all: Handle errors opening db/creating file-set (ref #5907) (#7150)

lib/util/utils.go

@@ -8,6 +8,7 @@ package util
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net"
 	"net/url"
@@ -262,6 +263,19 @@ type FatalErr struct {
 	Status ExitStatus
 }
 
+// AsFatalErr wraps the given error creating a FatalErr. If the given error
+// already is of type FatalErr, it is not wrapped again.
+func AsFatalErr(err error, status ExitStatus) *FatalErr {
+	var ferr *FatalErr
+	if errors.As(err, &ferr) {
+		return ferr
+	}
+	return &FatalErr{
+		Err:    err,
+		Status: status,
+	}
+}
+
 func (e *FatalErr) Error() string {
 	return e.Err.Error()
 }