From da431033840850b848ac1106d913a9de742e2575 Mon Sep 17 00:00:00 2001
From: Kevin Atkinson <k@kevina.org>
Date: Fri, 6 May 2016 03:58:00 -0400
Subject: [PATCH] Report an error when trying to use "--no-copy" when daemon is
 online.

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>
---
 commands/files/adv_reader.go | 11 ++++++++---
 commands/files/readerfile.go |  3 ++-
 core/coreunix/add.go         |  9 ++++++---
 3 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/commands/files/adv_reader.go b/commands/files/adv_reader.go
index a0a8aebb25ab..97ee93138851 100644
--- a/commands/files/adv_reader.go
+++ b/commands/files/adv_reader.go
@@ -1,6 +1,7 @@
 package files
 
 import (
+	"errors"
 	"io"
 )
 
@@ -9,7 +10,7 @@ import (
 type AdvReader interface {
 	io.Reader
 	ExtraInfo() ExtraInfo
-	SetExtraInfo(inf ExtraInfo)
+	SetExtraInfo(inf ExtraInfo) error
 }
 
 type ExtraInfo interface {
@@ -38,9 +39,13 @@ type advReaderAdapter struct {
 	io.Reader
 }
 
-func (advReaderAdapter) ExtraInfo() ExtraInfo { return nil }
+func (advReaderAdapter) ExtraInfo() ExtraInfo {
+	return nil
+}
 
-func (advReaderAdapter) SetExtraInfo(_ ExtraInfo) {}
+func (advReaderAdapter) SetExtraInfo(_ ExtraInfo) error {
+	return errors.New("Reader does not support setting ExtraInfo.")
+}
 
 func AdvReaderAdapter(r io.Reader) AdvReader {
 	switch t := r.(type) {
diff --git a/commands/files/readerfile.go b/commands/files/readerfile.go
index 27c5519e4942..e18423619a5b 100644
--- a/commands/files/readerfile.go
+++ b/commands/files/readerfile.go
@@ -41,8 +41,9 @@ func (f *ReaderFile) ExtraInfo() ExtraInfo {
 	return f.baseInfo.Clone(f.offset)
 }
 
-func (f *ReaderFile) SetExtraInfo(info ExtraInfo) {
+func (f *ReaderFile) SetExtraInfo(info ExtraInfo) error {
 	f.baseInfo = info
+	return nil
 }
 
 func (f *ReaderFile) Read(p []byte) (int, error) {
diff --git a/core/coreunix/add.go b/core/coreunix/add.go
index cefe7078d1cb..b288f1dbaecf 100644
--- a/core/coreunix/add.go
+++ b/core/coreunix/add.go
@@ -109,7 +109,10 @@ type Adder struct {
 // Perform the actual add & pin locally, outputting results to reader
 func (adder Adder) add(reader files.AdvReader) (*dag.Node, error) {
 	if adder.AddOpts != nil {
-		reader.SetExtraInfo(files.PosInfoWaddOpts{reader.ExtraInfo(), adder.AddOpts})
+		err := reader.SetExtraInfo(files.PosInfoWaddOpts{reader.ExtraInfo(), adder.AddOpts})
+		if err != nil {
+			return nil, err
+		}
 	}
 	chnk, err := chunk.FromString(reader, adder.Chunker)
 	if err != nil {
@@ -542,6 +545,6 @@ func (i *progressReader) ExtraInfo() files.ExtraInfo {
 	return i.reader.ExtraInfo()
 }
 
-func (i *progressReader) SetExtraInfo(info files.ExtraInfo) {
-	i.reader.SetExtraInfo(info)
+func (i *progressReader) SetExtraInfo(info files.ExtraInfo) error {
+	return i.reader.SetExtraInfo(info)
 }