--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libmlk-core/core/vfs.h	Wed Oct 13 15:03:18 2021 +0200
@@ -0,0 +1,66 @@
+/*
+ * vfs.h -- virtual file system abstraction
+ *
+ * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef MLK_CORE_VFS_H
+#define MLK_CORE_VFS_H
+
+#include "core.h"
+
+struct vfs_file;
+
+struct vfs {
+	void *data;
+	int (*open)(struct vfs *, struct vfs_file *, const char *, const char *);
+	void (*finish)(struct vfs *);
+};
+
+struct vfs_file {
+	void *data;
+	size_t (*read)(struct vfs_file *, void *, size_t);
+	size_t (*write)(struct vfs_file *, const void *, size_t);
+	int (*flush)(struct vfs_file *);
+	void (*finish)(struct vfs_file *);
+};
+
+CORE_BEGIN_DECLS
+
+/* vfs */
+
+int
+vfs_open(struct vfs *, struct vfs_file *, const char *, const char *);
+
+void
+vfs_finish(struct vfs *);
+
+/* vfs_file */
+
+size_t
+vfs_file_read(struct vfs_file *, void *, size_t);
+
+size_t
+vfs_file_write(struct vfs_file *, void *, size_t);
+
+int
+vfs_file_flush(struct vfs_file *);
+
+void
+vfs_file_finish(struct vfs_file *);
+
+CORE_END_DECLS
+
+#endif /* MLK_CORE_VFS_H */