mirror of
https://github.com/clearlinux/rkt.git
synced 2026-09-01 11:26:05 +00:00
Jonathan Boulle
72395d1ffa
Take two at getting the spec vendored into Rocket with Godep. Since actool is used during the construction of the stage1.aci, it really needs to be vendored too to prevent any unexpected divergence between whatever version the user happens to have in their PATH. Thus, we introduce a silly dummy package (stage1/dummy.go) to coerce Godep into vendoring actool. This also requires a slight rearrangement of the appc repo, moving some functionality from actool itself into the aci package.
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// Copyright 2014 CoreOS, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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//+build linux
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package stage0
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import (
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"fmt"
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"os"
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"path/filepath"
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"syscall"
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"github.com/coreos/rocket/Godeps/_workspace/src/github.com/appc/spec/schema/types"
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"github.com/coreos/rocket/common"
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)
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// Enter enters the container by exec()ing the stage1's /enter similar to /init
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// /enter can expect to have its CWD set to the container root
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// imageID and command are supplied to /enter on argv followed by any arguments
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func Enter(cdir string, imageID *types.Hash, cmdline []string) error {
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if err := os.Chdir(cdir); err != nil {
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return fmt.Errorf("error changing to dir: %v", err)
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}
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id := types.ShortHash(imageID.String())
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ep, err := getStage1Entrypoint(cdir, enterEntrypoint)
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if err != nil {
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return fmt.Errorf("error determining entrypoint: %v", err)
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}
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argv := []string{filepath.Join(common.Stage1RootfsPath(cdir), ep)}
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argv = append(argv, id)
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argv = append(argv, cmdline...)
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if err := syscall.Exec(argv[0], argv, os.Environ()); err != nil {
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return fmt.Errorf("error execing enter: %v", err)
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}
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// never reached
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return nil
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}
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