small refactor*

server/pkg/go-nfs/mountinterface.go

@@ -0,0 +1,90 @@
+package nfs
+
+import (
+	"github.com/willscott/go-nfs-client/nfs/rpc"
+)
+
+// FHSize is the maximum size of a FileHandle
+const FHSize = 64
+
+// MNTNameLen is the maximum size of a mount name
+const MNTNameLen = 255
+
+// MntPathLen is the maximum size of a mount path
+const MntPathLen = 1024
+
+// FileHandle maps to a fhandle3
+type FileHandle []byte
+
+// MountStatus defines the response to the Mount Procedure
+type MountStatus uint32
+
+// MountStatus Codes
+const (
+	MountStatusOk             MountStatus = 0
+	MountStatusErrPerm        MountStatus = 1
+	MountStatusErrNoEnt       MountStatus = 2
+	MountStatusErrIO          MountStatus = 5
+	MountStatusErrAcces       MountStatus = 13
+	MountStatusErrNotDir      MountStatus = 20
+	MountStatusErrInval       MountStatus = 22
+	MountStatusErrNameTooLong MountStatus = 63
+	MountStatusErrNotSupp     MountStatus = 10004
+	MountStatusErrServerFault MountStatus = 10006
+)
+
+// MountProcedure is the valid RPC calls for the mount service.
+type MountProcedure uint32
+
+// MountProcedure Codes
+const (
+	MountProcNull MountProcedure = iota
+	MountProcMount
+	MountProcDump
+	MountProcUmnt
+	MountProcUmntAll
+	MountProcExport
+)
+
+func (m MountProcedure) String() string {
+	switch m {
+	case MountProcNull:
+		return "Null"
+	case MountProcMount:
+		return "Mount"
+	case MountProcDump:
+		return "Dump"
+	case MountProcUmnt:
+		return "Umnt"
+	case MountProcUmntAll:
+		return "UmntAll"
+	case MountProcExport:
+		return "Export"
+	default:
+		return "Unknown"
+	}
+}
+
+// AuthFlavor is a form of authentication, per rfc1057 section 7.2
+type AuthFlavor uint32
+
+// AuthFlavor Codes
+const (
+	AuthFlavorNull  AuthFlavor = 0
+	AuthFlavorUnix  AuthFlavor = 1
+	AuthFlavorShort AuthFlavor = 2
+	AuthFlavorDES   AuthFlavor = 3
+)
+
+// MountRequest contains the format of a client request to open a mount.
+type MountRequest struct {
+	rpc.Header
+	Dirpath []byte
+}
+
+// MountResponse is the server's response with status `MountStatusOk`
+type MountResponse struct {
+	rpc.Header
+	FileHandle
+	AuthFlavors []int
+}