VFS mountpoint backing device system

kernel/fs/tarfs.h

@@ -0,0 +1,42 @@
+#ifndef _KERNEL_FS_TARFS_H
+#define _KERNEL_FS_TARFS_H
+
+#include <device/device.h>
+#include <libk/std.h>
+#include <m/fs_desc_buffer.h>
+
+struct tar_header {
+  char filename[100];
+  uint8_t mode[8];
+  uint8_t uid[8];
+  uint8_t gid[8];
+  uint8_t size[12];
+  uint8_t mtime[12];
+  uint8_t checksum[8];
+  uint8_t type_flag;
+} PACKED;
+
+struct tar_file {
+  struct tar_header* header;
+  uint8_t* content;
+  size_t size;
+};
+
+#define TARFS_FILES_MAX 128
+
+struct tarfs {
+  struct tar_file tarfs_files[TARFS_FILES_MAX];
+  uint8_t* buffer;
+};
+
+struct vfs_mountpoint;
+
+int tarfs_mount (struct vfs_mountpoint* mountpoint, struct device_op_ctx* op_ctx);
+
+int tarfs_describe (struct vfs_mountpoint* mountpoint, const char* path,
+                    struct fs_desc_buffer* desc);
+
+int tarfs_read (struct vfs_mountpoint* mountpoint, const char* path, uint8_t* buffer, size_t off,
+                size_t size);
+
+#endif // _KERNEL_FS_TARFS_H