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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" {
// This is the golang entry point for runc init, executed
// before main() but after libcontainer/nsenter's nsexec().
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 {
// as the error is sent back to the parent there is no need to log
// or write it to stderr because the parent process will handle this
os.Exit(1)
}
panic("libcontainer: container init failed to exec")
}
}
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