62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
/*
|
|
Copyright The containerd Authors.
|
|
|
|
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.
|
|
*/
|
|
|
|
package commands
|
|
|
|
import (
|
|
gocontext "context"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
|
|
"github.com/containerd/containerd"
|
|
"github.com/containerd/containerd/errdefs"
|
|
"github.com/containerd/log"
|
|
)
|
|
|
|
type killer interface {
|
|
Kill(gocontext.Context, syscall.Signal, ...containerd.KillOpts) error
|
|
}
|
|
|
|
// ForwardAllSignals forwards signals
|
|
func ForwardAllSignals(ctx gocontext.Context, task killer) chan os.Signal {
|
|
sigc := make(chan os.Signal, 128)
|
|
signal.Notify(sigc)
|
|
go func() {
|
|
for s := range sigc {
|
|
if canIgnoreSignal(s) {
|
|
log.L.Debugf("Ignoring signal %s", s)
|
|
continue
|
|
}
|
|
log.L.Debug("forwarding signal ", s)
|
|
if err := task.Kill(ctx, s.(syscall.Signal)); err != nil {
|
|
if errdefs.IsNotFound(err) {
|
|
log.L.WithError(err).Debugf("Not forwarding signal %s", s)
|
|
return
|
|
}
|
|
log.L.WithError(err).Errorf("forward signal %s", s)
|
|
}
|
|
}
|
|
}()
|
|
return sigc
|
|
}
|
|
|
|
// StopCatch stops and closes a channel
|
|
func StopCatch(sigc chan os.Signal) {
|
|
signal.Stop(sigc)
|
|
close(sigc)
|
|
}
|