From 7c911bf2d6ddeadfb79a87bd1cb304bc58dd446e Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Sat, 18 Aug 2018 19:05:32 +0100
Subject: [PATCH] b2: fix app key support on upload to a bucket - fixes #2428

---
 backend/b2/b2.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backend/b2/b2.go b/backend/b2/b2.go
index 4502aac8b..1908fca25 100644
--- a/backend/b2/b2.go
+++ b/backend/b2/b2.go
@@ -318,6 +318,11 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to authorize account")
 	}
+	// If this is a key limited to a single bucket, it must exist already
+	if f.bucket != "" && f.info.Allowed.BucketID != "" {
+		f.markBucketOK()
+		f.setBucketID(f.info.Allowed.BucketID)
+	}
 	if f.root != "" {
 		f.root += "/"
 		// Check to see if the (bucket,directory) is actually an existing file