Integrate LZ4 library, compress the ramdisk

kernel/device/device.c

@@ -13,6 +13,8 @@
 #include <libk/std.h>
 #include <libk/string.h>
 #include <limine/requests.h>
+#include <lz4/lz4.h>
+#include <lz4/lz4frame.h>
 #include <mm/liballoc.h>
 #include <status.h>
 #include <sync/spin_lock.h>
@@ -102,7 +104,7 @@ void ramdisk_device_init (void) {
 
   struct limine_module_response* module = limine_module_request.response;
 
-  const char* ramdisk_path = "/boot/mop3dist.tar";
+  const char* ramdisk_path = "/boot/mop3dist.tar.lz4";
   struct limine_file* file = NULL;
 
   for (size_t i = 0; i < module->module_count; i++) {
@@ -112,12 +114,26 @@ void ramdisk_device_init (void) {
       break;
   }
 
+  const size_t unpack_buffer_size = 1024 * 1024 * 20;
+  uint8_t* unpack_buffer = malloc (unpack_buffer_size);
+
+  LZ4F_decompressionContext_t dctx;
+
+  LZ4F_createDecompressionContext (&dctx, LZ4F_VERSION);
+
+  size_t consumed = file->size;
+  size_t produced = unpack_buffer_size;
+
+  LZ4F_decompress (dctx, unpack_buffer, &produced, file->address, &consumed, NULL);
+
   struct ramdrv_init init = {
-      .total_size = file->size,
+      .total_size = produced,
       .sector_size = 512,
-      .buffer = file->address,
+      .buffer = unpack_buffer,
   };
   device_create ("RD", ops, lengthof (ops), &ramdrv_init, &ramdrv_fini, &init);
+
+  LZ4F_freeDecompressionContext (dctx);
 }
 
 void temp_device_init (void) {