11ffba3dc4
pkg/oci is a general utility package with dependency chains that are uneccessary for the shim. The shim only actually used it for a convenience function for reading an oci spec file. Instead of pulling in those deps just re-implement that internally in the shim command. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
63 lines
1.6 KiB
Go
63 lines
1.6 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 runc
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import (
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"context"
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"encoding/json"
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"os"
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"path/filepath"
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"github.com/containerd/log"
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"github.com/opencontainers/runtime-spec/specs-go"
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)
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// ShouldKillAllOnExit reads the bundle's OCI spec and returns true if
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// there is an error reading the spec or if the container has a private PID namespace
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func ShouldKillAllOnExit(ctx context.Context, bundlePath string) bool {
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spec, err := readSpec(bundlePath)
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if err != nil {
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log.G(ctx).WithError(err).Error("shouldKillAllOnExit: failed to read config.json")
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return true
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}
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if spec.Linux != nil {
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for _, ns := range spec.Linux.Namespaces {
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if ns.Type == specs.PIDNamespace && ns.Path == "" {
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return false
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}
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}
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}
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return true
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}
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func readSpec(p string) (*specs.Spec, error) {
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const configFileName = "config.json"
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f, err := os.Open(filepath.Join(p, configFileName))
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if err != nil {
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return nil, err
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}
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defer f.Close()
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var s specs.Spec
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if err := json.NewDecoder(f).Decode(&s); err != nil {
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return nil, err
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}
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return &s, nil
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}
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