small refactor*

server/pkg/go-nfs/nfs_onpathconf.go

@@ -0,0 +1,55 @@
+package nfs
+
+import (
+	"bytes"
+	"context"
+
+	"github.com/willscott/go-nfs-client/nfs/xdr"
+)
+
+// PathNameMax is the maximum length for a file name
+const PathNameMax = 255
+
+func onPathConf(ctx context.Context, w *response, userHandle Handler) error {
+	roothandle, err := xdr.ReadOpaque(w.req.Body)
+	if err != nil {
+		return &NFSStatusError{NFSStatusInval, err}
+	}
+	fs, path, err := userHandle.FromHandle(ctx, roothandle)
+	if err != nil {
+		return &NFSStatusError{NFSStatusStale, err}
+	}
+
+	writer := bytes.NewBuffer([]byte{})
+	if err := xdr.Write(writer, uint32(NFSStatusOk)); err != nil {
+		return &NFSStatusError{NFSStatusServerFault, err}
+	}
+	if err := WritePostOpAttrs(writer, tryStat(ctx, fs, path)); err != nil {
+		return &NFSStatusError{NFSStatusServerFault, err}
+	}
+
+	type PathConf struct {
+		LinkMax         uint32
+		NameMax         uint32
+		NoTrunc         uint32
+		ChownRestricted uint32
+		CaseInsensitive uint32
+		CasePreserving  uint32
+	}
+
+	defaults := PathConf{
+		LinkMax:         1,
+		NameMax:         PathNameMax,
+		NoTrunc:         1,
+		ChownRestricted: 0,
+		CaseInsensitive: 0,
+		CasePreserving:  1,
+	}
+	if err := xdr.Write(writer, defaults); err != nil {
+		return &NFSStatusError{NFSStatusServerFault, err}
+	}
+	if err := w.Write(writer.Bytes()); err != nil {
+		return &NFSStatusError{NFSStatusServerFault, err}
+	}
+	return nil
+}