set_sys: Implement GetFirmwareVersion(2) for libnx hosversion

Uses the synthesized system archive 9 (SystemVersion) and reports v5.1.0-0.0

3 files changed, 63 insertions, 1 deletions

diff --git a/src/core/file_sys/system_archive/system_archive.cpp b/src/core/file_sys/system_archive/system_archive.cpp
index e3e79f40a..c9722ed77 100644
--- a/src/core/file_sys/system_archive/system_archive.cpp
+++ b/src/core/file_sys/system_archive/system_archive.cpp
@@ -6,6 +6,7 @@
 #include "core/file_sys/romfs.h"
 #include "core/file_sys/system_archive/ng_word.h"
 #include "core/file_sys/system_archive/system_archive.h"
+#include "core/file_sys/system_archive/system_version.h"
 
 namespace FileSys::SystemArchive {
 
@@ -30,7 +31,7 @@ constexpr std::array<SystemArchiveDescriptor, SYSTEM_ARCHIVE_COUNT> SYSTEM_ARCHI
     {0x0100000000000806, "NgWord", &NgWord1},
     {0x0100000000000807, "SsidList", nullptr},
     {0x0100000000000808, "Dictionary", nullptr},
-    {0x0100000000000809, "SystemVersion", nullptr},
+    {0x0100000000000809, "SystemVersion", &SystemVersion},
     {0x010000000000080A, "AvatarImage", nullptr},
     {0x010000000000080B, "LocalNews", nullptr},
     {0x010000000000080C, "Eula", nullptr},
diff --git a/src/core/file_sys/system_archive/system_version.cpp b/src/core/file_sys/system_archive/system_version.cpp
new file mode 100644
index 000000000..3fc5f9586
--- /dev/null
+++ b/src/core/file_sys/system_archive/system_version.cpp
@@ -0,0 +1,48 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/file_sys/system_archive/system_version.h"
+#include "core/file_sys/vfs_vector.h"
+
+namespace FileSys::SystemArchive {
+
+namespace SystemVersionData {
+
+// This section should reflect the best system version to describe yuzu's HLE api.
+// TODO(DarkLordZach): Update when HLE gets better.
+
+constexpr u8 VERSION_MAJOR = 5;
+constexpr u8 VERSION_MINOR = 1;
+constexpr u8 VERSION_MICRO = 0;
+
+constexpr u8 REVISION_MAJOR = 0;
+constexpr u8 REVISION_MINOR = 0;
+
+constexpr char PLATFORM_STRING[] = "YUZU";
+constexpr char VERSION_HASH[] = "";
+constexpr char DISPLAY_VERSION[] = "5.1.0";
+constexpr char DISPLAY_TITLE[] = "YuzuEmulated Firmware for NX 5.1.0-0.0";
+
+} // namespace SystemVersionData
+
+VirtualDir SystemVersion() {
+    VirtualFile file = std::make_shared<VectorVfsFile>(std::vector<u8>(0x100), "file");
+    file->WriteObject(SystemVersionData::VERSION_MAJOR, 0);
+    file->WriteObject(SystemVersionData::VERSION_MINOR, 1);
+    file->WriteObject(SystemVersionData::VERSION_MICRO, 2);
+    file->WriteObject(SystemVersionData::REVISION_MAJOR, 4);
+    file->WriteObject(SystemVersionData::REVISION_MINOR, 5);
+    file->WriteArray(SystemVersionData::PLATFORM_STRING,
+                     std::min(sizeof(SystemVersionData::PLATFORM_STRING), 0x20ull), 0x8);
+    file->WriteArray(SystemVersionData::VERSION_HASH,
+                     std::min(sizeof(SystemVersionData::VERSION_HASH), 0x40ull), 0x28);
+    file->WriteArray(SystemVersionData::DISPLAY_VERSION,
+                     std::min(sizeof(SystemVersionData::DISPLAY_VERSION), 0x18ull), 0x68);
+    file->WriteArray(SystemVersionData::DISPLAY_TITLE,
+                     std::min(sizeof(SystemVersionData::DISPLAY_TITLE), 0x80ull), 0x80);
+    return std::make_shared<VectorVfsDirectory>(std::vector<VirtualFile>{file},
+                                                std::vector<VirtualDir>{}, "data");
+}
+
+} // namespace FileSys::SystemArchive
diff --git a/src/core/file_sys/system_archive/system_version.h b/src/core/file_sys/system_archive/system_version.h
new file mode 100644
index 000000000..9fb794b36
--- /dev/null
+++ b/src/core/file_sys/system_archive/system_version.h
@@ -0,0 +1,13 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/file_sys/vfs_types.h"
+
+namespace FileSys::SystemArchive {
+
+VirtualDir SystemVersion();
+
+} // namespace FileSys::SystemArchive