/*
 *  call-seq:
 *     Dir.mkdir( string [, integer] ) => 0
 *
 *  Makes a new directory named by <i>string</i>, with permissions
 *  specified by the optional parameter <i>anInteger</i>. The
 *  permissions may be modified by the value of
 *  <code>File::umask</code>, and are ignored on NT. Raises a
 *  <code>SystemCallError</code> if the directory cannot be created. See
 *  also the discussion of permissions in the class documentation for
 *  <code>File</code>.
 *
 */
static VALUE
dir_s_mkdir(argc, argv, obj)
    int argc;
    VALUE *argv;
    VALUE obj;
{
    VALUE path, vmode;
    int mode;

    if (rb_scan_args(argc, argv, "11", &path, &vmode) == 2) {
        mode = NUM2INT(vmode);
    }
    else {
        mode = 0777;
    }

    check_dirname(&path);
    if (mkdir(RSTRING(path)->ptr, mode) == -1)
        rb_sys_fail(RSTRING(path)->ptr);

    return INT2FIX(0);
}