5.1.4. ioctl NET_GET_IF¶

5.1.4.1. Name¶

NET_GET_IF - Read the configuration data of an interface created via - NET_ADD_IF.

5.1.4.2. Synopsis¶

NET_GET_IF¶

int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)

5.1.4.3. Arguments¶

fd: File descriptor returned by open().
net_if: pointer to struct dvb_net_if

5.1.4.4. Description¶

The NET_GET_IF ioctl uses the interface number given by the struct dvb_net_if::ifnum field and fills the content of struct dvb_net_if with the packet ID and encapsulation type used on such interface. If the interface was not created yet with NET_ADD_IF, it will return -1 and fill the errno with EINVAL error code.

5.1.4.5. Return Value¶

On success 0 is returned, and ca_slot_info is filled.

On error -1 is returned, and the errno variable is set appropriately.

The generic error codes are described at the Generic Error Codes chapter.