dlls/w32sys.dll16/w32sys.c

   1 /*
   2  * W32SYS
   3  * helper DLL for Win32s
   4  *
   5  * Copyright (c) 1996 Anand Kumria
   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
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wine/windef16.h"
  28 #include "wine/winbase16.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(dll);
  32
  33 typedef struct
  34 {
  35     BYTE   bMajor;
  36     BYTE   bMinor;
  37     WORD   wBuildNumber;
  38     BOOL16 fDebug;
  39 } WIN32SINFO, *LPWIN32SINFO;
  40
  41 /***********************************************************************
  42  *           GetWin32sInfo   (W32SYS.12)
  43  * RETURNS
  44  *  0 on success, 1 on failure
  45  */
  46 WORD WINAPI GetWin32sInfo16(
  47         LPWIN32SINFO lpInfo     /* [out] Win32S special information */
  48 ) {
  49     lpInfo->bMajor = 1;
  50     lpInfo->bMinor = 3;
  51     lpInfo->wBuildNumber = 0;
  52     lpInfo->fDebug = FALSE;
  53
  54     return 0;
  55 }
  56
  57 /***********************************************************************
  58  *            GetW32SysVersion  (W32SYS.5)
  59  */
  60 WORD WINAPI GetW32SysVersion16(void)
  61 {
  62     return 0x100;
  63 }
  64
  65 /***********************************************************************
  66  *           GetPEResourceTable   (W32SYS.7)
  67  * retrieves the resourcetable from the passed filedescriptor
  68  * RETURNS
  69  *      dunno what.
  70  */
  71 WORD WINAPI GetPEResourceTable16(
  72         HFILE16 hf              /* [in] Handle of executable file */
  73 ) {
  74         return 0;
  75 }
  76
  77 /***********************************************************************
  78  *           LoadPeResource (W32SYS.11)
  79  */
  80 DWORD WINAPI LoadPeResource16(WORD x,SEGPTR y) {
  81         FIXME("(0x%04x,0x%08lx),stub!\n",x,y);
  82         return 0;
  83 }
  84
  85
  86 /**********************************************************************
  87  *              IsPeFormat              (W32SYS.2)
  88  * Check if a file is a PE format executable.
  89  * RETURNS
  90  *  TRUE, if it is.
  91  *  FALSE if not.
  92  */
  93 BOOL16 WINAPI IsPeFormat16( LPSTR fn,      /* [in] filename of executable */
  94                             HFILE16 hf16 ) /* [in] open file, if filename is NULL */
  95 {
  96     BOOL16 ret = FALSE;
  97     IMAGE_DOS_HEADER mzh;
  98     OFSTRUCT ofs;
  99     DWORD xmagic;
 100     HFILE hf;
 101
 102     if (fn) hf = OpenFile(fn,&ofs,OF_READ);
 103     else hf = (HFILE)DosFileHandleToWin32Handle( hf16 );
 104     if (hf == HFILE_ERROR) return FALSE;
 105     _llseek(hf,0,SEEK_SET);
 106     if (sizeof(mzh)!=_lread(hf,&mzh,sizeof(mzh))) goto done;
 107     if (mzh.e_magic!=IMAGE_DOS_SIGNATURE) goto done;
 108     _llseek(hf,mzh.e_lfanew,SEEK_SET);
 109     if (sizeof(DWORD)!=_lread(hf,&xmagic,sizeof(DWORD))) goto done;
 110     ret = (xmagic == IMAGE_NT_SIGNATURE);
 111  done:
 112     if (fn) _lclose(hf);
 113     return ret;
 114 }