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Implement NtAccessCheck.
[wine/gsoc-2012-control.git] / dlls / ntdll / directory.c
blobf3476573c3be5bae28a7bae9e8986a18c8ccaaf4
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #ifdef HAVE_MNTENT_H
35 #include <mntent.h>
36 #endif
37 #ifdef HAVE_SYS_STAT_H
38 # include <sys/stat.h>
39 #endif
40 #ifdef HAVE_SYS_IOCTL_H
41 #include <sys/ioctl.h>
42 #endif
43 #ifdef HAVE_LINUX_IOCTL_H
44 #include <linux/ioctl.h>
45 #endif
46 #ifdef HAVE_SYS_PARAM_H
47 #include <sys/param.h>
48 #endif
49 #ifdef HAVE_SYS_MOUNT_H
50 #include <sys/mount.h>
51 #endif
52 #include <time.h>
53 #ifdef HAVE_UNISTD_H
54 # include <unistd.h>
55 #endif
56
57 #define NONAMELESSUNION
58 #define NONAMELESSSTRUCT
59 #include "windef.h"
60 #include "winbase.h"
61 #include "winnt.h"
62 #include "winreg.h"
63 #include "ntstatus.h"
64 #include "winternl.h"
65 #include "ntdll_misc.h"
66 #include "wine/unicode.h"
67 #include "wine/server.h"
68 #include "wine/library.h"
69 #include "wine/debug.h"
70
71 WINE_DEFAULT_DEBUG_CHANNEL(file);
72
73 /* just in case... */
74 #undef VFAT_IOCTL_READDIR_BOTH
75 #undef USE_GETDENTS
76
77 #ifdef linux
78
79 /* We want the real kernel dirent structure, not the libc one */
80 typedef struct
81 {
82 long d_ino;
83 long d_off;
84 unsigned short d_reclen;
85 char d_name[256];
86 } KERNEL_DIRENT;
87
88 /* Define the VFAT ioctl to get both short and long file names */
89 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
90
91 #ifndef O_DIRECTORY
92 # define O_DIRECTORY 0200000 /* must be directory */
93 #endif
94
95 #ifdef __i386__
96
97 typedef struct
98 {
99 ULONG64 d_ino;
100 LONG64 d_off;
101 unsigned short d_reclen;
102 unsigned char d_type;
103 char d_name[256];
104 } KERNEL_DIRENT64;
105
106 static inline int getdents64( int fd, KERNEL_DIRENT64 *de, unsigned int size )
107 {
108 int ret;
109 __asm__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
110 : "=a" (ret)
111 : "0" (220 /*NR_getdents64*/), "r" (fd), "c" (de), "d" (size)
112 : "memory" );
113 if (ret < 0)
114 {
115 errno = -ret;
116 ret = -1;
117 }
118 return ret;
119 }
120 #define USE_GETDENTS
121
122 #endif /* i386 */
123
124 #endif /* linux */
125
126 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
127 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
128
129 #define INVALID_NT_CHARS '*','?','<','>','|','"'
130 #define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
131
132 #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
133
134 static int show_dir_symlinks = -1;
135 static int show_dot_files;
136
137 /* at some point we may want to allow Winelib apps to set this */
138 static const int is_case_sensitive = FALSE;
139
140 static CRITICAL_SECTION dir_section;
141 static CRITICAL_SECTION_DEBUG critsect_debug =
142 {
143 0, 0, &dir_section,
144 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
145 0, 0, { 0, (DWORD)(__FILE__ ": dir_section") }
146 };
147 static CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
148
149
150 /* check if a given Unicode char is OK in a DOS short name */
151 static inline BOOL is_invalid_dos_char( WCHAR ch )
152 {
153 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
154 if (ch > 0x7f) return TRUE;
155 return strchrW( invalid_chars, ch ) != NULL;
156 }
157
158 /***********************************************************************
159 * get_default_com_device
160 *
161 * Return the default device to use for serial ports.
162 */
163 static char *get_default_com_device( int num )
164 {
165 char *ret = NULL;
166
167 if (!num || num > 9) return ret;
168 #ifdef linux
169 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
170 if (ret)
171 {
172 strcpy( ret, "/dev/ttyS0" );
173 ret[strlen(ret) - 1] = '0' + num - 1;
174 }
175 #else
176 FIXME( "no known default for device com%d\n", num );
177 #endif
178 return ret;
179 }
180
181
182 /***********************************************************************
183 * get_default_lpt_device
184 *
185 * Return the default device to use for parallel ports.
186 */
187 static char *get_default_lpt_device( int num )
188 {
189 char *ret = NULL;
190
191 if (!num || num > 9) return ret;
192 #ifdef linux
193 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
194 if (ret)
195 {
196 strcpy( ret, "/dev/lp0" );
197 ret[strlen(ret) - 1] = '0' + num - 1;
198 }
199 #else
200 FIXME( "no known default for device lpt%d\n", num );
201 #endif
202 return ret;
203 }
204
205
206 /***********************************************************************
207 * parse_mount_entries
208 *
209 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
210 */
211
212 #ifdef sun
213 #include <sys/vfstab.h>
214 static char *parse_vfstab_entries( FILE *f, dev_t dev, ino_t ino)
215 {
216
217 struct vfstab vfs_entry;
218 struct vfstab *entry=&vfs_entry;
219 struct stat st;
220 char *device;
221
222 while (! getvfsent( f, entry ))
223 {
224 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
225 if (!strcmp( entry->vfs_fstype, "nfs" ) ||
226 !strcmp( entry->vfs_fstype, "smbfs" ) ||
227 !strcmp( entry->vfs_fstype, "ncpfs" )) continue;
228
229 if (stat( entry->vfs_mountp, &st ) == -1) continue;
230 if (st.st_dev != dev || st.st_ino != ino) continue;
231 if (!strcmp( entry->vfs_fstype, "fd" ))
232 {
233 if ((device = strstr( entry->vfs_mntopts, "dev=" )))
234 {
235 char *p = strchr( device + 4, ',' );
236 if (p) *p = 0;
237 return device + 4;
238 }
239 }
240 else
241 return entry->vfs_special;
242 }
243 return NULL;
244 }
245 #endif
246
247 #ifdef linux
248 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
249 {
250 struct mntent *entry;
251 struct stat st;
252 char *device;
253
254 while ((entry = getmntent( f )))
255 {
256 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
257 if (!strcmp( entry->mnt_type, "nfs" ) ||
258 !strcmp( entry->mnt_type, "smbfs" ) ||
259 !strcmp( entry->mnt_type, "ncpfs" )) continue;
260
261 if (stat( entry->mnt_dir, &st ) == -1) continue;
262 if (st.st_dev != dev || st.st_ino != ino) continue;
263 if (!strcmp( entry->mnt_type, "supermount" ))
264 {
265 if ((device = strstr( entry->mnt_opts, "dev=" )))
266 {
267 char *p = strchr( device + 4, ',' );
268 if (p) *p = 0;
269 return device + 4;
270 }
271 }
272 else
273 return entry->mnt_fsname;
274 }
275 return NULL;
276 }
277 #endif
278
279 #ifdef __FreeBSD__
280 #include <fstab.h>
281 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
282 {
283 struct fstab *entry;
284 struct stat st;
285
286 while ((entry = getfsent()))
287 {
288 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
289 if (!strcmp( entry->fs_vfstype, "nfs" ) ||
290 !strcmp( entry->fs_vfstype, "smbfs" ) ||
291 !strcmp( entry->fs_vfstype, "ncpfs" )) continue;
292
293 if (stat( entry->fs_file, &st ) == -1) continue;
294 if (st.st_dev != dev || st.st_ino != ino) continue;
295 return entry->fs_spec;
296 }
297 return NULL;
298 }
299 #endif
300
301 #ifdef sun
302 #include <sys/mnttab.h>
303 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
304 {
305
306 volatile struct mnttab mntentry;
307 struct mnttab *entry=&mntentry;
308 struct stat st;
309 char *device;
310
311
312 while (( ! getmntent( f , entry) ))
313 {
314 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
315 if (!strcmp( entry->mnt_fstype, "nfs" ) ||
316 !strcmp( entry->mnt_fstype, "smbfs" ) ||
317 !strcmp( entry->mnt_fstype, "ncpfs" )) continue;
318
319 if (stat( entry->mnt_mountp, &st ) == -1) continue;
320 if (st.st_dev != dev || st.st_ino != ino) continue;
321 if (!strcmp( entry->mnt_fstype, "fd" ))
322 {
323 if ((device = strstr( entry->mnt_mntopts, "dev=" )))
324 {
325 char *p = strchr( device + 4, ',' );
326 if (p) *p = 0;
327 return device + 4;
328 }
329 }
330 else
331 return entry->mnt_special;
332 }
333 return NULL;
334 }
335 #endif
336
337 /***********************************************************************
338 * get_default_drive_device
339 *
340 * Return the default device to use for a given drive mount point.
341 */
342 static char *get_default_drive_device( const char *root )
343 {
344 char *ret = NULL;
345
346 #ifdef linux
347 FILE *f;
348 char *device = NULL;
349 int fd, res = -1;
350 struct stat st;
351
352 /* try to open it first to force it to get mounted */
353 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
354 {
355 res = fstat( fd, &st );
356 close( fd );
357 }
358 /* now try normal stat just in case */
359 if (res == -1) res = stat( root, &st );
360 if (res == -1) return NULL;
361
362 RtlEnterCriticalSection( &dir_section );
363
364 if ((f = fopen( "/etc/mtab", "r" )))
365 {
366 device = parse_mount_entries( f, st.st_dev, st.st_ino );
367 endmntent( f );
368 }
369 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
370 if (!device && (f = fopen( "/etc/fstab", "r" )))
371 {
372 device = parse_mount_entries( f, st.st_dev, st.st_ino );
373 endmntent( f );
374 }
375 if (device)
376 {
377 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
378 if (ret) strcpy( ret, device );
379 }
380 RtlLeaveCriticalSection( &dir_section );
381
382 #elif defined( __FreeBSD__ )
383 char *device = NULL;
384 int fd, res = -1;
385 struct stat st;
386
387 /* try to open it first to force it to get mounted */
388 if ((fd = open( root, O_RDONLY )) != -1)
389 {
390 res = fstat( fd, &st );
391 close( fd );
392 }
393 /* now try normal stat just in case */
394 if (res == -1) res = stat( root, &st );
395 if (res == -1) return NULL;
396
397 RtlEnterCriticalSection( &dir_section );
398
399 /* The FreeBSD parse_mount_entries doesn't require a file argument, so just
400 * pass NULL. Leave the argument in for symmetry.
401 */
402 device = parse_mount_entries( NULL, st.st_dev, st.st_ino );
403 if (device)
404 {
405 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
406 if (ret) strcpy( ret, device );
407 }
408 RtlLeaveCriticalSection( &dir_section );
409
410 #elif defined( sun )
411 FILE *f;
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 if ((f = fopen( "/etc/mnttab", "r" )))
429 {
430 device = parse_mount_entries( f, st.st_dev, st.st_ino);
431 fclose( f );
432 }
433 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
434 if (!device && (f = fopen( "/etc/vfstab", "r" )))
435 {
436 device = parse_vfstab_entries( f, st.st_dev, st.st_ino );
437 fclose( f );
438 }
439 if (device)
440 {
441 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
442 if (ret) strcpy( ret, device );
443 }
444 RtlLeaveCriticalSection( &dir_section );
445
446 #elif defined(__APPLE__)
447 struct statfs *mntStat;
448 struct stat st;
449 int i;
450 int mntSize;
451 dev_t dev;
452 ino_t ino;
453 static const char path_bsd_device[] = "/dev/disk";
454 int res;
455
456 res = stat( root, &st );
457 if (res == -1) return NULL;
458
459 dev = st.st_dev;
460 ino = st.st_ino;
461
462 RtlEnterCriticalSection( &dir_section );
463
464 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
465
466 for (i = 0; i < mntSize && !ret; i++)
467 {
468 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
469 if (st.st_dev != dev || st.st_ino != ino) continue;
470
471 /* FIXME add support for mounted network drive */
472 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
473 {
474 /* set return value to the corresponding raw BSD node */
475 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
476 if (ret)
477 {
478 strcpy(ret, "/dev/r");
479 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
480 }
481 }
482 }
483 RtlLeaveCriticalSection( &dir_section );
484 #else
485 static int warned;
486 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
487 #endif
488 return ret;
489 }
490
491
492 /***********************************************************************
493 * init_options
494 *
495 * Initialize the show_dir_symlinks and show_dot_files options.
496 */
497 static void init_options(void)
498 {
499 static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
500 'S','o','f','t','w','a','r','e','\\',
501 'W','i','n','e','\\','W','i','n','e','\\',
502 'C','o','n','f','i','g','\\','W','i','n','e',0};
503 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
504 static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
505 char tmp[80];
506 HKEY hkey;
507 DWORD dummy;
508 OBJECT_ATTRIBUTES attr;
509 UNICODE_STRING nameW;
510
511 show_dot_files = show_dir_symlinks = 0;
512
513 attr.Length = sizeof(attr);
514 attr.RootDirectory = 0;
515 attr.ObjectName = &nameW;
516 attr.Attributes = 0;
517 attr.SecurityDescriptor = NULL;
518 attr.SecurityQualityOfService = NULL;
519 RtlInitUnicodeString( &nameW, WineW );
520
521 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
522 {
523 RtlInitUnicodeString( &nameW, ShowDotFilesW );
524 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
525 {
526 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
527 show_dot_files = IS_OPTION_TRUE( str[0] );
528 }
529 RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
530 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
531 {
532 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
533 show_dir_symlinks = IS_OPTION_TRUE( str[0] );
534 }
535 NtClose( hkey );
536 }
537 }
538
539
540 /***********************************************************************
541 * DIR_is_hidden_file
542 *
543 * Check if the specified file should be hidden based on its name and the show dot files option.
544 */
545 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
546 {
547 WCHAR *p, *end;
548
549 if (show_dir_symlinks == -1) init_options();
550 if (show_dot_files) return FALSE;
551
552 end = p = name->Buffer + name->Length/sizeof(WCHAR);
553 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
554 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
555 if (p == end || *p != '.') return FALSE;
556 /* make sure it isn't '.' or '..' */
557 if (p + 1 == end) return FALSE;
558 if (p[1] == '.' && p + 2 == end) return FALSE;
559 return TRUE;
560 }
561
562
563 /***********************************************************************
564 * hash_short_file_name
565 *
566 * Transform a Unix file name into a hashed DOS name. If the name is a valid
567 * DOS name, it is converted to upper-case; otherwise it is replaced by a
568 * hashed version that fits in 8.3 format.
569 * 'buffer' must be at least 12 characters long.
570 * Returns length of short name in bytes; short name is NOT null-terminated.
571 */
572 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
573 {
574 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
575
576 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
577 LPWSTR dst;
578 unsigned short hash;
579 int i;
580
581 /* Compute the hash code of the file name */
582 /* If you know something about hash functions, feel free to */
583 /* insert a better algorithm here... */
584 if (!is_case_sensitive)
585 {
586 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
587 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
588 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
589 }
590 else
591 {
592 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
593 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
594 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
595 }
596
597 /* Find last dot for start of the extension */
598 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
599
600 /* Copy first 4 chars, replacing invalid chars with '_' */
601 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
602 {
603 if (p == end || p == ext) break;
604 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
605 }
606 /* Pad to 5 chars with '~' */
607 while (i-- >= 0) *dst++ = '~';
608
609 /* Insert hash code converted to 3 ASCII chars */
610 *dst++ = hash_chars[(hash >> 10) & 0x1f];
611 *dst++ = hash_chars[(hash >> 5) & 0x1f];
612 *dst++ = hash_chars[hash & 0x1f];
613
614 /* Copy the first 3 chars of the extension (if any) */
615 if (ext)
616 {
617 *dst++ = '.';
618 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
619 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
620 }
621 return dst - buffer;
622 }
623
624
625 /***********************************************************************
626 * match_filename
627 *
628 * Check a long file name against a mask.
629 *
630 * Tests (done in W95 DOS shell - case insensitive):
631 * *.txt test1.test.txt *
632 * *st1* test1.txt *
633 * *.t??????.t* test1.ta.tornado.txt *
634 * *tornado* test1.ta.tornado.txt *
635 * t*t test1.ta.tornado.txt *
636 * ?est* test1.txt *
637 * ?est??? test1.txt -
638 * *test1.txt* test1.txt *
639 * h?l?o*t.dat hellothisisatest.dat *
640 */
641 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
642 {
643 int mismatch;
644 const WCHAR *name = name_str->Buffer;
645 const WCHAR *mask = mask_str->Buffer;
646 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
647 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
648 const WCHAR *lastjoker = NULL;
649 const WCHAR *next_to_retry = NULL;
650
651 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
652
653 while (name < name_end && mask < mask_end)
654 {
655 switch(*mask)
656 {
657 case '*':
658 mask++;
659 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
660 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
661 lastjoker = mask;
662
663 /* skip to the next match after the joker(s) */
664 if (is_case_sensitive)
665 while (name < name_end && (*name != *mask)) name++;
666 else
667 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
668 next_to_retry = name;
669 break;
670 case '?':
671 mask++;
672 name++;
673 break;
674 default:
675 if (is_case_sensitive) mismatch = (*mask != *name);
676 else mismatch = (toupperW(*mask) != toupperW(*name));
677
678 if (!mismatch)
679 {
680 mask++;
681 name++;
682 if (mask == mask_end)
683 {
684 if (name == name_end) return TRUE;
685 if (lastjoker) mask = lastjoker;
686 }
687 }
688 else /* mismatch ! */
689 {
690 if (lastjoker) /* we had an '*', so we can try unlimitedly */
691 {
692 mask = lastjoker;
693
694 /* this scan sequence was a mismatch, so restart
695 * 1 char after the first char we checked last time */
696 next_to_retry++;
697 name = next_to_retry;
698 }
699 else return FALSE; /* bad luck */
700 }
701 break;
702 }
703 }
704 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
705 mask++; /* Ignore trailing '.' or '*' in mask */
706 return (name == name_end && mask == mask_end);
707 }
708
709
710 /***********************************************************************
711 * append_entry
712 *
713 * helper for NtQueryDirectoryFile
714 */
715 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
716 const char *long_name, const char *short_name,
717 const UNICODE_STRING *mask )
718 {
719 FILE_BOTH_DIR_INFORMATION *info;
720 int i, long_len, short_len, total_len;
721 struct stat st;
722 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
723 WCHAR short_nameW[12];
724 UNICODE_STRING str;
725
726 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
727 if (long_len == -1) return NULL;
728
729 str.Buffer = long_nameW;
730 str.Length = long_len * sizeof(WCHAR);
731 str.MaximumLength = sizeof(long_nameW);
732
733 if (short_name)
734 {
735 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
736 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
737 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
738 }
739 else /* generate a short name if necessary */
740 {
741 BOOLEAN spaces;
742
743 short_len = 0;
744 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
745 short_len = hash_short_file_name( &str, short_nameW );
746 }
747
748 TRACE( "long %s short %s mask %s\n",
749 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
750
751 if (mask && !match_filename( &str, mask ))
752 {
753 if (!short_len) return NULL; /* no short name to match */
754 str.Buffer = short_nameW;
755 str.Length = short_len * sizeof(WCHAR);
756 str.MaximumLength = sizeof(short_nameW);
757 if (!match_filename( &str, mask )) return NULL;
758 }
759
760 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
761 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
762
763 if (*pos + total_len > max_length) total_len = max_length - *pos;
764
765 if (lstat( long_name, &st ) == -1) return NULL;
766 if (S_ISLNK( st.st_mode ))
767 {
768 if (stat( long_name, &st ) == -1) return NULL;
769 if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
770 }
771
772 info->NextEntryOffset = total_len;
773 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
774
775 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
776 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
777 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
778 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
779
780 if (S_ISDIR(st.st_mode))
781 {
782 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
783 info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
784 }
785 else
786 {
787 info->EndOfFile.QuadPart = st.st_size;
788 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
789 info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
790 }
791
792 if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
793 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
794
795 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
796 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
797
798 info->EaSize = 0; /* FIXME */
799 info->ShortNameLength = short_len * sizeof(WCHAR);
800 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
801 info->FileNameLength = long_len * sizeof(WCHAR);
802 memcpy( info->FileName, long_nameW,
803 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
804
805 *pos += total_len;
806 return info;
807 }
808
809
810 /***********************************************************************
811 * read_directory_vfat
812 *
813 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
814 */
815 #ifdef VFAT_IOCTL_READDIR_BOTH
816 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
817 BOOLEAN single_entry, const UNICODE_STRING *mask,
818 BOOLEAN restart_scan )
819
820 {
821 int res;
822 KERNEL_DIRENT de[2];
823 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
824 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
825
826 io->u.Status = STATUS_SUCCESS;
827
828 if (restart_scan) lseek( fd, 0, SEEK_SET );
829
830 if (length < max_dir_info_size) /* we may have to return a partial entry here */
831 {
832 off_t old_pos = lseek( fd, 0, SEEK_CUR );
833
834 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
835 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
836
837 while (res != -1)
838 {
839 if (!de[0].d_reclen) break;
840 if (de[1].d_name[0])
841 info = append_entry( buffer, &io->Information, length,
842 de[1].d_name, de[0].d_name, mask );
843 else
844 info = append_entry( buffer, &io->Information, length,
845 de[0].d_name, NULL, mask );
846 if (info)
847 {
848 last_info = info;
849 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
850 {
851 io->u.Status = STATUS_BUFFER_OVERFLOW;
852 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
853 }
854 break;
855 }
856 old_pos = lseek( fd, 0, SEEK_CUR );
857 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
858 }
859 }
860 else /* we'll only return full entries, no need to worry about overflow */
861 {
862 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
863 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
864
865 while (res != -1)
866 {
867 if (!de[0].d_reclen) break;
868 if (de[1].d_name[0])
869 info = append_entry( buffer, &io->Information, length,
870 de[1].d_name, de[0].d_name, mask );
871 else
872 info = append_entry( buffer, &io->Information, length,
873 de[0].d_name, NULL, mask );
874 if (info)
875 {
876 last_info = info;
877 if (single_entry) break;
878 /* check if we still have enough space for the largest possible entry */
879 if (io->Information + max_dir_info_size > length) break;
880 }
881 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
882 }
883 }
884
885 if (last_info) last_info->NextEntryOffset = 0;
886 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
887 return 0;
888 }
889 #endif /* VFAT_IOCTL_READDIR_BOTH */
890
891
892 /***********************************************************************
893 * read_directory_getdents
894 *
895 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
896 */
897 #ifdef USE_GETDENTS
898 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
899 BOOLEAN single_entry, const UNICODE_STRING *mask,
900 BOOLEAN restart_scan )
901 {
902 off_t old_pos = 0;
903 size_t size = length;
904 int res;
905 char local_buffer[8192];
906 KERNEL_DIRENT64 *data, *de;
907 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
908 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
909
910 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
911 {
912 size = sizeof(local_buffer);
913 data = (KERNEL_DIRENT64 *)local_buffer;
914 }
915
916 if (restart_scan) lseek( fd, 0, SEEK_SET );
917 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
918 {
919 old_pos = lseek( fd, 0, SEEK_CUR );
920 if (old_pos == -1 && errno == ENOENT)
921 {
922 io->u.Status = STATUS_NO_MORE_FILES;
923 res = 0;
924 goto done;
925 }
926 }
927
928 io->u.Status = STATUS_SUCCESS;
929
930 res = getdents64( fd, data, size );
931 if (res == -1)
932 {
933 if (errno != ENOSYS)
934 {
935 io->u.Status = FILE_GetNtStatus();
936 res = 0;
937 }
938 goto done;
939 }
940
941 de = data;
942
943 while (res > 0)
944 {
945 res -= de->d_reclen;
946 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
947 if (info)
948 {
949 last_info = info;
950 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
951 {
952 io->u.Status = STATUS_BUFFER_OVERFLOW;
953 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
954 break;
955 }
956 /* check if we still have enough space for the largest possible entry */
957 if (single_entry || io->Information + max_dir_info_size > length)
958 {
959 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
960 break;
961 }
962 }
963 old_pos = de->d_off;
964 /* move on to the next entry */
965 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
966 else
967 {
968 res = getdents64( fd, data, size );
969 de = data;
970 }
971 }
972
973 if (last_info) last_info->NextEntryOffset = 0;
974 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
975 res = 0;
976 done:
977 if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
978 return res;
979 }
980 #endif /* USE_GETDENTS */
981
982
983 /***********************************************************************
984 * read_directory_readdir
985 *
986 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
987 */
988 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
989 BOOLEAN single_entry, const UNICODE_STRING *mask,
990 BOOLEAN restart_scan )
991 {
992 DIR *dir;
993 off_t i, old_pos = 0;
994 struct dirent *de;
995 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
996 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
997
998 if (!(dir = opendir( "." )))
999 {
1000 io->u.Status = FILE_GetNtStatus();
1001 return;
1002 }
1003
1004 if (!restart_scan)
1005 {
1006 old_pos = lseek( fd, 0, SEEK_CUR );
1007 /* skip the right number of entries */
1008 for (i = 0; i < old_pos; i++)
1009 {
1010 if (!readdir( dir ))
1011 {
1012 closedir( dir );
1013 io->u.Status = STATUS_NO_MORE_FILES;
1014 return;
1015 }
1016 }
1017 }
1018 io->u.Status = STATUS_SUCCESS;
1019
1020 while ((de = readdir( dir )))
1021 {
1022 old_pos++;
1023 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
1024 if (info)
1025 {
1026 last_info = info;
1027 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1028 {
1029 io->u.Status = STATUS_BUFFER_OVERFLOW;
1030 old_pos--; /* restore pos to previous entry */
1031 break;
1032 }
1033 if (single_entry) break;
1034 /* check if we still have enough space for the largest possible entry */
1035 if (io->Information + max_dir_info_size > length) break;
1036 }
1037 }
1038
1039 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
1040 closedir( dir );
1041
1042 if (last_info) last_info->NextEntryOffset = 0;
1043 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1044 }
1045
1046
1047 /******************************************************************************
1048 * NtQueryDirectoryFile [NTDLL.@]
1049 * ZwQueryDirectoryFile [NTDLL.@]
1050 */
1051 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
1052 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
1053 PIO_STATUS_BLOCK io,
1054 PVOID buffer, ULONG length,
1055 FILE_INFORMATION_CLASS info_class,
1056 BOOLEAN single_entry,
1057 PUNICODE_STRING mask,
1058 BOOLEAN restart_scan )
1059 {
1060 int cwd, fd;
1061
1062 TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
1063 handle, event, apc_routine, apc_context, io, buffer,
1064 length, info_class, single_entry, debugstr_us(mask),
1065 restart_scan);
1066
1067 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
1068
1069 if (event || apc_routine)
1070 {
1071 FIXME( "Unsupported yet option\n" );
1072 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1073 }
1074 if (info_class != FileBothDirectoryInformation)
1075 {
1076 FIXME( "Unsupported file info class %d\n", info_class );
1077 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1078 }
1079
1080 if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
1081 return io->u.Status;
1082
1083 io->Information = 0;
1084
1085 RtlEnterCriticalSection( &dir_section );
1086
1087 if (show_dir_symlinks == -1) init_options();
1088
1089 if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
1090 {
1091 #ifdef VFAT_IOCTL_READDIR_BOTH
1092 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
1093 #endif
1094 #ifdef USE_GETDENTS
1095 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
1096 #endif
1097 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
1098
1099 if (fchdir( cwd ) == -1) chdir( "/" );
1100 }
1101 else io->u.Status = FILE_GetNtStatus();
1102
1103 RtlLeaveCriticalSection( &dir_section );
1104
1105 wine_server_release_fd( handle, fd );
1106 if (cwd != -1) close( cwd );
1107 TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
1108 return io->u.Status;
1109 }
1110
1111
1112 /***********************************************************************
1113 * find_file_in_dir
1114 *
1115 * Find a file in a directory the hard way, by doing a case-insensitive search.
1116 * The file found is appended to unix_name at pos.
1117 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
1118 */
1119 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
1120 int check_case )
1121 {
1122 WCHAR buffer[MAX_DIR_ENTRY_LEN];
1123 UNICODE_STRING str;
1124 BOOLEAN spaces;
1125 DIR *dir;
1126 struct dirent *de;
1127 struct stat st;
1128 int ret, used_default, is_name_8_dot_3;
1129
1130 /* try a shortcut for this directory */
1131
1132 unix_name[pos++] = '/';
1133 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
1134 NULL, &used_default );
1135 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
1136 /* so it cannot match the file we are looking for */
1137 if (ret >= 0 && !used_default)
1138 {
1139 unix_name[pos + ret] = 0;
1140 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
1141 }
1142 if (check_case) goto not_found; /* we want an exact match */
1143
1144 if (pos > 1) unix_name[pos - 1] = 0;
1145 else unix_name[1] = 0; /* keep the initial slash */
1146
1147 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
1148
1149 str.Buffer = (WCHAR *)name;
1150 str.Length = length * sizeof(WCHAR);
1151 str.MaximumLength = str.Length;
1152 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
1153
1154 /* now look for it through the directory */
1155
1156 #ifdef VFAT_IOCTL_READDIR_BOTH
1157 if (is_name_8_dot_3)
1158 {
1159 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
1160 if (fd != -1)
1161 {
1162 KERNEL_DIRENT de[2];
1163
1164 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
1165 {
1166 unix_name[pos - 1] = '/';
1167 for (;;)
1168 {
1169 if (!de[0].d_reclen) break;
1170
1171 if (de[1].d_name[0])
1172 {
1173 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1174 buffer, MAX_DIR_ENTRY_LEN );
1175 if (ret == length && !memicmpW( buffer, name, length))
1176 {
1177 strcpy( unix_name + pos, de[1].d_name );
1178 close( fd );
1179 return STATUS_SUCCESS;
1180 }
1181 }
1182 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1183 buffer, MAX_DIR_ENTRY_LEN );
1184 if (ret == length && !memicmpW( buffer, name, length))
1185 {
1186 strcpy( unix_name + pos,
1187 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1188 close( fd );
1189 return STATUS_SUCCESS;
1190 }
1191 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1192 {
1193 close( fd );
1194 goto not_found;
1195 }
1196 }
1197 }
1198 close( fd );
1199 }
1200 /* fall through to normal handling */
1201 }
1202 #endif /* VFAT_IOCTL_READDIR_BOTH */
1203
1204 if (!(dir = opendir( unix_name )))
1205 {
1206 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1207 else return FILE_GetNtStatus();
1208 }
1209 unix_name[pos - 1] = '/';
1210 str.Buffer = buffer;
1211 str.MaximumLength = sizeof(buffer);
1212 while ((de = readdir( dir )))
1213 {
1214 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1215 if (ret == length && !memicmpW( buffer, name, length ))
1216 {
1217 strcpy( unix_name + pos, de->d_name );
1218 closedir( dir );
1219 return STATUS_SUCCESS;
1220 }
1221
1222 if (!is_name_8_dot_3) continue;
1223
1224 str.Length = ret * sizeof(WCHAR);
1225 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1226 {
1227 WCHAR short_nameW[12];
1228 ret = hash_short_file_name( &str, short_nameW );
1229 if (ret == length && !memicmpW( short_nameW, name, length ))
1230 {
1231 strcpy( unix_name + pos, de->d_name );
1232 closedir( dir );
1233 return STATUS_SUCCESS;
1234 }
1235 }
1236 }
1237 closedir( dir );
1238 goto not_found; /* avoid warning */
1239
1240 not_found:
1241 unix_name[pos - 1] = 0;
1242 return STATUS_OBJECT_PATH_NOT_FOUND;
1243 }
1244
1245
1246 /******************************************************************************
1247 * get_dos_device
1248 *
1249 * Get the Unix path of a DOS device.
1250 */
1251 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1252 {
1253 const char *config_dir = wine_get_config_dir();
1254 struct stat st;
1255 char *unix_name, *new_name, *dev;
1256 unsigned int i;
1257 int unix_len;
1258
1259 /* make sure the device name is ASCII */
1260 for (i = 0; i < name_len; i++)
1261 if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
1262
1263 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1264
1265 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1266 return STATUS_NO_MEMORY;
1267
1268 strcpy( unix_name, config_dir );
1269 strcat( unix_name, "/dosdevices/" );
1270 dev = unix_name + strlen(unix_name);
1271
1272 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1273 dev[i] = 0;
1274
1275 /* special case for drive devices */
1276 if (name_len == 2 && dev[1] == ':')
1277 {
1278 dev[i++] = ':';
1279 dev[i] = 0;
1280 }
1281
1282 for (;;)
1283 {
1284 if (!stat( unix_name, &st ))
1285 {
1286 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1287 unix_name_ret->Buffer = unix_name;
1288 unix_name_ret->Length = strlen(unix_name);
1289 unix_name_ret->MaximumLength = unix_len;
1290 return STATUS_SUCCESS;
1291 }
1292 if (!dev) break;
1293
1294 /* now try some defaults for it */
1295 if (!strcmp( dev, "aux" ))
1296 {
1297 strcpy( dev, "com1" );
1298 continue;
1299 }
1300 if (!strcmp( dev, "prn" ))
1301 {
1302 strcpy( dev, "lpt1" );
1303 continue;
1304 }
1305 if (!strcmp( dev, "nul" ))
1306 {
1307 strcpy( unix_name, "/dev/null" );
1308 dev = NULL; /* last try */
1309 continue;
1310 }
1311
1312 new_name = NULL;
1313 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1314 {
1315 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1316 new_name = get_default_drive_device( unix_name );
1317 }
1318 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1319 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1320
1321 if (!new_name) break;
1322
1323 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1324 unix_name = new_name;
1325 unix_len = strlen(unix_name) + 1;
1326 dev = NULL; /* last try */
1327 }
1328 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1329 return STATUS_OBJECT_NAME_NOT_FOUND;
1330 }
1331
1332
1333 /* return the length of the DOS namespace prefix if any */
1334 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1335 {
1336 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1337 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1338
1339 if (name->Length > sizeof(nt_prefixW) &&
1340 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1341 return sizeof(nt_prefixW) / sizeof(WCHAR);
1342
1343 if (name->Length > sizeof(dosdev_prefixW) &&
1344 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1345 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1346
1347 return 0;
1348 }
1349
1350
1351 /******************************************************************************
1352 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1353 *
1354 * Convert a file name from NT namespace to Unix namespace.
1355 *
1356 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1357 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1358 * returned, but the unix name is still filled in properly.
1359 */
1360 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1361 UINT disposition, BOOLEAN check_case )
1362 {
1363 static const WCHAR uncW[] = {'U','N','C','\\'};
1364 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1365
1366 NTSTATUS status = STATUS_SUCCESS;
1367 const char *config_dir = wine_get_config_dir();
1368 const WCHAR *name, *p;
1369 struct stat st;
1370 char *unix_name;
1371 int pos, ret, name_len, unix_len, used_default;
1372
1373 name = nameW->Buffer;
1374 name_len = nameW->Length / sizeof(WCHAR);
1375
1376 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1377
1378 if ((pos = get_dos_prefix_len( nameW )))
1379 {
1380 BOOLEAN is_unc = FALSE;
1381
1382 name += pos;
1383 name_len -= pos;
1384
1385 /* check for UNC prefix */
1386 if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1387 {
1388 name += 3;
1389 name_len -= 3;
1390 is_unc = TRUE;
1391 }
1392 else
1393 {
1394 /* check for a drive letter with path */
1395 if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1396 {
1397 /* not a drive with path, try other DOS devices */
1398 return get_dos_device( name, name_len, unix_name_ret );
1399 }
1400 name += 2; /* skip drive letter */
1401 name_len -= 2;
1402 }
1403
1404 /* check for invalid characters */
1405 for (p = name; p < name + name_len; p++)
1406 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1407
1408 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1409 unix_len += MAX_DIR_ENTRY_LEN + 3;
1410 unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1411 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1412 return STATUS_NO_MEMORY;
1413 strcpy( unix_name, config_dir );
1414 strcat( unix_name, "/dosdevices/" );
1415 pos = strlen(unix_name);
1416 if (is_unc)
1417 {
1418 strcpy( unix_name + pos, "unc" );
1419 pos += 3;
1420 }
1421 else
1422 {
1423 unix_name[pos++] = tolowerW( name[-2] );
1424 unix_name[pos++] = ':';
1425 unix_name[pos] = 0;
1426 }
1427 }
1428 else /* no DOS prefix, assume NT native name, map directly to Unix */
1429 {
1430 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1431 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1432 unix_len += MAX_DIR_ENTRY_LEN + 3;
1433 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1434 return STATUS_NO_MEMORY;
1435 pos = 0;
1436 }
1437
1438 /* try a shortcut first */
1439
1440 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1441 NULL, &used_default );
1442
1443 while (name_len && IS_SEPARATOR(*name))
1444 {
1445 name++;
1446 name_len--;
1447 }
1448
1449 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1450 {
1451 char *p;
1452 unix_name[pos + ret] = 0;
1453 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1454 if (!stat( unix_name, &st ))
1455 {
1456 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1457 if (disposition == FILE_CREATE)
1458 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1459 goto done;
1460 }
1461 }
1462
1463 if (!name_len) /* empty name -> drive root doesn't exist */
1464 {
1465 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1466 return STATUS_OBJECT_PATH_NOT_FOUND;
1467 }
1468 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1469 {
1470 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1471 return STATUS_OBJECT_NAME_NOT_FOUND;
1472 }
1473
1474 /* now do it component by component */
1475
1476 while (name_len)
1477 {
1478 const WCHAR *end, *next;
1479
1480 end = name;
1481 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1482 next = end;
1483 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1484 name_len -= next - name;
1485
1486 /* grow the buffer if needed */
1487
1488 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1489 {
1490 char *new_name;
1491 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1492 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1493 {
1494 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1495 return STATUS_NO_MEMORY;
1496 }
1497 unix_name = new_name;
1498 }
1499
1500 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1501
1502 /* if this is the last element, not finding it is not necessarily fatal */
1503 if (!name_len)
1504 {
1505 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1506 {
1507 status = STATUS_OBJECT_NAME_NOT_FOUND;
1508 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1509 {
1510 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1511 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1512 if (ret > 0 && !used_default)
1513 {
1514 unix_name[pos] = '/';
1515 unix_name[pos + 1 + ret] = 0;
1516 status = STATUS_NO_SUCH_FILE;
1517 break;
1518 }
1519 }
1520 }
1521 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1522 {
1523 status = STATUS_OBJECT_NAME_COLLISION;
1524 }
1525 }
1526
1527 if (status != STATUS_SUCCESS)
1528 {
1529 /* couldn't find it at all, fail */
1530 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1531 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1532 return status;
1533 }
1534
1535 pos += strlen( unix_name + pos );
1536 name = next;
1537 }
1538
1539 WARN( "%s -> %s required a case-insensitive search\n",
1540 debugstr_us(nameW), debugstr_a(unix_name) );
1541
1542 done:
1543 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1544 unix_name_ret->Buffer = unix_name;
1545 unix_name_ret->Length = strlen(unix_name);
1546 unix_name_ret->MaximumLength = unix_len;
1547 return status;
1548 }
1549
1550
1551 /******************************************************************
1552 * RtlDoesFileExists_U (NTDLL.@)
1553 */
1554 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1555 {
1556 UNICODE_STRING nt_name;
1557 ANSI_STRING unix_name;
1558 BOOLEAN ret;
1559
1560 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1561 ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1562 if (ret) RtlFreeAnsiString( &unix_name );
1563 RtlFreeUnicodeString( &nt_name );
1564 return ret;
1565 }
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