From 311e6ca7b609e578c0ec132440a4ad981db70a9e Mon Sep 17 00:00:00 2001
From: xunchang <xunchang@google.com>
Date: Fri, 22 Mar 2019 08:54:35 -0700
Subject: Implement FuseBlockDataProvider

Adds a fuse data provider that parses the metadata from a block map,
reads the data from the given ranges of the block device; and provides
the data to the fuse.

Bug: 127071893
Test: unit tests pass, install a package from block map
Change-Id: Ie9925ee9144e98642505b3f5e1a4a186d2b21ed0
---
 otautil/sysutil.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'otautil/sysutil.cpp')

diff --git a/otautil/sysutil.cpp b/otautil/sysutil.cpp
index 2b4861809..420db4cac 100644
--- a/otautil/sysutil.cpp
+++ b/otautil/sysutil.cpp
@@ -94,6 +94,11 @@ BlockMapData BlockMapData::ParseBlockMapFile(const std::string& block_map_path)
     remaining_blocks -= range_blocks;
   }
 
+  if (remaining_blocks != 0) {
+    LOG(ERROR) << "Invalid ranges: remaining blocks " << remaining_blocks;
+    return {};
+  }
+
   return BlockMapData(block_dev, file_size, blksize, std::move(ranges));
 }
 
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