Added linux support (tested on Ubuntu)

CMakeList: fixed for building on linux
processpicker: linux process enumeration
main.cpp: "_Exit()" works on linux & windows
"ProcessMemory" plugin: added linux support

CMakeLists.txt

@@ -43,9 +43,10 @@ target_link_libraries(ReclassX PRIVATE
     Qt6::Svg
     Qt6::Concurrent
     QScintilla::QScintilla
-    dbghelp
-    psapi
 )
+if(WIN32)
+    target_link_libraries(ReclassX PRIVATE dbghelp psapi)
+endif()
 
 add_custom_target(screenshot ALL
     COMMAND ReclassX --screenshot ${CMAKE_BINARY_DIR}/screenshot.png
@@ -140,7 +141,10 @@ if(BUILD_TESTING)
     target_include_directories(test_controller PRIVATE src)
     target_link_libraries(test_controller PRIVATE
         Qt6::Widgets Qt6::PrintSupport Qt6::Concurrent Qt6::Test
-        QScintilla::QScintilla dbghelp psapi)
+        QScintilla::QScintilla)
+    if(WIN32)
+        target_link_libraries(test_controller PRIVATE dbghelp psapi)
+    endif()
     add_test(NAME test_controller COMMAND test_controller)
 
     add_executable(test_validation tests/test_validation.cpp
@@ -149,7 +153,10 @@ if(BUILD_TESTING)
     target_include_directories(test_validation PRIVATE src)
     target_link_libraries(test_validation PRIVATE
         Qt6::Widgets Qt6::PrintSupport Qt6::Concurrent Qt6::Test
-        QScintilla::QScintilla dbghelp psapi)
+        QScintilla::QScintilla)
+    if(WIN32)
+        target_link_libraries(test_validation PRIVATE dbghelp psapi)
+    endif()
     add_test(NAME test_validation COMMAND test_validation)
 
     add_executable(test_generator tests/test_generator.cpp
@@ -164,7 +171,10 @@ if(BUILD_TESTING)
     target_include_directories(test_context_menu PRIVATE src)
     target_link_libraries(test_context_menu PRIVATE
         Qt6::Widgets Qt6::PrintSupport Qt6::Concurrent Qt6::Test
-        QScintilla::QScintilla dbghelp psapi)
+        QScintilla::QScintilla)
+    if(WIN32)
+        target_link_libraries(test_context_menu PRIVATE dbghelp psapi)
+    endif()
     add_test(NAME test_context_menu COMMAND test_context_menu)
 
     add_executable(test_new_features tests/test_new_features.cpp
@@ -173,7 +183,10 @@ if(BUILD_TESTING)
     target_include_directories(test_new_features PRIVATE src)
     target_link_libraries(test_new_features PRIVATE
         Qt6::Widgets Qt6::PrintSupport Qt6::Concurrent Qt6::Test
-        QScintilla::QScintilla dbghelp psapi)
+        QScintilla::QScintilla)
+    if(WIN32)
+        target_link_libraries(test_new_features PRIVATE dbghelp psapi)
+    endif()
     add_test(NAME test_new_features COMMAND test_new_features)
 endif()
 add_subdirectory(plugins/ProcessMemory)

plugins/ProcessMemory/CMakeLists.txt

@@ -26,8 +26,18 @@ add_library(ProcessMemoryPlugin SHARED ${PLUGIN_SOURCES})
 # Link Qt
 target_link_libraries(ProcessMemoryPlugin PRIVATE Qt6::Widgets)
 
+# Platform-specific linking
+if(WIN32)
+    target_link_libraries(ProcessMemoryPlugin PRIVATE psapi shell32)
+endif()
+
+# On Linux, hide all symbols by default so only RCX_PLUGIN_EXPORT-marked ones are exported
+if(UNIX AND NOT APPLE)
+    target_compile_options(ProcessMemoryPlugin PRIVATE -fvisibility=hidden)
+endif()
+
 # Include directories
-target_include_directories(ProcessMemoryPlugin PRIVATE 
+target_include_directories(ProcessMemoryPlugin PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/../../src
 )
 

plugins/ProcessMemory/ProcessMemoryPlugin.cpp

@@ -1,17 +1,40 @@
 #include "ProcessMemoryPlugin.h"
+
 #include "../../src/processpicker.h"
+
 #include <QStyle>
 #include <QApplication>
 #include <QRegularExpression>
 #include <QMessageBox>
 #include <QPixmap>
 #include <QImage>
+#include <QDir>
+#include <QFileInfo>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <tlhelp32.h>
+#include <psapi.h>
+#include <shellapi.h>
+#elif defined(__linux__)
+#include <climits>
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/uio.h>
+#include <fstream>
+#include <sstream>
+#include <cstring>
+#endif
 
 // ──────────────────────────────────────────────────────────────────────────
 // ProcessMemoryProvider implementation
 // ──────────────────────────────────────────────────────────────────────────
 
-ProcessMemoryProvider::ProcessMemoryProvider(DWORD pid, const QString& processName)
+#ifdef _WIN32
+
+ProcessMemoryProvider::ProcessMemoryProvider(uint32_t pid, const QString& processName)
     : m_handle(nullptr)
     , m_pid(pid)
     , m_processName(processName)
@@ -19,7 +42,7 @@ ProcessMemoryProvider::ProcessMemoryProvider(DWORD pid, const QString& processNa
     , m_base(0)
 {
     // Try to open with write access first
-    m_handle = OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION | PROCESS_QUERY_INFORMATION, 
+    m_handle = OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION | PROCESS_QUERY_INFORMATION,
                           FALSE, pid);
     if (m_handle)
         m_writable = true;
@@ -31,21 +54,13 @@ ProcessMemoryProvider::ProcessMemoryProvider(DWORD pid, const QString& processNa
     }
 
     if (m_handle)
-    {
         cacheModules();
-    }
-}
-
-ProcessMemoryProvider::~ProcessMemoryProvider()
-{
-    if (m_handle)
-        CloseHandle(m_handle);
 }
 
 bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
 {
     if (!m_handle || len <= 0) return false;
-    
+
     SIZE_T bytesRead = 0;
     if (ReadProcessMemory(m_handle, (LPCVOID)(m_base + addr), buf, (SIZE_T)len, &bytesRead))
         return bytesRead == (SIZE_T)len;
@@ -55,7 +70,7 @@ bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
 bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
 {
     if (!m_handle || !m_writable || len <= 0) return false;
-    
+
     SIZE_T bytesWritten = 0;
     if (WriteProcessMemory(m_handle, (LPVOID)(m_base + addr), buf, (SIZE_T)len, &bytesWritten))
         return bytesWritten == (SIZE_T)len;
@@ -64,9 +79,16 @@ bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
 
 QString ProcessMemoryProvider::getSymbol(uint64_t addr) const
 {
-    // TODO: Implement module enumeration with EnumProcessModules
+    for (const auto& mod : m_modules)
-    // For now, just return empty (no symbol resolution)
+    {
-    Q_UNUSED(addr);
+        if (addr >= mod.base && addr < mod.base + mod.size)
+        {
+            uint64_t offset = addr - mod.base;
+            return QStringLiteral("%1+0x%2")
+                .arg(mod.name)
+                .arg(offset, 0, 16, QChar('0'));
+        }
+    }
     return {};
 }
 
@@ -98,6 +120,190 @@ void ProcessMemoryProvider::cacheModules()
     }
 }
 
+#elif defined(__linux__)
+
+ProcessMemoryProvider::ProcessMemoryProvider(uint32_t pid, const QString& processName)
+    : m_fd(-1)
+    , m_pid(pid)
+    , m_processName(processName)
+    , m_writable(false)
+    , m_base(0)
+{
+    QString memPath = QStringLiteral("/proc/%1/mem").arg(pid);
+    QByteArray pathUtf8 = memPath.toUtf8();
+
+    // Try read-write first
+    m_fd = ::open(pathUtf8.constData(), O_RDWR);
+    if (m_fd >= 0)
+        m_writable = true;
+    else
+    {
+        // Fall back to read-only
+        m_fd = ::open(pathUtf8.constData(), O_RDONLY);
+        m_writable = false;
+    }
+
+    if (m_fd >= 0)
+        cacheModules();
+
+}
+
+bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
+{
+    if (m_fd < 0 || len <= 0) return false;
+
+    uint64_t absAddr = m_base + addr;
+
+    // Try process_vm_readv first (faster, no fd seek contention)
+    struct iovec local;
+    local.iov_base = buf;
+    local.iov_len = static_cast<size_t>(len);
+
+    struct iovec remote;
+    remote.iov_base = reinterpret_cast<void*>(absAddr);
+    remote.iov_len = static_cast<size_t>(len);
+
+    ssize_t nread = process_vm_readv(m_pid, &local, 1, &remote, 1, 0);
+    if (nread == static_cast<ssize_t>(len))
+        return true;
+
+    // Fallback: pread on /proc/<pid>/mem
+    nread = ::pread(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(absAddr));
+    return nread == static_cast<ssize_t>(len);
+}
+
+bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
+{
+    if (m_fd < 0 || !m_writable || len <= 0) return false;
+
+    uint64_t absAddr = m_base + addr;
+
+    // Try process_vm_writev first
+    struct iovec local;
+    local.iov_base = const_cast<void*>(buf);
+    local.iov_len = static_cast<size_t>(len);
+
+    struct iovec remote;
+    remote.iov_base = reinterpret_cast<void*>(absAddr);
+    remote.iov_len = static_cast<size_t>(len);
+
+    ssize_t nwritten = process_vm_writev(m_pid, &local, 1, &remote, 1, 0);
+    if (nwritten == static_cast<ssize_t>(len))
+        return true;
+
+    // Fallback: pwrite on /proc/<pid>/mem
+    nwritten = ::pwrite(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(absAddr));
+    return nwritten == static_cast<ssize_t>(len);
+}
+
+QString ProcessMemoryProvider::getSymbol(uint64_t addr) const
+{
+    for (const auto& mod : m_modules)
+    {
+        if (addr >= mod.base && addr < mod.base + mod.size)
+        {
+            uint64_t offset = addr - mod.base;
+            return QStringLiteral("%1+0x%2")
+                .arg(mod.name)
+                .arg(offset, 0, 16, QChar('0'));
+        }
+    }
+    return {};
+}
+
+void ProcessMemoryProvider::cacheModules()
+{
+    // Parse /proc/<pid>/maps to discover loaded modules
+    QString mapsPath = QStringLiteral("/proc/%1/maps").arg(m_pid);
+    std::ifstream mapsFile(mapsPath.toStdString());
+    if (!mapsFile.is_open()) return;
+
+    // Accumulate base/end per path, then convert to ModuleInfo
+    struct Range { uint64_t base; uint64_t end; };
+    QMap<QString, Range> moduleRanges;
+
+    std::string line;
+    bool firstExec = true;
+    while (std::getline(mapsFile, line))
+    {
+        // Format: addr_start-addr_end perms offset dev inode pathname
+        // Example: 00400000-00452000 r-xp 00000000 08:02 173521 /usr/bin/foo
+        std::istringstream iss(line);
+        std::string addrRange, perms, offset, dev, inode, pathname;
+        iss >> addrRange >> perms >> offset >> dev >> inode;
+        std::getline(iss, pathname);
+
+        // Trim leading whitespace from pathname
+        size_t start = pathname.find_first_not_of(" \t");
+        if (start == std::string::npos) continue;
+        pathname = pathname.substr(start);
+
+        // Skip non-file mappings
+        if (pathname.empty() || pathname[0] != '/') continue;
+        // Skip special mappings
+        if (pathname.find("/dev/") == 0 || pathname.find("/memfd:") == 0) continue;
+
+        // Parse address range
+        auto dash = addrRange.find('-');
+        if (dash == std::string::npos) continue;
+        uint64_t addrStart = std::stoull(addrRange.substr(0, dash), nullptr, 16);
+        uint64_t addrEnd = std::stoull(addrRange.substr(dash + 1), nullptr, 16);
+
+        QString qpath = QString::fromStdString(pathname);
+
+        // Track first executable mapping as the base address
+        if (firstExec && perms.size() >= 3 && perms[2] == 'x')
+        {
+            m_base = addrStart;
+            firstExec = false;
+        }
+
+        auto it = moduleRanges.find(qpath);
+        if (it != moduleRanges.end())
+        {
+            if (addrStart < it->base) it->base = addrStart;
+            if (addrEnd > it->end) it->end = addrEnd;
+        }
+        else
+        {
+            moduleRanges.insert(qpath, {addrStart, addrEnd});
+        }
+    }
+
+    m_modules.reserve(moduleRanges.size());
+    for (auto it = moduleRanges.begin(); it != moduleRanges.end(); ++it)
+    {
+        QFileInfo fi(it.key());
+        m_modules.append({
+            fi.fileName(),
+            it->base,
+            it->end - it->base
+        });
+    }
+}
+
+#endif // platform
+
+ProcessMemoryProvider::~ProcessMemoryProvider()
+{
+#ifdef _WIN32
+    if (m_handle)
+        CloseHandle(m_handle);
+#elif defined(__linux__)
+    if (m_fd >= 0)
+        ::close(m_fd);
+#endif
+}
+
+int ProcessMemoryProvider::size() const
+{
+#ifdef _WIN32
+    return m_handle ? INT_MAX : 0;
+#elif defined(__linux__)
+    return m_fd ? INT_MAX : 0;
+#endif
+}
+
 // ──────────────────────────────────────────────────────────────────────────
 // ProcessMemoryPlugin implementation
 // ──────────────────────────────────────────────────────────────────────────
@@ -119,27 +325,26 @@ std::unique_ptr<rcx::Provider> ProcessMemoryPlugin::createProvider(const QString
     // Parse target: "pid:name" or just "pid"
     QStringList parts = target.split(':');
     bool ok = false;
-    DWORD pid = parts[0].toUInt(&ok);
+    uint32_t pid = parts[0].toUInt(&ok);
-    
+
-    if (!ok || pid == 0) {
+    if (!ok || pid == 0)
+    {
         if (errorMsg) *errorMsg = "Invalid PID: " + target;
         return nullptr;
     }
-    
+
     QString name = parts.size() > 1 ? parts[1] : QString("PID %1").arg(pid);
-    
+
     auto provider = std::make_unique<ProcessMemoryProvider>(pid, name);
     if (!provider->isValid())
     {
         if (errorMsg)
-        {
             *errorMsg = QString("Failed to open process %1 (PID: %2)\n"
                                "Ensure the process is running and you have sufficient permissions.")
                         .arg(name).arg(pid);
-        }
         return nullptr;
     }
-    
+
     return provider;
 }
 
@@ -151,26 +356,49 @@ uint64_t ProcessMemoryPlugin::getInitialBaseAddress(const QString& target) const
     bool ok = false;
     DWORD pid = parts[0].toUInt(&ok);
     if (!ok || pid == 0) return 0;
-    
+
     // Open process to get main module base
     HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);
     if (!hProc) return 0;
-    
+
     uint64_t base = 0;
     HMODULE hMod = nullptr;
     DWORD needed = 0;
-    
+
     if (EnumProcessModulesEx(hProc, &hMod, sizeof(hMod), &needed, LIST_MODULES_ALL) && hMod)
     {
         MODULEINFO mi{};
         if (GetModuleInformation(hProc, hMod, &mi, sizeof(mi)))
-        {
             base = (uint64_t)mi.lpBaseOfDll;
-        }
     }
-    
+
     CloseHandle(hProc);
     return base;
+#elif defined(__linux__)
+    // Parse PID from target
+    QStringList parts = target.split(':');
+    bool ok = false;
+    uint32_t pid = parts[0].toUInt(&ok);
+    if (!ok || pid == 0) return 0;
+
+    // Find first executable mapping from /proc/<pid>/maps
+    QString mapsPath = QStringLiteral("/proc/%1/maps").arg(pid);
+    std::ifstream mapsFile(mapsPath.toStdString());
+    if (!mapsFile.is_open()) return 0;
+
+    std::string line;
+    while (std::getline(mapsFile, line)) {
+        std::istringstream iss(line);
+        std::string addrRange, perms;
+        iss >> addrRange >> perms;
+        if (perms.size() >= 3 && perms[2] == 'x') {
+            auto dash = addrRange.find('-');
+            if (dash != std::string::npos) {
+                return std::stoull(addrRange.substr(0, dash), nullptr, 16);
+            }
+        }
+    }
+    return 0;
 #else
     Q_UNUSED(target);
     return 0;
@@ -181,7 +409,7 @@ bool ProcessMemoryPlugin::selectTarget(QWidget* parent, QString* target)
 {
     // Use custom process enumeration from plugin
     QVector<PluginProcessInfo> pluginProcesses = enumerateProcesses();
-    
+
     // Convert to ProcessInfo for ProcessPicker
     QList<ProcessInfo> processes;
     for (const auto& pinfo : pluginProcesses)
@@ -193,50 +421,50 @@ bool ProcessMemoryPlugin::selectTarget(QWidget* parent, QString* target)
         info.icon = pinfo.icon;
         processes.append(info);
     }
-    
+
     // Show ProcessPicker with custom process list
     ProcessPicker picker(processes, parent);
     if (picker.exec() == QDialog::Accepted) {
         uint32_t pid = picker.selectedProcessId();
         QString name = picker.selectedProcessName();
-        
+
         // Format target as "pid:name"
         *target = QString("%1:%2").arg(pid).arg(name);
         return true;
     }
-    
+
     return false;
 }
 
 QVector<PluginProcessInfo> ProcessMemoryPlugin::enumerateProcesses()
 {
     QVector<PluginProcessInfo> processes;
-    
+
 #ifdef _WIN32
     HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
     if (snapshot == INVALID_HANDLE_VALUE) {
         return processes;
     }
-    
+
     PROCESSENTRY32W entry;
     entry.dwSize = sizeof(entry);
-    
+
     if (Process32FirstW(snapshot, &entry)) {
         do {
             PluginProcessInfo info;
             info.pid = entry.th32ProcessID;
             info.name = QString::fromWCharArray(entry.szExeFile);
-            
+
             // Try to get full path and icon
             HANDLE hProcess = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, entry.th32ProcessID);
             if (hProcess) {
                 wchar_t path[MAX_PATH * 2];
                 DWORD pathLen = sizeof(path) / sizeof(wchar_t);
-                
+
                 // Try QueryFullProcessImageNameW first
                 if (QueryFullProcessImageNameW(hProcess, 0, path, &pathLen)) {
                     info.path = QString::fromWCharArray(path);
-                    
+
                     // Extract icon
                     SHFILEINFOW sfi = {};
                     if (SHGetFileInfoW(path, 0, &sfi, sizeof(sfi), SHGFI_ICON | SHGFI_SMALLICON)) {
@@ -247,18 +475,57 @@ QVector<PluginProcessInfo> ProcessMemoryPlugin::enumerateProcesses()
                         }
                     }
                 }
-                
+
                 CloseHandle(hProcess);
             }
-            
+
             processes.append(info);
-            
+
         } while (Process32NextW(snapshot, &entry));
     }
-    
+
     CloseHandle(snapshot);
+#elif defined(__linux__)
+    QDir procDir("/proc");
+    QStringList entries = procDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
+    QIcon defaultIcon = qApp->style()->standardIcon(QStyle::SP_ComputerIcon);
+
+    for (const QString& entry : entries) {
+        bool ok = false;
+        uint32_t pid = entry.toUInt(&ok);
+        if (!ok || pid == 0) continue;
+
+        // Read process name from /proc/<pid>/comm
+        QString commPath = QStringLiteral("/proc/%1/comm").arg(pid);
+        QFile commFile(commPath);
+        QString procName;
+        if (commFile.open(QIODevice::ReadOnly)) {
+            procName = QString::fromUtf8(commFile.readAll()).trimmed();
+            commFile.close();
+        }
+        if (procName.isEmpty()) continue;  // Skip kernel threads with no name
+
+        // Read exe path from /proc/<pid>/exe symlink
+        QString exePath = QStringLiteral("/proc/%1/exe").arg(pid);
+        QFileInfo exeInfo(exePath);
+        QString resolvedPath;
+        if (exeInfo.exists())
+            resolvedPath = exeInfo.symLinkTarget();
+
+        // Skip if we can't read the process memory (no access)
+        QString memPath = QStringLiteral("/proc/%1/mem").arg(pid);
+        if (::access(memPath.toUtf8().constData(), R_OK) != 0)
+            continue;
+
+        PluginProcessInfo info;
+        info.pid = pid;
+        info.name = procName;
+        info.path = resolvedPath;
+        info.icon = defaultIcon;
+        processes.append(info);
+    }
 #endif
-    
+
     return processes;
 }
 
@@ -266,7 +533,7 @@ QVector<PluginProcessInfo> ProcessMemoryPlugin::enumerateProcesses()
 // Plugin factory
 // ──────────────────────────────────────────────────────────────────────────
 
-extern "C" __declspec(dllexport) IPlugin* CreatePlugin()
+extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin()
 {
     return new ProcessMemoryPlugin();
 }

plugins/ProcessMemory/ProcessMemoryPlugin.h

@@ -1,42 +1,45 @@
 #pragma once
 #include "../../src/iplugin.h"
 #include "../../src/core.h"
-#include <windows.h>
+
-#include <tlhelp32.h>
+#include <cstdint>
-#include <psapi.h>
-#include <shellapi.h>
 
 /**
- * Windows process memory provider
+ * Process memory provider
- * Reads/writes memory from a live process using Win32 API
+ * Reads/writes memory from a live process using platform APIs
  */
-class ProcessMemoryProvider : public rcx::Provider {
+class ProcessMemoryProvider : public rcx::Provider
+{
 public:
-    ProcessMemoryProvider(DWORD pid, const QString& processName);
+    ProcessMemoryProvider(uint32_t pid, const QString& processName);
     ~ProcessMemoryProvider() override;
-    
+
     // Required overrides
     bool read(uint64_t addr, void* buf, int len) const override;
-    int size() const override { return m_handle ? INT_MAX : NULL; } // Process memory has no fixed size
+    int size() const override;
-    
+
     // Optional overrides
     bool write(uint64_t addr, const void* buf, int len) override;
     bool isWritable() const override { return m_writable; }
     QString name() const override { return m_processName; }
     QString kind() const override { return QStringLiteral("LocalProcess"); }
     QString getSymbol(uint64_t addr) const override;
-    
+
     // Process-specific helpers
-    DWORD pid() const { return m_pid; }
+    uint32_t pid() const { return m_pid; }
     uint64_t baseAddress() const { return m_base; }
     void refreshModules() { m_modules.clear(); cacheModules(); }
 
 private:
     void cacheModules();
-    
+
 private:
-    HANDLE m_handle;
+#ifdef _WIN32
-    DWORD m_pid;
+    void* m_handle;
+#elif defined(__linux__)
+    int m_fd;
+#endif
+    uint32_t m_pid;
     QString m_processName;
     bool m_writable;
     uint64_t m_base;
@@ -52,24 +55,25 @@ private:
 /**
  * Plugin that provides ProcessMemoryProvider
  */
-class ProcessMemoryPlugin : public IProviderPlugin {
+class ProcessMemoryPlugin : public IProviderPlugin
+{
 public:
     std::string Name() const override { return "Process Memory"; }
     std::string Version() const override { return "1.0.0"; }
     std::string Author() const override { return "ReclassX"; }
-    std::string Description() const override { return "Read and write memory from local running Windows processes"; }
+    std::string Description() const override { return "Read and write memory from local running processes"; }
     k_ELoadType LoadType() const override { return k_ELoadTypeAuto; }
     QIcon Icon() const override;
-    
+
     bool canHandle(const QString& target) const override;
     std::unique_ptr<rcx::Provider> createProvider(const QString& target, QString* errorMsg) override;
     uint64_t getInitialBaseAddress(const QString& target) const override;
     bool selectTarget(QWidget* parent, QString* target) override;
-    
+
     // Optional: provide custom process list
     bool providesProcessList() const override { return true; }
     QVector<PluginProcessInfo> enumerateProcesses() override;
 };
 
 // Plugin export
-extern "C" __declspec(dllexport) IPlugin* CreatePlugin();
+extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin();

src/iplugin.h

@@ -4,14 +4,20 @@
 #include <memory>
 #include <string>
 
+#ifdef _WIN32
+    #define RCX_PLUGIN_EXPORT __declspec(dllexport)
+#else
+    #define RCX_PLUGIN_EXPORT __attribute__((visibility("default")))
+#endif
+
 // Forward declaration
 namespace rcx { class Provider; }
 
 /**
  * Plugin interface for ReclassX
- * 
+ *
- * Plugins are loaded from the "Plugins" folder as DLLs.
+ * Plugins are loaded from the "Plugins" folder as shared libraries.
- * Each plugin must export a C function: extern "C" __declspec(dllexport) IPlugin* CreatePlugin();
+ * Each plugin must export a C function: extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin();
  */
 class IPlugin {
 public:

src/main.cpp

@@ -1188,7 +1188,7 @@ int main(int argc, char* argv[]) {
         QTimer::singleShot(1000, [&window, out]() {
             QDir().mkpath(QFileInfo(out).absolutePath());
             window.grab().save(out);
-            ::_exit(0);  // immediate exit — no need for clean shutdown in screenshot mode
+            ::_Exit(0);  // immediate exit — no need for clean shutdown in screenshot mode
         });
     }
 

src/processpicker.cpp

@@ -11,6 +11,11 @@
 #include <tlhelp32.h>
 #include <psapi.h>
 #include <shellapi.h>
+#elif defined(__linux__)
+#include <QDir>
+#include <QStyle>
+#include <QApplication>
+#include <unistd.h>
 #endif
 
 ProcessPicker::ProcessPicker(QWidget *parent)
@@ -155,6 +160,45 @@ void ProcessPicker::enumerateProcesses()
     }
     
     CloseHandle(snapshot);
+#elif defined(__linux__)
+    QDir procDir("/proc");
+    QStringList entries = procDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
+    QIcon defaultIcon = qApp->style()->standardIcon(QStyle::SP_ComputerIcon);
+
+    for (const QString& entry : entries) {
+        bool ok = false;
+        uint32_t pid = entry.toUInt(&ok);
+        if (!ok || pid == 0) continue;
+
+        // Read process name from /proc/<pid>/comm
+        QString commPath = QStringLiteral("/proc/%1/comm").arg(pid);
+        QFile commFile(commPath);
+        QString procName;
+        if (commFile.open(QIODevice::ReadOnly)) {
+            procName = QString::fromUtf8(commFile.readAll()).trimmed();
+            commFile.close();
+        }
+        if (procName.isEmpty()) continue;
+
+        // Read exe path from /proc/<pid>/exe symlink
+        QString exePath = QStringLiteral("/proc/%1/exe").arg(pid);
+        QFileInfo exeInfo(exePath);
+        QString resolvedPath;
+        if (exeInfo.exists())
+            resolvedPath = exeInfo.symLinkTarget();
+
+        // Skip if we can't read the process memory
+        QString memPath = QStringLiteral("/proc/%1/mem").arg(pid);
+        if (::access(memPath.toUtf8().constData(), R_OK) != 0)
+            continue;
+
+        ProcessInfo info;
+        info.pid = pid;
+        info.name = procName;
+        info.path = resolvedPath;
+        info.icon = defaultIcon;
+        processes.append(info);
+    }
 #else
     // Platform not supported
     QMessageBox::warning(this, "Error", "Process enumeration not supported on this platform.");