err = ioctl( osfd, FIONBIO, (char *) &one, sizeof(one));
err = so_ioctl( osfd, FIONBIO, (char *) &one, sizeof(one));
_MD_MakeNonblock(PRFileDesc *fd){    PRInt32 osfd = fd->secret->md.osfd;    PRInt32 err;    PRUint32  one = 1;        if (osfd <= 2) {        /* Don't mess around with stdin, stdout or stderr */        return;    }    err = ioctl( osfd, FIONBIO, (char *) &one, sizeof(one));    if ( err != 0 )    {        err = sock_errno();        _PR_MD_MAP_SOCKET_ERROR(err);    }}