->Buffer, "." );
2641
2642 if ((status = server_get_unix_fd( attr->RootDirectory, 0, &root_fd, &needs_close, &type, NULL )))
2643 goto done;
2644
2645 if (type != FD_TYPE_DIR)
2646 {
2647 status = STATUS_OBJECT_TYPE_MISMATCH;
2648 goto done;
2649 }
2650
2651 fstat( root_fd, &root_st );
2652 if (root_st.st_ino == file_id) /* shortcut for "." */
2653 {
2654 status = STATUS_SUCCESS;
2655 goto done;
2656 }
2657
2658 RtlEnterCriticalSection( &dir_section );
2659 if ((old_cwd = open( ".", O_RDONLY )) != -1 && fchdir( root_fd ) != -1)
2660 {
2661 /* shortcut for ".." */
2662 if (!stat( "..", &st ) && st.st_dev == root_st.st_dev && st.st_ino == file_id)
2663 {
2664 strcpy( unix_name->Buffer, ".." );
2665 status = STATUS_SUCCESS;
2666 }
2667 else
2668 {
2669 status = add_dir_to_queue( "." );
2670 if (!status)
2671 status = find_file_id( unix_name, file_id, root_st.st_dev );
2672 if (!status) /* get rid of "./" prefix */
2673 memmove( unix_name->Buffer, unix_name->Buffer + 2, strlen(unix_name->Buffer) - 1 );
2674 flush_dir_queue();
2675 }
2676 if (fchdir( old_cwd ) == -1) chdir( "/" );
2677 }
2678 else status = FILE_GetNtStatus();
2679 RtlLeaveCriticalSection( &dir_section );
2680 if (old_cwd != -1) close( old_cwd );
2681
2682 done:
2683 if (status == STATUS_SUCCESS)
2684 {
2685 TRACE( "%s -> %s\n", wine_dbgstr_longlong(file_id), debugstr_a(unix_name->Buffer) );
2686 unix_name->Length = strlen( unix_name->Buffer );
2687 }
2688 else
2689 {
2690 TRACE( "%s not found in dir %p\n", wine_dbgstr_longlong(file_id), attr->RootDirectory );
2691 RtlFreeHeap( GetProcessHeap(), 0, unix_name->Buffer );
2692 }
2693 if (needs_close) close( root_fd );
2694 return status;
2695 }
2696
2697
2698 /******************************************************************************
2699 * lookup_unix_name
2700 *
2701 * Helper for nt_to_unix_file_name
2702 */
2703 static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer, int unix_len, int pos,
2704 UINT disposition, BOOLEAN check_case )
2705 {
2706 NTSTATUS status;
2707 int ret, used_default, len;
2708 struct stat st;
2709 char *unix_name = *buffer;
2710 const BOOL redirect = nb_redirects && ntdll_get_thread_data()->wow64_redir;
2711
2712 /* try a shortcut first */
2713
2714 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
2715 NULL, &used_default );
2716
2717 while (name_len && IS_SEPARATOR(*name))
2718 {
2719 name++;
2720 name_len--;
2721 }
2722
2723 if (ret >= 0 && !used_default) /* if we used the default char the name didn't convert properly */
2724 {
2725 char *p;
2726 unix_name[pos + ret] = 0;
2727 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
2728 if (!redirect || (!strstr( unix_name, "/windows/") && strncmp( unix_name, "windows/", 8 )))
2729 {
2730 if (!stat( unix_name, &st ))
2731 {
2732 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
2733 if (disposition == FILE_CREATE)
2734 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
2735 return STATUS_SUCCESS;
2736 }
2737 }
2738 }
2739
2740 if (!name_len) /* empty name -> drive root doesn't exist */
2741 return STATUS_OBJECT_PATH_NOT_FOUND;
2742 if (check_case && !redirect && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
2743 return STATUS_OBJECT_NAME_NOT_FOUND;
2744
2745 /* now do it component by component */
2746
2747 while (name_len)
2748 {
2749 const WCHAR *end, *next;
2750 int is_win_dir = 0;
2751
2752 end = name;
2753 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
2754 next = end;
2755 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
2756 name_len -= next - name;
2757
2758 /* grow the buffer if needed */
2759
2760 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
2761 {
2762 char *new_name;
2763 unix_len += 2 * MAX_DIR_ENTRY_LEN;
2764 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
2765 return STATUS_NO_MEMORY;
2766 unix_name = *buffer = new_name;
2767 }
2768
2769 status = find_file_in_dir( unix_name, pos, name, end - name,
2770 check_case, redirect ? &is_win_dir : NULL );
2771
2772 /* if this is the last element, not finding it is not necessarily fatal */
2773 if (!name_len)
2774 {
2775 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
2776 {
2777 status = STATUS_OBJECT_NAME_NOT_FOUND;
2778 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
2779 {
2780 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
2781 MAX_DIR_ENTRY_LEN, NULL, &used_default );
2782 if (ret > 0 && !used_default)
2783 {
2784 unix_name[pos] = '/';
2785 unix_name[pos + 1 + ret] = 0;
2786 status = STATUS_NO_SUCH_FILE;
2787 break;
2788 }
2789 }
2790 }
2791 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
2792 {
2793 status = STATUS_OBJECT_NAME_COLLISION;
2794 }
2795 }
2796
2797 if (status != STATUS_SUCCESS) break;
2798
2799 pos += strlen( unix_name + pos );
2800 name = next;
2801
2802 if (is_win_dir && (len = get_redirect_path( unix_name, pos, name, name_len, check_case )))
2803 {
2804 name += len;
2805 name_len -= len;
2806 pos += strlen( unix_name + pos );
2807 TRACE( "redirecting -> %s + %s\n", debugstr_a(unix_name), debugstr_w(name) );
2808 }
2809 }
2810
2811 return status;
2812 }
2813
2814
2815 /******************************************************************************
2816 * nt_to_unix_file_name_attr
2817 */
2818 NTSTATUS nt_to_unix_file_name_attr( const OBJECT_ATTRIBUTES *attr, ANSI_STRING *unix_name_ret,
2819 UINT disposition )
2820 {
2821 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
2822 enum server_fd_type type;
2823 int old_cwd, root_fd, needs_close;
2824 const WCHAR *name, *p;
2825 char *unix_name;
2826 int name_len, unix_len;
2827 NTSTATUS status;
2828 BOOLEAN check_case = !(attr->Attributes & OBJ_CASE_INSENSITIVE);
2829
2830 if (!attr->RootDirectory) /* without root dir fall back to normal lookup */
2831 return wine_nt_to_unix_file_name( attr->ObjectName, unix_name_ret, disposition, check_case );
2832
2833 name = attr->ObjectName->Buffer;
2834 name_len = attr->ObjectName->Length / sizeof(WCHAR);
2835
2836 if (name_len && IS_SEPARATOR(name[0])) return STATUS_INVALID_PARAMETER;
2837
2838 /* check for invalid characters */
2839 for (p = name; p < name + name_len; p++)
2840 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
2841
2842 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
2843 unix_len += MAX_DIR_ENTRY_LEN + 3;
2844 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
2845 return STATUS_NO_MEMORY;
2846 unix_name[0] = '.';
2847
2848 if (!(status = server_get_unix_fd( attr->RootDirectory, 0, &root_fd, &needs_close, &type, NULL )))
2849 {
2850 if (type != FD_TYPE_DIR)
2851 {
2852 if (needs_close) close( root_fd );
2853 status = STATUS_BAD_DEVICE_TYPE;
2854 }
2855 else
2856 {
2857 RtlEnterCriticalSection( &dir_section );
2858 if ((old_cwd = open( ".", O_RDONLY )) != -1 && fchdir( root_fd ) != -1)
2859 {
2860 status = lookup_unix_name( name, name_len, &unix_name, unix_len, 1,
2861 disposition, check_case );
2862 if (fchdir( old_cwd ) == -1) chdir( "/" );
2863 }
2864 else status = FILE_GetNtStatus();
2865 RtlLeaveCriticalSection( &dir_section );
2866 if (old_cwd != -1) close( old_cwd );
2867 if (needs_close) close( root_fd );
2868 }
2869 }
2870 else if (status == STATUS_OBJECT_TYPE_MISMATCH) status = STATUS_BAD_DEVICE_TYPE;
2871
2872 if (status == STATUS_SUCCESS || status == STATUS_NO_SUCH_FILE)
2873 {
2874 TRACE( "%s -> %s\n", debugstr_us(attr->ObjectName), debugstr_a(unix_name) );
2875 unix_name_ret->Buffer = unix_name;
2876 unix_name_ret->Length = strlen(unix_name);
2877 unix_name_ret->MaximumLength = unix_len;
2878 }
2879 else
2880 {
2881 TRACE( "%s not found in %s\n", debugstr_w(name), unix_name );
2882 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2883 }
2884 return status;
2885 }
2886
2887
2888 /******************************************************************************
2889 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
2890 *
2891 * Convert a file name from NT namespace to Unix namespace.
2892 *
2893 * If disposition is not FILE_OPEN or FILE_OVERWRITE, the last path
2894 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
2895 * returned, but the unix name is still filled in properly.
2896 */
2897 NTSTATUS CDECL wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
2898 UINT disposition, BOOLEAN check_case )
2899 {
2900 static const WCHAR unixW[] = {'u','n','i','x'};
2901 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
2902
2903 NTSTATUS status = STATUS_SUCCESS;
2904 const char *config_dir = wine_get_config_dir();
2905 const WCHAR *name, *p;
2906 struct stat st;
2907 char *unix_name;
2908 int pos, ret, name_len, unix_len, prefix_len, used_default;
2909 WCHAR prefix[MAX_DIR_ENTRY_LEN];
2910 BOOLEAN is_unix = FALSE;
2911
2912 name = nameW->Buffer;
2913 name_len = nameW->Length / sizeof(WCHAR);
2914
2915 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
2916
2917 if (!(pos = get_dos_prefix_len( nameW )))
2918 return STATUS_BAD_DEVICE_TYPE; /* no DOS prefix, assume NT native name */
2919
2920 name += pos;
2921 name_len -= pos;
2922
2923 /* check for sub-directory */
2924 for (pos = 0; pos < name_len; pos++)
2925 {
2926 if (IS_SEPARATOR(name[pos])) break;
2927 if (name[pos] < 32 || strchrW( invalid_charsW, name[pos] ))
2928 return STATUS_OBJECT_NAME_INVALID;
2929 }
2930 if (pos > MAX_DIR_ENTRY_LEN)
2931 return STATUS_OBJECT_NAME_INVALID;
2932
2933 if (pos == name_len) /* no subdir, plain DOS device */
2934 return get_dos_device( name, name_len, unix_name_ret );
2935
2936 for (prefix_len = 0; prefix_len < pos; prefix_len++)
2937 prefix[prefix_len] = tolowerW(name[prefix_len]);
2938
2939 name += prefix_len;
2940 name_len -= prefix_len;
2941
2942 /* check for invalid characters (all chars except 0 are valid for unix) */
2943 is_unix = (prefix_len == 4 && !memcmp( prefix, unixW, sizeof(unixW) ));
2944 if (is_unix)
2945 {
2946 for (p = name; p < name + name_len; p++)
2947 if (!*p) return STATUS_OBJECT_NAME_INVALID;
2948 check_case = TRUE;
2949 }
2950 else
2951 {
2952 for (p = name; p < name + name_len; p++)
2953 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
2954 }
2955
2956 unix_len = ntdll_wcstoumbs( 0, prefix, prefix_len, NULL, 0, NULL, NULL );
2957 unix_len += ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
2958 unix_len += MAX_DIR_ENTRY_LEN + 3;
2959 unix_len += strlen(config_dir) + sizeof("/dosdevices/");
2960 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
2961 return STATUS_NO_MEMORY;
2962 strcpy( unix_name, config_dir );
2963 strcat( unix_name, "/dosdevices/" );
2964 pos = strlen(unix_name);
2965
2966 ret = ntdll_wcstoumbs( 0, prefix, prefix_len, unix_name + pos, unix_len - pos - 1,
2967 NULL, &used_default );
2968 if (!ret || used_default)
2969 {
2970 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2971 return STATUS_OBJECT_NAME_INVALID;
2972 }
2973 pos += ret;
2974
2975 /* check if prefix exists (except for DOS drives to avoid extra stat calls) */
2976
2977 if (prefix_len != 2 || prefix[1] != ':')
2978 {
2979 unix_name[pos] = 0;
2980 if (lstat( unix_name, &st ) == -1 && errno == ENOENT)
2981 {
2982 if (!is_unix)
2983 {
2984 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
2985 return STATUS_BAD_DEVICE_TYPE;
2986 }
2987 pos = 0; /* fall back to unix root */
2988 }
2989 }
2990
2991 status = lookup_unix_name( name, name_len, &unix_name, unix_len, pos, disposition, check_case );
2992 if (status == STATUS_SUCCESS || status == STATUS_NO_SUCH_FILE)
2993 {
2994 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
2995 unix_name_ret->Buffer = unix_name;
2996 unix_name_ret->Length = strlen(unix_name);
2997 unix_name_ret->MaximumLength = unix_len;
2998 }
2999 else
3000 {
3001 TRACE( "%s not found in %s\n", debugstr_w(name), unix_name );
3002 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
3003 }
3004 return status;
3005 }
3006
3007
3008 /******************************************************************
3009 * RtlWow64EnableFsRedirection (NTDLL.@)
3010 */
3011 NTSTATUS WINAPI RtlWow64EnableFsRedirection( BOOLEAN enable )
3012 {
3013 if (!is_wow64) return STATUS_NOT_IMPLEMENTED;
3014 ntdll_get_thread_data()->wow64_redir = enable;
3015 return STATUS_SUCCESS;
3016 }
3017
3018
3019 /******************************************************************
3020 * RtlWow64EnableFsRedirectionEx (NTDLL.@)
3021 */
3022 NTSTATUS WINAPI RtlWow64EnableFsRedirectionEx( ULONG disable, ULONG *old_value )
3023 {
3024 if (!is_wow64) return STATUS_NOT_IMPLEMENTED;
3025 *old_value = !ntdll_get_thread_data()->wow64_redir;
3026 ntdll_get_thread_data()->wow64_redir = !disable;
3027 return STATUS_SUCCESS;
3028 }
3029
3030
3031 /******************************************************************
3032 * RtlDoesFileExists_U (NTDLL.@)
3033 */
3034 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
3035 {
3036 UNICODE_STRING nt_name;
3037 FILE_BASIC_INFORMATION basic_info;
3038 OBJECT_ATTRIBUTES attr;
3039 BOOLEAN ret;
3040
3041 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
3042
3043 attr.Length = sizeof(attr);
3044 attr.RootDirectory = 0;
3045 attr.ObjectName = &nt_name;
3046 attr.Attributes = OBJ_CASE_INSENSITIVE;
3047 attr.SecurityDescriptor = NULL;
3048 attr.SecurityQualityOfService = NULL;
3049
3050 ret = NtQueryAttributesFile(&attr, &basic_info) == STATUS_SUCCESS;
3051
3052 RtlFreeUnicodeString( &nt_name );
3053 return ret;
3054 }
3055
3056
3057 /***********************************************************************
3058 * DIR_unmount_device
3059 *
3060 * Unmount the specified device.
3061 */
3062 NTSTATUS DIR_unmount_device( HANDLE handle )
3063 {
3064 NTSTATUS status;
3065 int unix_fd, needs_close;
3066
3067 if (!(status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL, NULL )))
3068 {
3069 struct stat st;
3070 char *mount_point = NULL;
3071
3072 if (fstat( unix_fd, &st ) == -1 || !is_valid_mounted_device( &st ))
3073 status = STATUS_INVALID_PARAMETER;
3074 else
3075 {
3076 if ((mount_point = get_device_mount_point( st.st_rdev )))
3077 {
3078 #ifdef __APPLE__
3079 static const char umount[] = "diskutil unmount >/dev/null 2>&1 ";
3080 #else
3081 static const char umount[] = "umount >/dev/null 2>&1 ";
3082 #endif
3083 char *cmd = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mount_point)+sizeof(umount));
3084 if (cmd)
3085 {
3086 strcpy( cmd, umount );
3087 strcat( cmd, mount_point );
3088 system( cmd );
3089 RtlFreeHeap( GetProcessHeap(), 0, cmd );
3090 #ifdef linux
3091 /* umount will fail to release the loop device since we still have
3092 a handle to it, so we release it here */
3093 if (major(st.st_rdev) == LOOP_MAJOR) ioctl( unix_fd, 0x4c01 /*LOOP_CLR_FD*/, 0 );
3094 #endif
3095 }
3096 RtlFreeHeap( GetProcessHeap(), 0, mount_point );
3097 }
3098 }
3099 if (needs_close) close( unix_fd );
3100 }
3101 return status;
3102 }
3103
3104
3105 /******************************************************************************
3106 * DIR_get_unix_cwd
3107 *
3108 * Retrieve the Unix name of the current directory; helper for wine_unix_to_nt_file_name.
3109 * Returned value must be freed by caller.
3110 */
3111 NTSTATUS DIR_get_unix_cwd( char **cwd )
3112 {
3113 int old_cwd, unix_fd, needs_close;
3114 CURDIR *curdir;
3115 HANDLE handle;
3116 NTSTATUS status;
3117
3118 RtlAcquirePebLock();
3119
3120 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
3121 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
3122 else
3123 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
3124
3125 if (!(handle = curdir->Handle))
3126 {
3127 UNICODE_STRING dirW;
3128 OBJECT_ATTRIBUTES attr;
3129 IO_STATUS_BLOCK io;
3130
3131 if (!RtlDosPathNameToNtPathName_U( curdir->DosPath.Buffer, &dirW, NULL, NULL ))
3132 {
3133 status = STATUS_OBJECT_NAME_INVALID;
3134 goto done;
3135 }
3136 attr.Length = sizeof(attr);
3137 attr.RootDirectory = 0;
3138 attr.Attributes = OBJ_CASE_INSENSITIVE;
3139 attr.ObjectName = &dirW;
3140 attr.SecurityDescriptor = NULL;
3141 attr.SecurityQualityOfService = NULL;
3142
3143 status = NtOpenFile( &handle, 0, &attr, &io, 0,
3144 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
3145 RtlFreeUnicodeString( &dirW );
3146 if (status != STATUS_SUCCESS) goto done;
3147 }
3148
3149 if ((status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL, NULL )) == STATUS_SUCCESS)
3150 {
3151 RtlEnterCriticalSection( &dir_section );
3152
3153 if ((old_cwd = open(".", O_RDONLY)) != -1 && fchdir( unix_fd ) != -1)
3154 {
3155 unsigned int size = 512;
3156
3157 for (;;)
3158 {
3159 if (!(*cwd = RtlAllocateHeap( GetProcessHeap(), 0, size )))
3160 {
3161 status = STATUS_NO_MEMORY;
3162 break;
3163 }
3164 if (getcwd( *cwd, size )) break;
3165 RtlFreeHeap( GetProcessHeap(), 0, *cwd );
3166 if (errno != ERANGE)
3167 {
3168 status = STATUS_OBJECT_PATH_INVALID;
3169 break;
3170 }
3171 size *= 2;
3172 }
3173 if (fchdir( old_cwd ) == -1) chdir( "/" );
3174 }
3175 else status = FILE_GetNtStatus();
3176
3177 RtlLeaveCriticalSection( &dir_section );
3178 if (old_cwd != -1) close( old_cwd );
3179 if (needs_close) close( unix_fd );
3180 }
3181 if (!curdir->Handle) NtClose( handle );
3182
3183 done:
3184 RtlReleasePebLock();
3185 return status;
3186 }
3187
3188 struct read_changes_info
3189 {
3190 HANDLE FileHandle;
3191 PVOID Buffer;
3192 ULONG BufferSize;
3193 PIO_APC_ROUTINE apc;
3194 void *apc_arg;
3195 };
3196
3197 /* callback for ioctl user APC */
3198 static void WINAPI read_changes_user_apc( void *arg, IO_STATUS_BLOCK *io, ULONG reserved )
3199 {
3200 struct read_changes_info *info = arg;
3201 if (info->apc) info->apc( info->apc_arg, io, reserved );
3202 RtlFreeHeap( GetProcessHeap(), 0, info );
3203 }
3204
3205 static NTSTATUS read_changes_apc( void *user, PIO_STATUS_BLOCK iosb, NTSTATUS status, void **apc )
3206 {
3207 struct read_changes_info *info = user;
3208 char data[PATH_MAX];
3209 NTSTATUS ret;
3210 int size;
3211
3212 SERVER_START_REQ( read_change )
3213 {
3214 req->handle = wine_server_obj_handle( info->FileHandle );
3215 wine_server_set_reply( req, data, PATH_MAX );
3216 ret = wine_server_call( req );
3217 size = wine_server_reply_size( reply );
3218 }
3219 SERVER_END_REQ;
3220
3221 if (ret == STATUS_SUCCESS && info->Buffer)
3222 {
3223 PFILE_NOTIFY_INFORMATION pfni = info->Buffer;
3224 int i, left = info->BufferSize;
3225 DWORD *last_entry_offset = NULL;
3226 struct filesystem_event *event = (struct filesystem_event*)data;
3227
3228 while (size && left >= sizeof(*pfni))
3229 {
3230 /* convert to an NT style path */
3231 for (i=0; i<event->len; i++)
3232 if (event->name[i] == '/')
3233 event->name[i] = '\\';
3234
3235 pfni->Action = event->action;
3236 pfni->FileNameLength = ntdll_umbstowcs( 0, event->name, event->len, pfni->FileName,
3237 (left - offsetof(FILE_NOTIFY_INFORMATION, FileName)) / sizeof(WCHAR));
3238 last_entry_offset = &pfni->NextEntryOffset;
3239
3240 if(pfni->FileNameLength == -1 || pfni->FileNameLength == -2)
3241 break;
3242
3243 i = offsetof(FILE_NOTIFY_INFORMATION, FileName[pfni->FileNameLength]);
3244 pfni->FileNameLength *= sizeof(WCHAR);
3245 pfni->NextEntryOffset = i;
3246 pfni = (FILE_NOTIFY_INFORMATION*)((char*)pfni + i);
3247 left -= i;
3248
3249 i = (offsetof(struct filesystem_event, name[event->len])
3250 + sizeof(int)-1) / sizeof(int) * sizeof(int);
3251 event = (struct filesystem_event*)((char*)event + i);
3252 size -= i;
3253 }
3254
3255 if (size)
3256 {
3257 ret = STATUS_NOTIFY_ENUM_DIR;
3258 size = 0;
3259 }
3260 else
3261 {
3262 *last_entry_offset = 0;
3263 size = info->BufferSize - left;
3264 }
3265 }
3266 else
3267 {
3268 ret = STATUS_NOTIFY_ENUM_DIR;
3269 size = 0;
3270 }
3271
3272 iosb->u.Status = ret;
3273 iosb->Information = size;
3274 *apc = read_changes_user_apc;
3275 return ret;
3276 }
3277
3278 #define FILE_NOTIFY_ALL ( \
3279 FILE_NOTIFY_CHANGE_FILE_NAME | \
3280 FILE_NOTIFY_CHANGE_DIR_NAME | \
3281 FILE_NOTIFY_CHANGE_ATTRIBUTES | \
3282 FILE_NOTIFY_CHANGE_SIZE | \
3283 FILE_NOTIFY_CHANGE_LAST_WRITE | \
3284 FILE_NOTIFY_CHANGE_LAST_ACCESS | \
3285 FILE_NOTIFY_CHANGE_CREATION | \
3286 FILE_NOTIFY_CHANGE_SECURITY )
3287
3288 /******************************************************************************
3289 * NtNotifyChangeDirectoryFile [NTDLL.@]
3290 */
3291 NTSTATUS WINAPI
3292 NtNotifyChangeDirectoryFile( HANDLE FileHandle, HANDLE Event,
3293 PIO_APC_ROUTINE ApcRoutine, PVOID ApcContext,
3294 PIO_STATUS_BLOCK IoStatusBlock, PVOID Buffer,
3295 ULONG BufferSize, ULONG CompletionFilter, BOOLEAN WatchTree )
3296 {
3297 struct read_changes_info *info;
3298 NTSTATUS status;
3299 ULONG_PTR cvalue = ApcRoutine ? 0 : (ULONG_PTR)ApcContext;
3300
3301 TRACE("%p %p %p %p %p %p %u %u %d\n",
3302 FileHandle, Event, ApcRoutine, ApcContext, IoStatusBlock,
3303 Buffer, BufferSize, CompletionFilter, WatchTree );
3304
3305 if (!IoStatusBlock)
3306 return STATUS_ACCESS_VIOLATION;
3307
3308 if (CompletionFilter == 0 || (CompletionFilter & ~FILE_NOTIFY_ALL))
3309 return STATUS_INVALID_PARAMETER;
3310
3311 info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof *info );
3312 if (!info)
3313 return STATUS_NO_MEMORY;
3314
3315 info->FileHandle = FileHandle;
3316 info->Buffer = Buffer;
3317 info->BufferSize = BufferSize;
3318 info->apc = ApcRoutine;
3319 info->apc_arg = ApcContext;
3320
3321 SERVER_START_REQ( read_directory_changes )
3322 {
3323 req->filter = CompletionFilter;
3324 req->want_data = (Buffer != NULL);
3325 req->subtree = WatchTree;
3326 req->async.handle = wine_server_obj_handle( FileHandle );
3327 req->async.callback = wine_server_client_ptr( read_changes_apc );
3328 req->async.iosb = wine_server_client_ptr( IoStatusBlock );
3329 req->async.arg = wine_server_client_ptr( info );
3330 req->async.event = wine_server_obj_handle( Event );
3331 req->async.cvalue = cvalue;
3332 status = wine_server_call( req );
3333 }
3334 SERVER_END_REQ;
3335
3336 if (status != STATUS_PENDING)
3337 RtlFreeHeap( GetProcessHeap(), 0, info );
3338
3339 return status;
3340 }
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