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utils.go
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/
utils.go
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package main
import (
"fmt"
"os"
"github.com/Sirupsen/logrus"
"github.com/opencontainers/runtime-spec/specs-go"
"github.com/urfave/cli"
)
// fatal prints the error's details if it is a libcontainer specific error type
// then exits the program with an exit status of 1.
func fatal(err error) {
// make sure the error is written to the logger
logrus.Error(err)
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// setupSpec performs inital setup based on the cli.Context for the container
func setupSpec(context *cli.Context) (*specs.Spec, error) {
bundle := context.String("bundle")
if bundle != "" {
if err := os.Chdir(bundle); err != nil {
return nil, err
}
}
spec, err := loadSpec(specConfig)
if err != nil {
return nil, err
}
notifySocket := os.Getenv("NOTIFY_SOCKET")
if notifySocket != "" {
setupSdNotify(spec, notifySocket)
}
if os.Geteuid() != 0 {
return nil, fmt.Errorf("runc should be run as root")
}
return spec, nil
}