kinfocenter: new kernel module

requires:
b089f32459

warns about (possibly) missing firmwares too:
https://ibb.co/HKggFvr

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

CMakeLists.txt

@@ -136,6 +136,13 @@ set_package_properties(LibUSB PROPERTIES
     PURPOSE "Provides Logitech mouse support in KControl and USB devices information"
 )
 
+macro_optional_find_package(Kmod)
+set_package_properties(Kmod PROPERTIES
+    DESCRIPTION "Set of tools to handle common tasks with Linux kernel modules"
+    URL "https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git/"
+    TYPE OPTIONAL
+    PURPOSE "Kernel modules information"
+)
 macro_optional_find_package(PCIUTILS)
 set_package_properties(PCIUTILS PROPERTIES
     DESCRIPTION "PciUtils is a library for direct access to PCI slots"

appveyor.yml

@@ -26,7 +26,7 @@ build_script:
         libglu1-mesa-dev mesa-common-dev libmtp-dev libusb-1.0-0-dev libssh-dev \
         libsmbclient-dev libdrm-dev libraw1394-dev libsensors4-dev \
         libegl-dev libpci-dev libopenexr-dev liblzma-dev libbz2-dev libgphoto2-dev \
-        liblightdm-gobject-1-dev libdbusmenu-katie ccache
+        liblightdm-gobject-1-dev libkmod-dev libdbusmenu-katie ccache
 
     export PATH="/usr/lib/ccache/:$PATH"
 

config-workspace.h.cmake

@@ -15,8 +15,8 @@
 /* KDE's static data directory */
 #define KDE_DATADIR "${KDE4_DATA_INSTALL_DIR}"
 
-/* KDE's static shared data directory */
-#define KDE_SHAREDIR "${KDE4_SHARE_INSTALL_PREFIX}"
+/* KDE's static libraries directory */
+#define KDE_LIBDIR "${KDE4_LIB_INSTALL_DIR}"
 
 /* KDE's system configuration directory */
 #define KDE_SYSCONFDIR "${KDE4_SYSCONF_INSTALL_DIR}"

kinfocenter/Modules/CMakeLists.txt

@@ -11,7 +11,8 @@ add_subdirectory( pci )
 add_feature_info("OpenGL support" OPENGL_FOUND "View OpenGL details in kinfocenter." )
 add_feature_info("EGL support" OpenGL_EGL_FOUND "View EGL details in kinfocenter." )
 add_feature_info("DRM support" LIBDRM_FOUND "View 3D acceleration details in kinfocenter." )
-add_feature_info("USB support" LIBUSB_FOUND "USB details in kinfocenter." )
+add_feature_info("USB support" LIBUSB_FOUND "View USB details in kinfocenter." )
+add_feature_info("Kernel modules support" KMOD_FOUND "View kernel module details in kinfocenter." )
 
 if((OPENGL_FOUND AND OPENGL_GLU_FOUND) OR OpenGL_EGL_FOUND)
     add_subdirectory( opengl )
@@ -28,3 +29,7 @@ endif()
 if(RAW1394_FOUND)
    add_subdirectory( view1394 )
 endif(RAW1394_FOUND)
+
+if(KMOD_FOUND)
+   add_subdirectory( kernel )
+endif(KMOD_FOUND)

kinfocenter/Modules/kernel/CMakeLists.txt

@@ -0,0 +1,24 @@
+include_directories(${KMOD_INCLUDE_DIR})
+
+########### next target ###############
+
+set(kcm_kernel_PART_SRCS kernel.cpp )
+
+kde4_add_plugin(kcm_kernel ${kcm_kernel_PART_SRCS})
+
+target_link_libraries(kcm_kernel
+    ${KDE4_KIO_LIBS}
+    ${KMOD_LIBRARIES}
+)
+
+install(
+    TARGETS kcm_kernel
+    DESTINATION ${KDE4_PLUGIN_INSTALL_DIR}
+)
+
+########### install files ###############
+
+install(
+    FILES kernel.desktop
+    DESTINATION ${KDE4_SERVICES_INSTALL_DIR}
+)

kinfocenter/Modules/kernel/Messages.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+$XGETTEXT *.cpp -o $podir/kcmkernel.pot

kinfocenter/Modules/kernel/kernel.cpp

@@ -0,0 +1,178 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2, as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include "kernel.h"
+#include "config-workspace.h"
+
+#include <QHBoxLayout>
+#include <QFile>
+#include <QDir>
+#include <kaboutdata.h>
+#include <kglobal.h>
+#include <kicon.h>
+#include <kdebug.h>
+#include <KPluginFactory>
+#include <KPluginLoader>
+
+#include <libkmod.h>
+
+static const QStringList s_firmwarepaths = QStringList()
+    << "/lib/firmware"
+    << "/usr/lib/firmware"
+    << KDE_LIBDIR "/firmware";
+
+K_PLUGIN_FACTORY(KCMKernelFactory, registerPlugin<KCMKernel>();)
+K_EXPORT_PLUGIN(KCMKernelFactory("kcmkernel"))
+
+KCMKernel::KCMKernel(QWidget *parent, const QVariantList &)
+    : KCModule(KCMKernelFactory::componentData(), parent)
+{
+    KAboutData *about = new KAboutData(
+        I18N_NOOP("kcmkernel"), 0,
+        ki18n("Kernel Modules Information Control Module"),
+        0, KLocalizedString(), KAboutData::License_GPL,
+        ki18n("(c) 2022 Ivailo Monev")
+    );
+
+    about->addAuthor(ki18n("Ivailo Monev"), KLocalizedString(), "xakepa10@gmail.com");
+    setAboutData(about);
+
+    QHBoxLayout* layout = new QHBoxLayout(this);
+    layout->setSpacing(0);
+    layout->setMargin(0);
+    
+    m_treewidget = new QTreeWidget(this);
+    layout->addWidget(m_treewidget);
+    m_treewidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
+    m_treewidget->setAllColumnsShowFocus(true);
+    m_treewidget->setWhatsThis(i18n("This list displays kernel modules information."));
+
+    QStringList treeheaders;
+    treeheaders << i18n("Information") << i18n("Value");
+    m_treewidget->setHeaderLabels(treeheaders);
+    m_treewidget->setRootIsDecorated(true);
+}
+
+void KCMKernel::load()
+{
+    struct kmod_ctx *kmodctx = kmod_new(NULL, NULL);
+    if (!kmodctx) {
+        kWarning() << "Could not create kmod context";
+        return;
+    }
+    struct kmod_list *kmodlist = NULL;
+    int kmodresult = kmod_module_new_from_loaded(kmodctx, &kmodlist);
+    if (kmodresult == 0) {
+        struct kmod_list *kmodit = NULL;
+        for (kmodit = kmodlist; kmodit != NULL; kmodit = kmod_list_next(kmodlist, kmodit)) {
+            struct kmod_module *kmodmodule = kmod_module_get_module(kmodit);
+            // qDebug() << Q_FUNC_INFO << kmod_module_get_name(kmodmodule);
+
+            QStringList modulewidgetitemlist;
+            modulewidgetitemlist << QString::fromAscii(kmod_module_get_name(kmodmodule));
+            QTreeWidgetItem* modulewidgetitem = new QTreeWidgetItem(m_treewidget, modulewidgetitemlist);
+
+            QStringList modulepathwidgetitemlist;
+            modulepathwidgetitemlist << i18n("Path") << QString::fromAscii(kmod_module_get_path(kmodmodule));
+            (void)new QTreeWidgetItem(modulewidgetitem, modulepathwidgetitemlist);
+
+            QStringList moduleoptionswidgetitemlist;
+            moduleoptionswidgetitemlist << i18n("Size") << KGlobal::locale()->formatByteSize(kmod_module_get_size(kmodmodule), 1);
+            (void)new QTreeWidgetItem(modulewidgetitem, moduleoptionswidgetitemlist);
+
+            QTreeWidgetItem* moduleauthorswidgetitem = nullptr;
+            QTreeWidgetItem* modulefirmwareswidgetitem = nullptr;
+
+            struct kmod_list *kseclist = NULL;
+            kmodresult = kmod_module_get_info(kmodmodule, &kseclist);
+            if (kmodresult >= 0) {
+                struct kmod_list *ksecit = NULL;
+                for (ksecit = kseclist; ksecit != NULL; ksecit = kmod_list_next(kseclist, ksecit)) {
+                    const char* kmodkey = kmod_module_info_get_key(ksecit);
+                    const char* kmodvalue = kmod_module_info_get_value(ksecit);
+                    // qDebug() << Q_FUNC_INFO << kmodkey << kmodvalue;
+
+                    QStringList modulesectionwidgetitemlist;
+                    if (qstrcmp(kmodkey, "license") == 0) {
+                        modulesectionwidgetitemlist << i18n("License") << QString::fromAscii(kmodvalue);
+                        (void)new QTreeWidgetItem(modulewidgetitem, modulesectionwidgetitemlist);
+                    } else if (qstrcmp(kmodkey, "description") == 0) {
+                        modulesectionwidgetitemlist << i18n("Description") << QString::fromAscii(kmodvalue);
+                        (void)new QTreeWidgetItem(modulewidgetitem, modulesectionwidgetitemlist);
+                    } else if (qstrcmp(kmodkey, "author") == 0) {
+                        if (!moduleauthorswidgetitem) {
+                            QStringList moduleauthorswidgetitemlist;
+                            moduleauthorswidgetitemlist << i18n("Authors");
+                            moduleauthorswidgetitem = new QTreeWidgetItem(modulewidgetitem, moduleauthorswidgetitemlist);
+                        }
+
+                        modulesectionwidgetitemlist << i18n("Author") << QString::fromAscii(kmodvalue);
+                        (void)new QTreeWidgetItem(moduleauthorswidgetitem, modulesectionwidgetitemlist);
+                    } else if (qstrcmp(kmodkey, "signer") == 0) {
+                        modulesectionwidgetitemlist << i18n("Signer") << QString::fromAscii(kmodvalue);
+                        (void)new QTreeWidgetItem(modulewidgetitem, modulesectionwidgetitemlist);
+                    } else if (qstrcmp(kmodkey, "firmware") == 0) {
+                        if (!modulefirmwareswidgetitem) {
+                            QStringList modulefirmwareswidgetitemlist;
+                            modulefirmwareswidgetitemlist << i18n("Firmwares");
+                            modulefirmwareswidgetitem = new QTreeWidgetItem(modulewidgetitem, modulefirmwareswidgetitemlist);
+                        }
+
+                        modulesectionwidgetitemlist << i18n("Firmware") << QString::fromAscii(kmodvalue);
+                        QTreeWidgetItem* modulefirmwarewidgetitem = new QTreeWidgetItem(
+                            modulefirmwareswidgetitem, modulesectionwidgetitemlist
+                        );
+                        bool isfirmwarepresent = false;
+                        foreach (const QString &firmwarepath, s_firmwarepaths) {
+                            const QString modulefirmwarepath = firmwarepath + QDir::separator() + QString::fromAscii(kmodvalue);
+                            if (QFile::exists(modulefirmwarepath)) {
+                                isfirmwarepresent = true;
+                                break;
+                            }
+                        }
+                        if (!isfirmwarepresent) {
+                            modulewidgetitem->setIcon(1, KIcon("dialog-warning"));
+                            modulefirmwareswidgetitem->setIcon(1, KIcon("dialog-warning"));
+                            modulefirmwarewidgetitem->setIcon(1, KIcon("dialog-warning"));
+                            modulefirmwarewidgetitem->setToolTip(1, i18n("Missing firmware"));
+                        }
+                        // qDebug() << Q_FUNC_INFO << kmod_get_dirname(kmodctx);
+                    }
+                }
+                kmod_module_info_free_list(kseclist);
+            } else {
+                kWarning() << "Could not get module sections list";
+            }
+
+            kmod_module_unref(kmodmodule);
+        }
+        kmod_module_unref_list(kmodlist);
+    } else {
+        kWarning() << "Could not get loaded modules list";
+    }
+    kmod_unref(kmodctx);
+
+    // Resize the column width to the maximum needed
+    m_treewidget->expandAll();
+    m_treewidget->resizeColumnToContents(0);
+    m_treewidget->collapseAll();
+
+    m_treewidget->sortItems(0, Qt::AscendingOrder);
+}
+
+#include "moc_kernel.cpp"

kinfocenter/Modules/kernel/kernel.desktop

@@ -0,0 +1,14 @@
+[Desktop Entry]
+Exec=kcmshell4 kernel
+Type=Service
+X-KDE-ServiceTypes=KCModule
+Icon=preferences-plugin
+
+X-KDE-Library=kcm_kernel
+X-KDE-ParentApp=kinfocenter
+X-DocPath=kinfocenter/index.html#kernel
+
+Name=Kernel Modules
+Comment=Kernel modules information
+
+Categories=Qt;KDE;X-KDE-information;

kinfocenter/Modules/kernel/kernel.h

@@ -0,0 +1,38 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2, as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef KCONTROL_KERNEL_H
+#define KCONTROL_KERNEL_H
+
+#include <QTreeWidget>
+#include <kcmodule.h>
+
+class KCMKernel : public KCModule
+{
+   Q_OBJECT
+public:
+    explicit KCMKernel(QWidget *parent = 0, const QVariantList &list = QVariantList());
+
+public Q_SLOTS:
+    void load();
+
+private:
+    QTreeWidget* m_treewidget;
+};
+
+#endif // KCONTROL_KERNEL_H