dlls/ntdll/directory.c

   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 #include <sys/stat.h>
  38 #ifdef HAVE_SYS_IOCTL_H
  39 #include <sys/ioctl.h>
  40 #endif
  41 #ifdef HAVE_LINUX_IOCTL_H
  42 #include <linux/ioctl.h>
  43 #endif
  44 #ifdef HAVE_SYS_PARAM_H
  45 #include <sys/param.h>
  46 #endif
  47 #ifdef HAVE_SYS_MOUNT_H
  48 #include <sys/mount.h>
  49 #endif
  50 #include <time.h>
  51 #ifdef HAVE_UNISTD_H
  52 # include <unistd.h>
  53 #endif
  54
  55 #define NONAMELESSUNION
  56 #define NONAMELESSSTRUCT
  57 #include "windef.h"
  58 #include "winbase.h"
  59 #include "winnt.h"
  60 #include "winreg.h"
  61 #include "ntstatus.h"
  62 #include "winternl.h"
  63 #include "ntdll_misc.h"
  64 #include "wine/unicode.h"
  65 #include "wine/server.h"
  66 #include "wine/library.h"
  67 #include "wine/debug.h"
  68
  69 WINE_DEFAULT_DEBUG_CHANNEL(file);
  70
  71 /* Define the VFAT ioctl to get both short and long file names */
  72 /* FIXME: is it possible to get this to work on other systems? */
  73 #ifdef linux
  74 /* We want the real kernel dirent structure, not the libc one */
  75 typedef struct
  76 {
  77     long d_ino;
  78     long d_off;
  79     unsigned short d_reclen;
  80     char d_name[256];
  81 } KERNEL_DIRENT;
  82
  83 #define VFAT_IOCTL_READDIR_BOTH  _IOR('r', 1, KERNEL_DIRENT [2] )
  84
  85 #ifndef O_DIRECTORY
  86 # define O_DIRECTORY 0200000 /* must be directory */
  87 #endif
  88
  89 /* Using the same seekdir value across multiple directories is not portable,  */
  90 /* but it works on Linux, and it's a major performance gain so we want to use */
  91 /* it if possible. */
  92 /* FIXME: do some sort of runtime check instead */
  93 #define USE_SEEKDIR
  94
  95 #else   /* linux */
  96 #undef VFAT_IOCTL_READDIR_BOTH  /* just in case... */
  97 #undef USE_SEEKDIR
  98 #endif  /* linux */
  99
 100 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
 101 #define IS_SEPARATOR(ch)   ((ch) == '\\' || (ch) == '/')
 102
 103 #define INVALID_NT_CHARS   '*','?','<','>','|','"'
 104 #define INVALID_DOS_CHARS  INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
 105
 106 #define MAX_DIR_ENTRY_LEN 255  /* max length of a directory entry in chars */
 107
 108 static int show_dir_symlinks = -1;
 109 static int show_dot_files;
 110
 111 /* at some point we may want to allow Winelib apps to set this */
 112 static const int is_case_sensitive = FALSE;
 113
 114 static CRITICAL_SECTION dir_section;
 115 static CRITICAL_SECTION_DEBUG critsect_debug =
 116 {
 117     0, 0, &dir_section,
 118     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
 119       0, 0, { 0, (DWORD)(__FILE__ ": dir_section") }
 120 };
 121 static CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
 122
 123
 124 /***********************************************************************
 125  *           seekdir_wrapper
 126  *
 127  * Wrapper for supporting seekdir across multiple directory objects.
 128  */
 129 static inline void seekdir_wrapper( DIR *dir, off_t pos )
 130 {
 131 #ifdef USE_SEEKDIR
 132     seekdir( dir, pos );
 133 #else
 134     while (pos-- > 0) if (!readdir( dir )) break;
 135 #endif
 136 }
 137
 138 /***********************************************************************
 139  *           telldir_wrapper
 140  *
 141  * Wrapper for supporting telldir across multiple directory objects.
 142  */
 143 static inline off_t telldir_wrapper( DIR *dir, off_t pos, int count )
 144 {
 145 #ifdef USE_SEEKDIR
 146     return telldir( dir );
 147 #else
 148     return pos + count;
 149 #endif
 150 }
 151
 152
 153 /***********************************************************************
 154  *           get_default_com_device
 155  *
 156  * Return the default device to use for serial ports.
 157  */
 158 static char *get_default_com_device( int num )
 159 {
 160     char *ret = NULL;
 161
 162     if (!num || num > 9) return ret;
 163 #ifdef linux
 164     ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
 165     if (ret)
 166     {
 167         strcpy( ret, "/dev/ttyS0" );
 168         ret[strlen(ret) - 1] = '0' + num - 1;
 169     }
 170 #else
 171     FIXME( "no known default for device com%d\n", num );
 172 #endif
 173     return ret;
 174 }
 175
 176
 177 /***********************************************************************
 178  *           get_default_lpt_device
 179  *
 180  * Return the default device to use for parallel ports.
 181  */
 182 static char *get_default_lpt_device( int num )
 183 {
 184     char *ret = NULL;
 185
 186     if (!num || num > 9) return ret;
 187 #ifdef linux
 188     ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
 189     if (ret)
 190     {
 191         strcpy( ret, "/dev/lp0" );
 192         ret[strlen(ret) - 1] = '0' + num - 1;
 193     }
 194 #else
 195     FIXME( "no known default for device lpt%d\n", num );
 196 #endif
 197     return ret;
 198 }
 199
 200
 201 /***********************************************************************
 202  *           parse_mount_entries
 203  *
 204  * Parse mount entries looking for a given device. Helper for get_default_drive_device.
 205  */
 206 #ifdef linux
 207 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
 208 {
 209     struct mntent *entry;
 210     struct stat st;
 211     char *device;
 212
 213     while ((entry = getmntent( f )))
 214     {
 215         /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
 216         if (!strcmp( entry->mnt_type, "nfs" ) ||
 217             !strcmp( entry->mnt_type, "smbfs" ) ||
 218             !strcmp( entry->mnt_type, "ncpfs" )) continue;
 219
 220         if (stat( entry->mnt_dir, &st ) == -1) continue;
 221         if (st.st_dev != dev || st.st_ino != ino) continue;
 222         if (!strcmp( entry->mnt_type, "supermount" ))
 223         {
 224             if ((device = strstr( entry->mnt_opts, "dev=" )))
 225             {
 226                 char *p = strchr( device + 4, ',' );
 227                 if (p) *p = 0;
 228                 return device + 4;
 229             }
 230         }
 231         else
 232             return entry->mnt_fsname;
 233     }
 234     return NULL;
 235 }
 236 #endif
 237
 238 /***********************************************************************
 239  *           get_default_drive_device
 240  *
 241  * Return the default device to use for a given drive mount point.
 242  */
 243 static char *get_default_drive_device( const char *root )
 244 {
 245     char *ret = NULL;
 246
 247 #ifdef linux
 248     FILE *f;
 249     char *device = NULL;
 250     int fd, res = -1;
 251     struct stat st;
 252
 253     /* try to open it first to force it to get mounted */
 254     if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
 255     {
 256         res = fstat( fd, &st );
 257         close( fd );
 258     }
 259     /* now try normal stat just in case */
 260     if (res == -1) res = stat( root, &st );
 261     if (res == -1) return NULL;
 262
 263     RtlEnterCriticalSection( &dir_section );
 264
 265     if ((f = fopen( "/etc/mtab", "r" )))
 266     {
 267         device = parse_mount_entries( f, st.st_dev, st.st_ino );
 268         endmntent( f );
 269     }
 270     /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
 271     if (!device && (f = fopen( "/etc/fstab", "r" )))
 272     {
 273         device = parse_mount_entries( f, st.st_dev, st.st_ino );
 274         endmntent( f );
 275     }
 276     if (device)
 277     {
 278         ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
 279         if (ret) strcpy( ret, device );
 280     }
 281     RtlLeaveCriticalSection( &dir_section );
 282 #elif defined(__APPLE__)
 283     struct statfs *mntStat;
 284     struct stat st;
 285     int i;
 286     int mntSize;
 287     dev_t dev;
 288     ino_t ino;
 289     static const char path_bsd_device[] = "/dev/disk";
 290     int res;
 291
 292     res = stat( root, &st );
 293     if (res == -1) return NULL;
 294
 295     dev = st.st_dev;
 296     ino = st.st_ino;
 297
 298     RtlEnterCriticalSection( &dir_section );
 299
 300     mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
 301
 302     for (i = 0; i < mntSize && !ret; i++)
 303     {
 304         if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
 305         if (st.st_dev != dev || st.st_ino != ino) continue;
 306
 307         /* FIXME add support for mounted network drive */
 308         if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
 309         {
 310             /* set return value to the corresponding raw BSD node */
 311             ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
 312             if (ret)
 313             {
 314                 strcpy(ret, "/dev/r");
 315                 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
 316             }
 317         }
 318     }
 319     RtlLeaveCriticalSection( &dir_section );
 320 #else
 321     static int warned;
 322     if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
 323 #endif
 324     return ret;
 325 }
 326
 327
 328 /***********************************************************************
 329  *           init_options
 330  *
 331  * Initialize the show_dir_symlinks and show_dot_files options.
 332  */
 333 static void init_options(void)
 334 {
 335     static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
 336                                   'S','o','f','t','w','a','r','e','\\',
 337                                   'W','i','n','e','\\','W','i','n','e','\\',
 338                                   'C','o','n','f','i','g','\\','W','i','n','e',0};
 339     static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
 340     static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
 341     char tmp[80];
 342     HKEY hkey;
 343     DWORD dummy;
 344     OBJECT_ATTRIBUTES attr;
 345     UNICODE_STRING nameW;
 346
 347     show_dot_files = show_dir_symlinks = 0;
 348
 349     attr.Length = sizeof(attr);
 350     attr.RootDirectory = 0;
 351     attr.ObjectName = &nameW;
 352     attr.Attributes = 0;
 353     attr.SecurityDescriptor = NULL;
 354     attr.SecurityQualityOfService = NULL;
 355     RtlInitUnicodeString( &nameW, WineW );
 356
 357     if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
 358     {
 359         RtlInitUnicodeString( &nameW, ShowDotFilesW );
 360         if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 361         {
 362             WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 363             show_dot_files = IS_OPTION_TRUE( str[0] );
 364         }
 365         RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
 366         if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
 367         {
 368             WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 369             show_dir_symlinks = IS_OPTION_TRUE( str[0] );
 370         }
 371         NtClose( hkey );
 372     }
 373 }
 374
 375
 376 /***********************************************************************
 377  *           DIR_is_hidden_file
 378  *
 379  * Check if the specified file should be hidden based on its name and the show dot files option.
 380  */
 381 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
 382 {
 383     WCHAR *p, *end;
 384
 385     if (show_dir_symlinks == -1) init_options();
 386     if (show_dot_files) return FALSE;
 387
 388     end = p = name->Buffer + name->Length/sizeof(WCHAR);
 389     while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
 390     while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
 391     if (p == end || *p != '.') return FALSE;
 392     /* make sure it isn't '.' or '..' */
 393     if (p + 1 == end) return FALSE;
 394     if (p[1] == '.' && p + 2 == end) return FALSE;
 395     return TRUE;
 396 }
 397
 398
 399 /***********************************************************************
 400  *           hash_short_file_name
 401  *
 402  * Transform a Unix file name into a hashed DOS name. If the name is a valid
 403  * DOS name, it is converted to upper-case; otherwise it is replaced by a
 404  * hashed version that fits in 8.3 format.
 405  * 'buffer' must be at least 12 characters long.
 406  * Returns length of short name in bytes; short name is NOT null-terminated.
 407  */
 408 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
 409 {
 410     static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
 411     static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
 412
 413     LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
 414     LPWSTR dst;
 415     unsigned short hash;
 416     int i;
 417
 418     /* Compute the hash code of the file name */
 419     /* If you know something about hash functions, feel free to */
 420     /* insert a better algorithm here... */
 421     if (!is_case_sensitive)
 422     {
 423         for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
 424             hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
 425         hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
 426     }
 427     else
 428     {
 429         for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
 430             hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
 431         hash = (hash << 3) ^ (hash >> 5) ^ *p;  /* Last character */
 432     }
 433
 434     /* Find last dot for start of the extension */
 435     for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
 436
 437     /* Copy first 4 chars, replacing invalid chars with '_' */
 438     for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
 439     {
 440         if (p == end || p == ext) break;
 441         *dst++ = strchrW( invalid_chars, *p ) ? '_' : toupperW(*p);
 442     }
 443     /* Pad to 5 chars with '~' */
 444     while (i-- >= 0) *dst++ = '~';
 445
 446     /* Insert hash code converted to 3 ASCII chars */
 447     *dst++ = hash_chars[(hash >> 10) & 0x1f];
 448     *dst++ = hash_chars[(hash >> 5) & 0x1f];
 449     *dst++ = hash_chars[hash & 0x1f];
 450
 451     /* Copy the first 3 chars of the extension (if any) */
 452     if (ext)
 453     {
 454         *dst++ = '.';
 455         for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
 456             *dst++ = strchrW( invalid_chars, *ext ) ? '_' : toupperW(*ext);
 457     }
 458     return dst - buffer;
 459 }
 460
 461
 462 /***********************************************************************
 463  *           match_filename
 464  *
 465  * Check a long file name against a mask.
 466  *
 467  * Tests (done in W95 DOS shell - case insensitive):
 468  * *.txt                        test1.test.txt                          *
 469  * *st1*                        test1.txt                               *
 470  * *.t??????.t*                 test1.ta.tornado.txt                    *
 471  * *tornado*                    test1.ta.tornado.txt                    *
 472  * t*t                          test1.ta.tornado.txt                    *
 473  * ?est*                        test1.txt                               *
 474  * ?est???                      test1.txt                               -
 475  * *test1.txt*                  test1.txt                               *
 476  * h?l?o*t.dat                  hellothisisatest.dat                    *
 477  */
 478 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
 479 {
 480     int mismatch;
 481     const WCHAR *name = name_str->Buffer;
 482     const WCHAR *mask = mask_str->Buffer;
 483     const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
 484     const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
 485     const WCHAR *lastjoker = NULL;
 486     const WCHAR *next_to_retry = NULL;
 487
 488     TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
 489
 490     while (name < name_end && mask < mask_end)
 491     {
 492         switch(*mask)
 493         {
 494         case '*':
 495             mask++;
 496             while (mask < mask_end && *mask == '*') mask++;  /* Skip consecutive '*' */
 497             if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
 498             lastjoker = mask;
 499
 500             /* skip to the next match after the joker(s) */
 501             if (is_case_sensitive)
 502                 while (name < name_end && (*name != *mask)) name++;
 503             else
 504                 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
 505             next_to_retry = name;
 506             break;
 507         case '?':
 508             mask++;
 509             name++;
 510             break;
 511         default:
 512             if (is_case_sensitive) mismatch = (*mask != *name);
 513             else mismatch = (toupperW(*mask) != toupperW(*name));
 514
 515             if (!mismatch)
 516             {
 517                 mask++;
 518                 name++;
 519                 if (mask == mask_end)
 520                 {
 521                     if (name == name_end) return TRUE;
 522                     if (lastjoker) mask = lastjoker;
 523                 }
 524             }
 525             else /* mismatch ! */
 526             {
 527                 if (lastjoker) /* we had an '*', so we can try unlimitedly */
 528                 {
 529                     mask = lastjoker;
 530
 531                     /* this scan sequence was a mismatch, so restart
 532                      * 1 char after the first char we checked last time */
 533                     next_to_retry++;
 534                     name = next_to_retry;
 535                 }
 536                 else return FALSE; /* bad luck */
 537             }
 538             break;
 539         }
 540     }
 541     while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
 542         mask++;  /* Ignore trailing '.' or '*' in mask */
 543     return (name == name_end && mask == mask_end);
 544 }
 545
 546
 547 /***********************************************************************
 548  *           append_entry
 549  *
 550  * helper for NtQueryDirectoryFile
 551  */
 552 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
 553                                                 const char *long_name, const char *short_name,
 554                                                 const UNICODE_STRING *mask )
 555 {
 556     FILE_BOTH_DIR_INFORMATION *info;
 557     int i, long_len, short_len, total_len;
 558     struct stat st;
 559     WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
 560     WCHAR short_nameW[12];
 561     UNICODE_STRING str;
 562
 563     long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
 564     if (long_len == -1) return NULL;
 565
 566     str.Buffer = long_nameW;
 567     str.Length = long_len * sizeof(WCHAR);
 568     str.MaximumLength = sizeof(long_nameW);
 569
 570     if (short_name)
 571     {
 572         short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
 573                                      short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
 574         if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
 575     }
 576     else  /* generate a short name if necessary */
 577     {
 578         BOOLEAN spaces;
 579
 580         short_len = 0;
 581         if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
 582             short_len = hash_short_file_name( &str, short_nameW );
 583     }
 584
 585     TRACE( "long %s short %s mask %s\n",
 586            debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
 587
 588     if (mask && !match_filename( &str, mask ))
 589     {
 590         if (!short_len) return NULL;  /* no short name to match */
 591         str.Buffer = short_nameW;
 592         str.Length = short_len * sizeof(WCHAR);
 593         str.MaximumLength = sizeof(short_nameW);
 594         if (!match_filename( &str, mask )) return NULL;
 595     }
 596
 597     total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
 598     info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
 599
 600     if (*pos + total_len > max_length) total_len = max_length - *pos;
 601
 602     if (lstat( long_name, &st ) == -1) return NULL;
 603     if (S_ISLNK( st.st_mode ))
 604     {
 605         if (stat( long_name, &st ) == -1) return NULL;
 606         if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
 607     }
 608
 609     info->NextEntryOffset = total_len;
 610     info->FileIndex = 0;  /* NTFS always has 0 here, so let's not bother with it */
 611
 612     RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
 613     RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
 614     RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
 615     RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
 616
 617     if (S_ISDIR(st.st_mode))
 618     {
 619         info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
 620         info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 621     }
 622     else
 623     {
 624         info->EndOfFile.QuadPart = st.st_size;
 625         info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
 626         info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
 627     }
 628
 629     if (!(st.st_mode & S_IWUSR))
 630         info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
 631
 632     if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
 633         info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
 634
 635     info->EaSize = 0; /* FIXME */
 636     info->ShortNameLength = short_len * sizeof(WCHAR);
 637     for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
 638     info->FileNameLength = long_len * sizeof(WCHAR);
 639     memcpy( info->FileName, long_nameW,
 640             min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
 641
 642     *pos += total_len;
 643     return info;
 644 }
 645
 646
 647 /******************************************************************************
 648  *  NtQueryDirectoryFile        [NTDLL.@]
 649  *  ZwQueryDirectoryFile        [NTDLL.@]
 650  */
 651 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
 652                                       PIO_APC_ROUTINE apc_routine, PVOID apc_context,
 653                                       PIO_STATUS_BLOCK io,
 654                                       PVOID buffer, ULONG length,
 655                                       FILE_INFORMATION_CLASS info_class,
 656                                       BOOLEAN single_entry,
 657                                       PUNICODE_STRING mask,
 658                                       BOOLEAN restart_scan )
 659 {
 660     int cwd, fd;
 661     FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
 662     static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
 663
 664     TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
 665           handle, event, apc_routine, apc_context, io, buffer,
 666           length, info_class, single_entry, debugstr_us(mask),
 667           restart_scan);
 668
 669     if (length < sizeof(*info)) return STATUS_INFO_LENGTH_MISMATCH;
 670
 671     if (event || apc_routine)
 672     {
 673         FIXME( "Unsupported yet option\n" );
 674         return io->u.Status = STATUS_NOT_IMPLEMENTED;
 675     }
 676     if (info_class != FileBothDirectoryInformation)
 677     {
 678         FIXME( "Unsupported file info class %d\n", info_class );
 679         return io->u.Status = STATUS_NOT_IMPLEMENTED;
 680     }
 681
 682     if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
 683         return io->u.Status;
 684
 685     io->Information = 0;
 686
 687     RtlEnterCriticalSection( &dir_section );
 688
 689     if (show_dir_symlinks == -1) init_options();
 690
 691     if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
 692     {
 693         off_t old_pos = 0;
 694
 695 #ifdef VFAT_IOCTL_READDIR_BOTH
 696         KERNEL_DIRENT de[2];
 697
 698         io->u.Status = STATUS_SUCCESS;
 699
 700         /* Check if the VFAT ioctl is supported on this directory */
 701
 702         if (restart_scan) lseek( fd, 0, SEEK_SET );
 703         else old_pos = lseek( fd, 0, SEEK_CUR );
 704
 705         if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
 706         {
 707             if (length < max_dir_info_size)  /* we may have to return a partial entry here */
 708             {
 709                 for (;;)
 710                 {
 711                     if (!de[0].d_reclen) break;
 712                     if (de[1].d_name[0])
 713                         info = append_entry( buffer, &io->Information, length,
 714                                              de[1].d_name, de[0].d_name, mask );
 715                     else
 716                         info = append_entry( buffer, &io->Information, length,
 717                                              de[0].d_name, NULL, mask );
 718                     if (info)
 719                     {
 720                         last_info = info;
 721                         if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
 722                         {
 723                             io->u.Status = STATUS_BUFFER_OVERFLOW;
 724                             lseek( fd, old_pos, SEEK_SET );  /* restore pos to previous entry */
 725                         }
 726                         break;
 727                     }
 728                     old_pos = lseek( fd, 0, SEEK_CUR );
 729                     if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
 730                 }
 731             }
 732             else  /* we'll only return full entries, no need to worry about overflow */
 733             {
 734                 for (;;)
 735                 {
 736                     if (!de[0].d_reclen) break;
 737                     if (de[1].d_name[0])
 738                         info = append_entry( buffer, &io->Information, length,
 739                                              de[1].d_name, de[0].d_name, mask );
 740                     else
 741                         info = append_entry( buffer, &io->Information, length,
 742                                              de[0].d_name, NULL, mask );
 743                     if (info)
 744                     {
 745                         last_info = info;
 746                         if (single_entry) break;
 747                         /* check if we still have enough space for the largest possible entry */
 748                         if (io->Information + max_dir_info_size > length) break;
 749                     }
 750                     if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
 751                 }
 752             }
 753         }
 754         else if (errno != ENOENT)
 755 #endif  /* VFAT_IOCTL_READDIR_BOTH */
 756         {
 757             DIR *dir;
 758             struct dirent *de;
 759
 760             if (!(dir = opendir( "." )))
 761             {
 762                 io->u.Status = FILE_GetNtStatus();
 763                 goto done;
 764             }
 765             if (!restart_scan)
 766             {
 767                 old_pos = lseek( fd, 0, SEEK_CUR );
 768                 seekdir_wrapper( dir, old_pos );
 769             }
 770             io->u.Status = STATUS_SUCCESS;
 771
 772             if (length < max_dir_info_size)  /* we may have to return a partial entry here */
 773             {
 774                 while ((de = readdir( dir )))
 775                 {
 776                     info = append_entry( buffer, &io->Information, length,
 777                                          de->d_name, NULL, mask );
 778                     if (info)
 779                     {
 780                         last_info = info;
 781                         if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
 782                             io->u.Status = STATUS_BUFFER_OVERFLOW;
 783                         else
 784                             old_pos = telldir_wrapper( dir, old_pos, 1 );
 785                         break;
 786                     }
 787                     old_pos = telldir_wrapper( dir, old_pos, 1 );
 788                 }
 789             }
 790             else  /* we'll only return full entries, no need to worry about overflow */
 791             {
 792                 int count = 0;
 793                 while ((de = readdir( dir )))
 794                 {
 795                     count++;
 796                     info = append_entry( buffer, &io->Information, length,
 797                                          de->d_name, NULL, mask );
 798                     if (info)
 799                     {
 800                         last_info = info;
 801                         if (single_entry) break;
 802                         /* check if we still have enough space for the largest possible entry */
 803                         if (io->Information + max_dir_info_size > length) break;
 804                     }
 805                 }
 806                 old_pos = telldir_wrapper( dir, old_pos, count );
 807             }
 808             lseek( fd, old_pos, SEEK_SET );  /* store dir offset as filepos for fd */
 809             closedir( dir );
 810         }
 811
 812         if (last_info) last_info->NextEntryOffset = 0;
 813         else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
 814
 815     done:
 816         if (fchdir( cwd ) == -1) chdir( "/" );
 817     }
 818     else io->u.Status = FILE_GetNtStatus();
 819
 820     RtlLeaveCriticalSection( &dir_section );
 821
 822     wine_server_release_fd( handle, fd );
 823     if (cwd != -1) close( cwd );
 824     TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
 825     return io->u.Status;
 826 }
 827
 828
 829 /***********************************************************************
 830  *           find_file_in_dir
 831  *
 832  * Find a file in a directory the hard way, by doing a case-insensitive search.
 833  * The file found is appended to unix_name at pos.
 834  * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
 835  */
 836 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
 837                                   int check_case )
 838 {
 839     WCHAR buffer[MAX_DIR_ENTRY_LEN];
 840     UNICODE_STRING str;
 841     BOOLEAN spaces;
 842     DIR *dir;
 843     struct dirent *de;
 844     struct stat st;
 845     int ret, used_default, is_name_8_dot_3;
 846
 847     /* try a shortcut for this directory */
 848
 849     unix_name[pos++] = '/';
 850     ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
 851                            NULL, &used_default );
 852     /* if we used the default char, the Unix name won't round trip properly back to Unicode */
 853     /* so it cannot match the file we are looking for */
 854     if (ret >= 0 && !used_default)
 855     {
 856         unix_name[pos + ret] = 0;
 857         if (!stat( unix_name, &st )) return STATUS_SUCCESS;
 858     }
 859     if (check_case) goto not_found;  /* we want an exact match */
 860
 861     if (pos > 1) unix_name[pos - 1] = 0;
 862     else unix_name[1] = 0;  /* keep the initial slash */
 863
 864     /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
 865
 866     str.Buffer = (WCHAR *)name;
 867     str.Length = length * sizeof(WCHAR);
 868     str.MaximumLength = str.Length;
 869     is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
 870
 871     /* now look for it through the directory */
 872
 873 #ifdef VFAT_IOCTL_READDIR_BOTH
 874     if (is_name_8_dot_3)
 875     {
 876         int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
 877         if (fd != -1)
 878         {
 879             KERNEL_DIRENT de[2];
 880
 881             if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
 882             {
 883                 unix_name[pos - 1] = '/';
 884                 for (;;)
 885                 {
 886                     if (!de[0].d_reclen) break;
 887
 888                     if (de[1].d_name[0])
 889                     {
 890                         ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
 891                                                buffer, MAX_DIR_ENTRY_LEN );
 892                         if (ret == length && !memicmpW( buffer, name, length))
 893                         {
 894                             strcpy( unix_name + pos, de[1].d_name );
 895                             close( fd );
 896                             return STATUS_SUCCESS;
 897                         }
 898                     }
 899                     ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
 900                                            buffer, MAX_DIR_ENTRY_LEN );
 901                     if (ret == length && !memicmpW( buffer, name, length))
 902                     {
 903                         strcpy( unix_name + pos,
 904                                 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
 905                         close( fd );
 906                         return STATUS_SUCCESS;
 907                     }
 908                     if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
 909                     {
 910                         close( fd );
 911                         goto not_found;
 912                     }
 913                 }
 914             }
 915             close( fd );
 916         }
 917         /* fall through to normal handling */
 918     }
 919 #endif /* VFAT_IOCTL_READDIR_BOTH */
 920
 921     if (!(dir = opendir( unix_name )))
 922     {
 923         if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
 924         else return FILE_GetNtStatus();
 925     }
 926     unix_name[pos - 1] = '/';
 927     str.Buffer = buffer;
 928     str.MaximumLength = sizeof(buffer);
 929     while ((de = readdir( dir )))
 930     {
 931         ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
 932         if (ret == length && !memicmpW( buffer, name, length ))
 933         {
 934             strcpy( unix_name + pos, de->d_name );
 935             closedir( dir );
 936             return STATUS_SUCCESS;
 937         }
 938
 939         if (!is_name_8_dot_3) continue;
 940
 941         str.Length = ret * sizeof(WCHAR);
 942         if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
 943         {
 944             WCHAR short_nameW[12];
 945             ret = hash_short_file_name( &str, short_nameW );
 946             if (ret == length && !memicmpW( short_nameW, name, length ))
 947             {
 948                 strcpy( unix_name + pos, de->d_name );
 949                 closedir( dir );
 950                 return STATUS_SUCCESS;
 951             }
 952         }
 953     }
 954     closedir( dir );
 955     goto not_found;  /* avoid warning */
 956
 957 not_found:
 958     unix_name[pos - 1] = 0;
 959     return STATUS_OBJECT_PATH_NOT_FOUND;
 960 }
 961
 962
 963 /******************************************************************************
 964  *           get_dos_device
 965  *
 966  * Get the Unix path of a DOS device.
 967  */
 968 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
 969 {
 970     const char *config_dir = wine_get_config_dir();
 971     struct stat st;
 972     char *unix_name, *new_name, *dev;
 973     unsigned int i;
 974     int unix_len;
 975
 976     /* make sure the device name is ASCII */
 977     for (i = 0; i < name_len; i++)
 978         if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
 979
 980     unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
 981
 982     if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
 983         return STATUS_NO_MEMORY;
 984
 985     strcpy( unix_name, config_dir );
 986     strcat( unix_name, "/dosdevices/" );
 987     dev = unix_name + strlen(unix_name);
 988
 989     for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
 990     dev[i] = 0;
 991
 992     /* special case for drive devices */
 993     if (name_len == 2 && dev[1] == ':')
 994     {
 995         dev[i++] = ':';
 996         dev[i] = 0;
 997     }
 998
 999     for (;;)
1000     {
1001         if (!stat( unix_name, &st ))
1002         {
1003             TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1004             unix_name_ret->Buffer = unix_name;
1005             unix_name_ret->Length = strlen(unix_name);
1006             unix_name_ret->MaximumLength = unix_len;
1007             return STATUS_SUCCESS;
1008         }
1009         if (!dev) break;
1010
1011         /* now try some defaults for it */
1012         if (!strcmp( dev, "aux" ))
1013         {
1014             strcpy( dev, "com1" );
1015             continue;
1016         }
1017         if (!strcmp( dev, "prn" ))
1018         {
1019             strcpy( dev, "lpt1" );
1020             continue;
1021         }
1022         if (!strcmp( dev, "nul" ))
1023         {
1024             strcpy( unix_name, "/dev/null" );
1025             dev = NULL; /* last try */
1026             continue;
1027         }
1028
1029         new_name = NULL;
1030         if (dev[1] == ':' && dev[2] == ':')  /* drive device */
1031         {
1032             dev[2] = 0;  /* remove last ':' to get the drive mount point symlink */
1033             new_name = get_default_drive_device( unix_name );
1034         }
1035         else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1036         else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1037
1038         if (!new_name) break;
1039
1040         RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1041         unix_name = new_name;
1042         unix_len = strlen(unix_name) + 1;
1043         dev = NULL; /* last try */
1044     }
1045     RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1046     return STATUS_OBJECT_NAME_NOT_FOUND;
1047 }
1048
1049
1050 /* return the length of the DOS namespace prefix if any */
1051 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1052 {
1053     static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1054     static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1055
1056     if (name->Length > sizeof(nt_prefixW) &&
1057         !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1058         return sizeof(nt_prefixW) / sizeof(WCHAR);
1059
1060     if (name->Length > sizeof(dosdev_prefixW) &&
1061         !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1062         return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1063
1064     return 0;
1065 }
1066
1067
1068 /******************************************************************************
1069  *           wine_nt_to_unix_file_name  (NTDLL.@) Not a Windows API
1070  *
1071  * Convert a file name from NT namespace to Unix namespace.
1072  *
1073  * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1074  * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1075  * returned, but the unix name is still filled in properly.
1076  */
1077 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1078                                     UINT disposition, BOOLEAN check_case )
1079 {
1080     static const WCHAR uncW[] = {'U','N','C','\\'};
1081     static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1082
1083     NTSTATUS status = STATUS_SUCCESS;
1084     const char *config_dir = wine_get_config_dir();
1085     const WCHAR *name, *p;
1086     struct stat st;
1087     char *unix_name;
1088     int pos, ret, name_len, unix_len, used_default;
1089
1090     name     = nameW->Buffer;
1091     name_len = nameW->Length / sizeof(WCHAR);
1092
1093     if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1094
1095     if ((pos = get_dos_prefix_len( nameW )))
1096     {
1097         BOOLEAN is_unc = FALSE;
1098
1099         name += pos;
1100         name_len -= pos;
1101
1102         /* check for UNC prefix */
1103         if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1104         {
1105             name += 3;
1106             name_len -= 3;
1107             is_unc = TRUE;
1108         }
1109         else
1110         {
1111             /* check for a drive letter with path */
1112             if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1113             {
1114                 /* not a drive with path, try other DOS devices */
1115                 return get_dos_device( name, name_len, unix_name_ret );
1116             }
1117             name += 2;  /* skip drive letter */
1118             name_len -= 2;
1119         }
1120
1121         /* check for invalid characters */
1122         for (p = name; p < name + name_len; p++)
1123             if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1124
1125         unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1126         unix_len += MAX_DIR_ENTRY_LEN + 3;
1127         unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1128         if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1129             return STATUS_NO_MEMORY;
1130         strcpy( unix_name, config_dir );
1131         strcat( unix_name, "/dosdevices/" );
1132         pos = strlen(unix_name);
1133         if (is_unc)
1134         {
1135             strcpy( unix_name + pos, "unc" );
1136             pos += 3;
1137         }
1138         else
1139         {
1140             unix_name[pos++] = tolowerW( name[-2] );
1141             unix_name[pos++] = ':';
1142             unix_name[pos] = 0;
1143         }
1144     }
1145     else  /* no DOS prefix, assume NT native name, map directly to Unix */
1146     {
1147         if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1148         unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1149         unix_len += MAX_DIR_ENTRY_LEN + 3;
1150         if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1151             return STATUS_NO_MEMORY;
1152         pos = 0;
1153     }
1154
1155     /* try a shortcut first */
1156
1157     ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1158                            NULL, &used_default );
1159
1160     while (name_len && IS_SEPARATOR(*name))
1161     {
1162         name++;
1163         name_len--;
1164     }
1165
1166     if (ret > 0 && !used_default)  /* if we used the default char the name didn't convert properly */
1167     {
1168         char *p;
1169         unix_name[pos + ret] = 0;
1170         for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1171         if (!stat( unix_name, &st ))
1172         {
1173             /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1174             if (disposition == FILE_CREATE)
1175                 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1176             goto done;
1177         }
1178     }
1179
1180     if (!name_len)  /* empty name -> drive root doesn't exist */
1181     {
1182         RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1183         return STATUS_OBJECT_PATH_NOT_FOUND;
1184     }
1185     if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1186     {
1187         RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1188         return STATUS_OBJECT_NAME_NOT_FOUND;
1189     }
1190
1191     /* now do it component by component */
1192
1193     while (name_len)
1194     {
1195         const WCHAR *end, *next;
1196
1197         end = name;
1198         while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1199         next = end;
1200         while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1201         name_len -= next - name;
1202
1203         /* grow the buffer if needed */
1204
1205         if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1206         {
1207             char *new_name;
1208             unix_len += 2 * MAX_DIR_ENTRY_LEN;
1209             if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1210             {
1211                 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1212                 return STATUS_NO_MEMORY;
1213             }
1214             unix_name = new_name;
1215         }
1216
1217         status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1218
1219         /* if this is the last element, not finding it is not necessarily fatal */
1220         if (!name_len)
1221         {
1222             if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1223             {
1224                 status = STATUS_OBJECT_NAME_NOT_FOUND;
1225                 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1226                 {
1227                     ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1228                                            MAX_DIR_ENTRY_LEN, NULL, &used_default );
1229                     if (ret > 0 && !used_default)
1230                     {
1231                         unix_name[pos] = '/';
1232                         unix_name[pos + 1 + ret] = 0;
1233                         status = STATUS_NO_SUCH_FILE;
1234                         break;
1235                     }
1236                 }
1237             }
1238             else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1239             {
1240                 status = STATUS_OBJECT_NAME_COLLISION;
1241             }
1242         }
1243
1244         if (status != STATUS_SUCCESS)
1245         {
1246             /* couldn't find it at all, fail */
1247             WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1248             RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1249             return status;
1250         }
1251
1252         pos += strlen( unix_name + pos );
1253         name = next;
1254     }
1255
1256     WARN( "%s -> %s required a case-insensitive search\n",
1257           debugstr_us(nameW), debugstr_a(unix_name) );
1258
1259 done:
1260     TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1261     unix_name_ret->Buffer = unix_name;
1262     unix_name_ret->Length = strlen(unix_name);
1263     unix_name_ret->MaximumLength = unix_len;
1264     return status;
1265 }
1266
1267
1268 /******************************************************************
1269  *              RtlDoesFileExists_U   (NTDLL.@)
1270  */
1271 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1272 {
1273     UNICODE_STRING nt_name;
1274     ANSI_STRING unix_name;
1275     BOOLEAN ret;
1276
1277     if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1278     ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1279     if (ret) RtlFreeAnsiString( &unix_name );
1280     RtlFreeUnicodeString( &nt_name );
1281     return ret;
1282 }