dlls/krnl386.exe16/file.c

   1 /*
   2  * File handling functions
   3  *
   4  * Copyright 1993 John Burton
   5  * Copyright 1996 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  * TODO:
  22  *    Fix the CopyFileEx methods to implement the "extended" functionality.
  23  *    Right now, they simply call the CopyFile method.
  24  */
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #include <assert.h>
  32
  33 #include "winerror.h"
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "winternl.h"
  37 #include "wine/winbase16.h"
  38 #include "kernel16_private.h"
  39 #include "wine/unicode.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(file);
  43
  44 #define DOS_TABLE_SIZE 256
  45
  46 static HANDLE dos_handles[DOS_TABLE_SIZE];
  47
  48 /***********************************************************************
  49  *           FILE_InitProcessDosHandles
  50  *
  51  * Allocates the default DOS handles for a process. Called either by
  52  * Win32HandleToDosFileHandle below or by the DOSVM stuff.
  53  */
  54 static void FILE_InitProcessDosHandles( void )
  55 {
  56     HANDLE hStdInput, hStdOutput, hStdError, hNull;
  57     static BOOL init_done /* = FALSE */;
  58     HANDLE cp = GetCurrentProcess();
  59
  60     if (init_done) return;
  61     init_done = TRUE;
  62     hStdInput = GetStdHandle(STD_INPUT_HANDLE);
  63     hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
  64     hStdError = GetStdHandle(STD_ERROR_HANDLE);
  65     hNull = CreateFileA("NUL", GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
  66     /* Invalid console handles need to translate to real DOS handles in a new process */
  67     if (!hStdInput) hStdInput = hNull;
  68     if (!hStdOutput) hStdOutput = hNull;
  69     if (!hStdError) hStdError = hNull;
  70     DuplicateHandle(cp, hStdInput, cp, &dos_handles[0], 0, TRUE, DUPLICATE_SAME_ACCESS);
  71     DuplicateHandle(cp, hStdOutput, cp, &dos_handles[1], 0, TRUE, DUPLICATE_SAME_ACCESS);
  72     DuplicateHandle(cp, hStdError, cp, &dos_handles[2], 0, TRUE, DUPLICATE_SAME_ACCESS);
  73     DuplicateHandle(cp, hStdError, cp, &dos_handles[3], 0, TRUE, DUPLICATE_SAME_ACCESS);
  74     DuplicateHandle(cp, hStdError, cp, &dos_handles[4], 0, TRUE, DUPLICATE_SAME_ACCESS);
  75     CloseHandle(hNull);
  76 }
  77
  78 /***********************************************************************
  79  *           DosFileHandleToWin32Handle   (KERNEL32.20)
  80  *
  81  * Return the Win32 handle for a DOS handle.
  82  *
  83  * Note: this is not exactly right, since on Win95 the Win32 handles
  84  *       are on top of DOS handles and we do it the other way
  85  *       around. Should be good enough though.
  86  */
  87 HANDLE WINAPI DosFileHandleToWin32Handle( HFILE handle )
  88 {
  89     HFILE16 hfile = (HFILE16)handle;
  90     if (hfile < 5) FILE_InitProcessDosHandles();
  91     if ((hfile >= DOS_TABLE_SIZE) || !dos_handles[hfile])
  92     {
  93         SetLastError( ERROR_INVALID_HANDLE );
  94         return INVALID_HANDLE_VALUE;
  95     }
  96     return dos_handles[hfile];
  97 }
  98
  99 /***********************************************************************
 100  *           Win32HandleToDosFileHandle   (KERNEL32.21)
 101  *
 102  * Allocate a DOS handle for a Win32 handle. The Win32 handle is no
 103  * longer valid after this function (even on failure).
 104  *
 105  * Note: this is not exactly right, since on Win95 the Win32 handles
 106  *       are on top of DOS handles and we do it the other way
 107  *       around. Should be good enough though.
 108  */
 109 HFILE WINAPI Win32HandleToDosFileHandle( HANDLE handle )
 110 {
 111     int i;
 112
 113     if (!handle || (handle == INVALID_HANDLE_VALUE))
 114         return HFILE_ERROR;
 115
 116     FILE_InitProcessDosHandles();
 117     for (i = 0; i < DOS_TABLE_SIZE; i++)
 118         if (!dos_handles[i])
 119         {
 120             dos_handles[i] = handle;
 121             TRACE("Got %d for h32 %p\n", i, handle );
 122             return (HFILE)i;
 123         }
 124     CloseHandle( handle );
 125     SetLastError( ERROR_TOO_MANY_OPEN_FILES );
 126     return HFILE_ERROR;
 127 }
 128
 129 /***********************************************************************
 130  *           DisposeLZ32Handle   (KERNEL32.22)
 131  *
 132  * Note: this is not entirely correct, we should only close the
 133  *       32-bit handle and not the 16-bit one, but we cannot do
 134  *       this because of the way our DOS handles are implemented.
 135  *       It shouldn't break anything though.
 136  */
 137 void WINAPI DisposeLZ32Handle( HANDLE handle )
 138 {
 139     int i;
 140
 141     if (!handle || (handle == INVALID_HANDLE_VALUE)) return;
 142
 143     for (i = 5; i < DOS_TABLE_SIZE; i++)
 144         if (dos_handles[i] == handle)
 145         {
 146             dos_handles[i] = 0;
 147             CloseHandle( handle );
 148             break;
 149         }
 150 }
 151
 152 /***********************************************************************
 153  *           GetProfileInt   (KERNEL.57)
 154  */
 155 UINT16 WINAPI GetProfileInt16( LPCSTR section, LPCSTR entry, INT16 def_val )
 156 {
 157     return GetPrivateProfileInt16( section, entry, def_val, "win.ini" );
 158 }
 159
 160
 161 /***********************************************************************
 162  *           GetProfileString   (KERNEL.58)
 163  */
 164 INT16 WINAPI GetProfileString16( LPCSTR section, LPCSTR entry, LPCSTR def_val,
 165                                  LPSTR buffer, UINT16 len )
 166 {
 167     return GetPrivateProfileString16( section, entry, def_val,
 168                                       buffer, len, "win.ini" );
 169 }
 170
 171
 172 /***********************************************************************
 173  *           WriteProfileString   (KERNEL.59)
 174  */
 175 BOOL16 WINAPI WriteProfileString16( LPCSTR section, LPCSTR entry,
 176                                     LPCSTR string )
 177 {
 178     return WritePrivateProfileString16( section, entry, string, "win.ini" );
 179 }
 180
 181
 182 /* get the search path for the current module; helper for OpenFile16 */
 183 static char *get_search_path(void)
 184 {
 185     UINT len;
 186     char *ret, *p, module[OFS_MAXPATHNAME];
 187
 188     module[0] = 0;
 189     if (GetCurrentTask() && GetModuleFileName16( GetCurrentTask(), module, sizeof(module) ))
 190     {
 191         if (!(p = strrchr( module, '\\' ))) p = module;
 192         *p = 0;
 193     }
 194
 195     len = (2 +                                              /* search order: first current dir */
 196            GetSystemDirectory16( NULL, 0 ) + 1 +            /* then system dir */
 197            GetWindowsDirectoryA( NULL, 0 ) + 1 +            /* then windows dir */
 198            strlen( module ) + 1 +                           /* then module path */
 199            GetEnvironmentVariableA( "PATH", NULL, 0 ) + 1); /* then look in PATH */
 200     if (!(ret = HeapAlloc( GetProcessHeap(), 0, len ))) return NULL;
 201     strcpy( ret, ".;" );
 202     p = ret + 2;
 203     GetSystemDirectory16( p, ret + len - p );
 204     p += strlen( p );
 205     *p++ = ';';
 206     GetWindowsDirectoryA( p, ret + len - p );
 207     p += strlen( p );
 208     *p++ = ';';
 209     if (module[0])
 210     {
 211         strcpy( p, module );
 212         p += strlen( p );
 213         *p++ = ';';
 214     }
 215     GetEnvironmentVariableA( "PATH", p, ret + len - p );
 216     return ret;
 217 }
 218
 219 /***********************************************************************
 220  *           OpenFile   (KERNEL.74)
 221  *           OpenFileEx (KERNEL.360)
 222  */
 223 HFILE16 WINAPI OpenFile16( LPCSTR name, OFSTRUCT *ofs, UINT16 mode )
 224 {
 225     HFILE hFileRet;
 226     HANDLE handle;
 227     FILETIME filetime;
 228     WORD filedatetime[2];
 229     const char *p, *filename;
 230
 231     if (!ofs) return HFILE_ERROR;
 232
 233     TRACE("%s %s %s %s%s%s%s%s%s%s%s%s\n",debugstr_a(name),
 234           ((mode & 0x3 )==OF_READ)?"OF_READ":
 235           ((mode & 0x3 )==OF_WRITE)?"OF_WRITE":
 236           ((mode & 0x3 )==OF_READWRITE)?"OF_READWRITE":"unknown",
 237           ((mode & 0x70 )==OF_SHARE_COMPAT)?"OF_SHARE_COMPAT":
 238           ((mode & 0x70 )==OF_SHARE_DENY_NONE)?"OF_SHARE_DENY_NONE":
 239           ((mode & 0x70 )==OF_SHARE_DENY_READ)?"OF_SHARE_DENY_READ":
 240           ((mode & 0x70 )==OF_SHARE_DENY_WRITE)?"OF_SHARE_DENY_WRITE":
 241           ((mode & 0x70 )==OF_SHARE_EXCLUSIVE)?"OF_SHARE_EXCLUSIVE":"unknown",
 242           ((mode & OF_PARSE )==OF_PARSE)?"OF_PARSE ":"",
 243           ((mode & OF_DELETE )==OF_DELETE)?"OF_DELETE ":"",
 244           ((mode & OF_VERIFY )==OF_VERIFY)?"OF_VERIFY ":"",
 245           ((mode & OF_SEARCH )==OF_SEARCH)?"OF_SEARCH ":"",
 246           ((mode & OF_CANCEL )==OF_CANCEL)?"OF_CANCEL ":"",
 247           ((mode & OF_CREATE )==OF_CREATE)?"OF_CREATE ":"",
 248           ((mode & OF_PROMPT )==OF_PROMPT)?"OF_PROMPT ":"",
 249           ((mode & OF_EXIST )==OF_EXIST)?"OF_EXIST ":"",
 250           ((mode & OF_REOPEN )==OF_REOPEN)?"OF_REOPEN ":""
 251         );
 252
 253     if (mode & OF_PARSE)
 254     {
 255         OpenFile( name, ofs, mode );
 256         return 0;
 257     }
 258
 259     if (mode & OF_CREATE)
 260     {
 261         handle = (HANDLE)OpenFile( name, ofs, mode );
 262         if (handle == (HANDLE)HFILE_ERROR) goto error;
 263     }
 264     else
 265     {
 266         ofs->cBytes = sizeof(OFSTRUCT);
 267         ofs->nErrCode = 0;
 268         if (mode & OF_REOPEN) name = ofs->szPathName;
 269
 270         if (!name) return HFILE_ERROR;
 271
 272         /* the watcom 10.6 IDE relies on a valid path returned in ofs->szPathName
 273            Are there any cases where getting the path here is wrong?
 274            Uwe Bonnes 1997 Apr 2 */
 275         if (!GetFullPathNameA( name, sizeof(ofs->szPathName), ofs->szPathName, NULL )) goto error;
 276
 277         /* If OF_SEARCH is set, ignore the given path */
 278
 279         filename = name;
 280         if ((mode & OF_SEARCH) && !(mode & OF_REOPEN))
 281         {
 282             /* First try the file name as is */
 283             if (GetFileAttributesA( filename ) != INVALID_FILE_ATTRIBUTES) filename = NULL;
 284             else
 285             {
 286                 /* Now remove the path */
 287                 if (filename[0] && (filename[1] == ':')) filename += 2;
 288                 if ((p = strrchr( filename, '\\' ))) filename = p + 1;
 289                 if ((p = strrchr( filename, '/' ))) filename = p + 1;
 290                 if (!filename[0])
 291                 {
 292                     SetLastError( ERROR_FILE_NOT_FOUND );
 293                     goto error;
 294                 }
 295             }
 296         }
 297
 298         /* Now look for the file */
 299
 300         if (filename)
 301         {
 302             BOOL found;
 303             char *path = get_search_path();
 304
 305             if (!path) goto error;
 306             found = SearchPathA( path, filename, NULL, sizeof(ofs->szPathName),
 307                                  ofs->szPathName, NULL );
 308             HeapFree( GetProcessHeap(), 0, path );
 309             if (!found) goto error;
 310         }
 311
 312         TRACE("found %s\n", debugstr_a(ofs->szPathName) );
 313
 314         if (mode & OF_DELETE)
 315         {
 316             if (!DeleteFileA( ofs->szPathName )) goto error;
 317             TRACE("(%s): OF_DELETE return = OK\n", name);
 318             return 1;
 319         }
 320
 321         handle = (HANDLE)_lopen( ofs->szPathName, mode );
 322         if (handle == INVALID_HANDLE_VALUE) goto error;
 323
 324         GetFileTime( handle, NULL, NULL, &filetime );
 325         FileTimeToDosDateTime( &filetime, &filedatetime[0], &filedatetime[1] );
 326         if ((mode & OF_VERIFY) && (mode & OF_REOPEN))
 327         {
 328             if (ofs->Reserved1 != filedatetime[0] || ofs->Reserved2 != filedatetime[1] )
 329             {
 330                 CloseHandle( handle );
 331                 WARN("(%s): OF_VERIFY failed\n", name );
 332                 /* FIXME: what error here? */
 333                 SetLastError( ERROR_FILE_NOT_FOUND );
 334                 goto error;
 335             }
 336         }
 337         ofs->Reserved1 = filedatetime[0];
 338         ofs->Reserved2 = filedatetime[1];
 339     }
 340
 341     TRACE("(%s): OK, return = %p\n", name, handle );
 342     hFileRet = Win32HandleToDosFileHandle( handle );
 343     if (hFileRet == HFILE_ERROR16) goto error;
 344     if (mode & OF_EXIST) _lclose16( hFileRet ); /* Return the handle, but close it first */
 345     return hFileRet;
 346
 347 error:  /* We get here if there was an error opening the file */
 348     ofs->nErrCode = GetLastError();
 349     WARN("(%s): return = HFILE_ERROR error= %d\n", name,ofs->nErrCode );
 350     return HFILE_ERROR16;
 351 }
 352
 353
 354 /***********************************************************************
 355  *           _lclose   (KERNEL.81)
 356  */
 357 HFILE16 WINAPI _lclose16( HFILE16 hFile )
 358 {
 359     if ((hFile >= DOS_TABLE_SIZE) || !dos_handles[hFile])
 360     {
 361         SetLastError( ERROR_INVALID_HANDLE );
 362         return HFILE_ERROR16;
 363     }
 364     TRACE("%d (handle32=%p)\n", hFile, dos_handles[hFile] );
 365     CloseHandle( dos_handles[hFile] );
 366     dos_handles[hFile] = 0;
 367     return 0;
 368 }
 369
 370 /***********************************************************************
 371  *           _lcreat   (KERNEL.83)
 372  */
 373 HFILE16 WINAPI _lcreat16( LPCSTR path, INT16 attr )
 374 {
 375     return Win32HandleToDosFileHandle( (HANDLE)_lcreat( path, attr ) );
 376 }
 377
 378 /***********************************************************************
 379  *           _llseek   (KERNEL.84)
 380  *
 381  * FIXME:
 382  *   Seeking before the start of the file should be allowed for _llseek16,
 383  *   but cause subsequent I/O operations to fail (cf. interrupt list)
 384  *
 385  */
 386 LONG WINAPI _llseek16( HFILE16 hFile, LONG lOffset, INT16 nOrigin )
 387 {
 388     return SetFilePointer( DosFileHandleToWin32Handle(hFile), lOffset, NULL, nOrigin );
 389 }
 390
 391
 392 /***********************************************************************
 393  *           _lopen   (KERNEL.85)
 394  */
 395 HFILE16 WINAPI _lopen16( LPCSTR path, INT16 mode )
 396 {
 397     return Win32HandleToDosFileHandle( (HANDLE)_lopen( path, mode ) );
 398 }
 399
 400
 401 /***********************************************************************
 402  *           _lread16 (internal)
 403  */
 404 UINT16 WINAPI _lread16( HFILE16 hFile, LPVOID buffer, UINT16 count )
 405 {
 406     return (UINT16)_lread((HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 407 }
 408
 409
 410 /***********************************************************************
 411  *           _lwrite   (KERNEL.86)
 412  */
 413 UINT16 WINAPI _lwrite16( HFILE16 hFile, LPCSTR buffer, UINT16 count )
 414 {
 415     return (UINT16)_hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 416 }
 417
 418 /***********************************************************************
 419  *           _hread (KERNEL.349)
 420  */
 421 LONG WINAPI WIN16_hread( HFILE16 hFile, SEGPTR buffer, LONG count )
 422 {
 423     LONG maxlen;
 424
 425     TRACE("%d %08x %d\n", hFile, (DWORD)buffer, count );
 426
 427     /* Some programs pass a count larger than the allocated buffer */
 428     maxlen = GetSelectorLimit16( SELECTOROF(buffer) ) - OFFSETOF(buffer) + 1;
 429     if (count > maxlen) count = maxlen;
 430     return _lread((HFILE)DosFileHandleToWin32Handle(hFile), MapSL(buffer), count );
 431 }
 432
 433
 434 /***********************************************************************
 435  *           _lread (KERNEL.82)
 436  */
 437 UINT16 WINAPI WIN16_lread( HFILE16 hFile, SEGPTR buffer, UINT16 count )
 438 {
 439     return (UINT16)WIN16_hread( hFile, buffer, (LONG)count );
 440 }
 441
 442
 443 /***********************************************************************
 444  *           _hwrite   (KERNEL.350)
 445  */
 446 LONG WINAPI _hwrite16( HFILE16 hFile, LPCSTR buffer, LONG count )
 447 {
 448     return _hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, count );
 449 }
 450
 451
 452 /***********************************************************************
 453  *           GetTempDrive   (KERNEL.92)
 454  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 455  *
 456  * returns:
 457  *   AL: driveletter
 458  *   AH: ':'            - yes, some kernel code even does stosw with
 459  *                            the returned AX.
 460  *   DX: 1 for success
 461  */
 462 UINT WINAPI GetTempDrive( BYTE ignored )
 463 {
 464     WCHAR buffer[MAX_PATH];
 465     BYTE ret;
 466
 467     if (GetTempPathW( MAX_PATH, buffer )) ret = (BYTE)toupperW(buffer[0]);
 468     else ret = 'C';
 469     return MAKELONG( ret | (':' << 8), 1 );
 470 }
 471
 472
 473 /***********************************************************************
 474  *           GetTempFileName   (KERNEL.97)
 475  */
 476 UINT16 WINAPI GetTempFileName16( BYTE drive, LPCSTR prefix, UINT16 unique,
 477                                  LPSTR buffer )
 478 {
 479     char temppath[MAX_PATH];
 480     char *prefix16 = NULL;
 481     UINT16 ret;
 482
 483     if (!(drive & ~TF_FORCEDRIVE)) /* drive 0 means current default drive */
 484     {
 485         GetCurrentDirectoryA(sizeof(temppath), temppath);
 486         drive |= temppath[0];
 487     }
 488
 489     if (drive & TF_FORCEDRIVE)
 490     {
 491         char    d[3];
 492
 493         d[0] = drive & ~TF_FORCEDRIVE;
 494         d[1] = ':';
 495         d[2] = '\0';
 496         if (GetDriveTypeA(d) == DRIVE_NO_ROOT_DIR)
 497         {
 498             drive &= ~TF_FORCEDRIVE;
 499             WARN("invalid drive %d specified\n", drive );
 500         }
 501     }
 502
 503     if (drive & TF_FORCEDRIVE)
 504         sprintf(temppath,"%c:", drive & ~TF_FORCEDRIVE );
 505     else
 506         GetTempPathA( MAX_PATH, temppath );
 507
 508     if (prefix)
 509     {
 510         prefix16 = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + 2);
 511         *prefix16 = '~';
 512         strcpy(prefix16 + 1, prefix);
 513     }
 514
 515     ret = GetTempFileNameA( temppath, prefix16, unique, buffer );
 516
 517     HeapFree(GetProcessHeap(), 0, prefix16);
 518     return ret;
 519 }
 520
 521
 522 /***********************************************************************
 523  *           GetPrivateProfileInt   (KERNEL.127)
 524  */
 525 UINT16 WINAPI GetPrivateProfileInt16( LPCSTR section, LPCSTR entry,
 526                                       INT16 def_val, LPCSTR filename )
 527 {
 528     /* we used to have some elaborate return value limitation (<= -32768 etc.)
 529      * here, but Win98SE doesn't care about this at all, so I deleted it.
 530      * AFAIR versions prior to Win9x had these limits, though. */
 531     return (INT16)GetPrivateProfileIntA(section,entry,def_val,filename);
 532 }
 533
 534
 535 /***********************************************************************
 536  *           GetPrivateProfileString   (KERNEL.128)
 537  */
 538 INT16 WINAPI GetPrivateProfileString16( LPCSTR section, LPCSTR entry,
 539                                         LPCSTR def_val, LPSTR buffer,
 540                                         UINT16 len, LPCSTR filename )
 541 {
 542     TRACE("(%s, %s, %s, %p, %u, %s)\n", debugstr_a(section), debugstr_a(entry),
 543           debugstr_a(def_val), buffer, len, debugstr_a(filename));
 544
 545     if (!section)
 546     {
 547         if (buffer && len) buffer[0] = 0;
 548         return 0;
 549     }
 550     if (!entry)
 551     {
 552         /* We have to return the list of keys in the section but without the values
 553          * so we need to massage the results of GetPrivateProfileSectionA.
 554          */
 555         UINT ret, oldlen = len, size = min( len, 1024 );
 556         LPSTR data, src;
 557
 558         for (;;)
 559         {
 560             if (!(data = HeapAlloc(GetProcessHeap(), 0, size ))) return 0;
 561             ret = GetPrivateProfileSectionA( section, data, size, filename );
 562             if (!ret)
 563             {
 564                 HeapFree( GetProcessHeap(), 0, data );
 565                 return GetPrivateProfileStringA( section, entry, def_val, buffer, len, filename );
 566             }
 567             if (ret != size - 2) break;
 568             /* overflow, try again */
 569             size *= 2;
 570             HeapFree( GetProcessHeap(), 0, data );
 571         }
 572
 573         src = data;
 574         while (len && *src)
 575         {
 576             char *p = strchr( src, '=' );
 577
 578             /* A valid entry is formed by name = value */
 579             if (!p)
 580             {
 581                 src += strlen(src) + 1;
 582                 continue;
 583             }
 584             if (p - src < len)
 585             {
 586                 memcpy( buffer, src, p - src );
 587                 buffer += p - src;
 588                 *buffer++ = 0;
 589                 len -= (p - src) + 1;
 590                 src += strlen(src) + 1;
 591             }
 592             else  /* overflow */
 593             {
 594                 memcpy( buffer, src, len );
 595                 buffer += len;
 596                 len = 0;
 597             }
 598         }
 599         HeapFree( GetProcessHeap(), 0, data );
 600
 601         if (len)
 602         {
 603             *buffer = 0;
 604             return oldlen - len;
 605         }
 606         if (oldlen > 2)
 607         {
 608             buffer[-2] = 0;
 609             buffer[-1] = 0;
 610             return oldlen - 2;
 611         }
 612         return 0;
 613     }
 614     return GetPrivateProfileStringA( section, entry, def_val, buffer, len, filename );
 615 }
 616
 617
 618 /***********************************************************************
 619  *           WritePrivateProfileString   (KERNEL.129)
 620  */
 621 BOOL16 WINAPI WritePrivateProfileString16( LPCSTR section, LPCSTR entry,
 622                                            LPCSTR string, LPCSTR filename )
 623 {
 624     return WritePrivateProfileStringA(section,entry,string,filename);
 625 }
 626
 627
 628 /***********************************************************************
 629  *           GetWindowsDirectory   (KERNEL.134)
 630  */
 631 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 632 {
 633     return GetWindowsDirectoryA( path, count );
 634 }
 635
 636
 637 /***********************************************************************
 638  *           GetSystemDirectory   (KERNEL.135)
 639  */
 640 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 641 {
 642     static const char system16[] = "\\SYSTEM";
 643     char windir[MAX_PATH];
 644     UINT16 len;
 645
 646     len = GetWindowsDirectory16(windir, sizeof(windir) - sizeof(system16) + 1) + sizeof(system16);
 647     if (count >= len)
 648     {
 649         lstrcpyA(path, windir);
 650         lstrcatA(path, system16);
 651         len--;  /* space for the terminating zero is not included on success */
 652     }
 653     return len;
 654 }
 655
 656
 657 /***********************************************************************
 658  *           GetDriveType   (KERNEL.136)
 659  * Get the type of a drive in Win16.
 660  *
 661  * RETURNS
 662  *  The type of the Drive. For a list see GetDriveTypeW from kernel32.
 663  *
 664  * NOTES
 665  *  Note that it returns DRIVE_REMOTE for CD-ROMs, since MSCDEX uses the
 666  *  remote drive API. The return value DRIVE_REMOTE for CD-ROMs has been
 667  *  verified on Win 3.11 and Windows 95. Some programs rely on it, so don't
 668  *  do any pseudo-clever changes.
 669  */
 670 UINT16 WINAPI GetDriveType16( UINT16 drive ) /* [in] number (NOT letter) of drive */
 671 {
 672     UINT type;
 673     WCHAR root[3];
 674
 675     root[0] = 'A' + drive;
 676     root[1] = ':';
 677     root[2] = 0;
 678     type = GetDriveTypeW( root );
 679     if (type == DRIVE_CDROM) type = DRIVE_REMOTE;
 680     else if (type == DRIVE_NO_ROOT_DIR) type = DRIVE_UNKNOWN;
 681     return type;
 682 }
 683
 684
 685 /***********************************************************************
 686  *           GetProfileSectionNames   (KERNEL.142)
 687  */
 688 WORD WINAPI GetProfileSectionNames16(LPSTR buffer, WORD size)
 689
 690 {
 691     return GetPrivateProfileSectionNamesA(buffer,size,"win.ini");
 692 }
 693
 694
 695 /***********************************************************************
 696  *           GetPrivateProfileSectionNames   (KERNEL.143)
 697  */
 698 WORD WINAPI GetPrivateProfileSectionNames16( LPSTR buffer, WORD size,
 699                                              LPCSTR filename )
 700 {
 701     return GetPrivateProfileSectionNamesA(buffer,size,filename);
 702 }
 703
 704
 705 /***********************************************************************
 706  *           CreateDirectory   (KERNEL.144)
 707  */
 708 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 709 {
 710     return CreateDirectoryA( path, NULL );
 711 }
 712
 713
 714 /***********************************************************************
 715  *           RemoveDirectory   (KERNEL.145)
 716  */
 717 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 718 {
 719     return RemoveDirectoryA( path );
 720 }
 721
 722
 723 /***********************************************************************
 724  *           DeleteFile   (KERNEL.146)
 725  */
 726 BOOL16 WINAPI DeleteFile16( LPCSTR path )
 727 {
 728     return DeleteFileA( path );
 729 }
 730
 731
 732 /***********************************************************************
 733  *           SetHandleCount   (KERNEL.199)
 734  */
 735 UINT16 WINAPI SetHandleCount16( UINT16 count )
 736 {
 737     return SetHandleCount( count );
 738 }
 739
 740
 741 /***********************************************************************
 742  *           GetShortPathName   (KERNEL.274)
 743  */
 744 WORD WINAPI GetShortPathName16( LPCSTR longpath, LPSTR shortpath, WORD len )
 745 {
 746     return GetShortPathNameA( longpath, shortpath, len );
 747 }
 748
 749
 750 /***********************************************************************
 751  *           WriteOutProfiles   (KERNEL.315)
 752  */
 753 void WINAPI WriteOutProfiles16(void)
 754 {
 755     WritePrivateProfileSectionW( NULL, NULL, NULL );
 756 }
 757
 758
 759 /***********************************************************************
 760  *           WritePrivateProfileStruct (KERNEL.406)
 761  */
 762 BOOL16 WINAPI WritePrivateProfileStruct16 (LPCSTR section, LPCSTR key,
 763                                            LPVOID buf, UINT16 bufsize, LPCSTR filename)
 764 {
 765     return WritePrivateProfileStructA( section, key, buf, bufsize, filename );
 766 }
 767
 768
 769 /***********************************************************************
 770  *           GetPrivateProfileStruct (KERNEL.407)
 771  */
 772 BOOL16 WINAPI GetPrivateProfileStruct16(LPCSTR section, LPCSTR key,
 773                                         LPVOID buf, UINT16 len, LPCSTR filename)
 774 {
 775     return GetPrivateProfileStructA( section, key, buf, len, filename );
 776 }
 777
 778
 779 /***********************************************************************
 780  *           GetCurrentDirectory   (KERNEL.411)
 781  */
 782 UINT16 WINAPI GetCurrentDirectory16( UINT16 buflen, LPSTR buf )
 783 {
 784     return GetCurrentDirectoryA( buflen, buf );
 785 }
 786
 787
 788 /***********************************************************************
 789  *           SetCurrentDirectory   (KERNEL.412)
 790  */
 791 BOOL16 WINAPI SetCurrentDirectory16( LPCSTR dir )
 792 {
 793     char fulldir[MAX_PATH];
 794
 795     if (!GetFullPathNameA( dir, MAX_PATH, fulldir, NULL )) return FALSE;
 796
 797     if (!SetCurrentDirectoryA( dir )) return FALSE;
 798
 799     if (fulldir[0] && fulldir[1] == ':')
 800     {
 801         TDB *pTask = GlobalLock16( GetCurrentTask() );
 802         char env_var[4] = "=A:";
 803
 804         env_var[1] = fulldir[0];
 805         SetEnvironmentVariableA( env_var, fulldir );
 806
 807         /* update the directory in the TDB */
 808         if (pTask)
 809         {
 810             pTask->curdrive = 0x80 | (fulldir[0] - 'A');
 811             GetShortPathNameA( fulldir + 2, pTask->curdir, sizeof(pTask->curdir) );
 812         }
 813     }
 814     return TRUE;
 815 }
 816
 817
 818 /*************************************************************************
 819  *           FindFirstFile   (KERNEL.413)
 820  */
 821 HANDLE16 WINAPI FindFirstFile16( LPCSTR path, WIN32_FIND_DATAA *data )
 822 {
 823     HGLOBAL16 h16;
 824     HANDLE handle, *ptr;
 825
 826     if (!(h16 = GlobalAlloc16( GMEM_MOVEABLE, sizeof(handle) ))) return INVALID_HANDLE_VALUE16;
 827     ptr = GlobalLock16( h16 );
 828     *ptr = handle = FindFirstFileA( path, data );
 829     GlobalUnlock16( h16 );
 830
 831     if (handle == INVALID_HANDLE_VALUE)
 832     {
 833         GlobalFree16( h16 );
 834         h16 = INVALID_HANDLE_VALUE16;
 835     }
 836     return h16;
 837 }
 838
 839
 840 /*************************************************************************
 841  *           FindNextFile   (KERNEL.414)
 842  */
 843 BOOL16 WINAPI FindNextFile16( HANDLE16 handle, WIN32_FIND_DATAA *data )
 844 {
 845     HANDLE *ptr;
 846     BOOL ret = FALSE;
 847
 848     if ((handle == INVALID_HANDLE_VALUE16) || !(ptr = GlobalLock16( handle )))
 849     {
 850         SetLastError( ERROR_INVALID_HANDLE );
 851         return ret;
 852     }
 853     ret = FindNextFileA( *ptr, data );
 854     GlobalUnlock16( handle );
 855     return ret;
 856 }
 857
 858
 859 /*************************************************************************
 860  *           FindClose   (KERNEL.415)
 861  */
 862 BOOL16 WINAPI FindClose16( HANDLE16 handle )
 863 {
 864     HANDLE *ptr;
 865
 866     if ((handle == INVALID_HANDLE_VALUE16) || !(ptr = GlobalLock16( handle )))
 867     {
 868         SetLastError( ERROR_INVALID_HANDLE );
 869         return FALSE;
 870     }
 871     FindClose( *ptr );
 872     GlobalUnlock16( handle );
 873     GlobalFree16( handle );
 874     return TRUE;
 875 }
 876
 877
 878 /***********************************************************************
 879  *           WritePrivateProfileSection   (KERNEL.416)
 880  */
 881 BOOL16 WINAPI WritePrivateProfileSection16( LPCSTR section,
 882                                             LPCSTR string, LPCSTR filename )
 883 {
 884     return WritePrivateProfileSectionA( section, string, filename );
 885 }
 886
 887
 888 /***********************************************************************
 889  *           WriteProfileSection   (KERNEL.417)
 890  */
 891 BOOL16 WINAPI WriteProfileSection16( LPCSTR section, LPCSTR keys_n_values)
 892 {
 893     return WritePrivateProfileSection16( section, keys_n_values, "win.ini");
 894 }
 895
 896
 897 /***********************************************************************
 898  *           GetPrivateProfileSection   (KERNEL.418)
 899  */
 900 INT16 WINAPI GetPrivateProfileSection16( LPCSTR section, LPSTR buffer,
 901                                          UINT16 len, LPCSTR filename )
 902 {
 903     return GetPrivateProfileSectionA( section, buffer, len, filename );
 904 }
 905
 906
 907 /***********************************************************************
 908  *           GetProfileSection   (KERNEL.419)
 909  */
 910 INT16 WINAPI GetProfileSection16( LPCSTR section, LPSTR buffer, UINT16 len )
 911 {
 912     return GetPrivateProfileSection16( section, buffer, len, "win.ini" );
 913 }
 914
 915
 916 /**************************************************************************
 917  *           GetFileAttributes   (KERNEL.420)
 918  */
 919 DWORD WINAPI GetFileAttributes16( LPCSTR name )
 920 {
 921     return GetFileAttributesA( name );
 922 }
 923
 924
 925 /**************************************************************************
 926  *              SetFileAttributes       (KERNEL.421)
 927  */
 928 BOOL16 WINAPI SetFileAttributes16( LPCSTR lpFileName, DWORD attributes )
 929 {
 930     return SetFileAttributesA( lpFileName, attributes );
 931 }
 932
 933
 934 /***********************************************************************
 935  *           GetDiskFreeSpace   (KERNEL.422)
 936  */
 937 BOOL16 WINAPI GetDiskFreeSpace16( LPCSTR root, LPDWORD cluster_sectors,
 938                                   LPDWORD sector_bytes, LPDWORD free_clusters,
 939                                   LPDWORD total_clusters )
 940 {
 941     return GetDiskFreeSpaceA( root, cluster_sectors, sector_bytes,
 942                                 free_clusters, total_clusters );
 943 }
 944
 945 /***********************************************************************
 946  *      FileCDR (KERNEL.130)
 947  */
 948 FARPROC16 WINAPI FileCDR16(FARPROC16 x)
 949 {
 950     FIXME("(%p): stub\n", x);
 951     return (FARPROC16)TRUE;
 952 }