nomad-driver-nix2/executor/libcontainer_nsenter_linux.go

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package executor
import (
"os"
"runtime"
hclog "github.com/hashicorp/go-hclog"
"github.com/opencontainers/runc/libcontainer"
_ "github.com/opencontainers/runc/libcontainer/nsenter"
)
// init is only run on linux and is used when the LibcontainerExecutor starts
// a new process. The libcontainer shim takes over the process, setting up the
// configured isolation and limitions before execve into the user process
//
// This subcommand handler is implemented as an `init`, libcontainer shim is handled anywhere
// this package is used (including tests) without needing to write special command handler.
func init() {
if len(os.Args) > 1 && os.Args[1] == "libcontainer-shim" {
runtime.GOMAXPROCS(1)
runtime.LockOSThread()
factory, _ := libcontainer.New("")
if err := factory.StartInitialization(); err != nil {
hclog.L().Error("failed to initialize libcontainer-shim", "error", err)
os.Exit(1)
}
panic("--this line should have never been executed, congratulations--")
}
}