2 files changed, 9 insertions, 0 deletions
diff --git a/src/util/system.cpp b/src/util/system.cpp
index 6e82de743a..3e6c2ae5d4 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -135,6 +135,14 @@ bool DirIsWritable(const fs::path& directory)
     return true;
 }
 
+bool CheckDiskSpace(const fs::path& dir, uint64_t nAdditionalBytes)
+{
+    constexpr uint64_t nMinDiskSpace = 52428800; // 50 MiB
+
+    uint64_t nFreeBytesAvailable = fs::space(dir).available;
+    return nFreeBytesAvailable >= nMinDiskSpace + nAdditionalBytes;
+}
+
 /**
  * Interpret a string argument as a boolean.
  *
diff --git a/src/util/system.h b/src/util/system.h
index 69ae11d1ed..2a2ee9bc1d 100644
--- a/src/util/system.h
+++ b/src/util/system.h
@@ -72,6 +72,7 @@ bool RenameOver(fs::path src, fs::path dest);
 bool LockDirectory(const fs::path& directory, const std::string lockfile_name, bool probe_only=false);
 void UnlockDirectory(const fs::path& directory, const std::string& lockfile_name);
 bool DirIsWritable(const fs::path& directory);
+bool CheckDiskSpace(const fs::path& dir, uint64_t nAdditionalBytes = 0);
 
 /** Release all directory locks. This is used for unit testing only, at runtime
  * the global destructor will take care of the locks.