#define _GNU_SOURCE 1

#include <stdlib.h>
#include <unistd.h>
#include <sys/inotify.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <assert.h>

int
main ()
{
  int file = creat ("foo", S_IRUSR | S_IWUSR);
  assert_perror (errno);
  close (file);

  int notifications = inotify_init ();
  assert_perror (errno);

  int watch = inotify_add_watch (notifications, "foo",
				 IN_MODIFY | IN_ATTRIB
				 | IN_DELETE_SELF | IN_MOVE_SELF);
  assert_perror (errno);

  if (fork () == 0)
    {
      unlink ("foo");
      assert_perror (errno);
      exit (EXIT_SUCCESS);
    }

  struct inotify_event event;
  ssize_t count = read (notifications, &event, sizeof event);

  assert (count == sizeof event);
  assert (event.mask == IN_ATTRIB);

  struct stat st;
  stat ("foo", &st);
  if (errno != ENOENT)
    {
      printf ("funny, errno = %m, nlink = %li\n",
	      st.st_nlink);
      abort ();
    }

  count = read (notifications, &event, sizeof event);

  assert (count == sizeof event);
  assert (event.mask == IN_DELETE_SELF);

  /* Bug #2: this returns EINVAL for no good reason.  */
  /* inotify_rm_watch (notifications, watch); */
  /* assert_perror (errno); */

  return EXIT_SUCCESS;
}