109 lines
2.7 KiB
Go
109 lines
2.7 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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"os/exec"
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"syscall"
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"github.com/containerd/containerd/v2/pkg/oci"
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"github.com/sirupsen/logrus"
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)
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const (
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failpointProfileKey = "oci.runc.failpoint.profile"
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)
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type invoker func(context.Context) error
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type invokerInterceptor func(context.Context, invoker) error
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var (
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failpointProfiles = map[string]invokerInterceptor{
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"issue9103": issue9103KillInitAfterCreate,
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}
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)
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// setupLog setups messages into log file.
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func setupLog() {
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// containerd/go-runc always add --log option
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idx := 2
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for ; idx < len(os.Args); idx++ {
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if os.Args[idx] == "--log" {
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break
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}
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}
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if idx >= len(os.Args)-1 || os.Args[idx] != "--log" {
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panic("option --log required")
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}
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logFile := os.Args[idx+1]
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f, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND|os.O_SYNC, 0o644)
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if err != nil {
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panic(fmt.Errorf("failed to open %s: %w", logFile, err))
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}
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logrus.SetOutput(f)
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logrus.SetFormatter(new(logrus.JSONFormatter))
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}
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func main() {
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setupLog()
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fpProfile, err := failpointProfileFromOCIAnnotation()
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if err != nil {
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logrus.WithError(err).Fatal("failed to get failpoint profile")
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}
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ctx := context.Background()
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if err := fpProfile(ctx, defaultRuncInvoker); err != nil {
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logrus.WithError(err).Fatal("failed to exec failpoint profile")
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}
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}
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// defaultRuncInvoker is to call the runc command with same arguments.
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func defaultRuncInvoker(ctx context.Context) error {
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cmd := exec.CommandContext(ctx, "runc", os.Args[1:]...)
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cmd.SysProcAttr = &syscall.SysProcAttr{Pdeathsig: syscall.SIGKILL}
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return cmd.Run()
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}
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// failpointProfileFromOCIAnnotation gets the profile from OCI annotations.
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func failpointProfileFromOCIAnnotation() (invokerInterceptor, error) {
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spec, err := oci.ReadSpec(oci.ConfigFilename)
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if err != nil {
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return nil, fmt.Errorf("failed to read %s: %w", oci.ConfigFilename, err)
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}
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profileName, ok := spec.Annotations[failpointProfileKey]
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if !ok {
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return nil, fmt.Errorf("failpoint profile is required")
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}
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fp, ok := failpointProfiles[profileName]
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if !ok {
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return nil, fmt.Errorf("no such failpoint profile %s", profileName)
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}
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return fp, nil
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}
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