1 files changed, 12 insertions, 1 deletions
diff --git a/src/util.h b/src/util.h
index 6687b865d2..c7d1600b4e 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2016 The Bitcoin Core developers
+// Copyright (c) 2009-2017 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -134,6 +134,10 @@ template<typename T, typename... Args> static inline void MarkUsed(const T& t, c
     MarkUsed(args...);
 }
 
+// Be conservative when using LogPrintf/error or other things which
+// unconditionally log to debug.log! It should not be the case that an inbound
+// peer can fill up a users disk with debug.log entries.
+
 #ifdef USE_COVERAGE
 #define LogPrintf(...) do { MarkUsed(__VA_ARGS__); } while(0)
 #define LogPrint(category, ...) do { MarkUsed(__VA_ARGS__); } while(0)
@@ -169,6 +173,13 @@ bool TruncateFile(FILE *file, unsigned int length);
 int RaiseFileDescriptorLimit(int nMinFD);
 void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
 bool RenameOver(fs::path src, fs::path dest);
+bool LockDirectory(const fs::path& directory, const std::string lockfile_name, bool probe_only=false);
+
+/** Release all directory locks. This is used for unit testing only, at runtime
+ * the global destructor will take care of the locks.
+ */
+void ReleaseDirectoryLocks();
+
 bool TryCreateDirectories(const fs::path& p);
 fs::path GetDefaultDataDir();
 const fs::path &GetDataDir(bool fNetSpecific = true);