/************************************************************************
  Program to print the addresses corresponding to kernel symbols. These
  addresses can be used (as in jiffyprint.c) to seek into /dev/kmem
  and manipulate kernel data structures 
************************************************************************/

#include <unistd.h>
#include <linux/unistd.h>	/* Ehrm... well, well, well... */
#include <linux/module.h>
#include <stdlib.h> /* for malloc */
/*
 * This is here as syscall.h and sys/syscall.h redefine the defines in
 * unistd.h why doesn't unistd #include them?
 */

#ifdef __cplusplus
extern "C" int syscall(int, ...);
#else
extern int syscall(int, ...);
#endif

static int get_kernel_syms(struct kernel_sym *buffer)
{
	return syscall( __NR_get_kernel_syms, buffer);
}

main()
{
  int num, val, i;
  struct kernel_sym *ksym, *ptr;
  
  val = get_kernel_syms(NULL);
  printf("There are %d symbols. Error = %d\n", val, errno);

  ksym = (struct kernel_sym *) malloc(sizeof(struct kernel_sym) * val);
  if (ksym == NULL)
    {
      printf("Could not allocate ksym memory.\n");
      exit(-1);
    }
  num = val;
  val = get_kernel_syms(ksym);
  printf("Read %d symbols. Error = %d\n", val, errno);
  printf("Address       Name\n");
  for (i = 0, ptr = ksym; i < num; i++, ptr++) 
    printf("0x%x      %s\n", ptr->value, ptr->name);

}