Equivalent to File::chmod, but does not follow symbolic links (so it will
change the permissions associated with the link, not the file referenced by
the link). Often not available.
static VALUE
rb_file_s_lchmod(int argc, VALUE *argv)
{
mode_t mode;
apply2args(1);
mode = NUM2MODET(*argv++);
return apply2files(lchmod_internal, argc, argv, &mode);
}