dlls/kernel/file16.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 #define NONAMELESSUNION
  34 #define NONAMELESSSTRUCT
  35 #include "winerror.h"
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "winreg.h"
  39 #include "winternl.h"
  40 #include "wine/winbase16.h"
  41 #include "wine/server.h"
  42 #include "kernel_private.h"
  43 #include "wine/unicode.h"
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(file);
  47
  48 /***********************************************************************
  49  *           _hread16   (KERNEL.349)
  50  */
  51 LONG WINAPI _hread16( HFILE16 hFile, LPVOID buffer, LONG count)
  52 {
  53     return _lread( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, count );
  54 }
  55
  56
  57 /***********************************************************************
  58  *           _hwrite   (KERNEL.350)
  59  */
  60 LONG WINAPI _hwrite16( HFILE16 hFile, LPCSTR buffer, LONG count )
  61 {
  62     return _hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, count );
  63 }
  64
  65 /***********************************************************************
  66  *           _lclose   (KERNEL.81)
  67  */
  68 HFILE16 WINAPI _lclose16( HFILE16 hFile )
  69 {
  70     if ((hFile >= DOS_TABLE_SIZE) || !dos_handles[hFile])
  71     {
  72         SetLastError( ERROR_INVALID_HANDLE );
  73         return HFILE_ERROR16;
  74     }
  75     TRACE("%d (handle32=%p)\n", hFile, dos_handles[hFile] );
  76     CloseHandle( dos_handles[hFile] );
  77     dos_handles[hFile] = 0;
  78     return 0;
  79 }
  80
  81 /***********************************************************************
  82  *           _lcreat   (KERNEL.83)
  83  */
  84 HFILE16 WINAPI _lcreat16( LPCSTR path, INT16 attr )
  85 {
  86     return Win32HandleToDosFileHandle( (HANDLE)_lcreat( path, attr ) );
  87 }
  88
  89 /***********************************************************************
  90  *           _llseek   (KERNEL.84)
  91  *
  92  * FIXME:
  93  *   Seeking before the start of the file should be allowed for _llseek16,
  94  *   but cause subsequent I/O operations to fail (cf. interrupt list)
  95  *
  96  */
  97 LONG WINAPI _llseek16( HFILE16 hFile, LONG lOffset, INT16 nOrigin )
  98 {
  99     return SetFilePointer( DosFileHandleToWin32Handle(hFile), lOffset, NULL, nOrigin );
 100 }
 101
 102
 103 /***********************************************************************
 104  *           _lopen   (KERNEL.85)
 105  */
 106 HFILE16 WINAPI _lopen16( LPCSTR path, INT16 mode )
 107 {
 108     return Win32HandleToDosFileHandle( (HANDLE)_lopen( path, mode ) );
 109 }
 110
 111
 112 /***********************************************************************
 113  *           _lread16   (KERNEL.82)
 114  */
 115 UINT16 WINAPI _lread16( HFILE16 hFile, LPVOID buffer, UINT16 count )
 116 {
 117     return (UINT16)_lread((HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 118 }
 119
 120
 121 /***********************************************************************
 122  *           _lwrite   (KERNEL.86)
 123  */
 124 UINT16 WINAPI _lwrite16( HFILE16 hFile, LPCSTR buffer, UINT16 count )
 125 {
 126     return (UINT16)_hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 127 }
 128
 129 /***********************************************************************
 130  *           _hread (KERNEL.349)
 131  */
 132 LONG WINAPI WIN16_hread( HFILE16 hFile, SEGPTR buffer, LONG count )
 133 {
 134     LONG maxlen;
 135
 136     TRACE("%d %08lx %ld\n", hFile, (DWORD)buffer, count );
 137
 138     /* Some programs pass a count larger than the allocated buffer */
 139     maxlen = GetSelectorLimit16( SELECTOROF(buffer) ) - OFFSETOF(buffer) + 1;
 140     if (count > maxlen) count = maxlen;
 141     return _lread((HFILE)DosFileHandleToWin32Handle(hFile), MapSL(buffer), count );
 142 }
 143
 144
 145 /***********************************************************************
 146  *           _lread (KERNEL.82)
 147  */
 148 UINT16 WINAPI WIN16_lread( HFILE16 hFile, SEGPTR buffer, UINT16 count )
 149 {
 150     return (UINT16)WIN16_hread( hFile, buffer, (LONG)count );
 151 }
 152
 153
 154 /***********************************************************************
 155  *           DeleteFile   (KERNEL.146)
 156  */
 157 BOOL16 WINAPI DeleteFile16( LPCSTR path )
 158 {
 159     return DeleteFileA( path );
 160 }
 161
 162 /**************************************************************************
 163  *           GetFileAttributes   (KERNEL.420)
 164  */
 165 DWORD WINAPI GetFileAttributes16( LPCSTR name )
 166 {
 167     return GetFileAttributesA( name );
 168 }
 169
 170
 171 /***********************************************************************
 172  *           GetTempFileName   (KERNEL.97)
 173  */
 174 UINT16 WINAPI GetTempFileName16( BYTE drive, LPCSTR prefix, UINT16 unique,
 175                                  LPSTR buffer )
 176 {
 177     char temppath[MAX_PATH];
 178     char *prefix16 = NULL;
 179     UINT16 ret;
 180
 181     if (!(drive & ~TF_FORCEDRIVE)) /* drive 0 means current default drive */
 182     {
 183         GetCurrentDirectoryA(sizeof(temppath), temppath);
 184         drive |= temppath[0];
 185     }
 186
 187     if (drive & TF_FORCEDRIVE)
 188     {
 189         char    d[3];
 190
 191         d[0] = drive & ~TF_FORCEDRIVE;
 192         d[1] = ':';
 193         d[2] = '\0';
 194         if (GetDriveTypeA(d) == DRIVE_NO_ROOT_DIR)
 195         {
 196             drive &= ~TF_FORCEDRIVE;
 197             WARN("invalid drive %d specified\n", drive );
 198         }
 199     }
 200
 201     if (drive & TF_FORCEDRIVE)
 202         sprintf(temppath,"%c:", drive & ~TF_FORCEDRIVE );
 203     else
 204         GetTempPathA( MAX_PATH, temppath );
 205
 206     if (prefix)
 207     {
 208         prefix16 = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + 2);
 209         *prefix16 = '~';
 210         strcpy(prefix16 + 1, prefix);
 211     }
 212
 213     ret = GetTempFileNameA( temppath, prefix16, unique, buffer );
 214
 215     if (prefix16) HeapFree(GetProcessHeap(), 0, prefix16);
 216     return ret;
 217 }
 218
 219 /**************************************************************************
 220  *              SetFileAttributes       (KERNEL.421)
 221  */
 222 BOOL16 WINAPI SetFileAttributes16( LPCSTR lpFileName, DWORD attributes )
 223 {
 224     return SetFileAttributesA( lpFileName, attributes );
 225 }
 226
 227
 228 /***********************************************************************
 229  *           SetHandleCount   (KERNEL.199)
 230  */
 231 UINT16 WINAPI SetHandleCount16( UINT16 count )
 232 {
 233     return SetHandleCount( count );
 234 }
 235
 236
 237 /*************************************************************************
 238  *           FindFirstFile   (KERNEL.413)
 239  */
 240 HANDLE16 WINAPI FindFirstFile16( LPCSTR path, WIN32_FIND_DATAA *data )
 241 {
 242     HGLOBAL16 h16;
 243     HANDLE handle, *ptr;
 244
 245     if (!(h16 = GlobalAlloc16( GMEM_MOVEABLE, sizeof(handle) ))) return INVALID_HANDLE_VALUE16;
 246     ptr = GlobalLock16( h16 );
 247     *ptr = handle = FindFirstFileA( path, data );
 248     GlobalUnlock16( h16 );
 249
 250     if (handle == INVALID_HANDLE_VALUE)
 251     {
 252         GlobalFree16( h16 );
 253         h16 = INVALID_HANDLE_VALUE16;
 254     }
 255     return h16;
 256 }
 257
 258
 259 /*************************************************************************
 260  *           FindNextFile   (KERNEL.414)
 261  */
 262 BOOL16 WINAPI FindNextFile16( HANDLE16 handle, WIN32_FIND_DATAA *data )
 263 {
 264     HANDLE *ptr;
 265     BOOL ret = FALSE;
 266
 267     if ((handle == INVALID_HANDLE_VALUE16) || !(ptr = GlobalLock16( handle )))
 268     {
 269         SetLastError( ERROR_INVALID_HANDLE );
 270         return ret;
 271     }
 272     ret = FindNextFileA( *ptr, data );
 273     GlobalUnlock16( handle );
 274     return ret;
 275 }
 276
 277
 278 /*************************************************************************
 279  *           FindClose   (KERNEL.415)
 280  */
 281 BOOL16 WINAPI FindClose16( HANDLE16 handle )
 282 {
 283     HANDLE *ptr;
 284
 285     if ((handle == INVALID_HANDLE_VALUE16) || !(ptr = GlobalLock16( handle )))
 286     {
 287         SetLastError( ERROR_INVALID_HANDLE );
 288         return FALSE;
 289     }
 290     FindClose( *ptr );
 291     GlobalUnlock16( handle );
 292     GlobalFree16( handle );
 293     return TRUE;
 294 }