#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/sysctl.h>
#include <linux/swapctl.h>
#include <linux/proc_fs.h>
#include <linux/malloc.h>
#include <linux/stat.h>
#include <linux/ctype.h>
#include <asm/bitops.h>
#include <asm/segment.h>
#include <asm/uaccess.h>
#include <linux/utsname.h>

#include <linux/obd_support.h>

struct ctl_table_header *obd_table_header = NULL;

static int vars[2];
static int index = 0;

static int obd_sctl_vars( ctl_table * table, int write, struct file *
			  filp, void * buffer, size_t * lenp );
static int obd_sctl_reset( ctl_table * table, int write, struct file
			   * filp, void * buffer, size_t * lenp );



#define OBD_SYSCTL 1

#define OBD_DEBUG  	    1  	    /* control debugging */
#define OBD_ENTRY	    2       /* control enter/leave pattern */
#define OBD_TIMEOUT         3       /* timeout on upcalls to become intrble */
#define OBD_HARD            4       /* mount type "hard" or "soft" */
#define OBD_VARS            5       
#define OBD_INDEX           6
#define OBD_RESET           7

#define OBD_VARS_SLOT       2

static ctl_table obd_table[] = {
	{OBD_DEBUG, "debug", &obd_debug_level, sizeof(int), 0644, NULL, &proc_dointvec},
	{OBD_ENTRY, "trace", &obd_print_entry, sizeof(int), 0644, NULL, &proc_dointvec},
 	{OBD_VARS, "vars", &vars[0], sizeof(int), 0644, NULL, &proc_dointvec},
 	{OBD_INDEX, "index", &index, sizeof(int), 0644, NULL, &obd_sctl_vars},
 	{OBD_RESET, "reset", NULL, 0, 0644, NULL, &obd_sctl_reset},
	{ 0 }
};

#if 0
static ctl_table jukebox_table[] = {
       {OBD_SYSCTL, "obd",    NULL, 0, 0555, obd_table},
       {0}
};

#endif
void obd_sysctl_init (void)
{
#ifdef CONFIG_SYSCTL
	if ( !obd_table_header )
		obd_table_header = register_sysctl_table(jukebox_table, 0); 
#endif
}

void obd_sysctl_clean (void)
{
#ifdef CONFIG_SYSCTL
	if ( obd_table_header )
		unregister_sysctl_table(obd_table_header);
	obd_table_header = NULL;
#endif
}

int obd_sctl_reset (ctl_table * table, int write, 
		    struct file * filp, void * buffer, 
		    size_t * lenp)
{
	if ( write ) {
		/* do something here */
		vars[0]=0;
		vars[1]=0;
	}

	*lenp = 0;
	return 0;
}

int obd_sctl_vars (ctl_table * table, int write, 
		   struct file * filp, void * buffer, 
		   size_t * lenp)
{
	int rc;

	rc = proc_dointvec(table, write, filp, buffer, lenp);

	if ( rc ) 
		return rc;

	if ( index < 0 || index > 1 ) {
		printk("Index illegal!\n");
		index = 0;
	} else {
		obd_table[OBD_VARS_SLOT].data = &vars[index];
	}

	return rc; 
}