?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
loader: Use plain binary name of git-describe to avoid junk in version output.
[wine.git] / dlls / ntdll / directory.c
blobd2c0d16adce8703cc34fe1eebea6bcf97714fac8
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 <sys/types.h>
27 #include <dirent.h>
28 #include <errno.h>
29 #include <fcntl.h>
30 #include <stdarg.h>
31 #include <string.h>
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <limits.h>
35 #ifdef HAVE_MNTENT_H
36 #include <mntent.h>
37 #endif
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_IOCTL_H
42 #include <sys/ioctl.h>
43 #endif
44 #ifdef HAVE_LINUX_IOCTL_H
45 #include <linux/ioctl.h>
46 #endif
47 #ifdef HAVE_LINUX_MAJOR_H
48 # include <linux/major.h>
49 #endif
50 #ifdef HAVE_SYS_PARAM_H
51 #include <sys/param.h>
52 #endif
53 #ifdef HAVE_SYS_MOUNT_H
54 #include <sys/mount.h>
55 #endif
56 #include <time.h>
57 #ifdef HAVE_UNISTD_H
58 # include <unistd.h>
59 #endif
60
61 #define NONAMELESSUNION
62 #define NONAMELESSSTRUCT
63 #include "ntstatus.h"
64 #define WIN32_NO_STATUS
65 #include "windef.h"
66 #include "winnt.h"
67 #include "thread.h"
68 #include "winternl.h"
69 #include "ntdll_misc.h"
70 #include "wine/unicode.h"
71 #include "wine/server.h"
72 #include "wine/library.h"
73 #include "wine/debug.h"
74
75 WINE_DEFAULT_DEBUG_CHANNEL(file);
76
77 /* just in case... */
78 #undef VFAT_IOCTL_READDIR_BOTH
79 #undef USE_GETDENTS
80
81 #ifdef linux
82
83 /* We want the real kernel dirent structure, not the libc one */
84 typedef struct
85 {
86 long d_ino;
87 long d_off;
88 unsigned short d_reclen;
89 char d_name[256];
90 } KERNEL_DIRENT;
91
92 /* Define the VFAT ioctl to get both short and long file names */
93 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
94
95 #ifndef O_DIRECTORY
96 # define O_DIRECTORY 0200000 /* must be directory */
97 #endif
98
99 #ifdef __i386__
100
101 typedef struct
102 {
103 ULONG64 d_ino;
104 LONG64 d_off;
105 unsigned short d_reclen;
106 unsigned char d_type;
107 char d_name[256];
108 } KERNEL_DIRENT64;
109
110 static inline int getdents64( int fd, KERNEL_DIRENT64 *de, unsigned int size )
111 {
112 int ret;
113 __asm__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
114 : "=a" (ret)
115 : "0" (220 /*NR_getdents64*/), "r" (fd), "c" (de), "d" (size)
116 : "memory" );
117 if (ret < 0)
118 {
119 errno = -ret;
120 ret = -1;
121 }
122 return ret;
123 }
124 #define USE_GETDENTS
125
126 #endif /* i386 */
127
128 #endif /* linux */
129
130 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
131 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
132
133 #define INVALID_NT_CHARS '*','?','<','>','|','"'
134 #define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
135
136 #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
137
138 static int show_dot_files = -1;
139
140 /* at some point we may want to allow Winelib apps to set this */
141 static const int is_case_sensitive = FALSE;
142
143 static RTL_CRITICAL_SECTION dir_section;
144 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
145 {
146 0, 0, &dir_section,
147 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
148 0, 0, { (DWORD_PTR)(__FILE__ ": dir_section") }
149 };
150 static RTL_CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
151
152
153 /* check if a given Unicode char is OK in a DOS short name */
154 static inline BOOL is_invalid_dos_char( WCHAR ch )
155 {
156 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
157 if (ch > 0x7f) return TRUE;
158 return strchrW( invalid_chars, ch ) != NULL;
159 }
160
161 /* check if the device can be a mounted volume */
162 static inline int is_valid_mounted_device( struct stat *st )
163 {
164 #if defined(linux) || defined(__sun__)
165 return S_ISBLK( st->st_mode );
166 #else
167 /* disks are char devices on *BSD */
168 return S_ISCHR( st->st_mode );
169 #endif
170 }
171
172 /***********************************************************************
173 * get_default_com_device
174 *
175 * Return the default device to use for serial ports.
176 */
177 static char *get_default_com_device( int num )
178 {
179 char *ret = NULL;
180
181 if (!num || num > 9) return ret;
182 #ifdef linux
183 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
184 if (ret)
185 {
186 strcpy( ret, "/dev/ttyS0" );
187 ret[strlen(ret) - 1] = '0' + num - 1;
188 }
189 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
190 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/cuad0") );
191 if (ret)
192 {
193 strcpy( ret, "/dev/cuad0" );
194 ret[strlen(ret) - 1] = '0' + num - 1;
195 }
196 #else
197 FIXME( "no known default for device com%d\n", num );
198 #endif
199 return ret;
200 }
201
202
203 /***********************************************************************
204 * get_default_lpt_device
205 *
206 * Return the default device to use for parallel ports.
207 */
208 static char *get_default_lpt_device( int num )
209 {
210 char *ret = NULL;
211
212 if (!num || num > 9) return ret;
213 #ifdef linux
214 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
215 if (ret)
216 {
217 strcpy( ret, "/dev/lp0" );
218 ret[strlen(ret) - 1] = '0' + num - 1;
219 }
220 #else
221 FIXME( "no known default for device lpt%d\n", num );
222 #endif
223 return ret;
224 }
225
226
227 /***********************************************************************
228 * parse_mount_entries
229 *
230 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
231 */
232
233 #ifdef sun
234 #include <sys/vfstab.h>
235 static char *parse_vfstab_entries( FILE *f, dev_t dev, ino_t ino)
236 {
237
238 struct vfstab vfs_entry;
239 struct vfstab *entry=&vfs_entry;
240 struct stat st;
241 char *device;
242
243 while (! getvfsent( f, entry ))
244 {
245 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
246 if (!strcmp( entry->vfs_fstype, "nfs" ) ||
247 !strcmp( entry->vfs_fstype, "smbfs" ) ||
248 !strcmp( entry->vfs_fstype, "ncpfs" )) continue;
249
250 if (stat( entry->vfs_mountp, &st ) == -1) continue;
251 if (st.st_dev != dev || st.st_ino != ino) continue;
252 if (!strcmp( entry->vfs_fstype, "fd" ))
253 {
254 if ((device = strstr( entry->vfs_mntopts, "dev=" )))
255 {
256 char *p = strchr( device + 4, ',' );
257 if (p) *p = 0;
258 return device + 4;
259 }
260 }
261 else
262 return entry->vfs_special;
263 }
264 return NULL;
265 }
266 #endif
267
268 #ifdef linux
269 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
270 {
271 struct mntent *entry;
272 struct stat st;
273 char *device;
274
275 while ((entry = getmntent( f )))
276 {
277 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
278 if (!strcmp( entry->mnt_type, "nfs" ) ||
279 !strcmp( entry->mnt_type, "smbfs" ) ||
280 !strcmp( entry->mnt_type, "ncpfs" )) continue;
281
282 if (stat( entry->mnt_dir, &st ) == -1) continue;
283 if (st.st_dev != dev || st.st_ino != ino) continue;
284 if (!strcmp( entry->mnt_type, "supermount" ))
285 {
286 if ((device = strstr( entry->mnt_opts, "dev=" )))
287 {
288 char *p = strchr( device + 4, ',' );
289 if (p) *p = 0;
290 return device + 4;
291 }
292 }
293 else if (!stat( entry->mnt_fsname, &st ) && S_ISREG(st.st_mode))
294 {
295 /* if device is a regular file check for a loop mount */
296 if ((device = strstr( entry->mnt_opts, "loop=" )))
297 {
298 char *p = strchr( device + 5, ',' );
299 if (p) *p = 0;
300 return device + 5;
301 }
302 }
303 else
304 return entry->mnt_fsname;
305 }
306 return NULL;
307 }
308 #endif
309
310 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
311 #include <fstab.h>
312 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
313 {
314 struct fstab *entry;
315 struct stat st;
316
317 while ((entry = getfsent()))
318 {
319 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
320 if (!strcmp( entry->fs_vfstype, "nfs" ) ||
321 !strcmp( entry->fs_vfstype, "smbfs" ) ||
322 !strcmp( entry->fs_vfstype, "ncpfs" )) continue;
323
324 if (stat( entry->fs_file, &st ) == -1) continue;
325 if (st.st_dev != dev || st.st_ino != ino) continue;
326 return entry->fs_spec;
327 }
328 return NULL;
329 }
330 #endif
331
332 #ifdef sun
333 #include <sys/mnttab.h>
334 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
335 {
336
337 volatile struct mnttab mntentry;
338 struct mnttab *entry=&mntentry;
339 struct stat st;
340 char *device;
341
342
343 while (( ! getmntent( f , entry) ))
344 {
345 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
346 if (!strcmp( entry->mnt_fstype, "nfs" ) ||
347 !strcmp( entry->mnt_fstype, "smbfs" ) ||
348 !strcmp( entry->mnt_fstype, "ncpfs" )) continue;
349
350 if (stat( entry->mnt_mountp, &st ) == -1) continue;
351 if (st.st_dev != dev || st.st_ino != ino) continue;
352 if (!strcmp( entry->mnt_fstype, "fd" ))
353 {
354 if ((device = strstr( entry->mnt_mntopts, "dev=" )))
355 {
356 char *p = strchr( device + 4, ',' );
357 if (p) *p = 0;
358 return device + 4;
359 }
360 }
361 else
362 return entry->mnt_special;
363 }
364 return NULL;
365 }
366 #endif
367
368 /***********************************************************************
369 * get_default_drive_device
370 *
371 * Return the default device to use for a given drive mount point.
372 */
373 static char *get_default_drive_device( const char *root )
374 {
375 char *ret = NULL;
376
377 #ifdef linux
378 FILE *f;
379 char *device = NULL;
380 int fd, res = -1;
381 struct stat st;
382
383 /* try to open it first to force it to get mounted */
384 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
385 {
386 res = fstat( fd, &st );
387 close( fd );
388 }
389 /* now try normal stat just in case */
390 if (res == -1) res = stat( root, &st );
391 if (res == -1) return NULL;
392
393 RtlEnterCriticalSection( &dir_section );
394
395 if ((f = fopen( "/etc/mtab", "r" )))
396 {
397 device = parse_mount_entries( f, st.st_dev, st.st_ino );
398 endmntent( f );
399 }
400 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
401 if (!device && (f = fopen( "/etc/fstab", "r" )))
402 {
403 device = parse_mount_entries( f, st.st_dev, st.st_ino );
404 endmntent( f );
405 }
406 if (device)
407 {
408 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
409 if (ret) strcpy( ret, device );
410 }
411 RtlLeaveCriticalSection( &dir_section );
412
413 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__ )
414 char *device = NULL;
415 int fd, res = -1;
416 struct stat st;
417
418 /* try to open it first to force it to get mounted */
419 if ((fd = open( root, O_RDONLY )) != -1)
420 {
421 res = fstat( fd, &st );
422 close( fd );
423 }
424 /* now try normal stat just in case */
425 if (res == -1) res = stat( root, &st );
426 if (res == -1) return NULL;
427
428 RtlEnterCriticalSection( &dir_section );
429
430 /* The FreeBSD parse_mount_entries doesn't require a file argument, so just
431 * pass NULL. Leave the argument in for symmetry.
432 */
433 device = parse_mount_entries( NULL, st.st_dev, st.st_ino );
434 if (device)
435 {
436 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
437 if (ret) strcpy( ret, device );
438 }
439 RtlLeaveCriticalSection( &dir_section );
440
441 #elif defined( sun )
442 FILE *f;
443 char *device = NULL;
444 int fd, res = -1;
445 struct stat st;
446
447 /* try to open it first to force it to get mounted */
448 if ((fd = open( root, O_RDONLY )) != -1)
449 {
450 res = fstat( fd, &st );
451 close( fd );
452 }
453 /* now try normal stat just in case */
454 if (res == -1) res = stat( root, &st );
455 if (res == -1) return NULL;
456
457 RtlEnterCriticalSection( &dir_section );
458
459 if ((f = fopen( "/etc/mnttab", "r" )))
460 {
461 device = parse_mount_entries( f, st.st_dev, st.st_ino);
462 fclose( f );
463 }
464 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
465 if (!device && (f = fopen( "/etc/vfstab", "r" )))
466 {
467 device = parse_vfstab_entries( f, st.st_dev, st.st_ino );
468 fclose( f );
469 }
470 if (device)
471 {
472 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
473 if (ret) strcpy( ret, device );
474 }
475 RtlLeaveCriticalSection( &dir_section );
476
477 #elif defined(__APPLE__)
478 struct statfs *mntStat;
479 struct stat st;
480 int i;
481 int mntSize;
482 dev_t dev;
483 ino_t ino;
484 static const char path_bsd_device[] = "/dev/disk";
485 int res;
486
487 res = stat( root, &st );
488 if (res == -1) return NULL;
489
490 dev = st.st_dev;
491 ino = st.st_ino;
492
493 RtlEnterCriticalSection( &dir_section );
494
495 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
496
497 for (i = 0; i < mntSize && !ret; i++)
498 {
499 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
500 if (st.st_dev != dev || st.st_ino != ino) continue;
501
502 /* FIXME add support for mounted network drive */
503 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
504 {
505 /* set return value to the corresponding raw BSD node */
506 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
507 if (ret)
508 {
509 strcpy(ret, "/dev/r");
510 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
511 }
512 }
513 }
514 RtlLeaveCriticalSection( &dir_section );
515 #else
516 static int warned;
517 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
518 #endif
519 return ret;
520 }
521
522
523 /***********************************************************************
524 * get_device_mount_point
525 *
526 * Return the current mount point for a device.
527 */
528 static char *get_device_mount_point( dev_t dev )
529 {
530 char *ret = NULL;
531
532 #ifdef linux
533 FILE *f;
534
535 RtlEnterCriticalSection( &dir_section );
536
537 if ((f = fopen( "/etc/mtab", "r" )))
538 {
539 struct mntent *entry;
540 struct stat st;
541 char *p, *device;
542
543 while ((entry = getmntent( f )))
544 {
545 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
546 if (!strcmp( entry->mnt_type, "nfs" ) ||
547 !strcmp( entry->mnt_type, "smbfs" ) ||
548 !strcmp( entry->mnt_type, "ncpfs" )) continue;
549
550 if (!strcmp( entry->mnt_type, "supermount" ))
551 {
552 if ((device = strstr( entry->mnt_opts, "dev=" )))
553 {
554 device += 4;
555 if ((p = strchr( device, ',' ))) *p = 0;
556 }
557 }
558 else if (!stat( entry->mnt_fsname, &st ) && S_ISREG(st.st_mode))
559 {
560 /* if device is a regular file check for a loop mount */
561 if ((device = strstr( entry->mnt_opts, "loop=" )))
562 {
563 device += 5;
564 if ((p = strchr( device, ',' ))) *p = 0;
565 }
566 }
567 else device = entry->mnt_fsname;
568
569 if (device && !stat( device, &st ) && S_ISBLK(st.st_mode) && st.st_rdev == dev)
570 {
571 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry->mnt_dir) + 1 );
572 if (ret) strcpy( ret, entry->mnt_dir );
573 break;
574 }
575 }
576 endmntent( f );
577 }
578 RtlLeaveCriticalSection( &dir_section );
579 #elif defined(__APPLE__)
580 struct statfs *entry;
581 struct stat st;
582 int i, size;
583
584 RtlEnterCriticalSection( &dir_section );
585
586 size = getmntinfo( &entry, MNT_NOWAIT );
587 for (i = 0; i < size; i++)
588 {
589 if (stat( entry[i].f_mntfromname, &st ) == -1) continue;
590 if (S_ISBLK(st.st_mode) && st.st_rdev == dev)
591 {
592 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry[i].f_mntfromname) + 1 );
593 if (ret) strcpy( ret, entry[i].f_mntfromname );
594 break;
595 }
596 }
597 RtlLeaveCriticalSection( &dir_section );
598 #else
599 static int warned;
600 if (!warned++) FIXME( "unmounting devices not supported on this platform\n" );
601 #endif
602 return ret;
603 }
604
605
606 /***********************************************************************
607 * init_options
608 *
609 * Initialize the show_dot_files options.
610 */
611 static void init_options(void)
612 {
613 static const WCHAR WineW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e',0};
614 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
615 char tmp[80];
616 HANDLE root, hkey;
617 DWORD dummy;
618 OBJECT_ATTRIBUTES attr;
619 UNICODE_STRING nameW;
620
621 show_dot_files = 0;
622
623 RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
624 attr.Length = sizeof(attr);
625 attr.RootDirectory = root;
626 attr.ObjectName = &nameW;
627 attr.Attributes = 0;
628 attr.SecurityDescriptor = NULL;
629 attr.SecurityQualityOfService = NULL;
630 RtlInitUnicodeString( &nameW, WineW );
631
632 /* @@ Wine registry key: HKCU\Software\Wine */
633 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
634 {
635 RtlInitUnicodeString( &nameW, ShowDotFilesW );
636 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
637 {
638 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
639 show_dot_files = IS_OPTION_TRUE( str[0] );
640 }
641 NtClose( hkey );
642 }
643 NtClose( root );
644 }
645
646
647 /***********************************************************************
648 * DIR_is_hidden_file
649 *
650 * Check if the specified file should be hidden based on its name and the show dot files option.
651 */
652 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
653 {
654 WCHAR *p, *end;
655
656 if (show_dot_files == -1) init_options();
657 if (show_dot_files) return FALSE;
658
659 end = p = name->Buffer + name->Length/sizeof(WCHAR);
660 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
661 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
662 if (p == end || *p != '.') return FALSE;
663 /* make sure it isn't '.' or '..' */
664 if (p + 1 == end) return FALSE;
665 if (p[1] == '.' && p + 2 == end) return FALSE;
666 return TRUE;
667 }
668
669
670 /***********************************************************************
671 * hash_short_file_name
672 *
673 * Transform a Unix file name into a hashed DOS name. If the name is a valid
674 * DOS name, it is converted to upper-case; otherwise it is replaced by a
675 * hashed version that fits in 8.3 format.
676 * 'buffer' must be at least 12 characters long.
677 * Returns length of short name in bytes; short name is NOT null-terminated.
678 */
679 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
680 {
681 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
682
683 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
684 LPWSTR dst;
685 unsigned short hash;
686 int i;
687
688 /* Compute the hash code of the file name */
689 /* If you know something about hash functions, feel free to */
690 /* insert a better algorithm here... */
691 if (!is_case_sensitive)
692 {
693 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
694 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
695 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
696 }
697 else
698 {
699 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
700 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
701 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
702 }
703
704 /* Find last dot for start of the extension */
705 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
706
707 /* Copy first 4 chars, replacing invalid chars with '_' */
708 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
709 {
710 if (p == end || p == ext) break;
711 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
712 }
713 /* Pad to 5 chars with '~' */
714 while (i-- >= 0) *dst++ = '~';
715
716 /* Insert hash code converted to 3 ASCII chars */
717 *dst++ = hash_chars[(hash >> 10) & 0x1f];
718 *dst++ = hash_chars[(hash >> 5) & 0x1f];
719 *dst++ = hash_chars[hash & 0x1f];
720
721 /* Copy the first 3 chars of the extension (if any) */
722 if (ext)
723 {
724 *dst++ = '.';
725 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
726 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
727 }
728 return dst - buffer;
729 }
730
731
732 /***********************************************************************
733 * match_filename
734 *
735 * Check a long file name against a mask.
736 *
737 * Tests (done in W95 DOS shell - case insensitive):
738 * *.txt test1.test.txt *
739 * *st1* test1.txt *
740 * *.t??????.t* test1.ta.tornado.txt *
741 * *tornado* test1.ta.tornado.txt *
742 * t*t test1.ta.tornado.txt *
743 * ?est* test1.txt *
744 * ?est??? test1.txt -
745 * *test1.txt* test1.txt *
746 * h?l?o*t.dat hellothisisatest.dat *
747 */
748 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
749 {
750 int mismatch;
751 const WCHAR *name = name_str->Buffer;
752 const WCHAR *mask = mask_str->Buffer;
753 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
754 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
755 const WCHAR *lastjoker = NULL;
756 const WCHAR *next_to_retry = NULL;
757
758 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
759
760 while (name < name_end && mask < mask_end)
761 {
762 switch(*mask)
763 {
764 case '*':
765 mask++;
766 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
767 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
768 lastjoker = mask;
769
770 /* skip to the next match after the joker(s) */
771 if (is_case_sensitive)
772 while (name < name_end && (*name != *mask)) name++;
773 else
774 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
775 next_to_retry = name;
776 break;
777 case '?':
778 mask++;
779 name++;
780 break;
781 default:
782 if (is_case_sensitive) mismatch = (*mask != *name);
783 else mismatch = (toupperW(*mask) != toupperW(*name));
784
785 if (!mismatch)
786 {
787 mask++;
788 name++;
789 if (mask == mask_end)
790 {
791 if (name == name_end) return TRUE;
792 if (lastjoker) mask = lastjoker;
793 }
794 }
795 else /* mismatch ! */
796 {
797 if (lastjoker) /* we had an '*', so we can try unlimitedly */
798 {
799 mask = lastjoker;
800
801 /* this scan sequence was a mismatch, so restart
802 * 1 char after the first char we checked last time */
803 next_to_retry++;
804 name = next_to_retry;
805 }
806 else return FALSE; /* bad luck */
807 }
808 break;
809 }
810 }
811 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
812 mask++; /* Ignore trailing '.' or '*' in mask */
813 return (name == name_end && mask == mask_end);
814 }
815
816
817 /***********************************************************************
818 * append_entry
819 *
820 * helper for NtQueryDirectoryFile
821 */
822 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG_PTR *pos, ULONG max_length,
823 const char *long_name, const char *short_name,
824 const UNICODE_STRING *mask )
825 {
826 FILE_BOTH_DIR_INFORMATION *info;
827 int i, long_len, short_len, total_len;
828 struct stat st;
829 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
830 WCHAR short_nameW[12];
831 UNICODE_STRING str;
832
833 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
834 if (long_len == -1) return NULL;
835
836 str.Buffer = long_nameW;
837 str.Length = long_len * sizeof(WCHAR);
838 str.MaximumLength = sizeof(long_nameW);
839
840 if (short_name)
841 {
842 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
843 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
844 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
845 }
846 else /* generate a short name if necessary */
847 {
848 BOOLEAN spaces;
849
850 short_len = 0;
851 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
852 short_len = hash_short_file_name( &str, short_nameW );
853 }
854
855 TRACE( "long %s short %s mask %s\n",
856 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
857
858 if (mask && !match_filename( &str, mask ))
859 {
860 if (!short_len) return NULL; /* no short name to match */
861 str.Buffer = short_nameW;
862 str.Length = short_len * sizeof(WCHAR);
863 str.MaximumLength = sizeof(short_nameW);
864 if (!match_filename( &str, mask )) return NULL;
865 }
866
867 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
868 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
869
870 if (*pos + total_len > max_length) total_len = max_length - *pos;
871
872 info->FileAttributes = 0;
873 if (lstat( long_name, &st ) == -1) return NULL;
874 if (S_ISLNK( st.st_mode ))
875 {
876 if (stat( long_name, &st ) == -1) return NULL;
877 if (S_ISDIR( st.st_mode )) info->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
878 }
879
880 info->NextEntryOffset = total_len;
881 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
882
883 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
884 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
885 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
886 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
887
888 if (S_ISDIR(st.st_mode))
889 {
890 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
891 info->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
892 }
893 else
894 {
895 info->EndOfFile.QuadPart = st.st_size;
896 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
897 info->FileAttributes |= FILE_ATTRIBUTE_ARCHIVE;
898 }
899
900 if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
901 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
902
903 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
904 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
905
906 info->EaSize = 0; /* FIXME */
907 info->ShortNameLength = short_len * sizeof(WCHAR);
908 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
909 info->FileNameLength = long_len * sizeof(WCHAR);
910 memcpy( info->FileName, long_nameW,
911 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
912
913 *pos += total_len;
914 return info;
915 }
916
917
918 #ifdef VFAT_IOCTL_READDIR_BOTH
919
920 /***********************************************************************
921 * start_vfat_ioctl
922 *
923 * Wrapper for the VFAT ioctl to work around various kernel bugs.
924 * dir_section must be held by caller.
925 */
926 static KERNEL_DIRENT *start_vfat_ioctl( int fd )
927 {
928 static KERNEL_DIRENT *de;
929 int res;
930
931 if (!de)
932 {
933 const size_t page_size = getpagesize();
934 SIZE_T size = 2 * sizeof(*de) + page_size;
935 void *addr = NULL;
936
937 if (NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_RESERVE, PAGE_READWRITE ))
938 return NULL;
939 /* commit only the size needed for the dir entries */
940 /* this leaves an extra unaccessible page, which should make the kernel */
941 /* fail with -EFAULT before it stomps all over our memory */
942 de = addr;
943 size = 2 * sizeof(*de);
944 NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_COMMIT, PAGE_READWRITE );
945 }
946
947 /* set d_reclen to 65535 to work around an AFS kernel bug */
948 de[0].d_reclen = 65535;
949 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
950 if (res == -1)
951 {
952 if (errno != ENOENT) return NULL; /* VFAT ioctl probably not supported */
953 de[0].d_reclen = 0; /* eof */
954 }
955 else if (!res && de[0].d_reclen == 65535) return NULL; /* AFS bug */
956
957 return de;
958 }
959
960
961 /***********************************************************************
962 * read_directory_vfat
963 *
964 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
965 */
966 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
967 BOOLEAN single_entry, const UNICODE_STRING *mask,
968 BOOLEAN restart_scan )
969
970 {
971 size_t len;
972 KERNEL_DIRENT *de;
973 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
974 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
975
976 io->u.Status = STATUS_SUCCESS;
977
978 if (restart_scan) lseek( fd, 0, SEEK_SET );
979
980 if (length < max_dir_info_size) /* we may have to return a partial entry here */
981 {
982 off_t old_pos = lseek( fd, 0, SEEK_CUR );
983
984 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
985
986 while (de[0].d_reclen)
987 {
988 /* make sure names are null-terminated to work around an x86-64 kernel bug */
989 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
990 de[0].d_name[len] = 0;
991 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
992 de[1].d_name[len] = 0;
993
994 if (de[1].d_name[0])
995 info = append_entry( buffer, &io->Information, length,
996 de[1].d_name, de[0].d_name, mask );
997 else
998 info = append_entry( buffer, &io->Information, length,
999 de[0].d_name, NULL, mask );
1000 if (info)
1001 {
1002 last_info = info;
1003 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1004 {
1005 io->u.Status = STATUS_BUFFER_OVERFLOW;
1006 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1007 }
1008 break;
1009 }
1010 old_pos = lseek( fd, 0, SEEK_CUR );
1011 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1012 }
1013 }
1014 else /* we'll only return full entries, no need to worry about overflow */
1015 {
1016 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
1017
1018 while (de[0].d_reclen)
1019 {
1020 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1021 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1022 de[0].d_name[len] = 0;
1023 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1024 de[1].d_name[len] = 0;
1025
1026 if (de[1].d_name[0])
1027 info = append_entry( buffer, &io->Information, length,
1028 de[1].d_name, de[0].d_name, mask );
1029 else
1030 info = append_entry( buffer, &io->Information, length,
1031 de[0].d_name, NULL, mask );
1032 if (info)
1033 {
1034 last_info = info;
1035 if (single_entry) break;
1036 /* check if we still have enough space for the largest possible entry */
1037 if (io->Information + max_dir_info_size > length) break;
1038 }
1039 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1040 }
1041 }
1042
1043 if (last_info) last_info->NextEntryOffset = 0;
1044 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1045 return 0;
1046 }
1047 #endif /* VFAT_IOCTL_READDIR_BOTH */
1048
1049
1050 /***********************************************************************
1051 * read_directory_getdents
1052 *
1053 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
1054 */
1055 #ifdef USE_GETDENTS
1056 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1057 BOOLEAN single_entry, const UNICODE_STRING *mask,
1058 BOOLEAN restart_scan )
1059 {
1060 off_t old_pos = 0;
1061 size_t size = length;
1062 int res;
1063 char local_buffer[8192];
1064 KERNEL_DIRENT64 *data, *de;
1065 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
1066 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
1067
1068 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1069 {
1070 size = sizeof(local_buffer);
1071 data = (KERNEL_DIRENT64 *)local_buffer;
1072 }
1073
1074 if (restart_scan) lseek( fd, 0, SEEK_SET );
1075 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
1076 {
1077 old_pos = lseek( fd, 0, SEEK_CUR );
1078 if (old_pos == -1 && errno == ENOENT)
1079 {
1080 io->u.Status = STATUS_NO_MORE_FILES;
1081 res = 0;
1082 goto done;
1083 }
1084 }
1085
1086 io->u.Status = STATUS_SUCCESS;
1087
1088 res = getdents64( fd, data, size );
1089 if (res == -1)
1090 {
1091 if (errno != ENOSYS)
1092 {
1093 io->u.Status = FILE_GetNtStatus();
1094 res = 0;
1095 }
1096 goto done;
1097 }
1098
1099 de = data;
1100
1101 while (res > 0)
1102 {
1103 res -= de->d_reclen;
1104 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
1105 if (info)
1106 {
1107 last_info = info;
1108 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1109 {
1110 io->u.Status = STATUS_BUFFER_OVERFLOW;
1111 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1112 break;
1113 }
1114 /* check if we still have enough space for the largest possible entry */
1115 if (single_entry || io->Information + max_dir_info_size > length)
1116 {
1117 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
1118 break;
1119 }
1120 }
1121 old_pos = de->d_off;
1122 /* move on to the next entry */
1123 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
1124 else
1125 {
1126 res = getdents64( fd, data, size );
1127 de = data;
1128 }
1129 }
1130
1131 if (last_info) last_info->NextEntryOffset = 0;
1132 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1133 res = 0;
1134 done:
1135 if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
1136 return res;
1137 }
1138 #endif /* USE_GETDENTS */
1139
1140
1141 /***********************************************************************
1142 * read_directory_readdir
1143 *
1144 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
1145 */
1146 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1147 BOOLEAN single_entry, const UNICODE_STRING *mask,
1148 BOOLEAN restart_scan )
1149 {
1150 DIR *dir;
1151 off_t i, old_pos = 0;
1152 struct dirent *de;
1153 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
1154 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
1155
1156 if (!(dir = opendir( "." )))
1157 {
1158 io->u.Status = FILE_GetNtStatus();
1159 return;
1160 }
1161
1162 if (!restart_scan)
1163 {
1164 old_pos = lseek( fd, 0, SEEK_CUR );
1165 /* skip the right number of entries */
1166 for (i = 0; i < old_pos; i++)
1167 {
1168 if (!readdir( dir ))
1169 {
1170 closedir( dir );
1171 io->u.Status = STATUS_NO_MORE_FILES;
1172 return;
1173 }
1174 }
1175 }
1176 io->u.Status = STATUS_SUCCESS;
1177
1178 while ((de = readdir( dir )))
1179 {
1180 old_pos++;
1181 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
1182 if (info)
1183 {
1184 last_info = info;
1185 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1186 {
1187 io->u.Status = STATUS_BUFFER_OVERFLOW;
1188 old_pos--; /* restore pos to previous entry */
1189 break;
1190 }
1191 if (single_entry) break;
1192 /* check if we still have enough space for the largest possible entry */
1193 if (io->Information + max_dir_info_size > length) break;
1194 }
1195 }
1196
1197 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
1198 closedir( dir );
1199
1200 if (last_info) last_info->NextEntryOffset = 0;
1201 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1202 }
1203
1204 /***********************************************************************
1205 * read_directory_stat
1206 *
1207 * Read a single file from a directory by determining whether the file
1208 * identified by mask exists using stat.
1209 */
1210 static int read_directory_stat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1211 BOOLEAN single_entry, const UNICODE_STRING *mask,
1212 BOOLEAN restart_scan )
1213 {
1214 int unix_len, ret, used_default;
1215 char *unix_name;
1216 struct stat st;
1217
1218 TRACE("trying optimisation for file %s\n", debugstr_us( mask ));
1219
1220 unix_len = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), NULL, 0, NULL, NULL );
1221 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len + 1)))
1222 {
1223 io->u.Status = STATUS_NO_MEMORY;
1224 return 0;
1225 }
1226 ret = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), unix_name, unix_len,
1227 NULL, &used_default );
1228 if (ret > 0 && !used_default)
1229 {
1230 unix_name[ret] = 0;
1231 if (restart_scan)
1232 {
1233 lseek( fd, 0, SEEK_SET );
1234 }
1235 else if (lseek( fd, 0, SEEK_CUR ) != 0)
1236 {
1237 io->u.Status = STATUS_NO_MORE_FILES;
1238 ret = 0;
1239 goto done;
1240 }
1241
1242 ret = stat( unix_name, &st );
1243 if (!ret)
1244 {
1245 FILE_BOTH_DIR_INFORMATION *info = append_entry( buffer, &io->Information, length, unix_name, NULL, mask );
1246 if (info)
1247 {
1248 info->NextEntryOffset = 0;
1249 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1250 io->u.Status = STATUS_BUFFER_OVERFLOW;
1251 else
1252 lseek( fd, 1, SEEK_CUR );
1253 }
1254 }
1255 }
1256 else ret = -1;
1257
1258 done:
1259 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1260
1261 TRACE("returning %d\n", ret);
1262
1263 return ret;
1264 }
1265
1266
1267 static inline WCHAR *mempbrkW( const WCHAR *ptr, const WCHAR *accept, size_t n )
1268 {
1269 const WCHAR *end;
1270 for (end = ptr + n; ptr < end; ptr++) if (strchrW( accept, *ptr )) return (WCHAR *)ptr;
1271 return NULL;
1272 }
1273
1274 /******************************************************************************
1275 * NtQueryDirectoryFile [NTDLL.@]
1276 * ZwQueryDirectoryFile [NTDLL.@]
1277 */
1278 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
1279 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
1280 PIO_STATUS_BLOCK io,
1281 PVOID buffer, ULONG length,
1282 FILE_INFORMATION_CLASS info_class,
1283 BOOLEAN single_entry,
1284 PUNICODE_STRING mask,
1285 BOOLEAN restart_scan )
1286 {
1287 int cwd, fd, needs_close;
1288 static const WCHAR wszWildcards[] = { '*','?',0 };
1289
1290 TRACE("(%p %p %p %p %p %p 0x%08x 0x%08x 0x%08x %s 0x%08x\n",
1291 handle, event, apc_routine, apc_context, io, buffer,
1292 length, info_class, single_entry, debugstr_us(mask),
1293 restart_scan);
1294
1295 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
1296
1297 if (event || apc_routine)
1298 {
1299 FIXME( "Unsupported yet option\n" );
1300 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1301 }
1302 if (info_class != FileBothDirectoryInformation)
1303 {
1304 FIXME( "Unsupported file info class %d\n", info_class );
1305 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1306 }
1307
1308 if ((io->u.Status = server_get_unix_fd( handle, FILE_LIST_DIRECTORY, &fd, &needs_close, NULL )) != STATUS_SUCCESS)
1309 return io->u.Status;
1310
1311 io->Information = 0;
1312
1313 RtlEnterCriticalSection( &dir_section );
1314
1315 if (show_dot_files == -1) init_options();
1316
1317 if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
1318 {
1319 if (mask && !mempbrkW( mask->Buffer, wszWildcards, mask->Length / sizeof(WCHAR) ) &&
1320 read_directory_stat( fd, io, buffer, length, single_entry, mask, restart_scan ) != -1)
1321 goto done;
1322 #ifdef VFAT_IOCTL_READDIR_BOTH
1323 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) != -1)
1324 goto done;
1325 #endif
1326 #ifdef USE_GETDENTS
1327 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) != -1)
1328 goto done;
1329 #endif
1330 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
1331
1332 done:
1333 if (fchdir( cwd ) == -1) chdir( "/" );
1334 }
1335 else io->u.Status = FILE_GetNtStatus();
1336
1337 RtlLeaveCriticalSection( &dir_section );
1338
1339 if (needs_close) close( fd );
1340 if (cwd != -1) close( cwd );
1341 TRACE( "=> %x (%ld)\n", io->u.Status, io->Information );
1342 return io->u.Status;
1343 }
1344
1345
1346 /***********************************************************************
1347 * find_file_in_dir
1348 *
1349 * Find a file in a directory the hard way, by doing a case-insensitive search.
1350 * The file found is appended to unix_name at pos.
1351 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
1352 */
1353 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
1354 int check_case )
1355 {
1356 WCHAR buffer[MAX_DIR_ENTRY_LEN];
1357 UNICODE_STRING str;
1358 BOOLEAN spaces;
1359 DIR *dir;
1360 struct dirent *de;
1361 struct stat st;
1362 int ret, used_default, is_name_8_dot_3;
1363
1364 /* try a shortcut for this directory */
1365
1366 unix_name[pos++] = '/';
1367 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
1368 NULL, &used_default );
1369 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
1370 /* so it cannot match the file we are looking for */
1371 if (ret >= 0 && !used_default)
1372 {
1373 unix_name[pos + ret] = 0;
1374 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
1375 }
1376 if (check_case) goto not_found; /* we want an exact match */
1377
1378 if (pos > 1) unix_name[pos - 1] = 0;
1379 else unix_name[1] = 0; /* keep the initial slash */
1380
1381 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
1382
1383 str.Buffer = (WCHAR *)name;
1384 str.Length = length * sizeof(WCHAR);
1385 str.MaximumLength = str.Length;
1386 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
1387
1388 /* now look for it through the directory */
1389
1390 #ifdef VFAT_IOCTL_READDIR_BOTH
1391 if (is_name_8_dot_3)
1392 {
1393 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
1394 if (fd != -1)
1395 {
1396 KERNEL_DIRENT *de;
1397
1398 RtlEnterCriticalSection( &dir_section );
1399 if ((de = start_vfat_ioctl( fd )))
1400 {
1401 unix_name[pos - 1] = '/';
1402 while (de[0].d_reclen)
1403 {
1404 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1405 size_t len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1406 de[0].d_name[len] = 0;
1407 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1408 de[1].d_name[len] = 0;
1409
1410 if (de[1].d_name[0])
1411 {
1412 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1413 buffer, MAX_DIR_ENTRY_LEN );
1414 if (ret == length && !memicmpW( buffer, name, length))
1415 {
1416 strcpy( unix_name + pos, de[1].d_name );
1417 RtlLeaveCriticalSection( &dir_section );
1418 close( fd );
1419 return STATUS_SUCCESS;
1420 }
1421 }
1422 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1423 buffer, MAX_DIR_ENTRY_LEN );
1424 if (ret == length && !memicmpW( buffer, name, length))
1425 {
1426 strcpy( unix_name + pos,
1427 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1428 RtlLeaveCriticalSection( &dir_section );
1429 close( fd );
1430 return STATUS_SUCCESS;
1431 }
1432 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1433 {
1434 RtlLeaveCriticalSection( &dir_section );
1435 close( fd );
1436 goto not_found;
1437 }
1438 }
1439 }
1440 RtlLeaveCriticalSection( &dir_section );
1441 close( fd );
1442 }
1443 /* fall through to normal handling */
1444 }
1445 #endif /* VFAT_IOCTL_READDIR_BOTH */
1446
1447 if (!(dir = opendir( unix_name )))
1448 {
1449 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1450 else return FILE_GetNtStatus();
1451 }
1452 unix_name[pos - 1] = '/';
1453 str.Buffer = buffer;
1454 str.MaximumLength = sizeof(buffer);
1455 while ((de = readdir( dir )))
1456 {
1457 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1458 if (ret == length && !memicmpW( buffer, name, length ))
1459 {
1460 strcpy( unix_name + pos, de->d_name );
1461 closedir( dir );
1462 return STATUS_SUCCESS;
1463 }
1464
1465 if (!is_name_8_dot_3) continue;
1466
1467 str.Length = ret * sizeof(WCHAR);
1468 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1469 {
1470 WCHAR short_nameW[12];
1471 ret = hash_short_file_name( &str, short_nameW );
1472 if (ret == length && !memicmpW( short_nameW, name, length ))
1473 {
1474 strcpy( unix_name + pos, de->d_name );
1475 closedir( dir );
1476 return STATUS_SUCCESS;
1477 }
1478 }
1479 }
1480 closedir( dir );
1481 goto not_found; /* avoid warning */
1482
1483 not_found:
1484 unix_name[pos - 1] = 0;
1485 return STATUS_OBJECT_PATH_NOT_FOUND;
1486 }
1487
1488
1489 /******************************************************************************
1490 * get_dos_device
1491 *
1492 * Get the Unix path of a DOS device.
1493 */
1494 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1495 {
1496 const char *config_dir = wine_get_config_dir();
1497 struct stat st;
1498 char *unix_name, *new_name, *dev;
1499 unsigned int i;
1500 int unix_len;
1501
1502 /* make sure the device name is ASCII */
1503 for (i = 0; i < name_len; i++)
1504 if (name[i] <= 32 || name[i] >= 127) return STATUS_BAD_DEVICE_TYPE;
1505
1506 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1507
1508 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1509 return STATUS_NO_MEMORY;
1510
1511 strcpy( unix_name, config_dir );
1512 strcat( unix_name, "/dosdevices/" );
1513 dev = unix_name + strlen(unix_name);
1514
1515 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1516 dev[i] = 0;
1517
1518 /* special case for drive devices */
1519 if (name_len == 2 && dev[1] == ':')
1520 {
1521 dev[i++] = ':';
1522 dev[i] = 0;
1523 }
1524
1525 for (;;)
1526 {
1527 if (!stat( unix_name, &st ))
1528 {
1529 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1530 unix_name_ret->Buffer = unix_name;
1531 unix_name_ret->Length = strlen(unix_name);
1532 unix_name_ret->MaximumLength = unix_len;
1533 return STATUS_SUCCESS;
1534 }
1535 if (!dev) break;
1536
1537 /* now try some defaults for it */
1538 if (!strcmp( dev, "aux" ))
1539 {
1540 strcpy( dev, "com1" );
1541 continue;
1542 }
1543 if (!strcmp( dev, "prn" ))
1544 {
1545 strcpy( dev, "lpt1" );
1546 continue;
1547 }
1548 if (!strcmp( dev, "nul" ))
1549 {
1550 strcpy( unix_name, "/dev/null" );
1551 dev = NULL; /* last try */
1552 continue;
1553 }
1554
1555 new_name = NULL;
1556 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1557 {
1558 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1559 new_name = get_default_drive_device( unix_name );
1560 }
1561 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1562 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1563
1564 if (!new_name) break;
1565
1566 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1567 unix_name = new_name;
1568 unix_len = strlen(unix_name) + 1;
1569 dev = NULL; /* last try */
1570 }
1571 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1572 return STATUS_BAD_DEVICE_TYPE;
1573 }
1574
1575
1576 /* return the length of the DOS namespace prefix if any */
1577 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1578 {
1579 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1580 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1581
1582 if (name->Length > sizeof(nt_prefixW) &&
1583 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1584 return sizeof(nt_prefixW) / sizeof(WCHAR);
1585
1586 if (name->Length > sizeof(dosdev_prefixW) &&
1587 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1588 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1589
1590 return 0;
1591 }
1592
1593
1594 /******************************************************************************
1595 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1596 *
1597 * Convert a file name from NT namespace to Unix namespace.
1598 *
1599 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1600 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1601 * returned, but the unix name is still filled in properly.
1602 */
1603 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1604 UINT disposition, BOOLEAN check_case )
1605 {
1606 static const WCHAR uncW[] = {'U','N','C','\\'};
1607 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1608
1609 NTSTATUS status = STATUS_SUCCESS;
1610 const char *config_dir = wine_get_config_dir();
1611 const WCHAR *name, *p;
1612 struct stat st;
1613 char *unix_name;
1614 int pos, ret, name_len, unix_len, used_default;
1615
1616 name = nameW->Buffer;
1617 name_len = nameW->Length / sizeof(WCHAR);
1618
1619 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1620
1621 if ((pos = get_dos_prefix_len( nameW )))
1622 {
1623 BOOLEAN is_unc = FALSE;
1624
1625 name += pos;
1626 name_len -= pos;
1627
1628 /* check for UNC prefix */
1629 if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1630 {
1631 name += 3;
1632 name_len -= 3;
1633 is_unc = TRUE;
1634 }
1635 else
1636 {
1637 /* check for a drive letter with path */
1638 if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1639 {
1640 /* not a drive with path, try other DOS devices */
1641 return get_dos_device( name, name_len, unix_name_ret );
1642 }
1643 name += 2; /* skip drive letter */
1644 name_len -= 2;
1645 }
1646
1647 /* check for invalid characters */
1648 for (p = name; p < name + name_len; p++)
1649 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1650
1651 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1652 unix_len += MAX_DIR_ENTRY_LEN + 3;
1653 unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1654 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1655 return STATUS_NO_MEMORY;
1656 strcpy( unix_name, config_dir );
1657 strcat( unix_name, "/dosdevices/" );
1658 pos = strlen(unix_name);
1659 if (is_unc)
1660 {
1661 strcpy( unix_name + pos, "unc" );
1662 pos += 3;
1663 }
1664 else
1665 {
1666 unix_name[pos++] = tolowerW( name[-2] );
1667 unix_name[pos++] = ':';
1668 unix_name[pos] = 0;
1669 }
1670 }
1671 else /* no DOS prefix, assume NT native name, map directly to Unix */
1672 {
1673 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1674 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1675 unix_len += MAX_DIR_ENTRY_LEN + 3;
1676 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1677 return STATUS_NO_MEMORY;
1678 pos = 0;
1679 }
1680
1681 /* try a shortcut first */
1682
1683 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1684 NULL, &used_default );
1685
1686 while (name_len && IS_SEPARATOR(*name))
1687 {
1688 name++;
1689 name_len--;
1690 }
1691
1692 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1693 {
1694 char *p;
1695 unix_name[pos + ret] = 0;
1696 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1697 if (!stat( unix_name, &st ))
1698 {
1699 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1700 if (disposition == FILE_CREATE)
1701 {
1702 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1703 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1704 }
1705 goto done;
1706 }
1707 }
1708
1709 if (!name_len) /* empty name -> drive root doesn't exist */
1710 {
1711 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1712 return STATUS_OBJECT_PATH_NOT_FOUND;
1713 }
1714 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1715 {
1716 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1717 return STATUS_OBJECT_NAME_NOT_FOUND;
1718 }
1719
1720 /* now do it component by component */
1721
1722 while (name_len)
1723 {
1724 const WCHAR *end, *next;
1725
1726 end = name;
1727 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1728 next = end;
1729 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1730 name_len -= next - name;
1731
1732 /* grow the buffer if needed */
1733
1734 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1735 {
1736 char *new_name;
1737 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1738 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1739 {
1740 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1741 return STATUS_NO_MEMORY;
1742 }
1743 unix_name = new_name;
1744 }
1745
1746 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1747
1748 /* if this is the last element, not finding it is not necessarily fatal */
1749 if (!name_len)
1750 {
1751 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1752 {
1753 status = STATUS_OBJECT_NAME_NOT_FOUND;
1754 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1755 {
1756 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1757 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1758 if (ret > 0 && !used_default)
1759 {
1760 unix_name[pos] = '/';
1761 unix_name[pos + 1 + ret] = 0;
1762 status = STATUS_NO_SUCH_FILE;
1763 break;
1764 }
1765 }
1766 }
1767 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1768 {
1769 status = STATUS_OBJECT_NAME_COLLISION;
1770 }
1771 }
1772
1773 if (status != STATUS_SUCCESS)
1774 {
1775 /* couldn't find it at all, fail */
1776 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1777 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1778 return status;
1779 }
1780
1781 pos += strlen( unix_name + pos );
1782 name = next;
1783 }
1784
1785 WARN( "%s -> %s required a case-insensitive search\n",
1786 debugstr_us(nameW), debugstr_a(unix_name) );
1787
1788 done:
1789 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1790 unix_name_ret->Buffer = unix_name;
1791 unix_name_ret->Length = strlen(unix_name);
1792 unix_name_ret->MaximumLength = unix_len;
1793 return status;
1794 }
1795
1796
1797 /******************************************************************
1798 * RtlDoesFileExists_U (NTDLL.@)
1799 */
1800 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1801 {
1802 UNICODE_STRING nt_name;
1803 ANSI_STRING unix_name;
1804 BOOLEAN ret;
1805
1806 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1807 ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1808 if (ret) RtlFreeAnsiString( &unix_name );
1809 RtlFreeUnicodeString( &nt_name );
1810 return ret;
1811 }
1812
1813
1814 /***********************************************************************
1815 * DIR_unmount_device
1816 *
1817 * Unmount the specified device.
1818 */
1819 NTSTATUS DIR_unmount_device( HANDLE handle )
1820 {
1821 NTSTATUS status;
1822 int unix_fd, needs_close;
1823
1824 SERVER_START_REQ( unmount_device )
1825 {
1826 req->handle = handle;
1827 status = wine_server_call( req );
1828 }
1829 SERVER_END_REQ;
1830 if (status) return status;
1831
1832 if (!(status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL )))
1833 {
1834 struct stat st;
1835 char *mount_point = NULL;
1836
1837 if (fstat( unix_fd, &st ) == -1 || !is_valid_mounted_device( &st ))
1838 status = STATUS_INVALID_PARAMETER;
1839 else
1840 {
1841 if ((mount_point = get_device_mount_point( st.st_rdev )))
1842 {
1843 #ifdef __APPLE__
1844 static const char umount[] = "diskutil unmount >/dev/null 2>&1 ";
1845 #else
1846 static const char umount[] = "umount >/dev/null 2>&1 ";
1847 #endif
1848 char *cmd = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mount_point)+sizeof(umount));
1849 if (cmd)
1850 {
1851 strcpy( cmd, umount );
1852 strcat( cmd, mount_point );
1853 system( cmd );
1854 RtlFreeHeap( GetProcessHeap(), 0, cmd );
1855 #ifdef linux
1856 /* umount will fail to release the loop device since we still have
1857 a handle to it, so we release it here */
1858 if (major(st.st_rdev) == LOOP_MAJOR) ioctl( unix_fd, 0x4c01 /*LOOP_CLR_FD*/, 0 );
1859 #endif
1860 }
1861 RtlFreeHeap( GetProcessHeap(), 0, mount_point );
1862 }
1863 }
1864 if (needs_close) close( unix_fd );
1865 }
1866 return status;
1867 }
1868
1869
1870 /******************************************************************************
1871 * DIR_get_unix_cwd
1872 *
1873 * Retrieve the Unix name of the current directory; helper for wine_unix_to_nt_file_name.
1874 * Returned value must be freed by caller.
1875 */
1876 NTSTATUS DIR_get_unix_cwd( char **cwd )
1877 {
1878 int old_cwd, unix_fd, needs_close;
1879 CURDIR *curdir;
1880 HANDLE handle;
1881 NTSTATUS status;
1882
1883 RtlAcquirePebLock();
1884
1885 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
1886 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
1887 else
1888 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
1889
1890 if (!(handle = curdir->Handle))
1891 {
1892 UNICODE_STRING dirW;
1893 OBJECT_ATTRIBUTES attr;
1894 IO_STATUS_BLOCK io;
1895
1896 if (!RtlDosPathNameToNtPathName_U( curdir->DosPath.Buffer, &dirW, NULL, NULL ))
1897 {
1898 status = STATUS_OBJECT_NAME_INVALID;
1899 goto done;
1900 }
1901 attr.Length = sizeof(attr);
1902 attr.RootDirectory = 0;
1903 attr.Attributes = OBJ_CASE_INSENSITIVE;
1904 attr.ObjectName = &dirW;
1905 attr.SecurityDescriptor = NULL;
1906 attr.SecurityQualityOfService = NULL;
1907
1908 status = NtOpenFile( &handle, 0, &attr, &io, 0,
1909 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
1910 RtlFreeUnicodeString( &dirW );
1911 if (status != STATUS_SUCCESS) goto done;
1912 }
1913
1914 if ((status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL )) == STATUS_SUCCESS)
1915 {
1916 RtlEnterCriticalSection( &dir_section );
1917
1918 if ((old_cwd = open(".", O_RDONLY)) != -1 && fchdir( unix_fd ) != -1)
1919 {
1920 unsigned int size = 512;
1921
1922 for (;;)
1923 {
1924 if (!(*cwd = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1925 {
1926 status = STATUS_NO_MEMORY;
1927 break;
1928 }
1929 if (getcwd( *cwd, size )) break;
1930 RtlFreeHeap( GetProcessHeap(), 0, *cwd );
1931 if (errno != ERANGE)
1932 {
1933 status = STATUS_OBJECT_PATH_INVALID;
1934 break;
1935 }
1936 size *= 2;
1937 }
1938 if (fchdir( old_cwd ) == -1) chdir( "/" );
1939 }
1940 else status = FILE_GetNtStatus();
1941
1942 RtlLeaveCriticalSection( &dir_section );
1943 if (needs_close) close( unix_fd );
1944 }
1945 if (!curdir->Handle) NtClose( handle );
1946
1947 done:
1948 RtlReleasePebLock();
1949 return status;
1950 }
1951
1952 struct read_changes_info
1953 {
1954 HANDLE FileHandle;
1955 HANDLE Event;
1956 PIO_APC_ROUTINE ApcRoutine;
1957 PVOID ApcContext;
1958 PVOID Buffer;
1959 ULONG BufferSize;
1960 };
1961
1962 static void WINAPI read_changes_apc( void *user, PIO_STATUS_BLOCK iosb, ULONG status )
1963 {
1964 struct read_changes_info *info = user;
1965 char path[PATH_MAX];
1966 NTSTATUS ret = STATUS_SUCCESS;
1967 int len, action, i;
1968
1969 TRACE("%p %p %p %08x\n", info, info->ApcContext, iosb, status);
1970
1971 /*
1972 * FIXME: race me!
1973 *
1974 * hEvent/hDir is set before the output buffer and iosb is updated.
1975 * Since the thread that called NtNotifyChangeDirectoryFile is usually
1976 * waiting, we'll be safe since we're called in that thread's context.
1977 * If a different thread is waiting on our hEvent/hDir we're going to be
1978 * in trouble...
1979 */
1980 SERVER_START_REQ( read_change )
1981 {
1982 req->handle = info->FileHandle;
1983 wine_server_set_reply( req, path, PATH_MAX );
1984 ret = wine_server_call( req );
1985 action = reply->action;
1986 len = wine_server_reply_size( reply );
1987 }
1988 SERVER_END_REQ;
1989
1990 if (ret == STATUS_SUCCESS && info->Buffer &&
1991 (info->BufferSize > (sizeof (FILE_NOTIFY_INFORMATION) + len*sizeof(WCHAR))))
1992 {
1993 PFILE_NOTIFY_INFORMATION pfni;
1994
1995 pfni = (PFILE_NOTIFY_INFORMATION) info->Buffer;
1996
1997 /* convert to an NT style path */
1998 for (i=0; i<len; i++)
1999 if (path[i] == '/')
2000 path[i] = '\\';
2001
2002 len = ntdll_umbstowcs( 0, path, len, pfni->FileName,
2003 info->BufferSize - sizeof (*pfni) );
2004
2005 pfni->NextEntryOffset = 0;
2006 pfni->Action = action;
2007 pfni->FileNameLength = len * sizeof (WCHAR);
2008 pfni->FileName[len] = 0;
2009
2010 TRACE("action = %d name = %s\n", pfni->Action,
2011 debugstr_w(pfni->FileName) );
2012 len = sizeof (*pfni) - sizeof (DWORD) + pfni->FileNameLength;
2013 }
2014 else
2015 {
2016 ret = STATUS_NOTIFY_ENUM_DIR;
2017 len = 0;
2018 }
2019
2020 iosb->u.Status = ret;
2021 iosb->Information = len;
2022
2023 RtlFreeHeap( GetProcessHeap(), 0, info );
2024 }
2025
2026 #define FILE_NOTIFY_ALL ( \
2027 FILE_NOTIFY_CHANGE_FILE_NAME | \
2028 FILE_NOTIFY_CHANGE_DIR_NAME | \
2029 FILE_NOTIFY_CHANGE_ATTRIBUTES | \
2030 FILE_NOTIFY_CHANGE_SIZE | \
2031 FILE_NOTIFY_CHANGE_LAST_WRITE | \
2032 FILE_NOTIFY_CHANGE_LAST_ACCESS | \
2033 FILE_NOTIFY_CHANGE_CREATION | \
2034 FILE_NOTIFY_CHANGE_SECURITY )
2035
2036 /******************************************************************************
2037 * NtNotifyChangeDirectoryFile [NTDLL.@]
2038 */
2039 NTSTATUS WINAPI
2040 NtNotifyChangeDirectoryFile( HANDLE FileHandle, HANDLE Event,
2041 PIO_APC_ROUTINE ApcRoutine, PVOID ApcContext,
2042 PIO_STATUS_BLOCK IoStatusBlock, PVOID Buffer,
2043 ULONG BufferSize, ULONG CompletionFilter, BOOLEAN WatchTree )
2044 {
2045 struct read_changes_info *info;
2046 NTSTATUS status;
2047
2048 TRACE("%p %p %p %p %p %p %u %u %d\n",
2049 FileHandle, Event, ApcRoutine, ApcContext, IoStatusBlock,
2050 Buffer, BufferSize, CompletionFilter, WatchTree );
2051
2052 if (!IoStatusBlock)
2053 return STATUS_ACCESS_VIOLATION;
2054
2055 if (CompletionFilter == 0 || (CompletionFilter & ~FILE_NOTIFY_ALL))
2056 return STATUS_INVALID_PARAMETER;
2057
2058 if (ApcRoutine)
2059 FIXME("parameters ignored %p %p\n", ApcRoutine, ApcContext );
2060
2061 info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof *info );
2062 if (!info)
2063 return STATUS_NO_MEMORY;
2064
2065 info->FileHandle = FileHandle;
2066 info->Event = Event;
2067 info->Buffer = Buffer;
2068 info->BufferSize = BufferSize;
2069 info->ApcRoutine = ApcRoutine;
2070 info->ApcContext = ApcContext;
2071
2072 SERVER_START_REQ( read_directory_changes )
2073 {
2074 req->handle = FileHandle;
2075 req->event = Event;
2076 req->filter = CompletionFilter;
2077 req->want_data = (Buffer != NULL);
2078 req->subtree = WatchTree;
2079 req->io_apc = read_changes_apc;
2080 req->io_sb = IoStatusBlock;
2081 req->io_user = info;
2082 status = wine_server_call( req );
2083 }
2084 SERVER_END_REQ;
2085
2086 if (status != STATUS_PENDING)
2087 RtlFreeHeap( GetProcessHeap(), 0, info );
2088
2089 return status;
2090 }
Windows API implementation