39 lines
714 B
Go
39 lines
714 B
Go
package oci
|
|
|
|
import (
|
|
"context"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
const hostsContent = `
|
|
127.0.0.1 localhost
|
|
::1 localhost ip6-localhost ip6-loopback
|
|
`
|
|
|
|
func GetHostsFile(ctx context.Context, stateDir string) (string, error) {
|
|
p := filepath.Join(stateDir, "hosts")
|
|
_, err := g.Do(ctx, stateDir, func(ctx context.Context) (interface{}, error) {
|
|
_, err := os.Stat(p)
|
|
if err == nil {
|
|
return "", nil
|
|
}
|
|
if !os.IsNotExist(err) {
|
|
return "", err
|
|
}
|
|
if err := ioutil.WriteFile(p+".tmp", []byte(hostsContent), 0644); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if err := os.Rename(p+".tmp", p); err != nil {
|
|
return "", err
|
|
}
|
|
return "", nil
|
|
})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return p, nil
|
|
}
|