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/****************************************************************************
*
* SciTech OS Portability Manager Library
*
* ========================================================================
*
* The contents of this file are subject to the SciTech MGL Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.scitechsoft.com/mgl-license.txt
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
*
* The Initial Developer of the Original Code is SciTech Software, Inc.
* All Rights Reserved.
*
* ========================================================================
*
* Language: ANSI C
* Environment: Linux/QNX
*
* Description: Program to restore the console state state from a previously
* saved state if the program crashed while the console
* was in graphics mode.
*
****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include "pmapi.h"
void setVideoMode(int mode)
{
RMREGS r;
r.x.ax = mode;
PM_int86(0x10, &r, &r);
}
int main(void)
{
PM_HWND hwndConsole;
ulong stateSize;
void *stateBuf;
FILE *f;
/* Write the saved console state buffer to disk */
if ((f = fopen("/etc/pmsave.dat","rb")) == NULL) {
printf("Unable to open /etc/pmsave.dat for reading!\n");
return -1;
}
fread(&stateSize,1,sizeof(stateSize),f);
if (stateSize != PM_getConsoleStateSize()) {
printf("Size mismatch in /etc/pmsave.dat!\n");
return -1;
}
if ((stateBuf = PM_malloc(stateSize)) == NULL) {
printf("Unable to allocate console state buffer!\n");
return -1;
}
fread(stateBuf,1,stateSize,f);
fclose(f);
/* Open the console */
hwndConsole = PM_openConsole(0,0,0,0,0,true);
/* Forcibly set 80x25 text mode using the BIOS */
setVideoMode(0x3);
/* Restore the previous console state */
PM_restoreConsoleState(stateBuf,0);
PM_closeConsole(hwndConsole);
PM_free(stateBuf);
printf("Console state successfully restored from /etc/pmsave.dat\n");
return 0;
}
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