62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package commands
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import (
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gocontext "context"
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"os"
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"os/signal"
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"syscall"
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containerd "github.com/containerd/containerd/v2/client"
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"github.com/containerd/containerd/v2/pkg/errdefs"
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"github.com/containerd/log"
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)
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type killer interface {
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Kill(gocontext.Context, syscall.Signal, ...containerd.KillOpts) error
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}
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// ForwardAllSignals forwards signals
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func ForwardAllSignals(ctx gocontext.Context, task killer) chan os.Signal {
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sigc := make(chan os.Signal, 128)
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signal.Notify(sigc)
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go func() {
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for s := range sigc {
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if canIgnoreSignal(s) {
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log.L.Debugf("Ignoring signal %s", s)
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continue
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}
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log.L.Debug("forwarding signal ", s)
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if err := task.Kill(ctx, s.(syscall.Signal)); err != nil {
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if errdefs.IsNotFound(err) {
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log.L.WithError(err).Debugf("Not forwarding signal %s", s)
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return
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}
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log.L.WithError(err).Errorf("forward signal %s", s)
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}
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}
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}()
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return sigc
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}
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// StopCatch stops and closes a channel
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func StopCatch(sigc chan os.Signal) {
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signal.Stop(sigc)
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close(sigc)
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}
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