cephfs: replace cephfsError by cephError

Signed-off-by: Niels de Vos <[email protected]>

cephfs/errors.go

@@ -11,23 +11,8 @@ import (
 	"github.com/ceph/go-ceph/internal/errutil"
 )
 
-// cephFSError represents an error condition returned from the CephFS APIs.
-type cephFSError int
-
-// Error returns the error string for the cephFSError type.
-func (e cephFSError) Error() string {
-	return errutil.FormatErrorCode("cephfs", int(e))
-}
-
-func (e cephFSError) ErrorCode() int {
-	return int(e)
-}
-
 func getError(e C.int) error {
-	if e == 0 {
-		return nil
-	}
-	return cephFSError(e)
+	return errutil.GetError("cephfs", int(e))
 }
 
 // getErrorIfNegative converts a ceph return code to error if negative.
@@ -46,22 +31,16 @@ var (
 	// ErrEmptyArgument may be returned if a function argument is passed
 	// a zero-length slice or map.
 	ErrEmptyArgument = errors.New("Argument must contain at least one item")
-)
 
-// Public CephFSErrors:
-
-const (
 	// ErrNotConnected may be returned when client is not connected
 	// to a cluster.
-	ErrNotConnected = cephFSError(-C.ENOTCONN)
+	ErrNotConnected = getError(-C.ENOTCONN)
 	// ErrNotExist indicates a non-specific missing resource.
-	ErrNotExist = cephFSError(-C.ENOENT)
-)
+	ErrNotExist = getError(-C.ENOENT)
 
-// Private errors:
+	// Private errors:
 
-const (
-	errInvalid     = cephFSError(-C.EINVAL)
-	errNameTooLong = cephFSError(-C.ENAMETOOLONG)
-	errRange       = cephFSError(-C.ERANGE)
+	errInvalid     = getError(-C.EINVAL)
+	errNameTooLong = getError(-C.ENAMETOOLONG)
+	errRange       = getError(-C.ERANGE)
 )