Method: Dir#fileno

Defined in:
dir.c

#fileno ⇒ Integer

Returns the file descriptor used in dir.

d = Dir.new('..')
d.fileno # => 8

This method uses the dirfd() function defined by POSIX 2008; the method is not implemented on non-POSIX platforms (raises NotImplementedError).

Returns:


779
780
781
782
783
784
785
786
787
788
789
790
 
# File 'dir.c', line 779

static VALUE
dir_fileno(VALUE dir)
{
    struct dir_data *dirp;
    int fd;

    GetDIR(dir, dirp);
    fd = dirfd(dirp->dir);
    if (fd == -1)
        rb_sys_fail("dirfd");
    return INT2NUM(fd);
}