Save file update (incomplete)

src/dusklinux/save/savelinux.h

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "error/error.h"
+#include "save/savefile.h"
+
+#define SAVE_LINUX_PATH_MAX FILENAME_MAX
+#define SAVE_LINUX_FILE_FORMAT "%s/save_%u.dat"
+
+#ifndef SAVE_LINUX_PATH
+  #define SAVE_LINUX_PATH "./saves"
+#endif
+
+typedef struct {
+  char_t savePath[SAVE_LINUX_PATH_MAX];
+} savelinux_t;
+
+/**
+ * Initializes the save system on Linux.
+ *
+ * @return An error code if initialization fails.
+ */
+errorret_t saveInitLinux(void);
+
+/**
+ * Disposes of the save system on Linux.
+ *
+ * @return An error code if disposal fails.
+ */
+errorret_t saveDisposeLinux(void);
+
+/**
+ * Loads a save file from disk for the given slot.
+ *
+ * @param slot The save slot index.
+ * @param file Output save file data.
+ * @return An error code if the load fails.
+ */
+errorret_t saveLoadLinux(const uint8_t slot, savefile_t *file);
+
+/**
+ * Writes a save file to disk for the given slot.
+ *
+ * @param slot The save slot index.
+ * @param file Save file data to write.
+ * @return An error code if the write fails.
+ */
+errorret_t saveWriteLinux(const uint8_t slot, const savefile_t *file);
+
+/**
+ * Deletes the save file for the given slot from disk.
+ *
+ * @param slot The save slot index.
+ * @return An error code if the delete fails.
+ */
+errorret_t saveDeleteLinux(const uint8_t slot);