files/directory.c

   1 /*
   2  * DOS directories functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include <ctype.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12 #include <unistd.h>
  13 #include <errno.h>
  14 #include <sys/errno.h>
  15
  16 #include "windows.h"
  17 #include "winerror.h"
  18 #include "process.h"
  19 #include "drive.h"
  20 #include "file.h"
  21 #include "heap.h"
  22 #include "msdos.h"
  23 #include "options.h"
  24 #include "debug.h"
  25
  26 static DOS_FULL_NAME DIR_Windows;
  27 static DOS_FULL_NAME DIR_System;
  28
  29
  30 /***********************************************************************
  31  *           DIR_GetPath
  32  *
  33  * Get a path name from the wine.ini file and make sure it is valid.
  34  */
  35 static int DIR_GetPath( const char *keyname, const char *defval,
  36                         DOS_FULL_NAME *full_name )
  37 {
  38     char path[MAX_PATHNAME_LEN];
  39     BY_HANDLE_FILE_INFORMATION info;
  40
  41     PROFILE_GetWineIniString( "wine", keyname, defval, path, sizeof(path) );
  42     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  43         !FILE_Stat( full_name->long_name, &info ) ||
  44         !(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
  45     {
  46         MSG("Invalid path '%s' for %s directory\n", path, keyname);
  47         return 0;
  48     }
  49     return 1;
  50 }
  51
  52
  53 /***********************************************************************
  54  *           DIR_Init
  55  */
  56 int DIR_Init(void)
  57 {
  58     char path[MAX_PATHNAME_LEN];
  59     DOS_FULL_NAME tmp_dir;
  60     int drive;
  61     const char *cwd;
  62
  63     if (!getcwd( path, MAX_PATHNAME_LEN ))
  64     {
  65         perror( "Could not get current directory" );
  66         return 0;
  67     }
  68     cwd = path;
  69     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
  70     {
  71         MSG("Warning: could not find DOS drive for cwd %s; "
  72             "starting in windows directory.\n", cwd );
  73     }
  74     else
  75     {
  76         DRIVE_SetCurrentDrive( drive );
  77         DRIVE_Chdir( drive, cwd );
  78     }
  79
  80     if (!(DIR_GetPath( "windows", "c:\\windows", &DIR_Windows )) ||
  81         !(DIR_GetPath( "system", "c:\\windows\\system", &DIR_System )) ||
  82         !(DIR_GetPath( "temp", "c:\\windows", &tmp_dir )))
  83     {
  84         PROFILE_UsageWineIni();
  85         return 0;
  86     }
  87     if (-1 == access( tmp_dir.long_name, W_OK ))
  88     {
  89         if (errno==EACCES)
  90         {
  91                 MSG("Warning: The Temporary Directory (as specified in your configuration file) is NOT writeable.\n");
  92                 PROFILE_UsageWineIni();
  93         }
  94         else
  95                 MSG("Warning: Access to Temporary Directory failed (%s).\n",
  96                     strerror(errno));
  97     }
  98
  99     if (drive == -1)
 100     {
 101         drive = DIR_Windows.drive;
 102         DRIVE_SetCurrentDrive( drive );
 103         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 104     }
 105
 106     PROFILE_GetWineIniString("wine", "path", "c:\\windows;c:\\windows\\system",
 107                              path, sizeof(path) );
 108
 109     /* Set the environment variables */
 110
 111     SetEnvironmentVariable32A( "PATH", path );
 112     SetEnvironmentVariable32A( "COMSPEC", "c:\\command.com" );
 113     SetEnvironmentVariable32A( "TEMP", tmp_dir.short_name );
 114     SetEnvironmentVariable32A( "windir", DIR_Windows.short_name );
 115     SetEnvironmentVariable32A( "winsysdir", DIR_System.short_name );
 116
 117     TRACE(dosfs, "WindowsDir = %s (%s)\n",
 118           DIR_Windows.short_name, DIR_Windows.long_name );
 119     TRACE(dosfs, "SystemDir  = %s (%s)\n",
 120           DIR_System.short_name, DIR_System.long_name );
 121     TRACE(dosfs, "TempDir    = %s (%s)\n",
 122           tmp_dir.short_name, tmp_dir.long_name );
 123     TRACE(dosfs, "Path       = %s\n", path );
 124     TRACE(dosfs, "Cwd        = %c:\\%s\n",
 125           'A' + drive, DRIVE_GetDosCwd( drive ) );
 126
 127     return 1;
 128 }
 129
 130
 131 /***********************************************************************
 132  *           GetTempPath32A   (KERNEL32.292)
 133  */
 134 UINT32 WINAPI GetTempPath32A( UINT32 count, LPSTR path )
 135 {
 136     UINT32 ret;
 137     if (!(ret = GetEnvironmentVariable32A( "TMP", path, count )))
 138         if (!(ret = GetEnvironmentVariable32A( "TEMP", path, count )))
 139             if (!(ret = GetCurrentDirectory32A( count, path )))
 140                 return 0;
 141     if ((ret < count - 1) && (path[ret-1] != '\\'))
 142     {
 143         path[ret++] = '\\';
 144         path[ret]   = '\0';
 145     }
 146     return ret;
 147 }
 148
 149
 150 /***********************************************************************
 151  *           GetTempPath32W   (KERNEL32.293)
 152  */
 153 UINT32 WINAPI GetTempPath32W( UINT32 count, LPWSTR path )
 154 {
 155     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 156     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 157     UINT32 ret;
 158     if (!(ret = GetEnvironmentVariable32W( tmp, path, count )))
 159         if (!(ret = GetEnvironmentVariable32W( temp, path, count )))
 160             if (!(ret = GetCurrentDirectory32W( count, path )))
 161                 return 0;
 162     if ((ret < count - 1) && (path[ret-1] != '\\'))
 163     {
 164         path[ret++] = '\\';
 165         path[ret]   = '\0';
 166     }
 167     return ret;
 168 }
 169
 170
 171 /***********************************************************************
 172  *           DIR_GetWindowsUnixDir
 173  */
 174 UINT32 DIR_GetWindowsUnixDir( LPSTR path, UINT32 count )
 175 {
 176     if (path) lstrcpyn32A( path, DIR_Windows.long_name, count );
 177     return strlen( DIR_Windows.long_name );
 178 }
 179
 180
 181 /***********************************************************************
 182  *           DIR_GetSystemUnixDir
 183  */
 184 UINT32 DIR_GetSystemUnixDir( LPSTR path, UINT32 count )
 185 {
 186     if (path) lstrcpyn32A( path, DIR_System.long_name, count );
 187     return strlen( DIR_System.long_name );
 188 }
 189
 190
 191 /***********************************************************************
 192  *           GetTempDrive   (KERNEL.92)
 193  */
 194 BYTE WINAPI GetTempDrive( BYTE ignored )
 195 {
 196     char buffer[2];
 197     /* FIXME: apparently Windows does something with the ignored byte */
 198     if (!GetTempPath32A( sizeof(buffer), buffer )) buffer[0] = 'C';
 199     return toupper(buffer[0]);
 200 }
 201
 202
 203 UINT32 WINAPI WIN16_GetTempDrive( BYTE ignored )
 204 {
 205     /* A closer look at krnl386.exe shows what the SDK doesn't mention:
 206      *
 207      * returns:
 208      *   AL: driveletter
 209      *   AH: ':'                - yes, some kernel code even does stosw with
 210      *                            the returned AX.
 211      *   DX: 1 for success
 212      */
 213     return MAKELONG( GetTempDrive(ignored) | (':' << 8), 1 );
 214 }
 215
 216
 217 /***********************************************************************
 218  *           GetWindowsDirectory16   (KERNEL.134)
 219  */
 220 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 221 {
 222     return (UINT16)GetWindowsDirectory32A( path, count );
 223 }
 224
 225
 226 /***********************************************************************
 227  *           GetWindowsDirectory32A   (KERNEL32.311)
 228  */
 229 UINT32 WINAPI GetWindowsDirectory32A( LPSTR path, UINT32 count )
 230 {
 231     if (path) lstrcpyn32A( path, DIR_Windows.short_name, count );
 232     return strlen( DIR_Windows.short_name );
 233 }
 234
 235
 236 /***********************************************************************
 237  *           GetWindowsDirectory32W   (KERNEL32.312)
 238  */
 239 UINT32 WINAPI GetWindowsDirectory32W( LPWSTR path, UINT32 count )
 240 {
 241     if (path) lstrcpynAtoW( path, DIR_Windows.short_name, count );
 242     return strlen( DIR_Windows.short_name );
 243 }
 244
 245
 246 /***********************************************************************
 247  *           GetSystemDirectory16   (KERNEL.135)
 248  */
 249 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 250 {
 251     return (UINT16)GetSystemDirectory32A( path, count );
 252 }
 253
 254
 255 /***********************************************************************
 256  *           GetSystemDirectory32A   (KERNEL32.282)
 257  */
 258 UINT32 WINAPI GetSystemDirectory32A( LPSTR path, UINT32 count )
 259 {
 260     if (path) lstrcpyn32A( path, DIR_System.short_name, count );
 261     return strlen( DIR_System.short_name );
 262 }
 263
 264
 265 /***********************************************************************
 266  *           GetSystemDirectory32W   (KERNEL32.283)
 267  */
 268 UINT32 WINAPI GetSystemDirectory32W( LPWSTR path, UINT32 count )
 269 {
 270     if (path) lstrcpynAtoW( path, DIR_System.short_name, count );
 271     return strlen( DIR_System.short_name );
 272 }
 273
 274
 275 /***********************************************************************
 276  *           CreateDirectory16   (KERNEL.144)
 277  */
 278 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 279 {
 280     TRACE(file,"(%s,%p)\n", path, dummy );
 281     return (BOOL16)CreateDirectory32A( path, NULL );
 282 }
 283
 284
 285 /***********************************************************************
 286  *           CreateDirectory32A   (KERNEL32.39)
 287  */
 288 BOOL32 WINAPI CreateDirectory32A( LPCSTR path,
 289                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 290 {
 291     DOS_FULL_NAME full_name;
 292
 293     TRACE(file, "(%s,%p)\n", path, lpsecattribs );
 294     if (DOSFS_GetDevice( path ))
 295     {
 296         TRACE(file, "cannot use device '%s'!\n",path);
 297         DOS_ERROR( ER_AccessDenied, EC_AccessDenied, SA_Abort, EL_Disk );
 298         return FALSE;
 299     }
 300     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 301     if ((mkdir( full_name.long_name, 0777 ) == -1) && (errno != EEXIST))
 302     {
 303       WARN (file, "Errno %i trying to create directory %s.\n", errno, full_name.long_name);
 304         FILE_SetDosError();
 305         return FALSE;
 306     }
 307     return TRUE;
 308 }
 309
 310
 311 /***********************************************************************
 312  *           CreateDirectory32W   (KERNEL32.42)
 313  */
 314 BOOL32 WINAPI CreateDirectory32W( LPCWSTR path,
 315                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 316 {
 317     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 318     BOOL32 ret = CreateDirectory32A( xpath, lpsecattribs );
 319     HeapFree( GetProcessHeap(), 0, xpath );
 320     return ret;
 321 }
 322
 323
 324 /***********************************************************************
 325  *           CreateDirectoryEx32A   (KERNEL32.40)
 326  */
 327 BOOL32 WINAPI CreateDirectoryEx32A( LPCSTR template, LPCSTR path,
 328                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 329 {
 330     return CreateDirectory32A(path,lpsecattribs);
 331 }
 332
 333
 334 /***********************************************************************
 335  *           CreateDirectoryEx32W   (KERNEL32.41)
 336  */
 337 BOOL32 WINAPI CreateDirectoryEx32W( LPCWSTR template, LPCWSTR path,
 338                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 339 {
 340     return CreateDirectory32W(path,lpsecattribs);
 341 }
 342
 343
 344 /***********************************************************************
 345  *           RemoveDirectory16   (KERNEL)
 346  */
 347 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 348 {
 349     return (BOOL16)RemoveDirectory32A( path );
 350 }
 351
 352
 353 /***********************************************************************
 354  *           RemoveDirectory32A   (KERNEL32.437)
 355  */
 356 BOOL32 WINAPI RemoveDirectory32A( LPCSTR path )
 357 {
 358     DOS_FULL_NAME full_name;
 359
 360     TRACE(file, "'%s'\n", path );
 361
 362     if (DOSFS_GetDevice( path ))
 363     {
 364         TRACE(file, "cannot remove device '%s'!\n", path);
 365         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 366         return FALSE;
 367     }
 368     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 369     if (rmdir( full_name.long_name ) == -1)
 370     {
 371         FILE_SetDosError();
 372         return FALSE;
 373     }
 374     return TRUE;
 375 }
 376
 377
 378 /***********************************************************************
 379  *           RemoveDirectory32W   (KERNEL32.438)
 380  */
 381 BOOL32 WINAPI RemoveDirectory32W( LPCWSTR path )
 382 {
 383     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 384     BOOL32 ret = RemoveDirectory32A( xpath );
 385     HeapFree( GetProcessHeap(), 0, xpath );
 386     return ret;
 387 }
 388
 389
 390 /***********************************************************************
 391  *           DIR_TryPath
 392  *
 393  * Helper function for DIR_SearchPath.
 394  */
 395 static BOOL32 DIR_TryPath( const DOS_FULL_NAME *dir, LPCSTR name,
 396                            DOS_FULL_NAME *full_name )
 397 {
 398     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 399     LPSTR p_s = full_name->short_name + strlen(dir->short_name) + 1;
 400
 401     if ((p_s >= full_name->short_name + sizeof(full_name->short_name) - 14) ||
 402         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 403     {
 404         DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
 405         return FALSE;
 406     }
 407     if (!DOSFS_FindUnixName( dir->long_name, name, p_l,
 408                    sizeof(full_name->long_name) - (p_l - full_name->long_name),
 409                    p_s, DRIVE_GetFlags( dir->drive ) ))
 410         return FALSE;
 411     strcpy( full_name->long_name, dir->long_name );
 412     p_l[-1] = '/';
 413     strcpy( full_name->short_name, dir->short_name );
 414     p_s[-1] = '\\';
 415     return TRUE;
 416 }
 417
 418
 419 /***********************************************************************
 420  *           DIR_TryEnvironmentPath
 421  *
 422  * Helper function for DIR_SearchPath.
 423  */
 424 static BOOL32 DIR_TryEnvironmentPath( LPCSTR name, DOS_FULL_NAME *full_name )
 425 {
 426     LPSTR path, next, buffer;
 427     BOOL32 ret = FALSE;
 428     INT32 len = strlen(name);
 429     DWORD size = GetEnvironmentVariable32A( "PATH", NULL, 0 );
 430
 431     if (!size) return FALSE;
 432     if (!(path = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 433     if (!GetEnvironmentVariable32A( "PATH", path, size )) goto done;
 434     next = path;
 435     while (!ret && next)
 436     {
 437         LPSTR cur = next;
 438         while (*cur == ';') cur++;
 439         if (!*cur) break;
 440         next = strchr( cur, ';' );
 441         if (next) *next++ = '\0';
 442         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(cur) + len + 2)))
 443             goto done;
 444         strcpy( buffer, cur );
 445         strcat( buffer, "\\" );
 446         strcat( buffer, name );
 447         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 448         HeapFree( GetProcessHeap(), 0, buffer );
 449     }
 450
 451 done:
 452     HeapFree( GetProcessHeap(), 0, path );
 453     return ret;
 454 }
 455
 456
 457 /***********************************************************************
 458  *           DIR_TryModulePath
 459  *
 460  * Helper function for DIR_SearchPath.
 461  */
 462 static BOOL32 DIR_TryModulePath( LPCSTR name, DOS_FULL_NAME *full_name )
 463 {
 464     PDB32       *pdb = PROCESS_Current();
 465
 466     /* FIXME: for now, GetModuleFileName32A can't return more */
 467     /* than OFS_MAXPATHNAME. This may change with Win32. */
 468
 469     char buffer[OFS_MAXPATHNAME];
 470     LPSTR p;
 471
 472     if (pdb->flags & PDB32_WIN16_PROC) {
 473         if (!GetCurrentTask()) return FALSE;
 474         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 475                 buffer[0]='\0';
 476     } else {
 477         if (!GetModuleFileName32A( 0, buffer, sizeof(buffer) ))
 478                 buffer[0]='\0';
 479     }
 480     if (!(p = strrchr( buffer, '\\' ))) return FALSE;
 481     if (sizeof(buffer) - (++p - buffer) <= strlen(name)) return FALSE;
 482     strcpy( p, name );
 483     return DOSFS_GetFullName( buffer, TRUE, full_name );
 484 }
 485
 486
 487 /***********************************************************************
 488  *           DIR_SearchPath
 489  *
 490  * Implementation of SearchPath32A. 'win32' specifies whether the search
 491  * order is Win16 (module path last) or Win32 (module path first).
 492  *
 493  * FIXME: should return long path names.
 494  */
 495 DWORD DIR_SearchPath( LPCSTR path, LPCSTR name, LPCSTR ext,
 496                       DOS_FULL_NAME *full_name, BOOL32 win32 )
 497 {
 498     DWORD len;
 499     LPCSTR p;
 500     LPSTR tmp = NULL;
 501     BOOL32 ret = TRUE;
 502
 503     /* First check the supplied parameters */
 504
 505     p = strrchr( name, '.' );
 506     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 507         ext = NULL;  /* Ignore the specified extension */
 508     if ((*name && (name[1] == ':')) ||
 509         strchr( name, '/' ) || strchr( name, '\\' ))
 510         path = NULL;  /* Ignore path if name already contains a path */
 511     if (path && !*path) path = NULL;  /* Ignore empty path */
 512
 513     len = strlen(name);
 514     if (ext) len += strlen(ext);
 515     if (path) len += strlen(path) + 1;
 516
 517     /* Allocate a buffer for the file name and extension */
 518
 519     if (path || ext)
 520     {
 521         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 522         {
 523             SetLastError( ERROR_OUTOFMEMORY );
 524             return 0;
 525         }
 526         if (path)
 527         {
 528             strcpy( tmp, path );
 529             strcat( tmp, "\\" );
 530             strcat( tmp, name );
 531         }
 532         else strcpy( tmp, name );
 533         if (ext) strcat( tmp, ext );
 534         name = tmp;
 535     }
 536
 537     /* If we have an explicit path, everything's easy */
 538
 539     if (path || (*name && (name[1] == ':')) ||
 540         strchr( name, '/' ) || strchr( name, '\\' ))
 541     {
 542         ret = DOSFS_GetFullName( name, TRUE, full_name );
 543         goto done;
 544     }
 545
 546     /* Try the path of the current executable (for Win32 search order) */
 547
 548     if (win32 && DIR_TryModulePath( name, full_name )) goto done;
 549
 550     /* Try the current directory */
 551
 552     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 553
 554     /* Try the Windows directory */
 555
 556     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 557         goto done;
 558
 559     /* Try the Windows system directory */
 560
 561     if (DIR_TryPath( &DIR_System, name, full_name ))
 562         goto done;
 563
 564     /* Try the path of the current executable (for Win16 search order) */
 565
 566     if (!win32 && DIR_TryModulePath( name, full_name )) goto done;
 567
 568     /* Try all directories in path */
 569
 570     ret = DIR_TryEnvironmentPath( name, full_name );
 571
 572 done:
 573     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 574     return ret;
 575 }
 576
 577
 578 /***********************************************************************
 579  * SearchPath32A [KERNEL32.447]
 580  *
 581  * Searches for a specified file in the search path.
 582  *
 583  * PARAMS
 584  *    path      [I] Path to search
 585  *    name      [I] Filename to search for.
 586  *    ext       [I] File extension to append to file name. The first
 587  *                  character must be a period. This parameter is
 588  *                  specified only if the filename given does not
 589  *                  contain an extension.
 590  *    buflen    [I] size of buffer, in characters
 591  *    buffer    [O] buffer for found filename
 592  *    lastpart  [O] address of pointer to last used character in
 593  *                  buffer (the final '\')
 594  *
 595  * RETURNS
 596  *    Success: length of string copied into buffer, not including
 597  *             terminating null character. If the filename found is
 598  *             longer than the length of the buffer, the length of the
 599  *             filename is returned.
 600  *    Failure: Zero
 601  *
 602  * NOTES
 603  *    Should call SetLastError(but currently doesn't).
 604  */
 605 DWORD WINAPI SearchPath32A( LPCSTR path, LPCSTR name, LPCSTR ext, DWORD buflen,
 606                             LPSTR buffer, LPSTR *lastpart )
 607 {
 608     LPSTR p, res;
 609     DOS_FULL_NAME full_name;
 610
 611     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE )) return 0;
 612     lstrcpyn32A( buffer, full_name.short_name, buflen );
 613     res = full_name.long_name +
 614               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 615     while (*res == '/') res++;
 616     if (buflen)
 617     {
 618         if (buflen > 3) lstrcpyn32A( buffer + 3, res, buflen - 3 );
 619         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 620         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 621     }
 622     TRACE(dosfs, "Returning %d\n", (*res ? strlen(res) + 2 : 3));
 623     return *res ? strlen(res) + 2 : 3;
 624 }
 625
 626
 627 /***********************************************************************
 628  *           SearchPath32W   (KERNEL32.448)
 629  */
 630 DWORD WINAPI SearchPath32W( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 631                             DWORD buflen, LPWSTR buffer, LPWSTR *lastpart )
 632 {
 633     LPWSTR p;
 634     LPSTR res;
 635     DOS_FULL_NAME full_name;
 636
 637     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 638     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
 639     LPSTR extA  = HEAP_strdupWtoA( GetProcessHeap(), 0, ext );
 640     DWORD ret = DIR_SearchPath( pathA, nameA, extA, &full_name, TRUE );
 641     HeapFree( GetProcessHeap(), 0, extA );
 642     HeapFree( GetProcessHeap(), 0, nameA );
 643     HeapFree( GetProcessHeap(), 0, pathA );
 644     if (!ret) return 0;
 645
 646     lstrcpynAtoW( buffer, full_name.short_name, buflen );
 647     res = full_name.long_name +
 648               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 649     while (*res == '/') res++;
 650     if (buflen)
 651     {
 652         if (buflen > 3) lstrcpynAtoW( buffer + 3, res, buflen - 3 );
 653         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 654         if (lastpart)
 655         {
 656             for (p = *lastpart = buffer; *p; p++)
 657                 if (*p == '\\') *lastpart = p + 1;
 658         }
 659     }
 660     return *res ? strlen(res) + 2 : 3;
 661 }
 662
 663