swarm/fuse: return amount of data written if the file exists (ethereum#15261)

dherbst · fjl · commit 89860f4197cb · 2017-10-09T12:45:30.000+02:00
If the file already existed, the WriteResponse.Size was being set as the length of the entire file, not just the amount that was written to the existing file. Fixes ethereum#15216
diff --git a/swarm/fuse/fuse_file.go b/swarm/fuse/fuse_file.go
@@ -134,7 +134,7 @@ func (sf *SwarmFile) Write(ctx context.Context, req *fuse.WriteRequest, resp *fu
 		if err != nil {
 			return err
 		}
-		resp.Size = int(sf.fileSize)
+		resp.Size = len(req.Data)
 	} else {
 		log.Warn("Invalid write request size(%v) : off(%v)", sf.fileSize, req.Offset)
 		return errInvalidOffset

Original file line number	Diff line number	Diff line change
`@@ -134,7 +134,7 @@ func (sf SwarmFile) Write(ctx context.Context, req fuse.WriteRequest, resp *fu`
`134`	`134`	`if err != nil {`
`135`	`135`	`return err`
`136`	`136`	`}`
`137`		`- resp.Size = int(sf.fileSize)`
	`137`	`+ resp.Size = len(req.Data)`
`138`	`138`	`} else {`
`139`	`139`	`log.Warn("Invalid write request size(%v) : off(%v)", sf.fileSize, req.Offset)`
`140`	`140`	`return errInvalidOffset`