From d41c1b032ea5d231e60901c87f674b09ecb8f235 Mon Sep 17 00:00:00 2001
From: Jean-Philip Desjardins <jean-philip.desjardins@polymtl.ca>
Date: Mon, 12 Aug 2024 18:10:33 -0400
Subject: [PATCH] Implement Rename in IOMAN.

---
 Source/iop/Ioman_Device.h            |  4 +++
 Source/iop/Iop_Ioman.cpp             | 37 ++++++++++++++++++++++++++++
 Source/iop/Iop_Ioman.h               |  1 +
 Source/iop/ioman/DirectoryDevice.cpp |  8 ++++++
 Source/iop/ioman/DirectoryDevice.h   |  1 +
 5 files changed, 51 insertions(+)

diff --git a/Source/iop/Ioman_Device.h b/Source/iop/Ioman_Device.h
index 89c0c8b3ee..a5f92b9bf8 100644
--- a/Source/iop/Ioman_Device.h
+++ b/Source/iop/Ioman_Device.h
@@ -39,6 +39,10 @@ namespace Iop
 				//Return false to indicate that device doesn't support GetStat.
 				return false;
 			}
+			virtual void Rename(const char*, const char*)
+			{
+				throw std::runtime_error("Renaming not supported.");
+			}
 		};
 
 		typedef std::shared_ptr<CDevice> DevicePtr;
diff --git a/Source/iop/Iop_Ioman.cpp b/Source/iop/Iop_Ioman.cpp
index 7fd0d34164..9ad7df2ef1 100644
--- a/Source/iop/Iop_Ioman.cpp
+++ b/Source/iop/Iop_Ioman.cpp
@@ -44,6 +44,7 @@ using namespace Iop;
 #define FUNCTION_CHSTAT "ChStat"
 #define FUNCTION_ADDDRV "AddDrv"
 #define FUNCTION_DELDRV "DelDrv"
+#define FUNCTION_RENAME "Rename"
 #define FUNCTION_MOUNT "Mount"
 #define FUNCTION_UMOUNT "Umount"
 #define FUNCTION_SEEK64 "Seek64"
@@ -214,6 +215,9 @@ std::string CIoman::GetFunctionName(unsigned int functionId) const
 	case 21:
 		return FUNCTION_DELDRV;
 		break;
+	case 25:
+		return FUNCTION_RENAME;
+		break;
 	case 31:
 		return FUNCTION_DEVCTL;
 		break;
@@ -530,6 +534,34 @@ uint32 CIoman::DelDrv(uint32 drvNamePtr)
 	return -1;
 }
 
+int32 CIoman::Rename(const char* srcPath, const char* dstPath)
+{
+	CLog::GetInstance().Print(LOG_NAME, FUNCTION_RENAME "(srcPath = '%s', dstPath = '%s');\r\n",
+	                          srcPath, dstPath);
+	int32 result = -1;
+	try
+	{
+		auto srcPathInfo = SplitPath(srcPath);
+		auto dstPathInfo = SplitPath(dstPath);
+		if(srcPathInfo.deviceName != dstPathInfo.deviceName)
+		{
+			throw std::runtime_error("Renaming files across devices not supported.");
+		}
+		auto deviceIterator = m_devices.find(srcPathInfo.deviceName);
+		if(deviceIterator == m_devices.end())
+		{
+			throw std::runtime_error("Device not found.");
+		}
+		deviceIterator->second->Rename(srcPathInfo.devicePath.c_str(), dstPathInfo.devicePath.c_str());
+	}
+	catch(const std::exception& except)
+	{
+		CLog::GetInstance().Warn(LOG_NAME, "%s: Error occured while trying to rename file '%s' to '%s'\r\n",
+		                         __FUNCTION__, srcPath, dstPath, except.what());
+	}
+	return result;
+}
+
 int32 CIoman::DevCtlVirtual(CMIPS& context)
 {
 	uint32 deviceNamePtr = context.m_State.nGPR[CMIPS::A0].nV0;
@@ -1043,6 +1075,11 @@ void CIoman::Invoke(CMIPS& context, unsigned int functionId)
 		context.m_State.nGPR[CMIPS::V0].nD0 = static_cast<int32>(DelDrv(
 		    context.m_State.nGPR[CMIPS::A0].nV0));
 		break;
+	case 25:
+		context.m_State.nGPR[CMIPS::V0].nD0 = Rename(
+		    reinterpret_cast<const char*>(&m_ram[context.m_State.nGPR[CMIPS::A0].nV[0]]),
+		    reinterpret_cast<const char*>(&m_ram[context.m_State.nGPR[CMIPS::A1].nV[0]]));
+		break;
 	case 31:
 		context.m_State.nGPR[CMIPS::V0].nD0 = DevCtlVirtual(context);
 		break;
diff --git a/Source/iop/Iop_Ioman.h b/Source/iop/Iop_Ioman.h
index d40623be6b..8a22df4108 100644
--- a/Source/iop/Iop_Ioman.h
+++ b/Source/iop/Iop_Ioman.h
@@ -57,6 +57,7 @@ namespace Iop
 		uint32 GetStat(const char*, Ioman::STAT*);
 		int32 ChStat(const char*, Ioman::STAT*, uint32);
 		uint32 DelDrv(uint32);
+		int32 Rename(const char*, const char*);
 		int32 Mount(const char*, const char*);
 		int32 Umount(const char*);
 		uint64 Seek64(uint32, int64, uint32);
diff --git a/Source/iop/ioman/DirectoryDevice.cpp b/Source/iop/ioman/DirectoryDevice.cpp
index 6f82ff9673..333776c1c8 100644
--- a/Source/iop/ioman/DirectoryDevice.cpp
+++ b/Source/iop/ioman/DirectoryDevice.cpp
@@ -86,3 +86,11 @@ void CDirectoryDevice::MakeDirectory(const char* devicePath)
 		throw std::runtime_error("Failed to create directory.");
 	}
 }
+
+void CDirectoryDevice::Rename(const char* srcDevicePath, const char* dstDevicePath)
+{
+	auto basePath = GetBasePath();
+	auto srcPath = Iop::PathUtils::MakeHostPath(basePath, srcDevicePath);
+	auto dstPath = Iop::PathUtils::MakeHostPath(basePath, dstDevicePath);
+	fs::rename(srcPath, dstPath);
+}
diff --git a/Source/iop/ioman/DirectoryDevice.h b/Source/iop/ioman/DirectoryDevice.h
index 6c29aaa627..608179eb2f 100644
--- a/Source/iop/ioman/DirectoryDevice.h
+++ b/Source/iop/ioman/DirectoryDevice.h
@@ -15,6 +15,7 @@ namespace Iop
 			Framework::CStream* GetFile(uint32, const char*) override;
 			DirectoryIteratorPtr GetDirectory(const char*) override;
 			void MakeDirectory(const char*) override;
+			void Rename(const char*, const char*) override;
 
 		protected:
 			virtual fs::path GetBasePath() = 0;