feat(kernel): SwapKit+kSwap variant type.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/dev/kernel/src/Swap/SwapDisk.cc b/dev/kernel/src/Swap/SwapDisk.cc
new file mode 100644
index 00000000..fbc63b2f
--- /dev/null
+++ b/dev/kernel/src/Swap/SwapDisk.cc
@@ -0,0 +1,67 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025 Amlal EL Mahrouss Labs, all rights reserved.
+
+------------------------------------------- */
+
+#include <SwapKit/SwapDisk.h>
+#include <KernelKit/FileMgr.h>
+
+namespace NeOS
+{
+	/***********************************************************************************/
+	/// @brief Write memory chunk onto disk.
+	/// @param fork_name The swap name to recognize this memory region.
+	/// @param fork_name_len length of fork name.
+	/// @param data the data packet.
+	/// @return Whether the swap was written to disk, or not.
+	/***********************************************************************************/
+	BOOL SwapDiskInterface::Write(const Char* fork_name, const SizeT fork_name_len, SWAP_DISK_HEADER* data)
+	{
+		if (!fork_name || !fork_name_len)
+			return NO;
+
+		if (*fork_name == 0)
+			return NO;
+
+		if (!data)
+			return NO;
+
+		FileStream file(kSwapPageFile, "wb");
+
+		auto ret = file.Write(fork_name, data, sizeof(SWAP_DISK_HEADER) + data->fBlobSz);
+
+		if (ret.Error())
+			return NO;
+
+		return YES;
+	}
+
+	/***********************************************************************************/
+	/// @brief Read memory chunk from disk.
+	/// @param fork_name The swap name to recognize this memory region.
+	/// @param fork_name_len length of fork name.
+	/// @param data the data packet length.
+	/// @return Whether the swap was fetched to disk, or not.
+	/***********************************************************************************/
+	SWAP_DISK_HEADER* SwapDiskInterface::Read(const Char* fork_name, const SizeT fork_name_len, const SizeT data_len)
+	{
+		if (!fork_name || !fork_name_len)
+			return nullptr;
+
+		if (*fork_name == 0)
+			return nullptr;
+
+		if (data_len > kSwapBlockMaxSize)
+			return nullptr;
+
+		if (data_len == 0)
+			return nullptr;
+
+		FileStream file(kSwapPageFile, "rb");
+
+		VoidPtr blob = file.Read(fork_name, sizeof(SWAP_DISK_HEADER) + data_len);
+
+		return reinterpret_cast<SWAP_DISK_HEADER*>(blob);
+	}
+} // namespace NeOS