nfs_boot_getfh
if (nfs_boot_getfh(&nfs_diskless.nd_boot, "root", &nfs_diskless.nd_root, -1))
error = nfs_boot_getfh(&nfs_diskless.nd_boot, "swap", &nfs_diskless.nd_swap, 5);
int nfs_boot_getfh(struct sockaddr_in *bpsin, char *key,