summaryrefslogtreecommitdiff
path: root/libpod/network/util/interfaces.go
blob: dc2bd601db78714d48e0852caa977bfb2ccde66d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
package util

import "net"

// GetLiveNetworkSubnets returns a slice of subnets representing what the system
// has defined as network interfaces
func GetLiveNetworkSubnets() ([]*net.IPNet, error) {
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		return nil, err
	}
	nets := make([]*net.IPNet, 0, len(addrs))
	for _, address := range addrs {
		_, n, err := net.ParseCIDR(address.String())
		if err != nil {
			return nil, err
		}
		nets = append(nets, n)
	}
	return nets, nil
}

// GetLiveNetworkNames returns a list of network interface names on the system
func GetLiveNetworkNames() ([]string, error) {
	liveInterfaces, err := net.Interfaces()
	if err != nil {
		return nil, err
	}
	interfaceNames := make([]string, 0, len(liveInterfaces))
	for _, i := range liveInterfaces {
		interfaceNames = append(interfaceNames, i.Name)
	}
	return interfaceNames, nil
}