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push bc3e5bf5ba806943a97979264a1f2e4a4dde5c94
[wine/hacks.git] / dlls / ntdll / directory.c
blobd4ccf5f381709c3f0e18ae81c3bd785610379436
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, char *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 const unsigned int max_dir_info_size = FIELD_OFFSET( FILE_BOTH_DIR_INFORMATION, FileName[MAX_DIR_ENTRY_LEN] );
139
140 static int show_dot_files = -1;
141
142 /* at some point we may want to allow Winelib apps to set this */
143 static const int is_case_sensitive = FALSE;
144
145 static RTL_CRITICAL_SECTION dir_section;
146 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
147 {
148 0, 0, &dir_section,
149 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
150 0, 0, { (DWORD_PTR)(__FILE__ ": dir_section") }
151 };
152 static RTL_CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
153
154
155 /* check if a given Unicode char is OK in a DOS short name */
156 static inline BOOL is_invalid_dos_char( WCHAR ch )
157 {
158 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
159 if (ch > 0x7f) return TRUE;
160 return strchrW( invalid_chars, ch ) != NULL;
161 }
162
163 /* check if the device can be a mounted volume */
164 static inline int is_valid_mounted_device( const struct stat *st )
165 {
166 #if defined(linux) || defined(__sun__)
167 return S_ISBLK( st->st_mode );
168 #else
169 /* disks are char devices on *BSD */
170 return S_ISCHR( st->st_mode );
171 #endif
172 }
173
174 /***********************************************************************
175 * get_default_com_device
176 *
177 * Return the default device to use for serial ports.
178 */
179 static char *get_default_com_device( int num )
180 {
181 char *ret = NULL;
182
183 if (!num || num > 9) return ret;
184 #ifdef linux
185 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
186 if (ret)
187 {
188 strcpy( ret, "/dev/ttyS0" );
189 ret[strlen(ret) - 1] = '0' + num - 1;
190 }
191 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
192 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/cuad0") );
193 if (ret)
194 {
195 strcpy( ret, "/dev/cuad0" );
196 ret[strlen(ret) - 1] = '0' + num - 1;
197 }
198 #else
199 FIXME( "no known default for device com%d\n", num );
200 #endif
201 return ret;
202 }
203
204
205 /***********************************************************************
206 * get_default_lpt_device
207 *
208 * Return the default device to use for parallel ports.
209 */
210 static char *get_default_lpt_device( int num )
211 {
212 char *ret = NULL;
213
214 if (!num || num > 9) return ret;
215 #ifdef linux
216 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
217 if (ret)
218 {
219 strcpy( ret, "/dev/lp0" );
220 ret[strlen(ret) - 1] = '0' + num - 1;
221 }
222 #else
223 FIXME( "no known default for device lpt%d\n", num );
224 #endif
225 return ret;
226 }
227
228
229 /***********************************************************************
230 * parse_mount_entries
231 *
232 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
233 */
234
235 #ifdef sun
236 #include <sys/vfstab.h>
237 static char *parse_vfstab_entries( FILE *f, dev_t dev, ino_t ino)
238 {
239 struct vfstab 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 struct mnttab entry;
337 struct stat st;
338 char *device;
339
340
341 while (( ! getmntent( f, &entry) ))
342 {
343 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
344 if (!strcmp( entry.mnt_fstype, "nfs" ) ||
345 !strcmp( entry.mnt_fstype, "smbfs" ) ||
346 !strcmp( entry.mnt_fstype, "ncpfs" )) continue;
347
348 if (stat( entry.mnt_mountp, &st ) == -1) continue;
349 if (st.st_dev != dev || st.st_ino != ino) continue;
350 if (!strcmp( entry.mnt_fstype, "fd" ))
351 {
352 if ((device = strstr( entry.mnt_mntopts, "dev=" )))
353 {
354 char *p = strchr( device + 4, ',' );
355 if (p) *p = 0;
356 return device + 4;
357 }
358 }
359 else
360 return entry.mnt_special;
361 }
362 return NULL;
363 }
364 #endif
365
366 /***********************************************************************
367 * get_default_drive_device
368 *
369 * Return the default device to use for a given drive mount point.
370 */
371 static char *get_default_drive_device( const char *root )
372 {
373 char *ret = NULL;
374
375 #ifdef linux
376 FILE *f;
377 char *device = NULL;
378 int fd, res = -1;
379 struct stat st;
380
381 /* try to open it first to force it to get mounted */
382 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
383 {
384 res = fstat( fd, &st );
385 close( fd );
386 }
387 /* now try normal stat just in case */
388 if (res == -1) res = stat( root, &st );
389 if (res == -1) return NULL;
390
391 RtlEnterCriticalSection( &dir_section );
392
393 if ((f = fopen( "/etc/mtab", "r" )))
394 {
395 device = parse_mount_entries( f, st.st_dev, st.st_ino );
396 endmntent( f );
397 }
398 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
399 if (!device && (f = fopen( "/etc/fstab", "r" )))
400 {
401 device = parse_mount_entries( f, st.st_dev, st.st_ino );
402 endmntent( f );
403 }
404 if (device)
405 {
406 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
407 if (ret) strcpy( ret, device );
408 }
409 RtlLeaveCriticalSection( &dir_section );
410
411 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__ )
412 char *device = NULL;
413 int fd, res = -1;
414 struct stat st;
415
416 /* try to open it first to force it to get mounted */
417 if ((fd = open( root, O_RDONLY )) != -1)
418 {
419 res = fstat( fd, &st );
420 close( fd );
421 }
422 /* now try normal stat just in case */
423 if (res == -1) res = stat( root, &st );
424 if (res == -1) return NULL;
425
426 RtlEnterCriticalSection( &dir_section );
427
428 /* The FreeBSD parse_mount_entries doesn't require a file argument, so just
429 * pass NULL. Leave the argument in for symmetry.
430 */
431 device = parse_mount_entries( NULL, st.st_dev, st.st_ino );
432 if (device)
433 {
434 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
435 if (ret) strcpy( ret, device );
436 }
437 RtlLeaveCriticalSection( &dir_section );
438
439 #elif defined( sun )
440 FILE *f;
441 char *device = NULL;
442 int fd, res = -1;
443 struct stat st;
444
445 /* try to open it first to force it to get mounted */
446 if ((fd = open( root, O_RDONLY )) != -1)
447 {
448 res = fstat( fd, &st );
449 close( fd );
450 }
451 /* now try normal stat just in case */
452 if (res == -1) res = stat( root, &st );
453 if (res == -1) return NULL;
454
455 RtlEnterCriticalSection( &dir_section );
456
457 if ((f = fopen( "/etc/mnttab", "r" )))
458 {
459 device = parse_mount_entries( f, st.st_dev, st.st_ino);
460 fclose( f );
461 }
462 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
463 if (!device && (f = fopen( "/etc/vfstab", "r" )))
464 {
465 device = parse_vfstab_entries( f, st.st_dev, st.st_ino );
466 fclose( f );
467 }
468 if (device)
469 {
470 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
471 if (ret) strcpy( ret, device );
472 }
473 RtlLeaveCriticalSection( &dir_section );
474
475 #elif defined(__APPLE__)
476 struct statfs *mntStat;
477 struct stat st;
478 int i;
479 int mntSize;
480 dev_t dev;
481 ino_t ino;
482 static const char path_bsd_device[] = "/dev/disk";
483 int res;
484
485 res = stat( root, &st );
486 if (res == -1) return NULL;
487
488 dev = st.st_dev;
489 ino = st.st_ino;
490
491 RtlEnterCriticalSection( &dir_section );
492
493 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
494
495 for (i = 0; i < mntSize && !ret; i++)
496 {
497 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
498 if (st.st_dev != dev || st.st_ino != ino) continue;
499
500 /* FIXME add support for mounted network drive */
501 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
502 {
503 /* set return value to the corresponding raw BSD node */
504 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
505 if (ret)
506 {
507 strcpy(ret, "/dev/r");
508 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
509 }
510 }
511 }
512 RtlLeaveCriticalSection( &dir_section );
513 #else
514 static int warned;
515 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
516 #endif
517 return ret;
518 }
519
520
521 /***********************************************************************
522 * get_device_mount_point
523 *
524 * Return the current mount point for a device.
525 */
526 static char *get_device_mount_point( dev_t dev )
527 {
528 char *ret = NULL;
529
530 #ifdef linux
531 FILE *f;
532
533 RtlEnterCriticalSection( &dir_section );
534
535 if ((f = fopen( "/etc/mtab", "r" )))
536 {
537 struct mntent *entry;
538 struct stat st;
539 char *p, *device;
540
541 while ((entry = getmntent( f )))
542 {
543 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
544 if (!strcmp( entry->mnt_type, "nfs" ) ||
545 !strcmp( entry->mnt_type, "smbfs" ) ||
546 !strcmp( entry->mnt_type, "ncpfs" )) continue;
547
548 if (!strcmp( entry->mnt_type, "supermount" ))
549 {
550 if ((device = strstr( entry->mnt_opts, "dev=" )))
551 {
552 device += 4;
553 if ((p = strchr( device, ',' ))) *p = 0;
554 }
555 }
556 else if (!stat( entry->mnt_fsname, &st ) && S_ISREG(st.st_mode))
557 {
558 /* if device is a regular file check for a loop mount */
559 if ((device = strstr( entry->mnt_opts, "loop=" )))
560 {
561 device += 5;
562 if ((p = strchr( device, ',' ))) *p = 0;
563 }
564 }
565 else device = entry->mnt_fsname;
566
567 if (device && !stat( device, &st ) && S_ISBLK(st.st_mode) && st.st_rdev == dev)
568 {
569 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry->mnt_dir) + 1 );
570 if (ret) strcpy( ret, entry->mnt_dir );
571 break;
572 }
573 }
574 endmntent( f );
575 }
576 RtlLeaveCriticalSection( &dir_section );
577 #elif defined(__APPLE__)
578 struct statfs *entry;
579 struct stat st;
580 int i, size;
581
582 RtlEnterCriticalSection( &dir_section );
583
584 size = getmntinfo( &entry, MNT_NOWAIT );
585 for (i = 0; i < size; i++)
586 {
587 if (stat( entry[i].f_mntfromname, &st ) == -1) continue;
588 if (S_ISBLK(st.st_mode) && st.st_rdev == dev)
589 {
590 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(entry[i].f_mntfromname) + 1 );
591 if (ret) strcpy( ret, entry[i].f_mntfromname );
592 break;
593 }
594 }
595 RtlLeaveCriticalSection( &dir_section );
596 #else
597 static int warned;
598 if (!warned++) FIXME( "unmounting devices not supported on this platform\n" );
599 #endif
600 return ret;
601 }
602
603
604 /***********************************************************************
605 * init_options
606 *
607 * Initialize the show_dot_files options.
608 */
609 static void init_options(void)
610 {
611 static const WCHAR WineW[] = {'S','o','f','t','w','a','r','e','\\','W','i','n','e',0};
612 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
613 char tmp[80];
614 HANDLE root, hkey;
615 DWORD dummy;
616 OBJECT_ATTRIBUTES attr;
617 UNICODE_STRING nameW;
618
619 show_dot_files = 0;
620
621 RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
622 attr.Length = sizeof(attr);
623 attr.RootDirectory = root;
624 attr.ObjectName = &nameW;
625 attr.Attributes = 0;
626 attr.SecurityDescriptor = NULL;
627 attr.SecurityQualityOfService = NULL;
628 RtlInitUnicodeString( &nameW, WineW );
629
630 /* @@ Wine registry key: HKCU\Software\Wine */
631 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
632 {
633 RtlInitUnicodeString( &nameW, ShowDotFilesW );
634 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
635 {
636 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
637 show_dot_files = IS_OPTION_TRUE( str[0] );
638 }
639 NtClose( hkey );
640 }
641 NtClose( root );
642 }
643
644
645 /***********************************************************************
646 * DIR_is_hidden_file
647 *
648 * Check if the specified file should be hidden based on its name and the show dot files option.
649 */
650 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
651 {
652 WCHAR *p, *end;
653
654 if (show_dot_files == -1) init_options();
655 if (show_dot_files) return FALSE;
656
657 end = p = name->Buffer + name->Length/sizeof(WCHAR);
658 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
659 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
660 if (p == end || *p != '.') return FALSE;
661 /* make sure it isn't '.' or '..' */
662 if (p + 1 == end) return FALSE;
663 if (p[1] == '.' && p + 2 == end) return FALSE;
664 return TRUE;
665 }
666
667
668 /***********************************************************************
669 * hash_short_file_name
670 *
671 * Transform a Unix file name into a hashed DOS name. If the name is a valid
672 * DOS name, it is converted to upper-case; otherwise it is replaced by a
673 * hashed version that fits in 8.3 format.
674 * 'buffer' must be at least 12 characters long.
675 * Returns length of short name in bytes; short name is NOT null-terminated.
676 */
677 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
678 {
679 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
680
681 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
682 LPWSTR dst;
683 unsigned short hash;
684 int i;
685
686 /* Compute the hash code of the file name */
687 /* If you know something about hash functions, feel free to */
688 /* insert a better algorithm here... */
689 if (!is_case_sensitive)
690 {
691 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
692 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
693 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
694 }
695 else
696 {
697 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
698 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
699 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
700 }
701
702 /* Find last dot for start of the extension */
703 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
704
705 /* Copy first 4 chars, replacing invalid chars with '_' */
706 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
707 {
708 if (p == end || p == ext) break;
709 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
710 }
711 /* Pad to 5 chars with '~' */
712 while (i-- >= 0) *dst++ = '~';
713
714 /* Insert hash code converted to 3 ASCII chars */
715 *dst++ = hash_chars[(hash >> 10) & 0x1f];
716 *dst++ = hash_chars[(hash >> 5) & 0x1f];
717 *dst++ = hash_chars[hash & 0x1f];
718
719 /* Copy the first 3 chars of the extension (if any) */
720 if (ext)
721 {
722 *dst++ = '.';
723 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
724 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
725 }
726 return dst - buffer;
727 }
728
729
730 /***********************************************************************
731 * match_filename
732 *
733 * Check a long file name against a mask.
734 *
735 * Tests (done in W95 DOS shell - case insensitive):
736 * *.txt test1.test.txt *
737 * *st1* test1.txt *
738 * *.t??????.t* test1.ta.tornado.txt *
739 * *tornado* test1.ta.tornado.txt *
740 * t*t test1.ta.tornado.txt *
741 * ?est* test1.txt *
742 * ?est??? test1.txt -
743 * *test1.txt* test1.txt *
744 * h?l?o*t.dat hellothisisatest.dat *
745 */
746 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
747 {
748 int mismatch;
749 const WCHAR *name = name_str->Buffer;
750 const WCHAR *mask = mask_str->Buffer;
751 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
752 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
753 const WCHAR *lastjoker = NULL;
754 const WCHAR *next_to_retry = NULL;
755
756 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
757
758 while (name < name_end && mask < mask_end)
759 {
760 switch(*mask)
761 {
762 case '*':
763 mask++;
764 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
765 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
766 lastjoker = mask;
767
768 /* skip to the next match after the joker(s) */
769 if (is_case_sensitive)
770 while (name < name_end && (*name != *mask)) name++;
771 else
772 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
773 next_to_retry = name;
774 break;
775 case '?':
776 mask++;
777 name++;
778 break;
779 default:
780 if (is_case_sensitive) mismatch = (*mask != *name);
781 else mismatch = (toupperW(*mask) != toupperW(*name));
782
783 if (!mismatch)
784 {
785 mask++;
786 name++;
787 if (mask == mask_end)
788 {
789 if (name == name_end) return TRUE;
790 if (lastjoker) mask = lastjoker;
791 }
792 }
793 else /* mismatch ! */
794 {
795 if (lastjoker) /* we had an '*', so we can try unlimitedly */
796 {
797 mask = lastjoker;
798
799 /* this scan sequence was a mismatch, so restart
800 * 1 char after the first char we checked last time */
801 next_to_retry++;
802 name = next_to_retry;
803 }
804 else return FALSE; /* bad luck */
805 }
806 break;
807 }
808 }
809 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
810 mask++; /* Ignore trailing '.' or '*' in mask */
811 return (name == name_end && mask == mask_end);
812 }
813
814
815 /***********************************************************************
816 * append_entry
817 *
818 * helper for NtQueryDirectoryFile
819 */
820 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG_PTR *pos, ULONG max_length,
821 const char *long_name, const char *short_name,
822 const UNICODE_STRING *mask )
823 {
824 FILE_BOTH_DIR_INFORMATION *info;
825 int i, long_len, short_len, total_len;
826 struct stat st;
827 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
828 WCHAR short_nameW[12];
829 UNICODE_STRING str;
830
831 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
832 if (long_len == -1) return NULL;
833
834 str.Buffer = long_nameW;
835 str.Length = long_len * sizeof(WCHAR);
836 str.MaximumLength = sizeof(long_nameW);
837
838 if (short_name)
839 {
840 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
841 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
842 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
843 }
844 else /* generate a short name if necessary */
845 {
846 BOOLEAN spaces;
847
848 short_len = 0;
849 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
850 short_len = hash_short_file_name( &str, short_nameW );
851 }
852
853 TRACE( "long %s short %s mask %s\n",
854 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
855
856 if (mask && !match_filename( &str, mask ))
857 {
858 if (!short_len) return NULL; /* no short name to match */
859 str.Buffer = short_nameW;
860 str.Length = short_len * sizeof(WCHAR);
861 str.MaximumLength = sizeof(short_nameW);
862 if (!match_filename( &str, mask )) return NULL;
863 }
864
865 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
866 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
867
868 if (*pos + total_len > max_length) total_len = max_length - *pos;
869
870 info->FileAttributes = 0;
871 if (lstat( long_name, &st ) == -1) return NULL;
872 if (S_ISLNK( st.st_mode ))
873 {
874 if (stat( long_name, &st ) == -1) return NULL;
875 if (S_ISDIR( st.st_mode )) info->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
876 }
877
878 info->NextEntryOffset = total_len;
879 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
880
881 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
882 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
883 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
884 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
885
886 if (S_ISDIR(st.st_mode))
887 {
888 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
889 info->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
890 }
891 else
892 {
893 info->EndOfFile.QuadPart = st.st_size;
894 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
895 info->FileAttributes |= FILE_ATTRIBUTE_ARCHIVE;
896 }
897
898 if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
899 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
900
901 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
902 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
903
904 info->EaSize = 0; /* FIXME */
905 info->ShortNameLength = short_len * sizeof(WCHAR);
906 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
907 info->FileNameLength = long_len * sizeof(WCHAR);
908 memcpy( info->FileName, long_nameW,
909 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
910
911 *pos += total_len;
912 return info;
913 }
914
915
916 #ifdef VFAT_IOCTL_READDIR_BOTH
917
918 /***********************************************************************
919 * start_vfat_ioctl
920 *
921 * Wrapper for the VFAT ioctl to work around various kernel bugs.
922 * dir_section must be held by caller.
923 */
924 static KERNEL_DIRENT *start_vfat_ioctl( int fd )
925 {
926 static KERNEL_DIRENT *de;
927 int res;
928
929 if (!de)
930 {
931 const size_t page_size = getpagesize();
932 SIZE_T size = 2 * sizeof(*de) + page_size;
933 void *addr = NULL;
934
935 if (NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_RESERVE, PAGE_READWRITE ))
936 return NULL;
937 /* commit only the size needed for the dir entries */
938 /* this leaves an extra unaccessible page, which should make the kernel */
939 /* fail with -EFAULT before it stomps all over our memory */
940 de = addr;
941 size = 2 * sizeof(*de);
942 NtAllocateVirtualMemory( GetCurrentProcess(), &addr, 1, &size, MEM_COMMIT, PAGE_READWRITE );
943 }
944
945 /* set d_reclen to 65535 to work around an AFS kernel bug */
946 de[0].d_reclen = 65535;
947 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
948 if (res == -1)
949 {
950 if (errno != ENOENT) return NULL; /* VFAT ioctl probably not supported */
951 de[0].d_reclen = 0; /* eof */
952 }
953 else if (!res && de[0].d_reclen == 65535) return NULL; /* AFS bug */
954
955 return de;
956 }
957
958
959 /***********************************************************************
960 * read_directory_vfat
961 *
962 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
963 */
964 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
965 BOOLEAN single_entry, const UNICODE_STRING *mask,
966 BOOLEAN restart_scan )
967
968 {
969 size_t len;
970 KERNEL_DIRENT *de;
971 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
972
973 io->u.Status = STATUS_SUCCESS;
974
975 if (restart_scan) lseek( fd, 0, SEEK_SET );
976
977 if (length < max_dir_info_size) /* we may have to return a partial entry here */
978 {
979 off_t old_pos = lseek( fd, 0, SEEK_CUR );
980
981 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
982
983 while (de[0].d_reclen)
984 {
985 /* make sure names are null-terminated to work around an x86-64 kernel bug */
986 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
987 de[0].d_name[len] = 0;
988 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
989 de[1].d_name[len] = 0;
990
991 if (de[1].d_name[0])
992 info = append_entry( buffer, &io->Information, length,
993 de[1].d_name, de[0].d_name, mask );
994 else
995 info = append_entry( buffer, &io->Information, length,
996 de[0].d_name, NULL, mask );
997 if (info)
998 {
999 last_info = info;
1000 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1001 {
1002 io->u.Status = STATUS_BUFFER_OVERFLOW;
1003 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1004 }
1005 break;
1006 }
1007 old_pos = lseek( fd, 0, SEEK_CUR );
1008 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1009 }
1010 }
1011 else /* we'll only return full entries, no need to worry about overflow */
1012 {
1013 if (!(de = start_vfat_ioctl( fd ))) return -1; /* not supported */
1014
1015 while (de[0].d_reclen)
1016 {
1017 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1018 len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1019 de[0].d_name[len] = 0;
1020 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1021 de[1].d_name[len] = 0;
1022
1023 if (de[1].d_name[0])
1024 info = append_entry( buffer, &io->Information, length,
1025 de[1].d_name, de[0].d_name, mask );
1026 else
1027 info = append_entry( buffer, &io->Information, length,
1028 de[0].d_name, NULL, mask );
1029 if (info)
1030 {
1031 last_info = info;
1032 if (single_entry) break;
1033 /* check if we still have enough space for the largest possible entry */
1034 if (io->Information + max_dir_info_size > length) break;
1035 }
1036 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
1037 }
1038 }
1039
1040 if (last_info) last_info->NextEntryOffset = 0;
1041 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1042 return 0;
1043 }
1044 #endif /* VFAT_IOCTL_READDIR_BOTH */
1045
1046
1047 /***********************************************************************
1048 * read_directory_getdents
1049 *
1050 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
1051 */
1052 #ifdef USE_GETDENTS
1053 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1054 BOOLEAN single_entry, const UNICODE_STRING *mask,
1055 BOOLEAN restart_scan )
1056 {
1057 off_t old_pos = 0;
1058 size_t size = length;
1059 int res, fake_dot_dot = 1;
1060 char *data, local_buffer[8192];
1061 KERNEL_DIRENT64 *de;
1062 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
1063
1064 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1065 {
1066 size = sizeof(local_buffer);
1067 data = local_buffer;
1068 }
1069
1070 if (restart_scan) lseek( fd, 0, SEEK_SET );
1071 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
1072 {
1073 old_pos = lseek( fd, 0, SEEK_CUR );
1074 if (old_pos == -1 && errno == ENOENT)
1075 {
1076 io->u.Status = STATUS_NO_MORE_FILES;
1077 res = 0;
1078 goto done;
1079 }
1080 }
1081
1082 io->u.Status = STATUS_SUCCESS;
1083
1084 res = getdents64( fd, data, size );
1085 if (res == -1)
1086 {
1087 if (errno != ENOSYS)
1088 {
1089 io->u.Status = FILE_GetNtStatus();
1090 res = 0;
1091 }
1092 goto done;
1093 }
1094
1095 de = (KERNEL_DIRENT64 *)data;
1096
1097 if (restart_scan)
1098 {
1099 /* check if we got . and .. from getdents */
1100 if (res > 0)
1101 {
1102 if (!strcmp( de->d_name, "." ) && res > de->d_reclen)
1103 {
1104 KERNEL_DIRENT64 *next_de = (KERNEL_DIRENT64 *)(data + de->d_reclen);
1105 if (!strcmp( next_de->d_name, ".." )) fake_dot_dot = 0;
1106 }
1107 }
1108 /* make sure we have enough room for both entries */
1109 if (fake_dot_dot)
1110 {
1111 static const ULONG min_info_size = (FIELD_OFFSET(FILE_BOTH_DIR_INFORMATION, FileName[1]) +
1112 FIELD_OFFSET(FILE_BOTH_DIR_INFORMATION, FileName[2]) + 3) & ~3;
1113 if (length < min_info_size || single_entry)
1114 {
1115 FIXME( "not enough room %u/%u for fake . and .. entries\n", length, single_entry );
1116 fake_dot_dot = 0;
1117 }
1118 }
1119
1120 if (fake_dot_dot)
1121 {
1122 if ((info = append_entry( buffer, &io->Information, length, ".", NULL, mask )))
1123 last_info = info;
1124 if ((info = append_entry( buffer, &io->Information, length, "..", NULL, mask )))
1125 last_info = info;
1126
1127 /* check if we still have enough space for the largest possible entry */
1128 if (last_info && io->Information + max_dir_info_size > length)
1129 {
1130 lseek( fd, 0, SEEK_SET ); /* reset pos to first entry */
1131 res = 0;
1132 }
1133 }
1134 }
1135
1136 while (res > 0)
1137 {
1138 res -= de->d_reclen;
1139 if (!(fake_dot_dot && (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." ))) &&
1140 (info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask )))
1141 {
1142 last_info = info;
1143 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1144 {
1145 io->u.Status = STATUS_BUFFER_OVERFLOW;
1146 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
1147 break;
1148 }
1149 /* check if we still have enough space for the largest possible entry */
1150 if (single_entry || io->Information + max_dir_info_size > length)
1151 {
1152 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
1153 break;
1154 }
1155 }
1156 old_pos = de->d_off;
1157 /* move on to the next entry */
1158 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
1159 else
1160 {
1161 res = getdents64( fd, data, size );
1162 de = (KERNEL_DIRENT64 *)data;
1163 }
1164 }
1165
1166 if (last_info) last_info->NextEntryOffset = 0;
1167 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1168 res = 0;
1169 done:
1170 if (data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
1171 return res;
1172 }
1173
1174 #elif defined HAVE_GETDIRENTRIES
1175
1176 /***********************************************************************
1177 * read_directory_getdirentries
1178 *
1179 * Read a directory using the BSD getdirentries system call; helper for NtQueryDirectoryFile.
1180 */
1181 static int read_directory_getdirentries( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1182 BOOLEAN single_entry, const UNICODE_STRING *mask,
1183 BOOLEAN restart_scan )
1184 {
1185 long restart_pos;
1186 ULONG_PTR restart_info_pos = 0;
1187 size_t size, initial_size = length;
1188 int res, fake_dot_dot = 1;
1189 char *data, local_buffer[8192];
1190 struct dirent *de;
1191 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL, *restart_last_info = NULL;
1192
1193 size = initial_size;
1194 data = local_buffer;
1195 if (size > sizeof(local_buffer) && !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
1196 {
1197 io->u.Status = STATUS_NO_MEMORY;
1198 return io->u.Status;
1199 }
1200
1201 if (restart_scan) lseek( fd, 0, SEEK_SET );
1202
1203 io->u.Status = STATUS_SUCCESS;
1204
1205 /* FIXME: should make sure size is larger than filesystem block size */
1206 res = getdirentries( fd, data, size, &restart_pos );
1207 if (res == -1)
1208 {
1209 io->u.Status = FILE_GetNtStatus();
1210 res = 0;
1211 goto done;
1212 }
1213
1214 de = (struct dirent *)data;
1215
1216 if (restart_scan)
1217 {
1218 /* check if we got . and .. from getdirentries */
1219 if (res > 0)
1220 {
1221 if (!strcmp( de->d_name, "." ) && res > de->d_reclen)
1222 {
1223 struct dirent *next_de = (struct dirent *)(data + de->d_reclen);
1224 if (!strcmp( next_de->d_name, ".." )) fake_dot_dot = 0;
1225 }
1226 }
1227 /* make sure we have enough room for both entries */
1228 if (fake_dot_dot)
1229 {
1230 static const ULONG min_info_size = (FIELD_OFFSET(FILE_BOTH_DIR_INFORMATION, FileName[1]) +
1231 FIELD_OFFSET(FILE_BOTH_DIR_INFORMATION, FileName[2]) + 3) & ~3;
1232 if (length < min_info_size || single_entry)
1233 {
1234 FIXME( "not enough room %u/%u for fake . and .. entries\n", length, single_entry );
1235 fake_dot_dot = 0;
1236 }
1237 }
1238
1239 if (fake_dot_dot)
1240 {
1241 if ((info = append_entry( buffer, &io->Information, length, ".", NULL, mask )))
1242 last_info = info;
1243 if ((info = append_entry( buffer, &io->Information, length, "..", NULL, mask )))
1244 last_info = info;
1245
1246 restart_last_info = last_info;
1247 restart_info_pos = io->Information;
1248
1249 /* check if we still have enough space for the largest possible entry */
1250 if (last_info && io->Information + max_dir_info_size > length)
1251 {
1252 lseek( fd, 0, SEEK_SET ); /* reset pos to first entry */
1253 res = 0;
1254 }
1255 }
1256 }
1257
1258 while (res > 0)
1259 {
1260 res -= de->d_reclen;
1261 if (de->d_fileno &&
1262 !(fake_dot_dot && (!strcmp( de->d_name, "." ) || !strcmp( de->d_name, ".." ))) &&
1263 ((info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask ))))
1264 {
1265 last_info = info;
1266 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1267 {
1268 lseek( fd, (unsigned long)restart_pos, SEEK_SET );
1269 if (restart_info_pos) /* if we have a complete read already, return it */
1270 {
1271 io->Information = restart_info_pos;
1272 last_info = restart_last_info;
1273 break;
1274 }
1275 /* otherwise restart from the start with a smaller size */
1276 size = (char *)de - data;
1277 if (!size)
1278 {
1279 io->u.Status = STATUS_BUFFER_OVERFLOW;
1280 break;
1281 }
1282 io->Information = 0;
1283 last_info = NULL;
1284 goto restart;
1285 }
1286 /* if we have to return but the buffer contains more data, restart with a smaller size */
1287 if (res > 0 && (single_entry || io->Information + max_dir_info_size > length))
1288 {
1289 lseek( fd, (unsigned long)restart_pos, SEEK_SET );
1290 size = (char *)de - data;
1291 io->Information = restart_info_pos;
1292 last_info = restart_last_info;
1293 goto restart;
1294 }
1295 }
1296 /* move on to the next entry */
1297 if (res > 0)
1298 {
1299 de = (struct dirent *)((char *)de + de->d_reclen);
1300 continue;
1301 }
1302 if (size < initial_size) break; /* already restarted once, give up now */
1303 size = min( size, length - io->Information );
1304 /* if size is too small don't bother to continue */
1305 if (size < max_dir_info_size && last_info) break;
1306 restart_last_info = last_info;
1307 restart_info_pos = io->Information;
1308 restart:
1309 res = getdirentries( fd, data, size, &restart_pos );
1310 de = (struct dirent *)data;
1311 }
1312
1313 if (last_info) last_info->NextEntryOffset = 0;
1314 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1315 res = 0;
1316 done:
1317 if (data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
1318 return res;
1319 }
1320 #endif /* HAVE_GETDIRENTRIES */
1321
1322
1323 /***********************************************************************
1324 * read_directory_readdir
1325 *
1326 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
1327 */
1328 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1329 BOOLEAN single_entry, const UNICODE_STRING *mask,
1330 BOOLEAN restart_scan )
1331 {
1332 DIR *dir;
1333 off_t i, old_pos = 0;
1334 struct dirent *de;
1335 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
1336
1337 if (!(dir = opendir( "." )))
1338 {
1339 io->u.Status = FILE_GetNtStatus();
1340 return;
1341 }
1342
1343 if (!restart_scan)
1344 {
1345 old_pos = lseek( fd, 0, SEEK_CUR );
1346 /* skip the right number of entries */
1347 for (i = 0; i < old_pos - 2; i++)
1348 {
1349 if (!readdir( dir ))
1350 {
1351 closedir( dir );
1352 io->u.Status = STATUS_NO_MORE_FILES;
1353 return;
1354 }
1355 }
1356 }
1357 io->u.Status = STATUS_SUCCESS;
1358
1359 for (;;)
1360 {
1361 if (old_pos == 0)
1362 info = append_entry( buffer, &io->Information, length, ".", NULL, mask );
1363 else if (old_pos == 1)
1364 info = append_entry( buffer, &io->Information, length, "..", NULL, mask );
1365 else if ((de = readdir( dir )))
1366 {
1367 if (strcmp( de->d_name, "." ) && strcmp( de->d_name, ".." ))
1368 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
1369 else
1370 info = NULL;
1371 }
1372 else
1373 break;
1374 old_pos++;
1375 if (info)
1376 {
1377 last_info = info;
1378 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1379 {
1380 io->u.Status = STATUS_BUFFER_OVERFLOW;
1381 old_pos--; /* restore pos to previous entry */
1382 break;
1383 }
1384 if (single_entry) break;
1385 /* check if we still have enough space for the largest possible entry */
1386 if (io->Information + max_dir_info_size > length) break;
1387 }
1388 }
1389
1390 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
1391 closedir( dir );
1392
1393 if (last_info) last_info->NextEntryOffset = 0;
1394 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1395 }
1396
1397 /***********************************************************************
1398 * read_directory_stat
1399 *
1400 * Read a single file from a directory by determining whether the file
1401 * identified by mask exists using stat.
1402 */
1403 static int read_directory_stat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
1404 BOOLEAN single_entry, const UNICODE_STRING *mask,
1405 BOOLEAN restart_scan )
1406 {
1407 int unix_len, ret, used_default;
1408 char *unix_name;
1409 struct stat st;
1410
1411 TRACE("trying optimisation for file %s\n", debugstr_us( mask ));
1412
1413 unix_len = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), NULL, 0, NULL, NULL );
1414 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len + 1)))
1415 {
1416 io->u.Status = STATUS_NO_MEMORY;
1417 return 0;
1418 }
1419 ret = ntdll_wcstoumbs( 0, mask->Buffer, mask->Length / sizeof(WCHAR), unix_name, unix_len,
1420 NULL, &used_default );
1421 if (ret > 0 && !used_default)
1422 {
1423 unix_name[ret] = 0;
1424 if (restart_scan)
1425 {
1426 lseek( fd, 0, SEEK_SET );
1427 }
1428 else if (lseek( fd, 0, SEEK_CUR ) != 0)
1429 {
1430 io->u.Status = STATUS_NO_MORE_FILES;
1431 ret = 0;
1432 goto done;
1433 }
1434
1435 ret = stat( unix_name, &st );
1436 if (!ret)
1437 {
1438 FILE_BOTH_DIR_INFORMATION *info = append_entry( buffer, &io->Information, length, unix_name, NULL, mask );
1439 if (info)
1440 {
1441 info->NextEntryOffset = 0;
1442 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1443 io->u.Status = STATUS_BUFFER_OVERFLOW;
1444 else
1445 lseek( fd, 1, SEEK_CUR );
1446 }
1447 }
1448 }
1449 else ret = -1;
1450
1451 done:
1452 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1453
1454 TRACE("returning %d\n", ret);
1455
1456 return ret;
1457 }
1458
1459
1460 static inline WCHAR *mempbrkW( const WCHAR *ptr, const WCHAR *accept, size_t n )
1461 {
1462 const WCHAR *end;
1463 for (end = ptr + n; ptr < end; ptr++) if (strchrW( accept, *ptr )) return (WCHAR *)ptr;
1464 return NULL;
1465 }
1466
1467 /******************************************************************************
1468 * NtQueryDirectoryFile [NTDLL.@]
1469 * ZwQueryDirectoryFile [NTDLL.@]
1470 */
1471 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
1472 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
1473 PIO_STATUS_BLOCK io,
1474 PVOID buffer, ULONG length,
1475 FILE_INFORMATION_CLASS info_class,
1476 BOOLEAN single_entry,
1477 PUNICODE_STRING mask,
1478 BOOLEAN restart_scan )
1479 {
1480 int cwd, fd, needs_close;
1481 static const WCHAR wszWildcards[] = { '*','?',0 };
1482
1483 TRACE("(%p %p %p %p %p %p 0x%08x 0x%08x 0x%08x %s 0x%08x\n",
1484 handle, event, apc_routine, apc_context, io, buffer,
1485 length, info_class, single_entry, debugstr_us(mask),
1486 restart_scan);
1487
1488 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
1489
1490 if (event || apc_routine)
1491 {
1492 FIXME( "Unsupported yet option\n" );
1493 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1494 }
1495 if (info_class != FileBothDirectoryInformation)
1496 {
1497 FIXME( "Unsupported file info class %d\n", info_class );
1498 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1499 }
1500
1501 if ((io->u.Status = server_get_unix_fd( handle, FILE_LIST_DIRECTORY, &fd, &needs_close, NULL, NULL )) != STATUS_SUCCESS)
1502 return io->u.Status;
1503
1504 io->Information = 0;
1505
1506 RtlEnterCriticalSection( &dir_section );
1507
1508 if (show_dot_files == -1) init_options();
1509
1510 cwd = open( ".", O_RDONLY );
1511 if (fchdir( fd ) != -1)
1512 {
1513 #ifdef VFAT_IOCTL_READDIR_BOTH
1514 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) != -1)
1515 goto done;
1516 #endif
1517 if (mask && !mempbrkW( mask->Buffer, wszWildcards, mask->Length / sizeof(WCHAR) ) &&
1518 read_directory_stat( fd, io, buffer, length, single_entry, mask, restart_scan ) != -1)
1519 goto done;
1520 #ifdef USE_GETDENTS
1521 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) != -1)
1522 goto done;
1523 #elif defined HAVE_GETDIRENTRIES
1524 if ((read_directory_getdirentries( fd, io, buffer, length, single_entry, mask, restart_scan )) != -1)
1525 goto done;
1526 #endif
1527 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
1528
1529 done:
1530 if (cwd == -1 || fchdir( cwd ) == -1) chdir( "/" );
1531 }
1532 else io->u.Status = FILE_GetNtStatus();
1533
1534 RtlLeaveCriticalSection( &dir_section );
1535
1536 if (needs_close) close( fd );
1537 if (cwd != -1) close( cwd );
1538 TRACE( "=> %x (%ld)\n", io->u.Status, io->Information );
1539 return io->u.Status;
1540 }
1541
1542
1543 /***********************************************************************
1544 * find_file_in_dir
1545 *
1546 * Find a file in a directory the hard way, by doing a case-insensitive search.
1547 * The file found is appended to unix_name at pos.
1548 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
1549 */
1550 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
1551 int check_case )
1552 {
1553 WCHAR buffer[MAX_DIR_ENTRY_LEN];
1554 UNICODE_STRING str;
1555 BOOLEAN spaces;
1556 DIR *dir;
1557 struct dirent *de;
1558 struct stat st;
1559 int ret, used_default, is_name_8_dot_3;
1560
1561 /* try a shortcut for this directory */
1562
1563 unix_name[pos++] = '/';
1564 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
1565 NULL, &used_default );
1566 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
1567 /* so it cannot match the file we are looking for */
1568 if (ret >= 0 && !used_default)
1569 {
1570 unix_name[pos + ret] = 0;
1571 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
1572 }
1573 if (check_case) goto not_found; /* we want an exact match */
1574
1575 if (pos > 1) unix_name[pos - 1] = 0;
1576 else unix_name[1] = 0; /* keep the initial slash */
1577
1578 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
1579
1580 str.Buffer = (WCHAR *)name;
1581 str.Length = length * sizeof(WCHAR);
1582 str.MaximumLength = str.Length;
1583 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
1584
1585 /* now look for it through the directory */
1586
1587 #ifdef VFAT_IOCTL_READDIR_BOTH
1588 if (is_name_8_dot_3)
1589 {
1590 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
1591 if (fd != -1)
1592 {
1593 KERNEL_DIRENT *de;
1594
1595 RtlEnterCriticalSection( &dir_section );
1596 if ((de = start_vfat_ioctl( fd )))
1597 {
1598 unix_name[pos - 1] = '/';
1599 while (de[0].d_reclen)
1600 {
1601 /* make sure names are null-terminated to work around an x86-64 kernel bug */
1602 size_t len = min(de[0].d_reclen, sizeof(de[0].d_name) - 1 );
1603 de[0].d_name[len] = 0;
1604 len = min(de[1].d_reclen, sizeof(de[1].d_name) - 1 );
1605 de[1].d_name[len] = 0;
1606
1607 if (de[1].d_name[0])
1608 {
1609 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1610 buffer, MAX_DIR_ENTRY_LEN );
1611 if (ret == length && !memicmpW( buffer, name, length))
1612 {
1613 strcpy( unix_name + pos, de[1].d_name );
1614 RtlLeaveCriticalSection( &dir_section );
1615 close( fd );
1616 return STATUS_SUCCESS;
1617 }
1618 }
1619 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1620 buffer, MAX_DIR_ENTRY_LEN );
1621 if (ret == length && !memicmpW( buffer, name, length))
1622 {
1623 strcpy( unix_name + pos,
1624 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1625 RtlLeaveCriticalSection( &dir_section );
1626 close( fd );
1627 return STATUS_SUCCESS;
1628 }
1629 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1630 {
1631 RtlLeaveCriticalSection( &dir_section );
1632 close( fd );
1633 goto not_found;
1634 }
1635 }
1636 }
1637 RtlLeaveCriticalSection( &dir_section );
1638 close( fd );
1639 }
1640 /* fall through to normal handling */
1641 }
1642 #endif /* VFAT_IOCTL_READDIR_BOTH */
1643
1644 if (!(dir = opendir( unix_name )))
1645 {
1646 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1647 else return FILE_GetNtStatus();
1648 }
1649 unix_name[pos - 1] = '/';
1650 str.Buffer = buffer;
1651 str.MaximumLength = sizeof(buffer);
1652 while ((de = readdir( dir )))
1653 {
1654 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1655 if (ret == length && !memicmpW( buffer, name, length ))
1656 {
1657 strcpy( unix_name + pos, de->d_name );
1658 closedir( dir );
1659 return STATUS_SUCCESS;
1660 }
1661
1662 if (!is_name_8_dot_3) continue;
1663
1664 str.Length = ret * sizeof(WCHAR);
1665 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1666 {
1667 WCHAR short_nameW[12];
1668 ret = hash_short_file_name( &str, short_nameW );
1669 if (ret == length && !memicmpW( short_nameW, name, length ))
1670 {
1671 strcpy( unix_name + pos, de->d_name );
1672 closedir( dir );
1673 return STATUS_SUCCESS;
1674 }
1675 }
1676 }
1677 closedir( dir );
1678 goto not_found; /* avoid warning */
1679
1680 not_found:
1681 unix_name[pos - 1] = 0;
1682 return STATUS_OBJECT_PATH_NOT_FOUND;
1683 }
1684
1685
1686 /******************************************************************************
1687 * get_dos_device
1688 *
1689 * Get the Unix path of a DOS device.
1690 */
1691 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1692 {
1693 const char *config_dir = wine_get_config_dir();
1694 struct stat st;
1695 char *unix_name, *new_name, *dev;
1696 unsigned int i;
1697 int unix_len;
1698
1699 /* make sure the device name is ASCII */
1700 for (i = 0; i < name_len; i++)
1701 if (name[i] <= 32 || name[i] >= 127) return STATUS_BAD_DEVICE_TYPE;
1702
1703 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1704
1705 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1706 return STATUS_NO_MEMORY;
1707
1708 strcpy( unix_name, config_dir );
1709 strcat( unix_name, "/dosdevices/" );
1710 dev = unix_name + strlen(unix_name);
1711
1712 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1713 dev[i] = 0;
1714
1715 /* special case for drive devices */
1716 if (name_len == 2 && dev[1] == ':')
1717 {
1718 dev[i++] = ':';
1719 dev[i] = 0;
1720 }
1721
1722 for (;;)
1723 {
1724 if (!stat( unix_name, &st ))
1725 {
1726 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1727 unix_name_ret->Buffer = unix_name;
1728 unix_name_ret->Length = strlen(unix_name);
1729 unix_name_ret->MaximumLength = unix_len;
1730 return STATUS_SUCCESS;
1731 }
1732 if (!dev) break;
1733
1734 /* now try some defaults for it */
1735 if (!strcmp( dev, "aux" ))
1736 {
1737 strcpy( dev, "com1" );
1738 continue;
1739 }
1740 if (!strcmp( dev, "prn" ))
1741 {
1742 strcpy( dev, "lpt1" );
1743 continue;
1744 }
1745 if (!strcmp( dev, "nul" ))
1746 {
1747 strcpy( unix_name, "/dev/null" );
1748 dev = NULL; /* last try */
1749 continue;
1750 }
1751
1752 new_name = NULL;
1753 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1754 {
1755 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1756 new_name = get_default_drive_device( unix_name );
1757 }
1758 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1759 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1760
1761 if (!new_name) break;
1762
1763 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1764 unix_name = new_name;
1765 unix_len = strlen(unix_name) + 1;
1766 dev = NULL; /* last try */
1767 }
1768 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1769 return STATUS_BAD_DEVICE_TYPE;
1770 }
1771
1772
1773 /* return the length of the DOS namespace prefix if any */
1774 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1775 {
1776 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1777 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1778
1779 if (name->Length > sizeof(nt_prefixW) &&
1780 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1781 return sizeof(nt_prefixW) / sizeof(WCHAR);
1782
1783 if (name->Length > sizeof(dosdev_prefixW) &&
1784 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1785 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1786
1787 return 0;
1788 }
1789
1790
1791 /******************************************************************************
1792 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1793 *
1794 * Convert a file name from NT namespace to Unix namespace.
1795 *
1796 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1797 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1798 * returned, but the unix name is still filled in properly.
1799 */
1800 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1801 UINT disposition, BOOLEAN check_case )
1802 {
1803 static const WCHAR unixW[] = {'u','n','i','x'};
1804 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1805
1806 NTSTATUS status = STATUS_SUCCESS;
1807 const char *config_dir = wine_get_config_dir();
1808 const WCHAR *name, *p;
1809 struct stat st;
1810 char *unix_name;
1811 int pos, ret, name_len, unix_len, prefix_len, used_default;
1812 WCHAR prefix[MAX_DIR_ENTRY_LEN];
1813 BOOLEAN is_unix = FALSE;
1814
1815 name = nameW->Buffer;
1816 name_len = nameW->Length / sizeof(WCHAR);
1817
1818 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1819
1820 if (!(pos = get_dos_prefix_len( nameW )))
1821 return STATUS_BAD_DEVICE_TYPE; /* no DOS prefix, assume NT native name */
1822
1823 name += pos;
1824 name_len -= pos;
1825
1826 /* check for sub-directory */
1827 for (pos = 0; pos < name_len; pos++)
1828 {
1829 if (IS_SEPARATOR(name[pos])) break;
1830 if (name[pos] < 32 || strchrW( invalid_charsW, name[pos] ))
1831 return STATUS_OBJECT_NAME_INVALID;
1832 }
1833 if (pos > MAX_DIR_ENTRY_LEN)
1834 return STATUS_OBJECT_NAME_INVALID;
1835
1836 if (pos == name_len) /* no subdir, plain DOS device */
1837 return get_dos_device( name, name_len, unix_name_ret );
1838
1839 for (prefix_len = 0; prefix_len < pos; prefix_len++)
1840 prefix[prefix_len] = tolowerW(name[prefix_len]);
1841
1842 name += prefix_len;
1843 name_len -= prefix_len;
1844
1845 /* check for invalid characters (all chars except 0 are valid for unix) */
1846 is_unix = (prefix_len == 4 && !memcmp( prefix, unixW, sizeof(unixW) ));
1847 if (is_unix)
1848 {
1849 for (p = name; p < name + name_len; p++)
1850 if (!*p) return STATUS_OBJECT_NAME_INVALID;
1851 check_case = TRUE;
1852 }
1853 else
1854 {
1855 for (p = name; p < name + name_len; p++)
1856 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1857 }
1858
1859 unix_len = ntdll_wcstoumbs( 0, prefix, prefix_len, NULL, 0, NULL, NULL );
1860 unix_len += ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1861 unix_len += MAX_DIR_ENTRY_LEN + 3;
1862 unix_len += strlen(config_dir) + sizeof("/dosdevices/");
1863 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1864 return STATUS_NO_MEMORY;
1865 strcpy( unix_name, config_dir );
1866 strcat( unix_name, "/dosdevices/" );
1867 pos = strlen(unix_name);
1868
1869 ret = ntdll_wcstoumbs( 0, prefix, prefix_len, unix_name + pos, unix_len - pos - 1,
1870 NULL, &used_default );
1871 if (!ret || used_default)
1872 {
1873 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1874 return STATUS_OBJECT_NAME_INVALID;
1875 }
1876 pos += ret;
1877
1878 /* check if prefix exists (except for DOS drives to avoid extra stat calls) */
1879
1880 if (prefix_len != 2 || prefix[1] != ':')
1881 {
1882 unix_name[pos] = 0;
1883 if (lstat( unix_name, &st ) == -1 && errno == ENOENT)
1884 {
1885 if (!is_unix)
1886 {
1887 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1888 return STATUS_BAD_DEVICE_TYPE;
1889 }
1890 pos = 0; /* fall back to unix root */
1891 }
1892 }
1893
1894 /* try a shortcut first */
1895
1896 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1897 NULL, &used_default );
1898
1899 while (name_len && IS_SEPARATOR(*name))
1900 {
1901 name++;
1902 name_len--;
1903 }
1904
1905 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1906 {
1907 char *p;
1908 unix_name[pos + ret] = 0;
1909 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1910 if (!stat( unix_name, &st ))
1911 {
1912 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1913 if (disposition == FILE_CREATE)
1914 {
1915 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1916 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1917 }
1918 goto done;
1919 }
1920 }
1921
1922 if (!name_len) /* empty name -> drive root doesn't exist */
1923 {
1924 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1925 return STATUS_OBJECT_PATH_NOT_FOUND;
1926 }
1927 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1928 {
1929 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1930 return STATUS_OBJECT_NAME_NOT_FOUND;
1931 }
1932
1933 /* now do it component by component */
1934
1935 while (name_len)
1936 {
1937 const WCHAR *end, *next;
1938
1939 end = name;
1940 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1941 next = end;
1942 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1943 name_len -= next - name;
1944
1945 /* grow the buffer if needed */
1946
1947 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1948 {
1949 char *new_name;
1950 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1951 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1952 {
1953 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1954 return STATUS_NO_MEMORY;
1955 }
1956 unix_name = new_name;
1957 }
1958
1959 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1960
1961 /* if this is the last element, not finding it is not necessarily fatal */
1962 if (!name_len)
1963 {
1964 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1965 {
1966 status = STATUS_OBJECT_NAME_NOT_FOUND;
1967 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1968 {
1969 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1970 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1971 if (ret > 0 && !used_default)
1972 {
1973 unix_name[pos] = '/';
1974 unix_name[pos + 1 + ret] = 0;
1975 status = STATUS_NO_SUCH_FILE;
1976 break;
1977 }
1978 }
1979 }
1980 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1981 {
1982 status = STATUS_OBJECT_NAME_COLLISION;
1983 }
1984 }
1985
1986 if (status != STATUS_SUCCESS)
1987 {
1988 /* couldn't find it at all, fail */
1989 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1990 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1991 return status;
1992 }
1993
1994 pos += strlen( unix_name + pos );
1995 name = next;
1996 }
1997
1998 WARN( "%s -> %s required a case-insensitive search\n",
1999 debugstr_us(nameW), debugstr_a(unix_name) );
2000
2001 done:
2002 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
2003 unix_name_ret->Buffer = unix_name;
2004 unix_name_ret->Length = strlen(unix_name);
2005 unix_name_ret->MaximumLength = unix_len;
2006 return status;
2007 }
2008
2009
2010 /******************************************************************
2011 * RtlDoesFileExists_U (NTDLL.@)
2012 */
2013 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
2014 {
2015 UNICODE_STRING nt_name;
2016 FILE_BASIC_INFORMATION basic_info;
2017 OBJECT_ATTRIBUTES attr;
2018 BOOLEAN ret;
2019
2020 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
2021
2022 attr.Length = sizeof(attr);
2023 attr.RootDirectory = 0;
2024 attr.ObjectName = &nt_name;
2025 attr.Attributes = OBJ_CASE_INSENSITIVE;
2026 attr.SecurityDescriptor = NULL;
2027 attr.SecurityQualityOfService = NULL;
2028
2029 ret = NtQueryAttributesFile(&attr, &basic_info) == STATUS_SUCCESS;
2030
2031 RtlFreeUnicodeString( &nt_name );
2032 return ret;
2033 }
2034
2035
2036 /***********************************************************************
2037 * DIR_unmount_device
2038 *
2039 * Unmount the specified device.
2040 */
2041 NTSTATUS DIR_unmount_device( HANDLE handle )
2042 {
2043 NTSTATUS status;
2044 int unix_fd, needs_close;
2045
2046 if (!(status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL, NULL )))
2047 {
2048 struct stat st;
2049 char *mount_point = NULL;
2050
2051 if (fstat( unix_fd, &st ) == -1 || !is_valid_mounted_device( &st ))
2052 status = STATUS_INVALID_PARAMETER;
2053 else
2054 {
2055 if ((mount_point = get_device_mount_point( st.st_rdev )))
2056 {
2057 #ifdef __APPLE__
2058 static const char umount[] = "diskutil unmount >/dev/null 2>&1 ";
2059 #else
2060 static const char umount[] = "umount >/dev/null 2>&1 ";
2061 #endif
2062 char *cmd = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mount_point)+sizeof(umount));
2063 if (cmd)
2064 {
2065 strcpy( cmd, umount );
2066 strcat( cmd, mount_point );
2067 system( cmd );
2068 RtlFreeHeap( GetProcessHeap(), 0, cmd );
2069 #ifdef linux
2070 /* umount will fail to release the loop device since we still have
2071 a handle to it, so we release it here */
2072 if (major(st.st_rdev) == LOOP_MAJOR) ioctl( unix_fd, 0x4c01 /*LOOP_CLR_FD*/, 0 );
2073 #endif
2074 }
2075 RtlFreeHeap( GetProcessHeap(), 0, mount_point );
2076 }
2077 }
2078 if (needs_close) close( unix_fd );
2079 }
2080 return status;
2081 }
2082
2083
2084 /******************************************************************************
2085 * DIR_get_unix_cwd
2086 *
2087 * Retrieve the Unix name of the current directory; helper for wine_unix_to_nt_file_name.
2088 * Returned value must be freed by caller.
2089 */
2090 NTSTATUS DIR_get_unix_cwd( char **cwd )
2091 {
2092 int old_cwd, unix_fd, needs_close;
2093 CURDIR *curdir;
2094 HANDLE handle;
2095 NTSTATUS status;
2096
2097 RtlAcquirePebLock();
2098
2099 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
2100 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
2101 else
2102 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
2103
2104 if (!(handle = curdir->Handle))
2105 {
2106 UNICODE_STRING dirW;
2107 OBJECT_ATTRIBUTES attr;
2108 IO_STATUS_BLOCK io;
2109
2110 if (!RtlDosPathNameToNtPathName_U( curdir->DosPath.Buffer, &dirW, NULL, NULL ))
2111 {
2112 status = STATUS_OBJECT_NAME_INVALID;
2113 goto done;
2114 }
2115 attr.Length = sizeof(attr);
2116 attr.RootDirectory = 0;
2117 attr.Attributes = OBJ_CASE_INSENSITIVE;
2118 attr.ObjectName = &dirW;
2119 attr.SecurityDescriptor = NULL;
2120 attr.SecurityQualityOfService = NULL;
2121
2122 status = NtOpenFile( &handle, 0, &attr, &io, 0,
2123 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
2124 RtlFreeUnicodeString( &dirW );
2125 if (status != STATUS_SUCCESS) goto done;
2126 }
2127
2128 if ((status = server_get_unix_fd( handle, 0, &unix_fd, &needs_close, NULL, NULL )) == STATUS_SUCCESS)
2129 {
2130 RtlEnterCriticalSection( &dir_section );
2131
2132 if ((old_cwd = open(".", O_RDONLY)) != -1 && fchdir( unix_fd ) != -1)
2133 {
2134 unsigned int size = 512;
2135
2136 for (;;)
2137 {
2138 if (!(*cwd = RtlAllocateHeap( GetProcessHeap(), 0, size )))
2139 {
2140 status = STATUS_NO_MEMORY;
2141 break;
2142 }
2143 if (getcwd( *cwd, size )) break;
2144 RtlFreeHeap( GetProcessHeap(), 0, *cwd );
2145 if (errno != ERANGE)
2146 {
2147 status = STATUS_OBJECT_PATH_INVALID;
2148 break;
2149 }
2150 size *= 2;
2151 }
2152 if (fchdir( old_cwd ) == -1) chdir( "/" );
2153 }
2154 else status = FILE_GetNtStatus();
2155
2156 RtlLeaveCriticalSection( &dir_section );
2157 if (needs_close) close( unix_fd );
2158 }
2159 if (!curdir->Handle) NtClose( handle );
2160
2161 done:
2162 RtlReleasePebLock();
2163 return status;
2164 }
2165
2166 struct read_changes_info
2167 {
2168 HANDLE FileHandle;
2169 PVOID Buffer;
2170 ULONG BufferSize;
2171 PIO_APC_ROUTINE apc;
2172 void *apc_arg;
2173 };
2174
2175 /* callback for ioctl user APC */
2176 static void WINAPI read_changes_user_apc( void *arg, IO_STATUS_BLOCK *io, ULONG reserved )
2177 {
2178 struct read_changes_info *info = arg;
2179 if (info->apc) info->apc( info->apc_arg, io, reserved );
2180 RtlFreeHeap( GetProcessHeap(), 0, info );
2181 }
2182
2183 static NTSTATUS read_changes_apc( void *user, PIO_STATUS_BLOCK iosb, NTSTATUS status )
2184 {
2185 struct read_changes_info *info = user;
2186 char path[PATH_MAX];
2187 NTSTATUS ret = STATUS_SUCCESS;
2188 int len, action, i;
2189
2190 SERVER_START_REQ( read_change )
2191 {
2192 req->handle = info->FileHandle;
2193 wine_server_set_reply( req, path, PATH_MAX );
2194 ret = wine_server_call( req );
2195 action = reply->action;
2196 len = wine_server_reply_size( reply );
2197 }
2198 SERVER_END_REQ;
2199
2200 if (ret == STATUS_SUCCESS && info->Buffer &&
2201 (info->BufferSize > (sizeof (FILE_NOTIFY_INFORMATION) + len*sizeof(WCHAR))))
2202 {
2203 PFILE_NOTIFY_INFORMATION pfni;
2204
2205 pfni = (PFILE_NOTIFY_INFORMATION) info->Buffer;
2206
2207 /* convert to an NT style path */
2208 for (i=0; i<len; i++)
2209 if (path[i] == '/')
2210 path[i] = '\\';
2211
2212 len = ntdll_umbstowcs( 0, path, len, pfni->FileName,
2213 info->BufferSize - sizeof (*pfni) );
2214
2215 pfni->NextEntryOffset = 0;
2216 pfni->Action = action;
2217 pfni->FileNameLength = len * sizeof (WCHAR);
2218 pfni->FileName[len] = 0;
2219 len = sizeof (*pfni) - sizeof (DWORD) + pfni->FileNameLength;
2220 }
2221 else
2222 {
2223 ret = STATUS_NOTIFY_ENUM_DIR;
2224 len = 0;
2225 }
2226
2227 iosb->u.Status = ret;
2228 iosb->Information = len;
2229 return ret;
2230 }
2231
2232 #define FILE_NOTIFY_ALL ( \
2233 FILE_NOTIFY_CHANGE_FILE_NAME | \
2234 FILE_NOTIFY_CHANGE_DIR_NAME | \
2235 FILE_NOTIFY_CHANGE_ATTRIBUTES | \
2236 FILE_NOTIFY_CHANGE_SIZE | \
2237 FILE_NOTIFY_CHANGE_LAST_WRITE | \
2238 FILE_NOTIFY_CHANGE_LAST_ACCESS | \
2239 FILE_NOTIFY_CHANGE_CREATION | \
2240 FILE_NOTIFY_CHANGE_SECURITY )
2241
2242 /******************************************************************************
2243 * NtNotifyChangeDirectoryFile [NTDLL.@]
2244 */
2245 NTSTATUS WINAPI
2246 NtNotifyChangeDirectoryFile( HANDLE FileHandle, HANDLE Event,
2247 PIO_APC_ROUTINE ApcRoutine, PVOID ApcContext,
2248 PIO_STATUS_BLOCK IoStatusBlock, PVOID Buffer,
2249 ULONG BufferSize, ULONG CompletionFilter, BOOLEAN WatchTree )
2250 {
2251 struct read_changes_info *info;
2252 NTSTATUS status;
2253
2254 TRACE("%p %p %p %p %p %p %u %u %d\n",
2255 FileHandle, Event, ApcRoutine, ApcContext, IoStatusBlock,
2256 Buffer, BufferSize, CompletionFilter, WatchTree );
2257
2258 if (!IoStatusBlock)
2259 return STATUS_ACCESS_VIOLATION;
2260
2261 if (CompletionFilter == 0 || (CompletionFilter & ~FILE_NOTIFY_ALL))
2262 return STATUS_INVALID_PARAMETER;
2263
2264 info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof *info );
2265 if (!info)
2266 return STATUS_NO_MEMORY;
2267
2268 info->FileHandle = FileHandle;
2269 info->Buffer = Buffer;
2270 info->BufferSize = BufferSize;
2271 info->apc = ApcRoutine;
2272 info->apc_arg = ApcContext;
2273
2274 SERVER_START_REQ( read_directory_changes )
2275 {
2276 req->handle = FileHandle;
2277 req->filter = CompletionFilter;
2278 req->want_data = (Buffer != NULL);
2279 req->subtree = WatchTree;
2280 req->async.callback = read_changes_apc;
2281 req->async.iosb = IoStatusBlock;
2282 req->async.arg = info;
2283 req->async.apc = read_changes_user_apc;
2284 req->async.event = Event;
2285 status = wine_server_call( req );
2286 }
2287 SERVER_END_REQ;
2288
2289 if (status != STATUS_PENDING)
2290 RtlFreeHeap( GetProcessHeap(), 0, info );
2291
2292 return status;
2293 }
useful hacks and other patches not (yet) suitable for mainline