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package etchosts
import (
"fmt"
"github.com/containers/common/pkg/config"
securejoin "github.com/cyphar/filepath-securejoin"
)
// GetBaseHostFile return the hosts file which should be used as base.
// The first param should be the config value config.Containers.BaseHostsFile
// The second param should be the root path to the mounted image. This is
// required when the user conf value is set to "image".
func GetBaseHostFile(confValue, imageRoot string) (string, error) {
switch confValue {
case "":
return config.DefaultHostsFile, nil
case "none":
return "", nil
case "image":
// use secure join to prevent problems with symlinks
path, err := securejoin.SecureJoin(imageRoot, config.DefaultHostsFile)
if err != nil {
return "", fmt.Errorf("failed to get /etc/hosts path in image: %w", err)
}
return path, nil
default:
return confValue, nil
}
}
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