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partinfo.c
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partinfo.c
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/*================================================================================*/
/* Copyright (C) 2009, Don Milne. */
/* All rights reserved. */
/* See LICENSE.TXT for conditions on copying, distribution, modification and use. */
/*================================================================================*/
#include "djwarning.h"
#include <stdarg.h>
#include <windef.h>
#include <winbase.h>
#include <wingdi.h>
#include <winuser.h>
#include "partinfo.h"
#include "env.h"
#include "ids.h"
#define IDD_FIRST 200
#define N_COLUMNS 6
#define N_ROWS 4
#define COL_BOOTABLE 0
#define COL_CHS_FIRST 1
#define COL_PART_CODE 2
#define COL_CHS_LAST 3
#define COL_LBA_START 4
#define COL_N_SECTORS 5
static PSTR pszNOYES;
static PSTR pszDLG_PARTINFO;
/*....................................................*/
static void
InitDialog(HWND hDlg, BYTE *MBR)
{
PartTableEntry *p = (PartTableEntry*)(MBR+446);
char sz[256];
int nPart,iCtl;
for (nPart=0; nPart<N_ROWS; nPart++) {
iCtl = IDD_FIRST + nPart*N_COLUMNS;
RSTR(NOYES); // inits pszNOYES
// bootable?
if (p->Status==0x80) sz[0]=pszNOYES[1];
else if (p->Status==0x00) sz[0]=pszNOYES[0];
else sz[0]='?';
sz[1] = (char)0;
SetDlgItemText(hDlg,iCtl,sz);
// CHS address of first sector
wsprintf(sz,"c=%lu,h=%lu,s=%lu",
p->pstart_chs_cyl+((p->pstart_chs_sect<<2)&0x300),
p->pstart_chs_head,
p->pstart_chs_sect & 0x3F);
SetDlgItemText(hDlg,iCtl+1,sz);
// Partition type code
wsprintf(sz,"0x%02lx",p->PartType);
SetDlgItemText(hDlg,iCtl+2,sz);
// CHS address of last sector
wsprintf(sz,"c=%lu,h=%lu,s=%lu",
p->pend_chs_cyl+((p->pend_chs_sect<<2)&0x300),
p->pend_chs_head,
p->pend_chs_sect & 0x3F);
SetDlgItemText(hDlg,iCtl+3,sz);
// LBA address of first sector
SetDlgItemInt(hDlg,iCtl+4,p->loStartLBA + (p->hiStartLBA<<16),FALSE);
// Number of sectors.
SetDlgItemInt(hDlg,iCtl+5,p->loNumSectors + (p->hiNumSectors<<16),FALSE);
p++;
}
}
/*....................................................*/
static BOOL
IsMBR(BYTE *MBR)
{
PPART pPart = (PPART)(MBR+440);
UINT i;
if (MBR[510]!=0x55 || MBR[511]!=0xAA) return FALSE;
for (i=0; i<4; i++) {
// TODO: maybe add more checks.
if (pPart->Status!=0 && pPart->Status==0x80) return FALSE;
pPart++;
}
return TRUE;
}
/*....................................................*/
BOOL CALLBACK
PartitionInfoDlgProc(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
static BYTE MBR[512];
switch (iMsg) {
case WM_INITDIALOG:
CopyMemory(MBR, (BYTE*)lParam, 512);
if (!IsMBR(MBR)) FillMemory(MBR,512,0);
InitDialog(hDlg,MBR);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
case IDCANCEL:
EndDialog(hDlg, LOWORD(wParam));
break;
default:
return FALSE;
}
break;
default:
return FALSE;
}
return TRUE;
}
/*....................................................*/
PUBLIC void
PartInfo_Show(HINSTANCE hInstRes, HWND hWndParent, BYTE *MBR)
{
DialogBoxParam(hInstRes,RSTR(DLG_PARTINFO),hWndParent,PartitionInfoDlgProc,(LPARAM)MBR);
}
/*.....................................................*/
/* end of partinfo.c */