Implement recursive delete IFileSystem service calls

Co-Authored-By: AbandonedCart <twistedumbrella@gmail.com>

app/src/main/cpp/skyline/services/fssrv/IFileSystem.cpp

@@ -69,6 +69,12 @@ namespace skyline::service::fssrv {
         return {};
     }
 
+    Result IFileSystem::DeleteDirectoryRecursively(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        std::string path{request.inputBuf.at(0).as_string(true)};
+        std::filesystem::remove_all(path);
+        return {};
+    }
+
     Result IFileSystem::OpenDirectory(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
         std::string path(request.inputBuf.at(0).as_string(true));
 
@@ -94,6 +100,18 @@ namespace skyline::service::fssrv {
         return {};
     }
 
+    Result IFileSystem::GetTotalSpaceSize(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        response.Push<u64>(90000000);
+        return {};
+    }
+
+    Result IFileSystem::CleanDirectoryRecursively(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        std::string path{request.inputBuf.at(0).as_string(true)};
+        std::filesystem::remove_all(path);
+        backing->CreateDirectory(path, true);
+        return {};
+    }
+
     Result IFileSystem::GetFileTimeStampRaw(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
         struct FileTimeStampRaw {
             u64 created{};

app/src/main/cpp/skyline/services/fssrv/IFileSystem.h

@@ -38,6 +38,11 @@ namespace skyline::service::fssrv {
          */
         Result DeleteDirectory(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /**
+         * @brief Recursively delete a directory at the specified path in the filesystem
+         */
+        Result DeleteDirectoryRecursively(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         /**
          * @brief Queries the DirectoryEntryType of the given path
          * @url https://switchbrew.org/wiki/Filesystem_services#GetEntryType
@@ -67,6 +72,18 @@ namespace skyline::service::fssrv {
          */
         Result GetFreeSpaceSize(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /**
+         * @brief Returns the total space (free + used) of the filesystem
+         * @url https://switchbrew.org/wiki/Filesystem_services#GetTotalSpaceSize
+         */
+        Result GetTotalSpaceSize(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
+        /**
+         * @brief Recursively delete the contents of a directory at the specified path
+         * @url https://switchbrew.org/wiki/Filesystem_services#CleanDirectoryRecursively
+         */
+        Result CleanDirectoryRecursively(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         /**
          * @url https://switchbrew.org/wiki/Filesystem_services#GetFileTimeStampRaw
          */
@@ -77,11 +94,14 @@ namespace skyline::service::fssrv {
             SFUNC(0x1, IFileSystem, DeleteFile),
             SFUNC(0x2, IFileSystem, CreateDirectory),
             SFUNC(0x3, IFileSystem, DeleteDirectory),
+            SFUNC(0x4, IFileSystem, DeleteDirectoryRecursively),
             SFUNC(0x7, IFileSystem, GetEntryType),
             SFUNC(0x8, IFileSystem, OpenFile),
             SFUNC(0x9, IFileSystem, OpenDirectory),
             SFUNC(0xA, IFileSystem, Commit),
             SFUNC(0xB, IFileSystem, GetFreeSpaceSize),
+            SFUNC(0xC, IFileSystem, GetTotalSpaceSize),
+            SFUNC(0xD, IFileSystem, CleanDirectoryRecursively)
             SFUNC(0xE, IFileSystem, GetFileTimeStampRaw)
         )
     };