files/directory.c

   1 /*
   2  * DOS directories functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <ctype.h>
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 #include <unistd.h>
  16 #include <errno.h>
  17 #ifdef HAVE_SYS_ERRNO_H
  18 #include <sys/errno.h>
  19 #endif
  20
  21 #include "winbase.h"
  22 #include "wine/winbase16.h"
  23 #include "windef.h"
  24 #include "wingdi.h"
  25 #include "wine/winuser16.h"
  26 #include "winerror.h"
  27 #include "drive.h"
  28 #include "file.h"
  29 #include "heap.h"
  30 #include "msdos.h"
  31 #include "options.h"
  32 #include "debugtools.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(dosfs);
  35 DECLARE_DEBUG_CHANNEL(file);
  36
  37 static DOS_FULL_NAME DIR_Windows;
  38 static DOS_FULL_NAME DIR_System;
  39
  40
  41 /***********************************************************************
  42  *           DIR_GetPath
  43  *
  44  * Get a path name from the wine.ini file and make sure it is valid.
  45  */
  46 static int DIR_GetPath( const char *keyname, const char *defval,
  47                         DOS_FULL_NAME *full_name, BOOL warn )
  48 {
  49     char path[MAX_PATHNAME_LEN];
  50     BY_HANDLE_FILE_INFORMATION info;
  51     const char *mess = "does not exist";
  52
  53     PROFILE_GetWineIniString( "wine", keyname, defval, path, sizeof(path) );
  54     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  55         (!FILE_Stat( full_name->long_name, &info ) && (mess=strerror(errno)))||
  56         (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && (mess="not a directory")))
  57     {
  58         if (warn)
  59            MESSAGE("Invalid path '%s' for %s directory: %s\n", path, keyname, mess);
  60         return 0;
  61     }
  62     return 1;
  63 }
  64
  65
  66 /***********************************************************************
  67  *           DIR_Init
  68  */
  69 int DIR_Init(void)
  70 {
  71     char path[MAX_PATHNAME_LEN];
  72     DOS_FULL_NAME tmp_dir, profile_dir;
  73     int drive;
  74     const char *cwd;
  75
  76     if (!getcwd( path, MAX_PATHNAME_LEN ))
  77     {
  78         perror( "Could not get current directory" );
  79         return 0;
  80     }
  81     cwd = path;
  82     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
  83     {
  84         MESSAGE("Warning: could not find wine config [Drive x] entry "
  85             "for current working directory %s; "
  86             "starting in windows directory.\n", cwd );
  87     }
  88     else
  89     {
  90         DRIVE_SetCurrentDrive( drive );
  91         DRIVE_Chdir( drive, cwd );
  92     }
  93
  94     if (!(DIR_GetPath( "windows", "c:\\windows", &DIR_Windows, TRUE )) ||
  95         !(DIR_GetPath( "system", "c:\\windows\\system", &DIR_System, TRUE )) ||
  96         !(DIR_GetPath( "temp", "c:\\windows", &tmp_dir, TRUE )))
  97     {
  98         PROFILE_UsageWineIni();
  99         return 0;
 100     }
 101     if (-1 == access( tmp_dir.long_name, W_OK ))
 102     {
 103         if (errno==EACCES)
 104         {
 105                 MESSAGE("Warning: the temporary directory '%s' (specified in wine configuration file) is not writeable.\n", tmp_dir.long_name);
 106                 PROFILE_UsageWineIni();
 107         }
 108         else
 109                 MESSAGE("Warning: access to temporary directory '%s' failed (%s).\n",
 110                     tmp_dir.long_name, strerror(errno));
 111     }
 112
 113     if (drive == -1)
 114     {
 115         drive = DIR_Windows.drive;
 116         DRIVE_SetCurrentDrive( drive );
 117         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 118     }
 119
 120     PROFILE_GetWineIniString("wine", "path", "c:\\windows;c:\\windows\\system",
 121                              path, sizeof(path) );
 122     if (strchr(path, '/'))
 123     {
 124         MESSAGE("Fix your wine config to use DOS drive syntax in [wine] 'Path=' statement! (no '/' allowed)\n");
 125         PROFILE_UsageWineIni();
 126         ExitProcess(1);
 127     }
 128
 129     /* Set the environment variables */
 130
 131     SetEnvironmentVariableA( "PATH", path );
 132     SetEnvironmentVariableA( "TEMP", tmp_dir.short_name );
 133     SetEnvironmentVariableA( "TMP", tmp_dir.short_name );
 134     SetEnvironmentVariableA( "windir", DIR_Windows.short_name );
 135     SetEnvironmentVariableA( "winsysdir", DIR_System.short_name );
 136
 137     /* set COMSPEC only if it doesn't exist already */
 138     if (!GetEnvironmentVariableA( "COMSPEC", NULL, 0 ))
 139         SetEnvironmentVariableA( "COMSPEC", "c:\\command.com" );
 140
 141     TRACE("WindowsDir = %s (%s)\n",
 142           DIR_Windows.short_name, DIR_Windows.long_name );
 143     TRACE("SystemDir  = %s (%s)\n",
 144           DIR_System.short_name, DIR_System.long_name );
 145     TRACE("TempDir    = %s (%s)\n",
 146           tmp_dir.short_name, tmp_dir.long_name );
 147     TRACE("Path       = %s\n", path );
 148     TRACE("Cwd        = %c:\\%s\n",
 149           'A' + drive, DRIVE_GetDosCwd( drive ) );
 150
 151     if (DIR_GetPath( "profile", "", &profile_dir, FALSE ))
 152     {
 153         TRACE("USERPROFILE= %s\n", profile_dir.short_name );
 154         SetEnvironmentVariableA( "USERPROFILE", profile_dir.short_name );
 155     }
 156
 157     TRACE("SYSTEMROOT = %s\n", DIR_Windows.short_name );
 158     SetEnvironmentVariableA( "SYSTEMROOT", DIR_Windows.short_name );
 159
 160     return 1;
 161 }
 162
 163
 164 /***********************************************************************
 165  *           GetTempPathA   (KERNEL32.@)
 166  */
 167 UINT WINAPI GetTempPathA( UINT count, LPSTR path )
 168 {
 169     UINT ret;
 170     if (!(ret = GetEnvironmentVariableA( "TMP", path, count )))
 171         if (!(ret = GetEnvironmentVariableA( "TEMP", path, count )))
 172             if (!(ret = GetCurrentDirectoryA( count, path )))
 173                 return 0;
 174     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 175     {
 176         path[ret++] = '\\';
 177         path[ret]   = '\0';
 178     }
 179     return ret;
 180 }
 181
 182
 183 /***********************************************************************
 184  *           GetTempPathW   (KERNEL32.@)
 185  */
 186 UINT WINAPI GetTempPathW( UINT count, LPWSTR path )
 187 {
 188     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 189     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 190     UINT ret;
 191     if (!(ret = GetEnvironmentVariableW( tmp, path, count )))
 192         if (!(ret = GetEnvironmentVariableW( temp, path, count )))
 193             if (!(ret = GetCurrentDirectoryW( count, path )))
 194                 return 0;
 195     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 196     {
 197         path[ret++] = '\\';
 198         path[ret]   = '\0';
 199     }
 200     return ret;
 201 }
 202
 203
 204 /***********************************************************************
 205  *           DIR_GetWindowsUnixDir
 206  */
 207 UINT DIR_GetWindowsUnixDir( LPSTR path, UINT count )
 208 {
 209     if (path) lstrcpynA( path, DIR_Windows.long_name, count );
 210     return strlen( DIR_Windows.long_name );
 211 }
 212
 213
 214 /***********************************************************************
 215  *           DIR_GetSystemUnixDir
 216  */
 217 UINT DIR_GetSystemUnixDir( LPSTR path, UINT count )
 218 {
 219     if (path) lstrcpynA( path, DIR_System.long_name, count );
 220     return strlen( DIR_System.long_name );
 221 }
 222
 223
 224 /***********************************************************************
 225  *           GetTempDrive   (KERNEL.92)
 226  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 227  *
 228  * returns:
 229  *   AL: driveletter
 230  *   AH: ':'            - yes, some kernel code even does stosw with
 231  *                            the returned AX.
 232  *   DX: 1 for success
 233  */
 234 UINT WINAPI GetTempDrive( BYTE ignored )
 235 {
 236     char *buffer;
 237     BYTE ret;
 238     UINT len = GetTempPathA( 0, NULL );
 239
 240     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len + 1 )) )
 241         ret = DRIVE_GetCurrentDrive() + 'A';
 242     else
 243     {
 244         /* FIXME: apparently Windows does something with the ignored byte */
 245         if (!GetTempPathA( len, buffer )) buffer[0] = 'C';
 246         ret = toupper(buffer[0]);
 247         HeapFree( GetProcessHeap(), 0, buffer );
 248     }
 249     return MAKELONG( ret | (':' << 8), 1 );
 250 }
 251
 252
 253 /***********************************************************************
 254  *           GetWindowsDirectory   (KERNEL.134)
 255  */
 256 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 257 {
 258     return (UINT16)GetWindowsDirectoryA( path, count );
 259 }
 260
 261
 262 /***********************************************************************
 263  *           GetWindowsDirectoryA   (KERNEL32.@)
 264  *
 265  * See comment for GetWindowsDirectoryW.
 266  */
 267 UINT WINAPI GetWindowsDirectoryA( LPSTR path, UINT count )
 268 {
 269     UINT len = strlen( DIR_Windows.short_name ) + 1;
 270     if (path && count >= len)
 271     {
 272         strcpy( path, DIR_Windows.short_name );
 273         len--;
 274     }
 275     return len;
 276 }
 277
 278
 279 /***********************************************************************
 280  *           GetWindowsDirectoryW   (KERNEL32.@)
 281  *
 282  * Return value:
 283  * If buffer is large enough to hold full path and terminating '\0' character
 284  * function copies path to buffer and returns length of the path without '\0'.
 285  * Otherwise function returns required size including '\0' character and
 286  * does not touch the buffer.
 287  */
 288 UINT WINAPI GetWindowsDirectoryW( LPWSTR path, UINT count )
 289 {
 290     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, NULL, 0 );
 291     if (path && count >= len)
 292     {
 293         MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, path, count );
 294         len--;
 295     }
 296     return len;
 297 }
 298
 299
 300 /***********************************************************************
 301  *           GetSystemWindowsDirectoryA   (KERNEL32.@) W2K, TS4.0SP4
 302  */
 303 UINT WINAPI GetSystemWindowsDirectoryA( LPSTR path, UINT count )
 304 {
 305     return GetWindowsDirectoryA( path, count );
 306 }
 307
 308
 309 /***********************************************************************
 310  *           GetSystemWindowsDirectoryW   (KERNEL32.@) W2K, TS4.0SP4
 311  */
 312 UINT WINAPI GetSystemWindowsDirectoryW( LPWSTR path, UINT count )
 313 {
 314     return GetWindowsDirectoryW( path, count );
 315 }
 316
 317
 318 /***********************************************************************
 319  *           GetSystemDirectory   (KERNEL.135)
 320  */
 321 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 322 {
 323     return (UINT16)GetSystemDirectoryA( path, count );
 324 }
 325
 326
 327 /***********************************************************************
 328  *           GetSystemDirectoryA   (KERNEL32.@)
 329  *
 330  * See comment for GetWindowsDirectoryW.
 331  */
 332 UINT WINAPI GetSystemDirectoryA( LPSTR path, UINT count )
 333 {
 334     UINT len = strlen( DIR_System.short_name ) + 1;
 335     if (path && count >= len)
 336     {
 337         strcpy( path, DIR_System.short_name );
 338         len--;
 339     }
 340     return len;
 341 }
 342
 343
 344 /***********************************************************************
 345  *           GetSystemDirectoryW   (KERNEL32.@)
 346  *
 347  * See comment for GetWindowsDirectoryW.
 348  */
 349 UINT WINAPI GetSystemDirectoryW( LPWSTR path, UINT count )
 350 {
 351     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, NULL, 0 );
 352     if (path && count >= len)
 353     {
 354         MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, path, count );
 355         len--;
 356     }
 357     return len;
 358 }
 359
 360
 361 /***********************************************************************
 362  *           CreateDirectory   (KERNEL.144)
 363  */
 364 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 365 {
 366     TRACE_(file)("(%s,%p)\n", path, dummy );
 367     return (BOOL16)CreateDirectoryA( path, NULL );
 368 }
 369
 370
 371 /***********************************************************************
 372  *           CreateDirectoryA   (KERNEL32.@)
 373  * RETURNS:
 374  *      TRUE : success
 375  *      FALSE : failure
 376  *              ERROR_DISK_FULL:        on full disk
 377  *              ERROR_ALREADY_EXISTS:   if directory name exists (even as file)
 378  *              ERROR_ACCESS_DENIED:    on permission problems
 379  *              ERROR_FILENAME_EXCED_RANGE: too long filename(s)
 380  */
 381 BOOL WINAPI CreateDirectoryA( LPCSTR path,
 382                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 383 {
 384     DOS_FULL_NAME full_name;
 385
 386     TRACE_(file)("(%s,%p)\n", path, lpsecattribs );
 387     if (DOSFS_GetDevice( path ))
 388     {
 389         TRACE_(file)("cannot use device '%s'!\n",path);
 390         SetLastError( ERROR_ACCESS_DENIED );
 391         return FALSE;
 392     }
 393     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 394     if (mkdir( full_name.long_name, 0777 ) == -1) {
 395         WARN_(file)("Error '%s' trying to create directory '%s'\n", strerror(errno), full_name.long_name);
 396         /* the FILE_SetDosError() generated error codes don't match the
 397          * CreateDirectory ones for some errnos */
 398         switch (errno) {
 399         case EEXIST: SetLastError(ERROR_ALREADY_EXISTS); break;
 400         case ENOSPC: SetLastError(ERROR_DISK_FULL); break;
 401         default: FILE_SetDosError();break;
 402         }
 403         return FALSE;
 404     }
 405     return TRUE;
 406 }
 407
 408
 409 /***********************************************************************
 410  *           CreateDirectoryW   (KERNEL32.@)
 411  */
 412 BOOL WINAPI CreateDirectoryW( LPCWSTR path,
 413                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 414 {
 415     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 416     BOOL ret = CreateDirectoryA( xpath, lpsecattribs );
 417     HeapFree( GetProcessHeap(), 0, xpath );
 418     return ret;
 419 }
 420
 421
 422 /***********************************************************************
 423  *           CreateDirectoryExA   (KERNEL32.@)
 424  */
 425 BOOL WINAPI CreateDirectoryExA( LPCSTR template, LPCSTR path,
 426                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 427 {
 428     return CreateDirectoryA(path,lpsecattribs);
 429 }
 430
 431
 432 /***********************************************************************
 433  *           CreateDirectoryExW   (KERNEL32.@)
 434  */
 435 BOOL WINAPI CreateDirectoryExW( LPCWSTR template, LPCWSTR path,
 436                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 437 {
 438     return CreateDirectoryW(path,lpsecattribs);
 439 }
 440
 441
 442 /***********************************************************************
 443  *           RemoveDirectory   (KERNEL.145)
 444  */
 445 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 446 {
 447     return (BOOL16)RemoveDirectoryA( path );
 448 }
 449
 450
 451 /***********************************************************************
 452  *           RemoveDirectoryA   (KERNEL32.@)
 453  */
 454 BOOL WINAPI RemoveDirectoryA( LPCSTR path )
 455 {
 456     DOS_FULL_NAME full_name;
 457
 458     TRACE_(file)("'%s'\n", path );
 459
 460     if (DOSFS_GetDevice( path ))
 461     {
 462         TRACE_(file)("cannot remove device '%s'!\n", path);
 463         SetLastError( ERROR_FILE_NOT_FOUND );
 464         return FALSE;
 465     }
 466     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 467     if (rmdir( full_name.long_name ) == -1)
 468     {
 469         FILE_SetDosError();
 470         return FALSE;
 471     }
 472     return TRUE;
 473 }
 474
 475
 476 /***********************************************************************
 477  *           RemoveDirectoryW   (KERNEL32.@)
 478  */
 479 BOOL WINAPI RemoveDirectoryW( LPCWSTR path )
 480 {
 481     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 482     BOOL ret = RemoveDirectoryA( xpath );
 483     HeapFree( GetProcessHeap(), 0, xpath );
 484     return ret;
 485 }
 486
 487
 488 /***********************************************************************
 489  *           DIR_TryPath
 490  *
 491  * Helper function for DIR_SearchPath.
 492  */
 493 static BOOL DIR_TryPath( const DOS_FULL_NAME *dir, LPCSTR name,
 494                            DOS_FULL_NAME *full_name )
 495 {
 496     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 497     LPSTR p_s = full_name->short_name + strlen(dir->short_name) + 1;
 498
 499     if ((p_s >= full_name->short_name + sizeof(full_name->short_name) - 14) ||
 500         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 501     {
 502         SetLastError( ERROR_PATH_NOT_FOUND );
 503         return FALSE;
 504     }
 505     if (!DOSFS_FindUnixName( dir->long_name, name, p_l,
 506                    sizeof(full_name->long_name) - (p_l - full_name->long_name),
 507                    p_s, !(DRIVE_GetFlags(dir->drive) & DRIVE_CASE_SENSITIVE) ))
 508         return FALSE;
 509     strcpy( full_name->long_name, dir->long_name );
 510     p_l[-1] = '/';
 511     strcpy( full_name->short_name, dir->short_name );
 512     p_s[-1] = '\\';
 513     return TRUE;
 514 }
 515
 516
 517 /***********************************************************************
 518  *           DIR_TryEnvironmentPath
 519  *
 520  * Helper function for DIR_SearchPath.
 521  * Search in the specified path, or in $PATH if NULL.
 522  */
 523 static BOOL DIR_TryEnvironmentPath( LPCSTR name, DOS_FULL_NAME *full_name, LPCSTR envpath )
 524 {
 525     LPSTR path, next, buffer;
 526     BOOL ret = FALSE;
 527     INT len = strlen(name);
 528     DWORD size;
 529
 530     size = envpath ? strlen(envpath)+1 : GetEnvironmentVariableA( "PATH", NULL, 0 );
 531     if (!size) return FALSE;
 532     if (!(path = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 533     if (envpath) strcpy( path, envpath );
 534     else if (!GetEnvironmentVariableA( "PATH", path, size )) goto done;
 535     next = path;
 536     while (!ret && next)
 537     {
 538         LPSTR cur = next;
 539         while (*cur == ';') cur++;
 540         if (!*cur) break;
 541         next = strchr( cur, ';' );
 542         if (next) *next++ = '\0';
 543         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(cur) + len + 2)))
 544             goto done;
 545         strcpy( buffer, cur );
 546         strcat( buffer, "\\" );
 547         strcat( buffer, name );
 548         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 549         HeapFree( GetProcessHeap(), 0, buffer );
 550     }
 551
 552 done:
 553     HeapFree( GetProcessHeap(), 0, path );
 554     return ret;
 555 }
 556
 557
 558 /***********************************************************************
 559  *           DIR_TryModulePath
 560  *
 561  * Helper function for DIR_SearchPath.
 562  */
 563 static BOOL DIR_TryModulePath( LPCSTR name, DOS_FULL_NAME *full_name, BOOL win32 )
 564 {
 565     /* FIXME: for now, GetModuleFileNameA can't return more */
 566     /* than OFS_MAXPATHNAME. This may change with Win32. */
 567
 568     char buffer[OFS_MAXPATHNAME];
 569     LPSTR p;
 570
 571     if (!win32)
 572     {
 573         if (!GetCurrentTask()) return FALSE;
 574         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 575                 buffer[0]='\0';
 576     } else {
 577         if (!GetModuleFileNameA( 0, buffer, sizeof(buffer) ))
 578                 buffer[0]='\0';
 579     }
 580     if (!(p = strrchr( buffer, '\\' ))) return FALSE;
 581     if (sizeof(buffer) - (++p - buffer) <= strlen(name)) return FALSE;
 582     strcpy( p, name );
 583     return DOSFS_GetFullName( buffer, TRUE, full_name );
 584 }
 585
 586
 587 /***********************************************************************
 588  *           DIR_SearchPath
 589  *
 590  * Implementation of SearchPathA. 'win32' specifies whether the search
 591  * order is Win16 (module path last) or Win32 (module path first).
 592  *
 593  * FIXME: should return long path names.
 594  */
 595 DWORD DIR_SearchPath( LPCSTR path, LPCSTR name, LPCSTR ext,
 596                       DOS_FULL_NAME *full_name, BOOL win32 )
 597 {
 598     LPCSTR p;
 599     LPSTR tmp = NULL;
 600     BOOL ret = TRUE;
 601
 602     /* First check the supplied parameters */
 603
 604     p = strrchr( name, '.' );
 605     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 606         ext = NULL;  /* Ignore the specified extension */
 607     if (FILE_contains_path (name))
 608         path = NULL;  /* Ignore path if name already contains a path */
 609     if (path && !*path) path = NULL;  /* Ignore empty path */
 610
 611     /* Allocate a buffer for the file name and extension */
 612
 613     if (ext)
 614     {
 615         DWORD len = strlen(name) + strlen(ext);
 616         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 617         {
 618             SetLastError( ERROR_OUTOFMEMORY );
 619             return 0;
 620         }
 621         strcpy( tmp, name );
 622         strcat( tmp, ext );
 623         name = tmp;
 624     }
 625
 626     /* If the name contains an explicit path, everything's easy */
 627
 628     if (FILE_contains_path(name))
 629     {
 630         ret = DOSFS_GetFullName( name, TRUE, full_name );
 631         goto done;
 632     }
 633
 634     /* Search in the specified path */
 635
 636     if (path)
 637     {
 638         ret = DIR_TryEnvironmentPath( name, full_name, path );
 639         goto done;
 640     }
 641
 642     /* Try the path of the current executable (for Win32 search order) */
 643
 644     if (win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 645
 646     /* Try the current directory */
 647
 648     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 649
 650     /* Try the Windows system directory */
 651
 652     if (DIR_TryPath( &DIR_System, name, full_name ))
 653         goto done;
 654
 655     /* Try the Windows directory */
 656
 657     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 658         goto done;
 659
 660     /* Try the path of the current executable (for Win16 search order) */
 661
 662     if (!win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 663
 664     /* Try all directories in path */
 665
 666     ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 667
 668 done:
 669     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 670     return ret;
 671 }
 672
 673
 674 /***********************************************************************
 675  * SearchPathA [KERNEL32.@]
 676  *
 677  * Searches for a specified file in the search path.
 678  *
 679  * PARAMS
 680  *    path      [I] Path to search
 681  *    name      [I] Filename to search for.
 682  *    ext       [I] File extension to append to file name. The first
 683  *                  character must be a period. This parameter is
 684  *                  specified only if the filename given does not
 685  *                  contain an extension.
 686  *    buflen    [I] size of buffer, in characters
 687  *    buffer    [O] buffer for found filename
 688  *    lastpart  [O] address of pointer to last used character in
 689  *                  buffer (the final '\')
 690  *
 691  * RETURNS
 692  *    Success: length of string copied into buffer, not including
 693  *             terminating null character. If the filename found is
 694  *             longer than the length of the buffer, the length of the
 695  *             filename is returned.
 696  *    Failure: Zero
 697  *
 698  * NOTES
 699  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 700  *    (tested on NT 4.0)
 701  */
 702 DWORD WINAPI SearchPathA( LPCSTR path, LPCSTR name, LPCSTR ext, DWORD buflen,
 703                             LPSTR buffer, LPSTR *lastpart )
 704 {
 705     LPSTR p, res;
 706     DOS_FULL_NAME full_name;
 707
 708     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE ))
 709     {
 710         SetLastError(ERROR_FILE_NOT_FOUND);
 711         return 0;
 712     }
 713     lstrcpynA( buffer, full_name.short_name, buflen );
 714     res = full_name.long_name +
 715               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 716     while (*res == '/') res++;
 717     if (buflen)
 718     {
 719         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 720         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 721         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 722     }
 723     TRACE("Returning %d\n", strlen(res) + 3 );
 724     return strlen(res) + 3;
 725 }
 726
 727
 728 /***********************************************************************
 729  *           SearchPathW   (KERNEL32.@)
 730  */
 731 DWORD WINAPI SearchPathW( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 732                             DWORD buflen, LPWSTR buffer, LPWSTR *lastpart )
 733 {
 734     LPWSTR p;
 735     LPSTR res;
 736     DOS_FULL_NAME full_name;
 737
 738     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 739     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
 740     LPSTR extA  = HEAP_strdupWtoA( GetProcessHeap(), 0, ext );
 741     DWORD ret = DIR_SearchPath( pathA, nameA, extA, &full_name, TRUE );
 742     HeapFree( GetProcessHeap(), 0, extA );
 743     HeapFree( GetProcessHeap(), 0, nameA );
 744     HeapFree( GetProcessHeap(), 0, pathA );
 745     if (!ret) return 0;
 746
 747     if (buflen > 0 && !MultiByteToWideChar( CP_ACP, 0, full_name.short_name, -1, buffer, buflen ))
 748         buffer[buflen-1] = 0;
 749     res = full_name.long_name +
 750               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 751     while (*res == '/') res++;
 752     if (buflen)
 753     {
 754         if (buflen > 3)
 755         {
 756             if (!MultiByteToWideChar( CP_ACP, 0, res, -1, buffer+3, buflen-3 ))
 757                 buffer[buflen-1] = 0;
 758         }
 759         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 760         if (lastpart)
 761         {
 762             for (p = *lastpart = buffer; *p; p++)
 763                 if (*p == '\\') *lastpart = p + 1;
 764         }
 765     }
 766     return strlen(res) + 3;
 767 }
 768
 769
 770 /***********************************************************************
 771  *           search_alternate_path
 772  *
 773  *
 774  * FIXME: should return long path names.?
 775  */
 776 static BOOL search_alternate_path(LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 777                                   DOS_FULL_NAME *full_name)
 778 {
 779     LPCSTR p;
 780     LPSTR tmp = NULL;
 781     BOOL ret = TRUE;
 782
 783     /* First check the supplied parameters */
 784
 785     p = strrchr( name, '.' );
 786     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 787         ext = NULL;  /* Ignore the specified extension */
 788
 789     /* Allocate a buffer for the file name and extension */
 790
 791     if (ext)
 792     {
 793         DWORD len = strlen(name) + strlen(ext);
 794         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 795         {
 796             SetLastError( ERROR_OUTOFMEMORY );
 797             return 0;
 798         }
 799         strcpy( tmp, name );
 800         strcat( tmp, ext );
 801         name = tmp;
 802     }
 803
 804     if (DIR_TryEnvironmentPath (name, full_name, dll_path))
 805         ;
 806     else if (DOSFS_GetFullName (name, TRUE, full_name)) /* current dir */
 807         ;
 808     else if (DIR_TryPath (&DIR_System, name, full_name)) /* System dir */
 809         ;
 810     else if (DIR_TryPath (&DIR_Windows, name, full_name)) /* Windows dir */
 811         ;
 812     else
 813         ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 814
 815     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 816     return ret;
 817 }
 818
 819
 820 /***********************************************************************
 821  * DIR_SearchAlternatePath
 822  *
 823  * Searches for a specified file in the search path.
 824  *
 825  * PARAMS
 826  *    dll_path  [I] Path to search
 827  *    name      [I] Filename to search for.
 828  *    ext       [I] File extension to append to file name. The first
 829  *                  character must be a period. This parameter is
 830  *                  specified only if the filename given does not
 831  *                  contain an extension.
 832  *    buflen    [I] size of buffer, in characters
 833  *    buffer    [O] buffer for found filename
 834  *    lastpart  [O] address of pointer to last used character in
 835  *                  buffer (the final '\') (May be NULL)
 836  *
 837  * RETURNS
 838  *    Success: length of string copied into buffer, not including
 839  *             terminating null character. If the filename found is
 840  *             longer than the length of the buffer, the length of the
 841  *             filename is returned.
 842  *    Failure: Zero
 843  *
 844  * NOTES
 845  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 846  */
 847 DWORD DIR_SearchAlternatePath( LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 848                                DWORD buflen, LPSTR buffer, LPSTR *lastpart )
 849 {
 850     LPSTR p, res;
 851     DOS_FULL_NAME full_name;
 852
 853     if (!search_alternate_path( dll_path, name, ext, &full_name))
 854     {
 855         SetLastError(ERROR_FILE_NOT_FOUND);
 856         return 0;
 857     }
 858     lstrcpynA( buffer, full_name.short_name, buflen );
 859     res = full_name.long_name +
 860               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 861     while (*res == '/') res++;
 862     if (buflen)
 863     {
 864         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 865         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 866         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 867     }
 868     TRACE("Returning %d\n", strlen(res) + 3 );
 869     return strlen(res) + 3;
 870 }