Hi Matthew!

[Warm boot of OS/2 via VDM]
 MJ> I know VDM's are designed to protect the rest of OS/2 from crazy
DOS program(mer)s but I would
 MJ> be very grateful if someone could tell me how to invoke a warm boot
of OS/2 from a DOS program running in a VDM?

void DosReboot (void)
{
    HFILE  hf;
    ULONG dummy;
    ULONG rc;

    rc = DosOpen("DOS$", &hf, &dummy, 0L, FILE_NORMAL, FILE_OPEN,
        OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYNONE |
        OPEN_FLAGS_FAIL_ON_ERROR, NULL);
    if(!rc)
    {
       printf ("\nShutdown...");
       rc = DosShutdown(0L);
       if (rc) ErrorProc(rc);

       /* 32-Bit reboot */
       DosDevIOCtl( hf, 0xd5, 0xab, NULL, 0, NULL, NULL, 0, NULL );

       /* old 16-bit reboot
       DosDevIOCtl(NULL, NULL, 0xab, 0xd5, hf);
       */
       DosClose(hf);
    }
    else
      printf ("\nDOS.SYS not installed. Can't Reboot.");
}

This is a derivate of Peter's reboot-snippet. You can reboot OS/2 from a
OS/2 program. I've just no idea how to do this from a VDM. Perhaps you can
establish a named pipe connect via the VDM and the "OS/2 terminator
program". Or you can use DOS.SYS's services as well from a VDM session
? But I think there is no way to perform a DosShutdown from a VDM, so files
would be left corrupted, etc...
I believe you need this stuff for some scheduling (Cron) purposes ? But I'd
personally go out and kick the programmer who reboots my OS/2 machine from
his application... you'll know what's up when the mob is knocking at your
door :)
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