wg-quicker/vendor/golang.zx2c4.com/wireguard/wgctrl/os_linux.go

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//+build linux
package wgctrl
import (
"golang.zx2c4.com/wireguard/wgctrl/internal/wginternal"
"golang.zx2c4.com/wireguard/wgctrl/internal/wglinux"
"golang.zx2c4.com/wireguard/wgctrl/internal/wguser"
)
// newClients configures wginternal.Clients for Linux systems.
func newClients() ([]wginternal.Client, error) {
var clients []wginternal.Client
// Linux has an in-kernel WireGuard implementation. Determine if it is
// available and make use of it if so.
kc, ok, err := wglinux.New()
if err != nil {
return nil, err
}
if ok {
clients = append(clients, kc)
}
// Although it isn't recommended to use userspace implementations on Linux,
// it can be used. We make use of it in integration tests as well.
uc, err := wguser.New()
if err != nil {
return nil, err
}
// Kernel devices seem to appear first in wg(8).
clients = append(clients, uc)
return clients, nil
}