files/directory.c

   1 /*
   2  * DOS directories functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <ctype.h>
  24 #include <stdlib.h>
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33 #include <errno.h>
  34 #ifdef HAVE_SYS_ERRNO_H
  35 #include <sys/errno.h>
  36 #endif
  37
  38 #include "ntstatus.h"
  39 #include "windef.h"
  40 #include "winbase.h"
  41 #include "wine/winbase16.h"
  42 #include "wingdi.h"
  43 #include "wine/winuser16.h"
  44 #include "winerror.h"
  45 #include "winreg.h"
  46 #include "winternl.h"
  47 #include "wine/unicode.h"
  48 #include "file.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(dosfs);
  52 WINE_DECLARE_DEBUG_CHANNEL(file);
  53
  54 static DOS_FULL_NAME DIR_Windows;
  55 static DOS_FULL_NAME DIR_System;
  56
  57 /***********************************************************************
  58  *           FILE_contains_pathW
  59  */
  60 inline static int FILE_contains_pathW (LPCWSTR name)
  61 {
  62     return ((*name && (name[1] == ':')) ||
  63             strchrW (name, '/') || strchrW (name, '\\'));
  64 }
  65
  66 /***********************************************************************
  67  *           DIR_GetPath
  68  *
  69  * Get a path name from the wine.ini file and make sure it is valid.
  70  */
  71 static int DIR_GetPath( HKEY hkey, LPCWSTR keyname, LPCWSTR defval, DOS_FULL_NAME *full_name,
  72                         LPWSTR longname, INT longname_len, BOOL warn )
  73 {
  74     UNICODE_STRING nameW;
  75     DWORD dummy;
  76     WCHAR tmp[MAX_PATHNAME_LEN];
  77     BY_HANDLE_FILE_INFORMATION info;
  78     const WCHAR *path = defval;
  79     const char *mess = "does not exist";
  80
  81     RtlInitUnicodeString( &nameW, keyname );
  82     if (hkey && !NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
  83         path = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
  84
  85     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  86         (!FILE_Stat( full_name->long_name, &info, NULL ) && (mess=strerror(errno)))||
  87         (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && (mess="not a directory")) ||
  88         (!(GetLongPathNameW(full_name->short_name, longname, longname_len))) )
  89     {
  90         if (warn)
  91         {
  92             MESSAGE("Invalid path %s for %s directory: %s.\n",
  93                     debugstr_w(path), debugstr_w(keyname), mess);
  94             MESSAGE("Perhaps you have not properly edited your Wine configuration file (%s/config)\n",
  95                     wine_get_config_dir());
  96         }
  97         return 0;
  98     }
  99     return 1;
 100 }
 101
 102
 103 /***********************************************************************
 104  *           DIR_Init
 105  */
 106 int DIR_Init(void)
 107 {
 108     OBJECT_ATTRIBUTES attr;
 109     UNICODE_STRING nameW;
 110     HKEY hkey;
 111     char path[MAX_PATHNAME_LEN];
 112     WCHAR longpath[MAX_PATHNAME_LEN];
 113     DOS_FULL_NAME tmp_dir, profile_dir;
 114     int drive;
 115     const char *cwd;
 116     static const WCHAR wineW[] = {'M','a','c','h','i','n','e','\\',
 117                                   'S','o','f','t','w','a','r','e','\\',
 118                                   'W','i','n','e','\\','W','i','n','e','\\',
 119                                   'C','o','n','f','i','g','\\','W','i','n','e',0};
 120     static const WCHAR windowsW[] = {'w','i','n','d','o','w','s',0};
 121     static const WCHAR systemW[] = {'s','y','s','t','e','m',0};
 122     static const WCHAR tempW[] = {'t','e','m','p',0};
 123     static const WCHAR profileW[] = {'p','r','o','f','i','l','e',0};
 124     static const WCHAR windows_dirW[] = {'c',':','\\','w','i','n','d','o','w','s',0};
 125     static const WCHAR system_dirW[] = {'c',':','\\','w','i','n','d','o','w','s','\\','s','y','s','t','e','m',0};
 126     static const WCHAR pathW[] = {'p','a','t','h',0};
 127     static const WCHAR path_dirW[] = {'c',':','\\','w','i','n','d','o','w','s',';',
 128                                       'c',':','\\','w','i','n','d','o','w','s','\\','s','y','s','t','e','m',0};
 129     static const WCHAR path_capsW[] = {'P','A','T','H',0};
 130     static const WCHAR temp_capsW[] = {'T','E','M','P',0};
 131     static const WCHAR tmp_capsW[] = {'T','M','P',0};
 132     static const WCHAR windirW[] = {'w','i','n','d','i','r',0};
 133     static const WCHAR winsysdirW[] = {'w','i','n','s','y','s','d','i','r',0};
 134     static const WCHAR userprofileW[] = {'U','S','E','R','P','R','O','F','I','L','E',0};
 135     static const WCHAR systemrootW[] = {'S','Y','S','T','E','M','R','O','O','T',0};
 136     static const WCHAR wcmdW[] = {'\\','w','c','m','d','.','e','x','e',0};
 137     static const WCHAR comspecW[] = {'C','O','M','S','P','E','C',0};
 138     static const WCHAR empty_strW[] = { 0 };
 139
 140     if (!getcwd( path, MAX_PATHNAME_LEN ))
 141     {
 142         perror( "Could not get current directory" );
 143         return 0;
 144     }
 145     cwd = path;
 146     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
 147     {
 148         MESSAGE("Warning: could not find wine config [Drive x] entry "
 149             "for current working directory %s; "
 150             "starting in windows directory.\n", cwd );
 151     }
 152     else
 153     {
 154         WCHAR szdrive[3]={drive+'A',':',0};
 155         MultiByteToWideChar(CP_UNIXCP, 0, cwd, -1, longpath, MAX_PATHNAME_LEN);
 156         DRIVE_SetCurrentDrive( drive );
 157         DRIVE_Chdir( drive, longpath );
 158         if(GetDriveTypeW(szdrive)==DRIVE_CDROM)
 159             chdir("/"); /* change to root directory so as not to lock cdroms */
 160     }
 161
 162     attr.Length = sizeof(attr);
 163     attr.RootDirectory = 0;
 164     attr.ObjectName = &nameW;
 165     attr.Attributes = 0;
 166     attr.SecurityDescriptor = NULL;
 167     attr.SecurityQualityOfService = NULL;
 168
 169     RtlInitUnicodeString( &nameW, wineW );
 170     if (NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL )) hkey = 0;
 171
 172     if (!(DIR_GetPath( hkey, windowsW, windows_dirW, &DIR_Windows, longpath, MAX_PATHNAME_LEN, TRUE )) ||
 173         !(DIR_GetPath( hkey, systemW, system_dirW, &DIR_System, longpath, MAX_PATHNAME_LEN, TRUE )) ||
 174         !(DIR_GetPath( hkey, tempW, windows_dirW, &tmp_dir, longpath, MAX_PATHNAME_LEN, TRUE )))
 175     {
 176         if (hkey) NtClose( hkey );
 177         return 0;
 178     }
 179     if (-1 == access( tmp_dir.long_name, W_OK ))
 180     {
 181         if (errno==EACCES)
 182         {
 183                 MESSAGE("Warning: the temporary directory '%s' specified in your\n"
 184                         "configuration file (%s) is not writeable.\n",
 185                         tmp_dir.long_name, wine_get_config_dir() );
 186         }
 187         else
 188                 MESSAGE("Warning: access to temporary directory '%s' failed (%s).\n",
 189                     tmp_dir.long_name, strerror(errno));
 190     }
 191
 192     if (drive == -1)
 193     {
 194         drive = DIR_Windows.drive;
 195         DRIVE_SetCurrentDrive( drive );
 196         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 197     }
 198
 199     /* Set the environment variables */
 200
 201     /* set COMSPEC only if it doesn't exist already */
 202     if (!GetEnvironmentVariableW( comspecW, NULL, 0 ))
 203     {
 204         strcpyW( longpath, DIR_System.short_name );
 205         strcatW( longpath, wcmdW );
 206         SetEnvironmentVariableW( comspecW, longpath );
 207     }
 208
 209     /* set PATH only if not set already */
 210     if (!GetEnvironmentVariableW( path_capsW, NULL, 0 ))
 211     {
 212         WCHAR tmp[MAX_PATHNAME_LEN];
 213         DWORD dummy;
 214         const WCHAR *path = path_dirW;
 215
 216         RtlInitUnicodeString( &nameW, pathW );
 217         if (hkey && !NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
 218                                       tmp, sizeof(tmp), &dummy ))
 219         {
 220             path = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
 221         }
 222
 223         if (strchrW(path, '/'))
 224         {
 225             MESSAGE("Fix your wine config (%s/config) to use DOS drive syntax in [wine] 'Path=' statement! (no '/' allowed)\n", wine_get_config_dir() );
 226             ExitProcess(1);
 227         }
 228         SetEnvironmentVariableW( path_capsW, path );
 229         TRACE("Path       = %s\n", debugstr_w(path) );
 230     }
 231
 232     SetEnvironmentVariableW( temp_capsW, tmp_dir.short_name );
 233     SetEnvironmentVariableW( tmp_capsW, tmp_dir.short_name );
 234     SetEnvironmentVariableW( windirW, DIR_Windows.short_name );
 235     SetEnvironmentVariableW( winsysdirW, DIR_System.short_name );
 236
 237     TRACE("WindowsDir = %s (%s)\n",
 238           debugstr_w(DIR_Windows.short_name), DIR_Windows.long_name );
 239     TRACE("SystemDir  = %s (%s)\n",
 240           debugstr_w(DIR_System.short_name), DIR_System.long_name );
 241     TRACE("TempDir    = %s (%s)\n",
 242           debugstr_w(tmp_dir.short_name), tmp_dir.long_name );
 243     TRACE("Cwd        = %c:\\%s\n",
 244           'A' + drive, debugstr_w(DRIVE_GetDosCwd(drive)) );
 245
 246     if (DIR_GetPath( hkey, profileW, empty_strW, &profile_dir, longpath, MAX_PATHNAME_LEN, FALSE ))
 247     {
 248         TRACE("USERPROFILE= %s\n", debugstr_w(longpath) );
 249         SetEnvironmentVariableW( userprofileW, longpath );
 250     }
 251
 252     TRACE("SYSTEMROOT = %s\n", debugstr_w(DIR_Windows.short_name) );
 253     SetEnvironmentVariableW( systemrootW, DIR_Windows.short_name );
 254     if (hkey) NtClose( hkey );
 255
 256     return 1;
 257 }
 258
 259
 260 /***********************************************************************
 261  *           GetTempPathA   (KERNEL32.@)
 262  */
 263 UINT WINAPI GetTempPathA( UINT count, LPSTR path )
 264 {
 265     WCHAR pathW[MAX_PATH];
 266     UINT ret;
 267
 268     ret = GetTempPathW(MAX_PATH, pathW);
 269
 270     if (!ret)
 271         return 0;
 272
 273     if (ret > MAX_PATH)
 274     {
 275         SetLastError(ERROR_FILENAME_EXCED_RANGE);
 276         return 0;
 277     }
 278
 279     ret = WideCharToMultiByte(CP_ACP, 0, pathW, -1, NULL, 0, NULL, NULL);
 280     if (ret <= count)
 281     {
 282         WideCharToMultiByte(CP_ACP, 0, pathW, -1, path, count, NULL, NULL);
 283         ret--; /* length without 0 */
 284     }
 285     return ret;
 286 }
 287
 288
 289 /***********************************************************************
 290  *           GetTempPathW   (KERNEL32.@)
 291  */
 292 UINT WINAPI GetTempPathW( UINT count, LPWSTR path )
 293 {
 294     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 295     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 296     WCHAR tmp_path[MAX_PATH];
 297     UINT ret;
 298
 299     TRACE("%u,%p\n", count, path);
 300
 301     if (!(ret = GetEnvironmentVariableW( tmp, tmp_path, MAX_PATH )))
 302         if (!(ret = GetEnvironmentVariableW( temp, tmp_path, MAX_PATH )))
 303             if (!(ret = GetCurrentDirectoryW( MAX_PATH, tmp_path )))
 304                 return 0;
 305
 306     if (ret > MAX_PATH)
 307     {
 308         SetLastError(ERROR_FILENAME_EXCED_RANGE);
 309         return 0;
 310     }
 311
 312     ret = GetFullPathNameW(tmp_path, MAX_PATH, tmp_path, NULL);
 313     if (!ret) return 0;
 314
 315     if (ret > MAX_PATH - 2)
 316     {
 317         SetLastError(ERROR_FILENAME_EXCED_RANGE);
 318         return 0;
 319     }
 320
 321     if (tmp_path[ret-1] != '\\')
 322     {
 323         tmp_path[ret++] = '\\';
 324         tmp_path[ret]   = '\0';
 325     }
 326
 327     ret++; /* add space for terminating 0 */
 328
 329     if (count)
 330     {
 331         lstrcpynW(path, tmp_path, count);
 332         if (count >= ret)
 333             ret--; /* return length without 0 */
 334         else if (count < 4)
 335             path[0] = 0; /* avoid returning ambiguous "X:" */
 336     }
 337
 338     TRACE("returning %u, %s\n", ret, debugstr_w(path));
 339     return ret;
 340 }
 341
 342
 343 /***********************************************************************
 344  *           GetTempDrive   (KERNEL.92)
 345  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 346  *
 347  * returns:
 348  *   AL: driveletter
 349  *   AH: ':'            - yes, some kernel code even does stosw with
 350  *                            the returned AX.
 351  *   DX: 1 for success
 352  */
 353 UINT WINAPI GetTempDrive( BYTE ignored )
 354 {
 355     char *buffer;
 356     BYTE ret;
 357     UINT len = GetTempPathA( 0, NULL );
 358
 359     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len + 1 )) )
 360         ret = DRIVE_GetCurrentDrive() + 'A';
 361     else
 362     {
 363         /* FIXME: apparently Windows does something with the ignored byte */
 364         if (!GetTempPathA( len, buffer )) buffer[0] = 'C';
 365         ret = toupper(buffer[0]);
 366         HeapFree( GetProcessHeap(), 0, buffer );
 367     }
 368     return MAKELONG( ret | (':' << 8), 1 );
 369 }
 370
 371
 372 /***********************************************************************
 373  *           GetWindowsDirectoryW   (KERNEL32.@)
 374  *
 375  * See comment for GetWindowsDirectoryA.
 376  */
 377 UINT WINAPI GetWindowsDirectoryW( LPWSTR path, UINT count )
 378 {
 379     UINT len = strlenW( DIR_Windows.short_name ) + 1;
 380     if (path && count >= len)
 381     {
 382         strcpyW( path, DIR_Windows.short_name );
 383         len--;
 384     }
 385     return len;
 386 }
 387
 388
 389 /***********************************************************************
 390  *           GetWindowsDirectoryA   (KERNEL32.@)
 391  *
 392  * Return value:
 393  * If buffer is large enough to hold full path and terminating '\0' character
 394  * function copies path to buffer and returns length of the path without '\0'.
 395  * Otherwise function returns required size including '\0' character and
 396  * does not touch the buffer.
 397  */
 398 UINT WINAPI GetWindowsDirectoryA( LPSTR path, UINT count )
 399 {
 400     UINT len = WideCharToMultiByte( CP_ACP, 0, DIR_Windows.short_name, -1, NULL, 0, NULL, NULL );
 401     if (path && count >= len)
 402     {
 403         WideCharToMultiByte( CP_ACP, 0, DIR_Windows.short_name, -1, path, count, NULL, NULL );
 404         len--;
 405     }
 406     return len;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           GetSystemWindowsDirectoryA   (KERNEL32.@) W2K, TS4.0SP4
 412  */
 413 UINT WINAPI GetSystemWindowsDirectoryA( LPSTR path, UINT count )
 414 {
 415     return GetWindowsDirectoryA( path, count );
 416 }
 417
 418
 419 /***********************************************************************
 420  *           GetSystemWindowsDirectoryW   (KERNEL32.@) W2K, TS4.0SP4
 421  */
 422 UINT WINAPI GetSystemWindowsDirectoryW( LPWSTR path, UINT count )
 423 {
 424     return GetWindowsDirectoryW( path, count );
 425 }
 426
 427
 428 /***********************************************************************
 429  *           GetSystemDirectoryW   (KERNEL32.@)
 430  *
 431  * See comment for GetWindowsDirectoryA.
 432  */
 433 UINT WINAPI GetSystemDirectoryW( LPWSTR path, UINT count )
 434 {
 435     UINT len = strlenW( DIR_System.short_name ) + 1;
 436     if (path && count >= len)
 437     {
 438         strcpyW( path, DIR_System.short_name );
 439         len--;
 440     }
 441     return len;
 442 }
 443
 444
 445 /***********************************************************************
 446  *           GetSystemDirectoryA   (KERNEL32.@)
 447  *
 448  * See comment for GetWindowsDirectoryA.
 449  */
 450 UINT WINAPI GetSystemDirectoryA( LPSTR path, UINT count )
 451 {
 452     UINT len = WideCharToMultiByte( CP_ACP, 0, DIR_System.short_name, -1, NULL, 0, NULL, NULL );
 453     if (path && count >= len)
 454     {
 455         WideCharToMultiByte( CP_ACP, 0, DIR_System.short_name, -1, path, count, NULL, NULL );
 456         len--;
 457     }
 458     return len;
 459 }
 460
 461
 462 /***********************************************************************
 463  *           CreateDirectoryW   (KERNEL32.@)
 464  * RETURNS:
 465  *      TRUE : success
 466  *      FALSE : failure
 467  *              ERROR_DISK_FULL:        on full disk
 468  *              ERROR_ALREADY_EXISTS:   if directory name exists (even as file)
 469  *              ERROR_ACCESS_DENIED:    on permission problems
 470  *              ERROR_FILENAME_EXCED_RANGE: too long filename(s)
 471  */
 472 BOOL WINAPI CreateDirectoryW( LPCWSTR path,
 473                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 474 {
 475     DOS_FULL_NAME full_name;
 476
 477     if (!path || !*path)
 478     {
 479         SetLastError(ERROR_PATH_NOT_FOUND);
 480         return FALSE;
 481     }
 482
 483     TRACE_(file)("(%s,%p)\n", debugstr_w(path), lpsecattribs );
 484
 485     if (RtlIsDosDeviceName_U( path ))
 486     {
 487         TRACE_(file)("cannot use device %s!\n", debugstr_w(path));
 488         SetLastError( ERROR_ACCESS_DENIED );
 489         return FALSE;
 490     }
 491     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 492     if (mkdir( full_name.long_name, 0777 ) == -1) {
 493         WARN_(file)("Error '%s' trying to create directory '%s'\n", strerror(errno), full_name.long_name);
 494         /* the FILE_SetDosError() generated error codes don't match the
 495          * CreateDirectory ones for some errnos */
 496         switch (errno) {
 497         case EEXIST:
 498         {
 499             if (!strcmp(DRIVE_GetRoot(full_name.drive), full_name.long_name))
 500                 SetLastError(ERROR_ACCESS_DENIED);
 501             else
 502                 SetLastError(ERROR_ALREADY_EXISTS);
 503             break;
 504         }
 505         case ENOSPC: SetLastError(ERROR_DISK_FULL); break;
 506         default: FILE_SetDosError();break;
 507         }
 508         return FALSE;
 509     }
 510     return TRUE;
 511 }
 512
 513
 514 /***********************************************************************
 515  *           CreateDirectoryA   (KERNEL32.@)
 516  */
 517 BOOL WINAPI CreateDirectoryA( LPCSTR path,
 518                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 519 {
 520     UNICODE_STRING pathW;
 521     BOOL ret = FALSE;
 522
 523     if (!path || !*path)
 524     {
 525         SetLastError(ERROR_PATH_NOT_FOUND);
 526         return FALSE;
 527     }
 528
 529     if (RtlCreateUnicodeStringFromAsciiz(&pathW, path))
 530     {
 531         ret = CreateDirectoryW(pathW.Buffer, lpsecattribs);
 532         RtlFreeUnicodeString(&pathW);
 533     }
 534     else
 535         SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 536     return ret;
 537 }
 538
 539
 540 /***********************************************************************
 541  *           CreateDirectoryExA   (KERNEL32.@)
 542  */
 543 BOOL WINAPI CreateDirectoryExA( LPCSTR template, LPCSTR path,
 544                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 545 {
 546     return CreateDirectoryA(path,lpsecattribs);
 547 }
 548
 549
 550 /***********************************************************************
 551  *           CreateDirectoryExW   (KERNEL32.@)
 552  */
 553 BOOL WINAPI CreateDirectoryExW( LPCWSTR template, LPCWSTR path,
 554                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 555 {
 556     return CreateDirectoryW(path,lpsecattribs);
 557 }
 558
 559
 560 /***********************************************************************
 561  *           RemoveDirectoryW   (KERNEL32.@)
 562  */
 563 BOOL WINAPI RemoveDirectoryW( LPCWSTR path )
 564 {
 565     DOS_FULL_NAME full_name;
 566
 567     if (!path)
 568     {
 569         SetLastError(ERROR_INVALID_PARAMETER);
 570         return FALSE;
 571     }
 572
 573     TRACE_(file)("%s\n", debugstr_w(path));
 574
 575     if (RtlIsDosDeviceName_U( path ))
 576     {
 577         TRACE_(file)("cannot remove device %s!\n", debugstr_w(path));
 578         SetLastError( ERROR_FILE_NOT_FOUND );
 579         return FALSE;
 580     }
 581     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 582     if (rmdir( full_name.long_name ) == -1)
 583     {
 584         FILE_SetDosError();
 585         return FALSE;
 586     }
 587     return TRUE;
 588 }
 589
 590
 591 /***********************************************************************
 592  *           RemoveDirectoryA   (KERNEL32.@)
 593  */
 594 BOOL WINAPI RemoveDirectoryA( LPCSTR path )
 595 {
 596     UNICODE_STRING pathW;
 597     BOOL ret = FALSE;
 598
 599     if (!path)
 600     {
 601         SetLastError(ERROR_INVALID_PARAMETER);
 602         return FALSE;
 603     }
 604
 605     if (RtlCreateUnicodeStringFromAsciiz(&pathW, path))
 606     {
 607         ret = RemoveDirectoryW(pathW.Buffer);
 608         RtlFreeUnicodeString(&pathW);
 609     }
 610     else
 611         SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 612     return ret;
 613 }
 614
 615
 616 /***********************************************************************
 617  *           DIR_TryPath
 618  *
 619  * Helper function for DIR_SearchPath.
 620  */
 621 static BOOL DIR_TryPath( const DOS_FULL_NAME *dir, LPCWSTR name,
 622                            DOS_FULL_NAME *full_name )
 623 {
 624     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 625     LPWSTR p_s = full_name->short_name + strlenW(dir->short_name) + 1;
 626
 627     if ((p_s >= full_name->short_name + sizeof(full_name->short_name)/sizeof(full_name->short_name[0]) - 14) ||
 628         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 629     {
 630         SetLastError( ERROR_PATH_NOT_FOUND );
 631         return FALSE;
 632     }
 633     if (!DOSFS_FindUnixName( dir, name, p_l,
 634                    sizeof(full_name->long_name) - (p_l - full_name->long_name), p_s ))
 635         return FALSE;
 636
 637     full_name->drive = dir->drive;
 638     strcpy( full_name->long_name, dir->long_name );
 639     p_l[-1] = '/';
 640     strcpyW( full_name->short_name, dir->short_name );
 641     p_s[-1] = '\\';
 642     return TRUE;
 643 }
 644
 645 static BOOL DIR_SearchSemicolonedPaths(LPCWSTR name, DOS_FULL_NAME *full_name, LPWSTR pathlist)
 646 {
 647     LPWSTR next, buffer = NULL;
 648     INT len = strlenW(name), newlen, currlen = 0;
 649     BOOL ret = FALSE;
 650
 651     next = pathlist;
 652     while (!ret && next)
 653     {
 654         static const WCHAR bkslashW[] = {'\\',0};
 655         LPWSTR cur = next;
 656         while (*cur == ';') cur++;
 657         if (!*cur) break;
 658         next = strchrW( cur, ';' );
 659         if (next) *next++ = '\0';
 660         newlen = strlenW(cur) + len + 2;
 661
 662         if (newlen > currlen)
 663         {
 664             if (buffer)
 665                 buffer = HeapReAlloc( GetProcessHeap(), 0, buffer, newlen * sizeof(WCHAR));
 666             else
 667                 buffer = HeapAlloc( GetProcessHeap(), 0, newlen * sizeof(WCHAR));
 668
 669             if(!buffer)
 670                 goto done;
 671             currlen = newlen;
 672         }
 673
 674         strcpyW( buffer, cur );
 675         strcatW( buffer, bkslashW );
 676         strcatW( buffer, name );
 677         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 678     }
 679 done:
 680     HeapFree( GetProcessHeap(), 0, buffer );
 681     return ret;
 682 }
 683
 684
 685 /***********************************************************************
 686  *           DIR_TryEnvironmentPath
 687  *
 688  * Helper function for DIR_SearchPath.
 689  * Search in the specified path, or in $PATH if NULL.
 690  */
 691 static BOOL DIR_TryEnvironmentPath( LPCWSTR name, DOS_FULL_NAME *full_name, LPCWSTR envpath )
 692 {
 693     LPWSTR path;
 694     BOOL ret = FALSE;
 695     DWORD size;
 696     static const WCHAR pathW[] = {'P','A','T','H',0};
 697
 698     size = envpath ? strlenW(envpath)+1 : GetEnvironmentVariableW( pathW, NULL, 0 );
 699     if (!size) return FALSE;
 700     if (!(path = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) return FALSE;
 701     if (envpath) strcpyW( path, envpath );
 702     else if (!GetEnvironmentVariableW( pathW, path, size )) goto done;
 703
 704     ret = DIR_SearchSemicolonedPaths(name, full_name, path);
 705
 706 done:
 707     HeapFree( GetProcessHeap(), 0, path );
 708     return ret;
 709 }
 710
 711
 712 /***********************************************************************
 713  *           DIR_TryModulePath
 714  *
 715  * Helper function for DIR_SearchPath.
 716  */
 717 static BOOL DIR_TryModulePath( LPCWSTR name, DOS_FULL_NAME *full_name, BOOL win32 )
 718 {
 719     WCHAR bufferW[MAX_PATH];
 720     LPWSTR p;
 721
 722     if (!win32)
 723     {
 724         char buffer[OFS_MAXPATHNAME];
 725         if (!GetCurrentTask()) return FALSE;
 726         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 727             return FALSE;
 728         MultiByteToWideChar(CP_ACP, 0, buffer, -1, bufferW, MAX_PATH);
 729     } else {
 730         if (!GetModuleFileNameW( 0, bufferW, MAX_PATH ) )
 731             return FALSE;
 732     }
 733     if (!(p = strrchrW( bufferW, '\\' ))) return FALSE;
 734     if (MAX_PATH - (++p - bufferW) <= strlenW(name)) return FALSE;
 735     strcpyW( p, name );
 736     return DOSFS_GetFullName( bufferW, TRUE, full_name );
 737 }
 738
 739
 740 /***********************************************************************
 741  *           DIR_SearchPath
 742  *
 743  * Implementation of SearchPathA. 'win32' specifies whether the search
 744  * order is Win16 (module path last) or Win32 (module path first).
 745  *
 746  * FIXME: should return long path names.
 747  */
 748 DWORD DIR_SearchPath( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 749                       DOS_FULL_NAME *full_name, BOOL win32 )
 750 {
 751     LPCWSTR p;
 752     LPWSTR tmp = NULL;
 753     BOOL ret = TRUE;
 754
 755     /* First check the supplied parameters */
 756
 757     p = strrchrW( name, '.' );
 758     if (p && !strchrW( p, '/' ) && !strchrW( p, '\\' ))
 759         ext = NULL;  /* Ignore the specified extension */
 760     if (FILE_contains_pathW (name))
 761         path = NULL;  /* Ignore path if name already contains a path */
 762     if (path && !*path) path = NULL;  /* Ignore empty path */
 763
 764     /* Allocate a buffer for the file name and extension */
 765
 766     if (ext)
 767     {
 768         DWORD len = strlenW(name) + strlenW(ext);
 769         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) )))
 770         {
 771             SetLastError( ERROR_OUTOFMEMORY );
 772             return 0;
 773         }
 774         strcpyW( tmp, name );
 775         strcatW( tmp, ext );
 776         name = tmp;
 777     }
 778
 779     /* If the name contains an explicit path, everything's easy */
 780
 781     if (FILE_contains_pathW(name))
 782     {
 783         ret = DOSFS_GetFullName( name, TRUE, full_name );
 784         goto done;
 785     }
 786
 787     /* Search in the specified path */
 788
 789     if (path)
 790     {
 791         ret = DIR_TryEnvironmentPath( name, full_name, path );
 792         goto done;
 793     }
 794
 795     /* Try the path of the current executable (for Win32 search order) */
 796
 797     if (win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 798
 799     /* Try the current directory */
 800
 801     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 802
 803     /* Try the Windows system directory */
 804
 805     if (DIR_TryPath( &DIR_System, name, full_name ))
 806         goto done;
 807
 808     /* Try the Windows directory */
 809
 810     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 811         goto done;
 812
 813     /* Try the path of the current executable (for Win16 search order) */
 814
 815     if (!win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 816
 817     /* Try all directories in path */
 818
 819     ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 820
 821 done:
 822     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 823     return ret;
 824 }
 825
 826
 827 /***********************************************************************
 828  * SearchPathW [KERNEL32.@]
 829  *
 830  * Searches for a specified file in the search path.
 831  *
 832  * PARAMS
 833  *    path      [I] Path to search
 834  *    name      [I] Filename to search for.
 835  *    ext       [I] File extension to append to file name. The first
 836  *                  character must be a period. This parameter is
 837  *                  specified only if the filename given does not
 838  *                  contain an extension.
 839  *    buflen    [I] size of buffer, in characters
 840  *    buffer    [O] buffer for found filename
 841  *    lastpart  [O] address of pointer to last used character in
 842  *                  buffer (the final '\')
 843  *
 844  * RETURNS
 845  *    Success: length of string copied into buffer, not including
 846  *             terminating null character. If the filename found is
 847  *             longer than the length of the buffer, the length of the
 848  *             filename is returned.
 849  *    Failure: Zero
 850  *
 851  * NOTES
 852  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 853  *    (tested on NT 4.0)
 854  */
 855 DWORD WINAPI SearchPathW( LPCWSTR path, LPCWSTR name, LPCWSTR ext, DWORD buflen,
 856                           LPWSTR buffer, LPWSTR *lastpart )
 857 {
 858     LPSTR res;
 859     DOS_FULL_NAME full_name;
 860
 861     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE ))
 862     {
 863         SetLastError(ERROR_FILE_NOT_FOUND);
 864         return 0;
 865     }
 866
 867 TRACE("found %s %s\n", full_name.long_name, debugstr_w(full_name.short_name));
 868 TRACE("drive %c: root %s\n", 'A' + full_name.drive, DRIVE_GetRoot(full_name.drive));
 869
 870     lstrcpynW( buffer, full_name.short_name, buflen );
 871     res = full_name.long_name +
 872               strlen(DRIVE_GetRoot( full_name.drive ));
 873     while (*res == '/') res++;
 874     if (buflen)
 875     {
 876         LPWSTR p;
 877         if (buflen > 3)
 878         {
 879             MultiByteToWideChar(CP_UNIXCP, 0, res, -1, buffer + 3, buflen - 3);
 880             buffer[buflen - 1] = 0;
 881         }
 882         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 883         if (lastpart) *lastpart = strrchrW( buffer, '\\' ) + 1;
 884     }
 885     TRACE("Returning %s\n", debugstr_w(buffer) );
 886     return strlenW(buffer);
 887 }
 888
 889
 890 /***********************************************************************
 891  *           SearchPathA   (KERNEL32.@)
 892  */
 893 DWORD WINAPI SearchPathA( LPCSTR path, LPCSTR name, LPCSTR ext,
 894                           DWORD buflen, LPSTR buffer, LPSTR *lastpart )
 895 {
 896     UNICODE_STRING pathW, nameW, extW;
 897     WCHAR bufferW[MAX_PATH];
 898     DWORD ret, retW;
 899
 900     if (path) RtlCreateUnicodeStringFromAsciiz(&pathW, path);
 901     else pathW.Buffer = NULL;
 902     if (name) RtlCreateUnicodeStringFromAsciiz(&nameW, name);
 903     else nameW.Buffer = NULL;
 904     if (ext) RtlCreateUnicodeStringFromAsciiz(&extW, ext);
 905     else extW.Buffer = NULL;
 906
 907     retW = SearchPathW(pathW.Buffer, nameW.Buffer, extW.Buffer, MAX_PATH, bufferW, NULL);
 908
 909     if (!retW)
 910         ret = 0;
 911     else if (retW > MAX_PATH)
 912     {
 913         SetLastError(ERROR_FILENAME_EXCED_RANGE);
 914         ret = 0;
 915     }
 916     else
 917     {
 918         ret = WideCharToMultiByte(CP_ACP, 0, bufferW, -1, NULL, 0, NULL, NULL);
 919         if (buflen >= ret)
 920         {
 921             WideCharToMultiByte(CP_ACP, 0, bufferW, -1, buffer, buflen, NULL, NULL);
 922             ret--; /* length without 0 */
 923             if (lastpart) *lastpart = strrchr(buffer, '\\') + 1;
 924         }
 925     }
 926
 927     RtlFreeUnicodeString(&pathW);
 928     RtlFreeUnicodeString(&nameW);
 929     RtlFreeUnicodeString(&extW);
 930     return ret;
 931 }