Add exit1

_samples/main.go

@@ -2,20 +2,38 @@ package main
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/blp1526/go-udevinfo/blk"
 )
 
+func exit1(err error) {
+	fmt.Fprintf(os.Stderr, "ERR: %v\n", err)
+	os.Exit(1)
+}
+
 func main() {
 	mountpoint := "/"
 	fmt.Printf("## mountpoint\n%s\n\n", mountpoint)
 
-	devPath, _ := blk.GetDevPath("/")
+	devPath, err := blk.GetDevPath(mountpoint)
+	if err != nil {
+		exit1(err)
+	}
+
 	fmt.Printf("## devPath\n%s\n\n", devPath)
 
 	majorMinor, _ := blk.GetMajorMinor(devPath)
+	if err != nil {
+		exit1(err)
+	}
+
 	fmt.Printf("## majorMinor\n%s\n\n", majorMinor)
 
 	udevData, _ := blk.GetUdevData(majorMinor)
+	if err != nil {
+		exit1(err)
+	}
+
 	fmt.Printf("## udevData\n%s\n", udevData)
 }

blk/blk.go

@@ -40,7 +40,12 @@ func GetDevPath(mountpoint string) (string, error) {
 	for _, line := range lines {
 		fields := strings.Fields(line)
 		if fields[1] == mountpoint {
-			return fields[0], nil
+			devPath, err := filepath.EvalSymlinks(fields[0])
+			if err != nil {
+				return "", err
+			}
+
+			return devPath, nil
 		}
 	}