Lely core libraries  2.2.5
if.c File Reference

This file is part of the I/O library; it contains the implementation of the network interface functions. More...

#include "io.h"
#include <lely/io/if.h>
#include <lely/io/sock.h>
#include <lely/util/errnum.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <ifaddrs.h>
Include dependency graph for if.c:

Go to the source code of this file.

Functions

int io_get_ifinfo (int maxinfo, struct io_ifinfo *info)
 Obtains a list of network interfaces. More...
 

Detailed Description

This file is part of the I/O library; it contains the implementation of the network interface functions.

See also
lely/io/if.h
Author
J. S. Seldenthuis jseld.nosp@m.enth.nosp@m.uis@l.nosp@m.ely..nosp@m.com

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Definition in file if.c.

Function Documentation

◆ io_get_ifinfo()

int io_get_ifinfo ( int  maxinfo,
struct io_ifinfo info 
)

Obtains a list of network interfaces.

Parameters
maxinfothe maximum number of io_ifinfo structs to return.
infoan array of at least maxinfo io_ifinfo structs (can be NULL). On success, *info contains at most maxinfo structures describing the network interfaces.
Returns
the total number of interfaces (which may be different from maxinfo), or -1 on error. In the latter case, the error number can be obtained with get_errc().

Definition at line 57 of file if.c.