update type assertion to prevent panic (#50)

Signed-off-by: Brian Downs <[email protected]>

pkg/config/config.go

@@ -50,11 +50,9 @@ func Parse(path string, result interface{}) error {
 	}
 
 	f, err := os.Open(path)
-
 	if err != nil {
 		return err
 	}
-
 	defer f.Close()
 
 	file := filepath.Base(path)

pkg/config/config_unix.go

@@ -3,13 +3,18 @@
 package config
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"syscall"
 )
 
 func pathOwnedByRoot(fi os.FileInfo, path string) error {
-	if fi.Sys().(*syscall.Stat_t).Uid != 0 || fi.Sys().(*syscall.Stat_t).Gid != 0 {
+	stat, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return errors.New("failed type assertion for *syscall.Stat_t")
+	}
+	if stat.Uid != 0 || stat.Gid != 0 {
 		return fmt.Errorf("file %s had was not owned by root:root", path)
 	}
 	return nil

pkg/image/util.go

@@ -67,7 +67,6 @@ func NewUtility(imagesDir, imageCredentialProviderConfig, imageCredentialProvide
 }
 
 func (u *Utility) Stage(destDir string, imgString string) error {
-
 	if err := os.MkdirAll(destDir, 0755); err != nil {
 		return err
 	}

pkg/prober/prober.go

@@ -59,7 +59,6 @@ func DoProbe(probe Probe, probeStatus *ProbeStatus, initial bool) error {
 		}
 
 		caCertPool, err := x509.SystemCertPool()
-
 		if err != nil {
 			caCertPool = x509.NewCertPool()
 			logrus.Errorf("error loading system cert pool: %v", err)