#include <dos.h>

#define unint unsigned int
#define uchar unsigned char

#define TESTING

/*
 FILES and BUFFERS are free functions.  Use them without restriction anywhere.

    Author: Ben Morris
    Date  : July 2nd, 1992.

 */

/*
 Code to count number of FILES as set in config.sys.
 */

int FILES( void )
{
    union REGS regs;
    struct SREGS sregs;
    unint far *ptr;
    int numfiles = 0;

    regs.h.ah = 0x52;
    intdosx( &regs, &regs, &sregs );

    ptr = (unint far *) MK_FP( sregs.es, regs.x.bx+0x04 );
    ptr = (unint far *) MK_FP( ptr[1], ptr[0] );

    while( FP_OFF( ptr ) != 0xFFFF )
    {
        numfiles += ptr[2];
        ptr = (unsigned int far *) MK_FP( ptr[1], ptr[0] );
    }

    return numfiles;
}

/*
 Code to count number of BUFFERS as set in CONFIG.SYS.
 */

int BUFFERS( void )
{
    uchar far *ptr;
    struct REGPACK regs;
    int numbuffers = 0;

    regs.r_ax = 0x5200;

    intr( 0x21, &regs );
    ptr = (uchar far *) MK_FP( regs.r_es, regs.r_bx );

    numbuffers = *(ptr+0x3F);

    return numbuffers;
}

#ifdef TESTING
void main( void )
{
    printf( "FILES=%d\n", FILES() );
    printf( "BUFFERS=%d\n", BUFFERS() );
}
#endif