From eeaa2c212b7150648d2c629c8fe3280c73e269a5 Mon Sep 17 00:00:00 2001
From: Dominik Csapak <d.csapak@proxmox.com>
Date: Thu, 18 Jun 2020 13:55:28 +0200
Subject: [PATCH] impl Sync for DataBlobReader

this is safe for the reason explained in the comment

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 src/backup/data_blob_reader.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/backup/data_blob_reader.rs b/src/backup/data_blob_reader.rs
index 62caa5ce..d6fc7865 100644
--- a/src/backup/data_blob_reader.rs
+++ b/src/backup/data_blob_reader.rs
@@ -19,6 +19,10 @@ pub struct DataBlobReader<R: Read> {
     state: BlobReaderState<R>,
 }
 
+// zstd_safe::DCtx is not sync but we are, since
+// the only public interface is on mutable reference
+unsafe impl<R: Read> Sync for DataBlobReader<R> {}
+
 impl <R: Read> DataBlobReader<R> {
 
     pub fn new(mut reader: R, config: Option<Arc<CryptConfig>>) -> Result<Self, Error> {