New elevated privilege system

CMakeLists.txt

@@ -97,7 +97,6 @@ find_package(
 )
 
 find_package(KF5Archive 5.85.0 CONFIG)
-find_package(KF5Auth CONFIG)
 find_package(KF5SyntaxHighlighting CONFIG)
 find_package(KDDockWidgets CONFIG)
 set_package_properties(
@@ -145,7 +144,6 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 endif()
 
 add_subdirectory(3rdparty)
-add_subdirectory(scripts)
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 add_subdirectory(src)

HACKING.md

@@ -55,7 +55,6 @@ As of now, you will need the following dependencies to build this project:
   - iconthemes
   - parts
   - archive (optional)
-  - kauth (optional)
 - [KDDockWidgets](https://github.com/KDAB/KDDockWidgets)
   - this library is not yet packaged on most distributions, you'll have to compile it yourself from source
 
@@ -124,7 +123,6 @@ make
 # or `make install` it and launch it from your $PATH
 ```
 
-If you want to use KAuth, you need to add `-DCMAKE_INSTALL_PREFIX=/usr/` to the cmake call. Otherwise KAuth won't work.
 If you need help building this project for your platform, [contact us for help](https://www.kdab.com/about/contact/).
 
 ## Debugging the AppImage

README.md

@@ -407,12 +407,7 @@ Consider tweaking /proc/sys/kernel/perf_event_paranoid:
    2 - Disallow kernel profiling for unpriv
 ```
 
-To workaround this limitation, hotspot can temporarily elevate the perf privileges.
-This is achieved by applying
-[these steps](https://superuser.com/questions/980632/run-perf-without-root-right),
-bundled into [a script](scripts/elevate_perf_privileges.sh) that is run via `pkexec`, `kdesudo` or `kdesu`.
-The resulting elevated privileges are also required for kernel tracing in general and Off-CPU profiling in
-particular.
+To workaround this limitation, hotspot can run perf itself with elevated privileges.
 
 ### Export File Format
 

hotspot-config.h.cmake

@@ -20,8 +20,6 @@
 
 #cmakedefine01 Zstd_FOUND
 
-#cmakedefine01 KF5Auth_FOUND
-
 #cmakedefine01 KF5Archive_FOUND
 
 #cmakedefine01 QCustomPlot_FOUND

src/CMakeLists.txt

@@ -50,6 +50,7 @@ set(HOTSPOT_SRCS
     perfoutputwidgettext.cpp
     perfoutputwidgetkonsole.cpp
     costcontextmenu.cpp
+    elevateprivilegeshelper.cpp
     # ui files:
     mainwindow.ui
     aboutdialog.ui
@@ -132,18 +133,3 @@ install(
     FILES hotspot.notifyrc
     DESTINATION ${KDE_INSTALL_KNOTIFY5RCDIR}
 )
-
-if(KF5Auth_FOUND)
-    target_link_libraries(hotspot KF5::AuthCore)
-
-    add_executable(hotspot-auth-helper authhelper.cpp)
-    target_link_libraries(hotspot-auth-helper KF5::AuthCore)
-
-    option(INSTALL_KAUTH_HELPER "Install the KAuth helper, disable when you install to a custom prefix" ON)
-    if(INSTALL_KAUTH_HELPER)
-        install(TARGETS hotspot-auth-helper DESTINATION ${KAUTH_HELPER_INSTALL_DIR})
-
-        kauth_install_helper_files(hotspot-auth-helper com.kdab.hotspot.perf root)
-        kauth_install_actions(com.kdab.hotspot.perf hotspot-perf-authhelper.actions)
-    endif()
-endif()