Filesystem/Archives: Implemented the SaveData archive

The savedata for each game is stored in /savedata/<ProgramID> for NCCH files. ELF files and 3DSX files use the folder 0 because they have no ID information

Got rid of the code duplication in File and Directory

Files that deal with the host machine's file system now live in DiskFile, similarly for directories and DiskDirectory and archives with DiskArchive.

FS_U: Use the correct error code when a file wasn't found

2 files changed, 7 insertions, 0 deletions

diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index 929422b36..6a690e915 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -14,6 +14,7 @@ namespace Kernel {
 
 Handle g_main_thread = 0;
 ObjectPool g_object_pool;
+u64 g_program_id = 0;
 
 ObjectPool::ObjectPool() {
     next_id = INITIAL_NEXT_ID;
diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h
index 7e0f15c84..7123485be 100644
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -151,6 +151,12 @@ private:
 extern ObjectPool g_object_pool;
 extern Handle g_main_thread;
 
+/// The ID code of the currently running game
+/// TODO(Subv): This variable should not be here, 
+/// we need a way to store information about the currently loaded application 
+/// for later query during runtime, maybe using the LDR service?
+extern u64 g_program_id;
+
 /// Initialize the kernel
 void Init();