#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/personality.h>

int
set_persona (unsigned long p)
{
  fprintf (stderr, "Setting personality '%lu'\n", p);

  int status = personality(p);
  if (status == -1)
    fprintf(stderr, "Set failed: %s\n", strerror(errno));

  fprintf(stderr, "Set OK\n");

  return status;
}

int
get_persona (void)
{
  fprintf (stderr, "Getting personality\n");

  int status = personality(0xffffffff);
  if (status == -1)
    fprintf(stderr, "Get failed: %s\n", strerror(errno));

  fprintf(stderr, "Get returned '%d'\n", status);

  return status;
}

int
main (void)
{
  get_persona();
  set_persona(PER_LINUX32);
  get_persona();
  set_persona(PER_LINUX);
  get_persona();
  return 0;
}