Function init_can_socket

api/src/oscc.c:779–852

int init_can_socket( const char *can_channel,
                     struct timeval *tv )
{
    if( can_channel == NULL )
    {
        return UNINITIALIZED_SOCKET;
    }

    int valid = UNINITIALIZED_SOCKET;
    int sock = UNINITIALIZED_SOCKET;
    struct ifreq ifr;
    memset( &ifr, 0, sizeof( ifr ) );

    sock = socket( PF_CAN, SOCK_RAW, CAN_RAW );

    if ( sock < 0 )
    {
        perror( "Opening CAN socket failed:" );
    }
    else
    {
        strncpy( ifr.ifr_name, can_channel, IFNAMSIZ );

        valid = ioctl( sock, SIOCGIFINDEX, &ifr );

        if ( valid < 0 )
        {
            perror( "Finding CAN index failed:" );
        }
    }

    //If a timeout has been specified set one here since it should be set before
    //the bind call
    if( valid >= 0 && tv != NULL )
    {
        valid = setsockopt( sock,
                            SOL_SOCKET,
                            SO_RCVTIMEO,
                            tv,
                            sizeof( struct timeval ) );

        if ( valid < 0 )
        {
            perror( "Setting timeout failed:" );
        }
    }

    if ( valid >= 0 )
    {
        struct sockaddr_can can_address;

        memset( &can_address, 0, sizeof( can_address ) );
        can_address.can_family = AF_CAN;
        can_address.can_ifindex = ifr.ifr_ifindex;

        valid = bind( sock,
                      (struct sockaddr *) &can_address,
                      sizeof( can_address ) );