First commit

.clang-format

@@ -0,0 +1,67 @@
+# Generated from CLion C/C++ Code Style settings
+BasedOnStyle: LLVM
+AccessModifierOffset: -4
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: Consecutive
+AlignConsecutiveMacros: AcrossEmptyLinesAndComments
+AlignOperands: Align
+AllowAllArgumentsOnNextLine: false
+AllowAllConstructorInitializersOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Always
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Always
+AllowShortLambdasOnASingleLine: All
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterReturnType: None
+AlwaysBreakTemplateDeclarations: Yes
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterCaseLabel: false
+  AfterClass: false
+  AfterControlStatement: Never
+  AfterEnum: false
+  AfterFunction: false
+  AfterNamespace: false
+  AfterUnion: false
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+  SplitEmptyFunction: false
+  SplitEmptyRecord: true
+BreakBeforeBinaryOperators: None
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakInheritanceList: BeforeColon
+ColumnLimit: 0
+CompactNamespaces: false
+ContinuationIndentWidth: 8
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth: 4
+KeepEmptyLinesAtTheStartOfBlocks: true
+MaxEmptyLinesToKeep: 2
+NamespaceIndentation: All
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PointerAlignment: Right
+ReflowComments: false
+SpaceAfterCStyleCast: true
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+TabWidth: 4
+UseTab: Never

.github/workflows/ci.yml

@@ -0,0 +1,65 @@
+name: CI-Release
+
+on:
+  push:
+    branches:
+      - main
+    
+jobs:
+  clang-format:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: clang-format
+      run: |
+        docker run --rm -v ${PWD}:/src  wiiuenv/clang-format:13.0.0-2 -r ./source
+  build-binary:
+    runs-on: ubuntu-18.04
+    needs: clang-format
+    steps:
+    - uses: actions/checkout@v2
+    - name: build binary
+      run: |
+        docker build . -t builder
+        docker run --rm -v ${PWD}:/project builder make
+    - uses: actions/upload-artifact@master
+      with:
+       name: binary
+       path: "*.wms"
+  deploy-binary:
+    needs: build-binary
+    runs-on: ubuntu-18.04
+    steps:   
+    - name: Get environment variables
+      id: get_repository_name
+      run: |
+        echo REPOSITORY_NAME=$(echo "$GITHUB_REPOSITORY" | awk -F / '{print $2}' | sed -e "s/:refs//") >> $GITHUB_ENV
+        echo DATETIME=$(echo $(date '+%Y%m%d-%H%M%S')) >> $GITHUB_ENV
+    - uses: actions/download-artifact@master
+      with:
+        name: binary
+    - name: zip artifact
+      run: zip -r ${{ env.REPOSITORY_NAME }}_${{ env.DATETIME }}.zip *.wms
+    - name: Create Release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ env.REPOSITORY_NAME }}-${{ env.DATETIME }}
+        release_name: Nightly-${{ env.REPOSITORY_NAME }}-${{ env.DATETIME }}
+        draft: false
+        prerelease: true
+        body: |
+           Not a stable release:
+           ${{ github.event.head_commit.message }}
+    - name: Upload Release Asset
+      id: upload-release-asset 
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+        asset_path: ./${{ env.REPOSITORY_NAME }}_${{ env.DATETIME }}.zip
+        asset_name: ${{ env.REPOSITORY_NAME }}_${{ env.DATETIME }}.zip
+        asset_content_type: application/zip

.github/workflows/pr.yml

@@ -0,0 +1,25 @@
+name: CI-PR
+
+on: [pull_request]
+
+jobs:
+  clang-format:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: clang-format
+      run: |
+        docker run --rm -v ${PWD}:/src  wiiuenv/clang-format:13.0.0-2 -r ./source
+  build-binary:
+    runs-on: ubuntu-18.04
+    needs: clang-format
+    steps:
+    - uses: actions/checkout@v2
+    - name: build binary
+      run: |
+        docker build . -t builder
+        docker run --rm -v ${PWD}:/project builder make
+    - uses: actions/upload-artifact@master
+      with:
+       name: binary
+       path: "*.wms"

.gitignore

@@ -0,0 +1,10 @@
+*.cbp
+*.elf
+*.layout
+*.rpx
+build/
+*.save-failed
+.idea/
+cmake-build-debug/
+CMakeLists.txt
+*.wms

Dockerfile

@@ -0,0 +1,7 @@
+FROM wiiuenv/devkitppc:20220303
+
+COPY --from=wiiuenv/libkernel:20211031 /artifacts $DEVKITPRO
+COPY --from=wiiuenv/wiiumodulesystem:20220123 /artifacts $DEVKITPRO
+COPY --from=wiiuenv/libsdutils:20220303 /artifacts $DEVKITPRO
+
+WORKDIR project

Makefile

@@ -0,0 +1,146 @@
+#-------------------------------------------------------------------------------
+.SUFFIXES:
+#-------------------------------------------------------------------------------
+
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+endif
+
+TOPDIR ?= $(CURDIR)
+
+include $(DEVKITPRO)/wums/share/wums_rules
+
+WUMS_ROOT := $(DEVKITPRO)/wums
+WUT_ROOT := $(DEVKITPRO)/wut
+#-------------------------------------------------------------------------------
+# TARGET is the name of the output
+# BUILD is the directory where object files & intermediate files will be placed
+# SOURCES is a list of directories containing source code
+# DATA is a list of directories containing data files
+# INCLUDES is a list of directories containing header files
+#-------------------------------------------------------------------------------
+TARGET		:=	SDHotSwapModule
+BUILD		:=	build
+SOURCES		:=	source
+DATA		:=	data
+INCLUDES	:=	source
+
+#-------------------------------------------------------------------------------
+# options for code generation
+#-------------------------------------------------------------------------------
+CFLAGS	:=	-Wall -Wextra -O0 -ffunction-sections\
+			$(MACHDEP)
+
+CFLAGS	+=	$(INCLUDE) -D__WIIU__ -D__WUT__
+
+CXXFLAGS	:= $(CFLAGS) -std=c++17 
+
+ASFLAGS	:=	-g $(ARCH)
+LDFLAGS	=	-g $(ARCH) $(RPXSPECS) -Wl,-Map,$(notdir $*.map) -T$(WUMS_ROOT)/share/libkernel.ld $(WUMSSPECS) 
+
+ifeq ($(DEBUG),1)
+CXXFLAGS += -DDEBUG -g
+CFLAGS += -DDEBUG -g
+endif
+
+LIBS	:= -lwums -lwut -lkernel
+
+#-------------------------------------------------------------------------------
+# list of directories containing libraries, this must be the top level
+# containing include and lib
+#-------------------------------------------------------------------------------
+LIBDIRS	:= $(PORTLIBS) $(WUT_ROOT) $(WUMS_ROOT)
+
+#-------------------------------------------------------------------------------
+# no real need to edit anything past this point unless you need to add additional
+# rules for different file extensions
+#-------------------------------------------------------------------------------
+ifneq ($(BUILD),$(notdir $(CURDIR)))
+#-------------------------------------------------------------------------------
+
+export OUTPUT	:=	$(CURDIR)/$(TARGET)
+export TOPDIR	:=	$(CURDIR)
+
+export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
+			$(foreach dir,$(DATA),$(CURDIR)/$(dir))
+
+export DEPSDIR	:=	$(CURDIR)/$(BUILD)
+
+CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
+CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
+SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
+BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
+
+#-------------------------------------------------------------------------------
+# use CXX for linking C++ projects, CC for standard C
+#-------------------------------------------------------------------------------
+ifeq ($(strip $(CPPFILES)),)
+#-------------------------------------------------------------------------------
+	export LD	:=	$(CC)
+#-------------------------------------------------------------------------------
+else
+#-------------------------------------------------------------------------------
+	export LD	:=	$(CXX)
+#-------------------------------------------------------------------------------
+endif
+#-------------------------------------------------------------------------------
+
+export OFILES_BIN	:=	$(addsuffix .o,$(BINFILES))
+export OFILES_SRC	:=	$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
+export OFILES 	:=	$(OFILES_BIN) $(OFILES_SRC)
+export HFILES_BIN	:=	$(addsuffix .h,$(subst .,_,$(BINFILES)))
+
+export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
+			$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+			-I$(CURDIR)/$(BUILD)
+
+export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
+
+.PHONY: $(BUILD) clean all
+
+#-------------------------------------------------------------------------------
+all: $(BUILD)
+
+$(BUILD):
+	@[ -d $@ ] || mkdir -p $@
+	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
+
+#-------------------------------------------------------------------------------
+clean:
+	@echo clean ...
+	@rm -fr $(BUILD) $(TARGET).wms $(TARGET).elf
+
+#-------------------------------------------------------------------------------
+else
+.PHONY:	all
+
+DEPENDS	:=	$(OFILES:.o=.d)
+
+#-------------------------------------------------------------------------------
+# main targets
+#-------------------------------------------------------------------------------
+all	:	 $(OUTPUT).wms
+
+$(OUTPUT).wms	:	$(OUTPUT).elf
+$(OUTPUT).elf	:   $(OFILES)
+
+$(OFILES_SRC)	: $(HFILES_BIN)
+
+#-------------------------------------------------------------------------------
+# you need a rule like this for each extension you use as binary data
+#-------------------------------------------------------------------------------
+%.bin.o	%_bin.h :	%.bin
+#-------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@$(bin2o)
+
+#---------------------------------------------------------------------------------
+%.o: %.s
+	@echo $(notdir $<)
+	@$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@ $(ERROR_FILTER)
+
+-include $(DEPENDS)
+
+#-------------------------------------------------------------------------------
+endif
+#-------------------------------------------------------------------------------

README.md

@@ -0,0 +1,30 @@
+[![CI-Release](https://github.com/wiiu-env/SDHotSwapModule/actions/workflows/ci.yml/badge.svg)](https://github.com/wiiu-env/SDHotSwapModule/actions/workflows/ci.yml)
+
+## SDHotSwapModule
+
+Automatically (un)mounts the sd card when the sd card was inserted/ejected. See [libsdutils](https://github.com/wiiu-env/libsdutils) to have an easy way to register a callback for these events.
+
+## Usage
+(`[ENVIRONMENT]` is a placeholder for the actual environment name.)
+
+1. Copy the file `SDHotSwapModule.wms` into `sd:/wiiu/environments/[ENVIRONMENT]/modules`.  
+2. Requires the [WUMSLoader](https://github.com/wiiu-env/WUMSLoader) in `sd:/wiiu/environments/[ENVIRONMENT]/modules/setup`.
+
+## Building using the Dockerfile
+
+It's possible to use a docker image for building. This way you don't need anything installed on your host system.
+
+```
+# Build docker image (only needed once)
+docker build . -t sdhotswapmodule-builder
+
+# make 
+docker run -it --rm -v ${PWD}:/project sdhotswapmodule-builder make
+
+# make clean
+docker run -it --rm -v ${PWD}:/project sdhotswapmodule-builder make clean
+```
+
+## Format the code via docker
+
+`docker run --rm -v ${PWD}:/src wiiuenv/clang-format:13.0.0-2 -r ./source -i`

source/exports.cpp

@@ -0,0 +1,52 @@
+#include "exports.h"
+#include <cstring>
+#include <sdutils/sdutils.h>
+#include <wums.h>
+
+#define MAX_HANDLERS 16
+static SDAttachHandlerFn sHandlers[MAX_HANDLERS] = {nullptr};
+
+void callAttachCallbacks(SDUtilsAttachStatus status) {
+    int i;
+    for (i = 0; i < MAX_HANDLERS; ++i) {
+        if (sHandlers[i]) {
+            sHandlers[i](status);
+        }
+    }
+}
+
+void cleanUpAttachCallbacks() {
+    memset(sHandlers, 0, sizeof(sHandlers));
+}
+
+bool SDUtilsAddAttachHandler(SDAttachHandlerFn fn) {
+    int i;
+
+    for (i = 0; i < MAX_HANDLERS; ++i) {
+        if (sHandlers[i] == fn) {
+            return true;
+        }
+        if (!sHandlers[i]) {
+            sHandlers[i] = fn;
+            return true;
+        }
+    }
+
+    return false;
+}
+
+bool SDUtilsRemoveAttachHandler(SDAttachHandlerFn fn) {
+    int i;
+
+    for (i = 0; i < MAX_HANDLERS; ++i) {
+        if (sHandlers[i] == fn) {
+            sHandlers[i] = nullptr;
+            return true;
+        }
+    }
+
+    return false;
+}
+
+WUMS_EXPORT_FUNCTION(SDUtilsAddAttachHandler);
+WUMS_EXPORT_FUNCTION(SDUtilsRemoveAttachHandler);

source/exports.h

@@ -0,0 +1,6 @@
+#pragma once
+#include <sdutils/sdutils.h>
+
+void callAttachCallbacks(SDUtilsAttachStatus status);
+
+void cleanUpAttachCallbacks();

source/logger.c

@@ -0,0 +1,36 @@
+#ifdef DEBUG
+#include <stdint.h>
+#include <whb/log_cafe.h>
+#include <whb/log_module.h>
+#include <whb/log_udp.h>
+
+uint32_t moduleLogInit = false;
+uint32_t cafeLogInit   = false;
+uint32_t udpLogInit    = false;
+#endif // DEBUG
+
+void initLogging() {
+#ifdef DEBUG
+    if (!(moduleLogInit = WHBLogModuleInit())) {
+        cafeLogInit = WHBLogCafeInit();
+        udpLogInit  = WHBLogUdpInit();
+    }
+#endif // DEBUG
+}
+
+void deinitLogging() {
+#ifdef DEBUG
+    if (moduleLogInit) {
+        WHBLogModuleDeinit();
+        moduleLogInit = false;
+    }
+    if (cafeLogInit) {
+        WHBLogCafeDeinit();
+        cafeLogInit = false;
+    }
+    if (udpLogInit) {
+        WHBLogUdpDeinit();
+        udpLogInit = false;
+    }
+#endif // DEBUG
+}

source/logger.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <string.h>
+#include <whb/log.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef DEBUG
+
+#define __FILENAME_X__                            (strrchr(__FILE__, '\\') ? strrchr(__FILE__, '\\') + 1 : __FILE__)
+#define __FILENAME__                              (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILENAME_X__)
+
+#define DEBUG_FUNCTION_LINE_VERBOSE(FMT, ARGS...) while (0)
+
+#define DEBUG_FUNCTION_LINE(FMT, ARGS...)                                                        \
+    do {                                                                                         \
+        WHBLogPrintf("[%23s]%30s@L%04d: " FMT "", __FILENAME__, __FUNCTION__, __LINE__, ##ARGS); \
+    } while (0)
+
+#define DEBUG_FUNCTION_LINE_WRITE(FMT, ARGS...)                                                  \
+    do {                                                                                         \
+        WHBLogWritef("[%23s]%30s@L%04d: " FMT "", __FILENAME__, __FUNCTION__, __LINE__, ##ARGS); \
+    } while (0)
+
+#else
+
+#define DEBUG_FUNCTION_LINE_VERBOSE(FMT, ARGS...) while (0)
+
+#define DEBUG_FUNCTION_LINE(FMT, ARGS...)         while (0)
+
+#define DEBUG_FUNCTION_LINE_WRITE(FMT, ARGS...)   while (0)
+
+#endif
+
+void initLogging();
+
+void deinitLogging();
+
+#ifdef __cplusplus
+}
+#endif

source/main.cpp

@@ -0,0 +1,105 @@
+#include "exports.h"
+#include "logger.h"
+#include "sdcard.h"
+#include <condition_variable>
+#include <coreinit/cache.h>
+#include <coreinit/filesystem.h>
+#include <coreinit/thread.h>
+#include <mutex>
+#include <sdutils/sdutils.h>
+#include <thread>
+#include <wums.h>
+
+WUMS_MODULE_EXPORT_NAME("homebrew_sdhotswap");
+WUMS_MODULE_SKIP_INIT_FINI();
+
+// This NEEDS to be on the heap. Global DTOR are never called for modules
+// but we need a fresh instance of this condition_variable on each app change.
+std::condition_variable *cv = nullptr;
+std::mutex *cv_m            = nullptr;
+
+std::thread *mountThread     = nullptr;
+bool sStopThread             = false;
+bool sIsSDInsertedAndMounted = false;
+
+int mount_thread() {
+    std::unique_lock<std::mutex> lk(*cv_m);
+    // Wait until the main thread has checked the sd status once.
+    cv->wait(lk);
+    while (!sStopThread) {
+        auto newStatus = IsSDCardInserted();
+        if (newStatus != sIsSDInsertedAndMounted) {
+            if (newStatus) {
+                if (MountSDCard()) {
+                    callAttachCallbacks(SDUTILS_ATTACH_MOUNTED);
+                    sIsSDInsertedAndMounted = true;
+                }
+            } else {
+                if (UnmountSDCard()) {
+                    callAttachCallbacks(SDUTILS_ATTACH_UNMOUNTED);
+                    sIsSDInsertedAndMounted = false;
+                }
+            }
+            OSMemoryBarrier();
+        }
+
+        OSSleepTicks(OSMillisecondsToTicks(100));
+    }
+    return 0;
+}
+
+WUMS_APPLICATION_STARTS() {
+    initLogging();
+
+    sStopThread = false;
+
+    cv   = new std::condition_variable;
+    cv_m = new std::mutex;
+
+    OSMemoryBarrier();
+
+    mountThread       = new std::thread(mount_thread);
+    auto nativeHandle = (OSThread *) mountThread->native_handle();
+    OSSetThreadName(nativeHandle, "SDHotSwapModuleThread");
+    while (!OSSetThreadAffinity(nativeHandle, OS_THREAD_ATTRIB_AFFINITY_CPU2)) {
+        OSSleepTicks(OSMillisecondsToTicks(16));
+    }
+
+    auto check = InitialSDCheck();
+    if (check < 0) {
+        // On error stop thread.
+        sStopThread = true;
+    } else {
+        // Otherwise it retuns the current status.
+        sIsSDInsertedAndMounted = check == 1;
+    }
+
+    OSMemoryBarrier();
+
+    DEBUG_FUNCTION_LINE("Wake up the thread");
+    // Now we can wake up the thread!
+    cv->notify_all();
+}
+
+WUMS_APPLICATION_ENDS() {
+    sStopThread = true;
+    OSMemoryBarrier();
+    cv->notify_all();
+
+    if (mountThread != nullptr) {
+        mountThread->join();
+
+        delete mountThread;
+        mountThread = nullptr;
+    }
+
+    DeInitSDCheck();
+
+    delete cv;
+    delete cv_m;
+    cv   = nullptr;
+    cv_m = nullptr;
+
+    OSMemoryBarrier();
+    deinitLogging();
+}

source/sdcard.cpp

@@ -0,0 +1,101 @@
+#include "exports.h"
+#include "logger.h"
+#include <coreinit/cache.h>
+#include <coreinit/filesystem.h>
+#include <mutex>
+
+static FSClient sClient;
+std::mutex *mutex;
+
+bool sFSClientAdded = false;
+
+int InitialSDCheck() {
+    mutex = new (std::nothrow) std::mutex;
+    if (!mutex) {
+        return -1;
+    }
+    FSStatus result = FSAddClient(&sClient, FS_ERROR_FLAG_ALL);
+    if (result != FS_STATUS_OK) {
+        return -2;
+    } else {
+        sFSClientAdded = true;
+        OSMemoryBarrier();
+        FSCmdBlock fsCmd;
+        FSInitCmdBlock(&fsCmd);
+        FSMountSource mountSource;
+        return FSGetMountSource(&sClient, &fsCmd, FS_MOUNT_SOURCE_SD, &mountSource, FS_ERROR_FLAG_ALL) == FS_STATUS_OK;
+    }
+}
+
+void DeInitSDCheck() {
+    if (mutex) {
+        delete mutex;
+        mutex = nullptr;
+    }
+
+    if (sFSClientAdded) {
+        FSDelClient(&sClient, FS_ERROR_FLAG_ALL);
+        memset(&sClient, 0, sizeof(sClient));
+        sFSClientAdded = false;
+    }
+
+    cleanUpAttachCallbacks();
+
+    OSMemoryBarrier();
+}
+
+int IsSDCardInserted() {
+    if (!sFSClientAdded || !mutex) {
+        return -1;
+    }
+    std::lock_guard<std::mutex> lk(*mutex);
+    FSCmdBlock fsCmd;
+    FSMountSource mountSource;
+    FSInitCmdBlock(&fsCmd);
+    memset(&mountSource, 0, sizeof(mountSource));
+    return FSGetMountSource(&sClient, &fsCmd, FS_MOUNT_SOURCE_SD, &mountSource, FS_ERROR_FLAG_ALL) == FS_STATUS_OK;
+}
+
+int MountSDCard() {
+    if (!sFSClientAdded || !mutex) {
+        return -1;
+    }
+    std::lock_guard<std::mutex> lk(*mutex);
+    FSCmdBlock fsCmd;
+    FSInitCmdBlock(&fsCmd);
+    FSMountSource mountSource;
+    char mountPath[0x80];
+
+    if (FSGetMountSource(&sClient, &fsCmd, FS_MOUNT_SOURCE_SD, &mountSource, FS_ERROR_FLAG_ALL) != FS_STATUS_OK) {
+        DEBUG_FUNCTION_LINE("No SD Card found");
+        return 0;
+    }
+
+    FSStatus res;
+    if ((res = FSMount(&sClient, &fsCmd, &mountSource, mountPath, sizeof(mountPath), FS_ERROR_FLAG_ALL)) != FS_STATUS_OK) {
+        DEBUG_FUNCTION_LINE("FSMount failed %d", res);
+        return 0;
+    }
+    DEBUG_FUNCTION_LINE("Mounted SD Card");
+    return 1;
+}
+
+int UnmountSDCard() {
+    if (!sFSClientAdded || !mutex) {
+        return -1;
+    }
+    std::lock_guard<std::mutex> lk(*mutex);
+    FSCmdBlock fsCmd;
+    FSInitCmdBlock(&fsCmd);
+
+    FSStatus res = FS_STATUS_OK;
+    while (res == FS_STATUS_OK) {
+        res = FSUnmount(&sClient, &fsCmd, "/vol/external01", FS_ERROR_FLAG_ALL);
+        if (res != FS_STATUS_OK && res != FS_STATUS_NOT_FOUND) {
+            return 0;
+        }
+    }
+    DEBUG_FUNCTION_LINE("Unmounted SD Card");
+
+    return 1;
+}

source/sdcard.h

@@ -0,0 +1,27 @@
+#pragma once
+
+int InitialSDCheck();
+
+void DeInitSDCheck();
+
+/**
+ * @return < 0 on error.
+ *         0 when no FAT32 formatted sd card is inserted
+ *         1 when a FAT32 formatted sd card is inserted
+ */
+
+int IsSDCardInserted();
+
+/**
+ * @return < 0 on error.
+ *         0 when mounting failed,
+ *         1 when mounting was successful.
+ */
+int MountSDCard();
+
+/**
+ * @return < 0 on error.
+ *         0 when unmounting failed,
+ *         1 when unmounting was successful.
+ */
+int UnmountSDCard();