/* DF-3257: cd9660_ioctl catch-all ENOTTY hides FIOSEEKDATA/FIOSEEKHOLE:
 * lseek(SEEK_DATA) fails EINVAL on cd9660 while ufs/ext2 dispatch. */
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
int main(int argc, char **argv) {
    int fd = open(argv[1], O_RDONLY);
    if (fd < 0) { perror("open"); return 1; }
    off_t r = lseek(fd, 0, SEEK_DATA);
    printf("lseek(%s, 0, SEEK_DATA) = %lld errno=%d\n", argv[1], (long long)r, errno);
    off_t h = lseek(fd, 0, SEEK_HOLE);
    printf("lseek(%s, 0, SEEK_HOLE) = %lld errno=%d\n", argv[1], (long long)h, errno);
    close(fd);
    return (r < 0) ? 2 : 0;  /* EINVAL == the gap demonstrated */
}