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/*****************************************************************************/

/*

 *      linux/drivers/char/sysrq.c

 *

 *      Copyright (C) 1999, Greg Ungerer (gerg@moreton.com.au)

 *

 *      Process System Request Magic Keys. Used for debugging...

 */

/*****************************************************************************/

/*

 *      Key that marks start of magic key sequence.

 *      Default is CTRL-X. When using magic system request key mode,

 *      any of these characters will disappear from the data stream.

 *      So choose carefully!

 */

int magic_sysrq_master = 24;

/*

 *      Mode we are in. Is next char expected to be a command.

 */

int magic_sysrq_mode = 0;

/*****************************************************************************/

int magic_sysrq_key(int ch)

{

        if (magic_sysrq_mode == 0) {

                if (ch == magic_sysrq_master) {

                        magic_sysrq_mode++;

                        return(1);

                }

                return(0);

        }

        switch (ch) {

        case 'a':

                printk("Show Free Areas:\n");

                show_free_areas();

                break;

        case 'b':

                printk("Show Buffers:\n");

                show_buffers();

                break;

#if 0

        case 'r':

                printk("Show Registers:\n");

                if (pt_regs)

                        show_regs(pt_regs);

                break;

#endif

        case 't':

                printk("Show State:\n");

                show_state();

                break;

        case 'm':

                printk("Show Memory:\n");

                show_mem();

                break;

        case 'n':

                printk("Show Net Buffers:\n");

                show_net_buffers();

                break;

        default:

                /* Unkown command?? */

                break;

        }

        magic_sysrq_mode = 0;

        return(1);

}

/*****************************************************************************/