Function ql_syscall_getsockopt

qiling/os/posix/syscall/socket.py:312–340

(ql: Qiling, sockfd: int, level: int, optname: int, optval_addr: int, optlen_addr: int)

def ql_syscall_getsockopt(ql: Qiling, sockfd: int, level: int, optname: int, optval_addr: int, optlen_addr: int):
    sock = get_opened_socket(ql.os, sockfd)

    if isinstance(sock, int):
        return sock

    vsock_level = level
    hsock_level = __host_socket_level(vsock_level, ql.arch.type)

    ql.log.debug(f'Converted emulated socket level {vsock_level} to host socket level {hsock_level}')

    vsock_opt = optname
    hsock_opt = __host_socket_option(vsock_level, vsock_opt, ql.arch.type, ql.os.type)

    ql.log.debug(f'Converted emulated socket option {vsock_opt} to host socket option {hsock_opt}')

    optlen = min(ql.mem.read_ptr(optlen_addr, 4, signed=True), 1024)

    if optlen < 0:
        return -EINVAL

    try:
        optval = sock.getsockopt(hsock_level, hsock_opt, optlen)
    except (ConnectionError, OSError) as ex:
        return -ex.errno

    ql.mem.write(optval_addr, optval)

    return 0


def ql_syscall_setsockopt(ql: Qiling, sockfd: int, level: int, optname: int, optval_addr: int, optlen: int):