70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
//go:build linux
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/*
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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 main
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import (
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"context"
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"fmt"
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"os"
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"strconv"
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"strings"
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"syscall"
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"time"
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)
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// issue9103KillInitAfterCreate kills the runc.Init process after creating
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// command returns successfully.
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//
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// REF: https://github.com/containerd/containerd/issues/9103
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func issue9103KillInitAfterCreate(ctx context.Context, method invoker) error {
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isCreated := strings.Contains(strings.Join(os.Args, ","), ",create,")
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if err := method(ctx); err != nil {
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return err
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}
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if !isCreated {
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return nil
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}
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initPidPath := "init.pid"
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data, err := os.ReadFile(initPidPath)
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if err != nil {
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return fmt.Errorf("failed to read %s: %w", initPidPath, err)
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}
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pid, err := strconv.Atoi(string(data))
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if err != nil {
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return fmt.Errorf("failed to get init pid from string %s: %w", string(data), err)
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}
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if pid <= 0 {
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return fmt.Errorf("unexpected init pid %v", pid)
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}
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if err := syscall.Kill(pid, syscall.SIGKILL); err != nil {
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return fmt.Errorf("failed to kill the init pid %v: %w", pid, err)
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}
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// Ensure that the containerd-shim has received the SIGCHLD and start
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// to cleanup
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time.Sleep(3 * time.Second)
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return nil
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}
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