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init.go
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/
init.go
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package main
import (
"os"
"runtime"
"strconv"
"github.com/opencontainers/runc/libcontainer"
_ "github.com/opencontainers/runc/libcontainer/nsenter"
"github.com/sirupsen/logrus"
)
func init() {
if len(os.Args) > 1 && os.Args[1] == "init" {
runtime.GOMAXPROCS(1)
runtime.LockOSThread()
level, err := strconv.Atoi(os.Getenv("_LIBCONTAINER_LOGLEVEL"))
if err != nil {
panic(err)
}
logPipeFd, err := strconv.Atoi(os.Getenv("_LIBCONTAINER_LOGPIPE"))
if err != nil {
panic(err)
}
logrus.SetLevel(logrus.Level(level))
logrus.SetOutput(os.NewFile(uintptr(logPipeFd), "logpipe"))
logrus.SetFormatter(new(logrus.JSONFormatter))
logrus.Debug("child process in init")
factory, _ := libcontainer.New("")
if err := factory.StartInitialization(); err != nil {
os.Exit(1)
}
panic("libcontainer: container init failed to exec")
}
}