From 74b8449f582a9fedba1d677f9be5b41a8d4ba304 Mon Sep 17 00:00:00 2001
From: Greg Kaiser <gkaiser@google.com>
Date: Mon, 26 Oct 2020 06:29:14 -0700
Subject: [PATCH] Fix lseek() check

Since 'pos' is unsigned, we need to tweak the check.

Test: TreeHugger
Change-Id: I97dcb50fb86196b09b11ba725593e6c83c5586d9
---
 fs_mgr/libsnapshot/cow_reader.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs_mgr/libsnapshot/cow_reader.cpp b/fs_mgr/libsnapshot/cow_reader.cpp
index b1667e38d..5fac0ac8f 100644
--- a/fs_mgr/libsnapshot/cow_reader.cpp
+++ b/fs_mgr/libsnapshot/cow_reader.cpp
@@ -135,7 +135,7 @@ bool CowReader::ParseOps() {
         }
         auto& current_op = ops_buffer->data()[current_op_num];
         pos = lseek(fd_.get(), GetNextOpOffset(current_op), SEEK_CUR);
-        if (pos < 0) {
+        if (pos == uint64_t(-1)) {
             PLOG(ERROR) << "lseek next op failed";
             return false;
         }