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eacce1d52e
Previously we would sneakily remount as `rw` but of course you can't really do that on a truly immutable filesystem. See https://github.com/moby/tool/pull/129 for the `moby` side. Signed-off-by: Justin Cormack <justin.cormack@docker.com>
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package main
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import (
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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const (
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runcBinary = "/usr/bin/runc"
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onbootPath = "/containers/onboot"
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shutdownPath = "/containers/onshutdown"
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)
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func main() {
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// try to work out how we are being called
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command := os.Args[0]
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if len(os.Args) > 1 {
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command = os.Args[1]
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}
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var path = onbootPath
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switch {
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case strings.Contains(command, "boot"):
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path = onbootPath
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case strings.Contains(command, "shutdown"):
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path = shutdownPath
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}
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// do nothing if the path does not exist
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if _, err := os.Stat(path); err != nil && os.IsNotExist(err) {
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os.Exit(0)
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}
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// get files; note ReadDir already sorts them
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files, err := ioutil.ReadDir(path)
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if err != nil {
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log.Fatalf("Cannot read files in %s: %v", path, err)
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}
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status := 0
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for _, file := range files {
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name := file.Name()
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fullPath := filepath.Join(path, name)
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if err := prepare(fullPath); err != nil {
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log.Printf("Error preparing %s: %v", name, err)
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status = 1
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continue
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}
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cmd := exec.Command(runcBinary, "run", "--bundle", fullPath, name)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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log.Printf("Error running %s: %v", name, err)
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status = 1
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} else {
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// do not clean up on error to make debug easier
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cleanup(fullPath)
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}
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}
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os.Exit(status)
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}
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