rootless: call IsRootless just once
we are calling this function several times, it is worth to store its
result and re-use it.
@@ -12,6 +12,7 @@ import (
"runtime"
"strconv"
"strings"
+ "sync"
"syscall"
"unsafe"
@@ -33,9 +34,17 @@ func runInUser() error {
return nil
}
+var (
+ isRootlessOnce sync.Once
+ isRootless bool
+)
+
// IsRootless tells us if we are running in rootless mode
func IsRootless() bool {
- return os.Geteuid() != 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != ""
+ isRootlessOnce.Do(func() {
+ isRootless = os.Geteuid() != 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != ""
+ })
+ return isRootless
}
var (
