Included a sketch of how CloneFile() could be on Linux

1 files changed, 32 insertions, 1 deletions

diff --git a/zencore/filesystem.cpp b/zencore/filesystem.cpp
index 181b879db..25fe371c5 100644
--- a/zencore/filesystem.cpp
+++ b/zencore/filesystem.cpp
@@ -408,10 +408,41 @@ CloneFile(std::filesystem::path FromPath, std::filesystem::path ToPath)
 	const bool AllOk = (TRUE == SetFileInformationByHandle(TargetFile, FileDispositionInfo, &FileDisposition, sizeof FileDisposition));
 
 	return AllOk;
-#else
+#elif ZEN_PLATFORM_LINUX
+#	if 0
+	struct ScopedFd
+	{
+		~ScopedFd() { close(Fd); }
+		int Fd;
+	};
+
+	// The 'from' file
+	int FromFd = open(FromPath.c_str(), O_RDONLY);
+	if (FromFd < 0)
+	{
+		return false;
+	}
+	ScopedFd $From = { FromFd };
+
+	// The 'to' file
+	int ToFd = open(ToPath.c_str(), O_WRONLY|O_CREAT|O_EXCL, 0666);
+	if (ToFd < 0)
+	{
+		return false;
+	}
+	ScopedFd $To = { FromFd };
+
+	ioctl(ToFd, FICLONE, FromFd);
+
+	return false;
+#	endif // 0
 	ZEN_UNUSED(FromPath, ToPath);
 	ZEN_ERROR("CloneFile() is not implemented on this platform");
 	return false;
+#elif ZEN_PLATFORM_MAC
+	/* clonefile() syscall if APFS */
+#	error not implemented
+	return false;
 #endif	// ZEN_PLATFORM_WINDOWS
 }