all: Reorder directory structure

Why are command-line utilities stored in "apps"?
And why are apps like "editor" or "terminal" top-level directories?
Command-line utilities now go in "utils".
GUI stuff now goes in "gui".
This includes: libui -> gui/libui, wind -> gui/wind, GUI apps -> gui/apps, editor&terminal -> gui/apps...
System services go in "system".

CMakeLists.txt

@@ -45,12 +45,10 @@ endif()
 
 add_subdirectory(libluna)
 add_subdirectory(libos)
-add_subdirectory(libui)
+add_subdirectory(gui)
 add_subdirectory(libc)
 add_subdirectory(kernel)
-add_subdirectory(apps)
+add_subdirectory(utils)
 add_subdirectory(tests)
 add_subdirectory(shell)
-add_subdirectory(wind)
-add_subdirectory(terminal)
-add_subdirectory(editor)
+add_subdirectory(system)

apps/CMakeLists.txt

@@ -1,56 +0,0 @@
-function(luna_app SOURCE_FILE APP_NAME)
-    add_executable(${APP_NAME} ${SOURCE_FILE})
-    target_compile_options(${APP_NAME} PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
-    add_dependencies(${APP_NAME} libc)
-    target_include_directories(${APP_NAME} PRIVATE ${LUNA_BASE}/usr/include)
-    target_link_libraries(${APP_NAME} PRIVATE os)
-    install(TARGETS ${APP_NAME} DESTINATION ${LUNA_BASE}/usr/bin)
-endfunction()
-
-add_executable(preinit preinit.cpp)
-target_compile_options(preinit PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
-add_dependencies(preinit libc)
-target_include_directories(preinit PRIVATE ${LUNA_BASE}/usr/include)
-install(TARGETS preinit DESTINATION ${LUNA_ROOT}/initrd/bin)
-
-luna_app(init.cpp init)
-luna_app(env.cpp env)
-luna_app(su.cpp su)
-luna_app(cat.cpp cat)
-luna_app(date.cpp date)
-luna_app(edit.cpp edit)
-luna_app(ls.cpp ls)
-luna_app(chown.cpp chown)
-luna_app(chmod.cpp chmod)
-luna_app(mkdir.cpp mkdir)
-luna_app(rm.cpp rm)
-luna_app(stat.cpp stat)
-luna_app(uname.cpp uname)
-luna_app(base64.cpp base64)
-luna_app(login.cpp login)
-luna_app(mount.cpp mount)
-luna_app(umount.cpp umount)
-luna_app(ps.cpp ps)
-luna_app(time.cpp time)
-luna_app(ln.cpp ln)
-luna_app(mktemp.cpp mktemp)
-luna_app(sysfuzz.cpp sysfuzz)
-luna_app(cp.cpp cp)
-luna_app(kill.cpp kill)
-luna_app(gol.cpp gol)
-target_link_libraries(gol PUBLIC ui)
-luna_app(touch.cpp touch)
-luna_app(free.cpp free)
-luna_app(about.cpp about)
-target_link_libraries(about PUBLIC ui)
-luna_app(taskbar.cpp taskbar)
-target_link_libraries(taskbar PUBLIC ui)
-luna_app(2048.cpp 2048)
-target_link_libraries(2048 PUBLIC ui)
-luna_app(clock.cpp clock)
-target_link_libraries(clock PUBLIC ui)
-luna_app(startui.cpp startui)
-luna_app(launch.cpp launch)
-luna_app(run.cpp run)
-luna_app(sha256sum.cpp sha256sum)
-luna_app(arch.cpp arch)

docs/boot_process.md

@@ -90,7 +90,7 @@ After the kernel stage of the boot process, the system looks like this:
 ```
 
 ## Stage 2: preinit
-_Relevant files: [apps/preinit.cpp](../apps/preinit.cpp)_
+_Relevant files: [system/preinit.cpp](../system/preinit.cpp)_
 
 Luna's userspace init process is split into two programs: `/bin/preinit`, which resides on the initial ramdisk, and `/usr/bin/init`, which resides on the root partition.
 
@@ -133,7 +133,7 @@ After the preinit stage of the boot process, the system looks like this:
 ```
 
 ## Stage 3: init
-_Relevant files: [apps/init.cpp](../apps/init.cpp#L406)_
+_Relevant files: [system/init.cpp](../system/init.cpp#L406)_
 
 `/usr/bin/init` is the actual init system. It is in charge of starting user-defined services.
 
@@ -178,7 +178,7 @@ After the init stage of the boot process, the system looks like this:
 _Note: startui is PID 13 because the `00-home` service is a shell script, which starts a few subprocesses. Since Luna does not allow for PID reuse right now, startui ends up with PID 13._
 
 ## Stage 4: startui
-_Relevant files: [apps/startui.cpp](../apps/startui.cpp), [wind/main.cpp](../wind/main.cpp)_
+_Relevant files: [system/startui.cpp](../system/startui.cpp), [gui/wind/main.cpp](../gui/wind/main.cpp)_
 
 `/usr/bin/startui` starts a graphical user session.
 

gui/CMakeLists.txt

@@ -0,0 +1,15 @@
+function(luna_service SOURCE_FILE APP_NAME)
+    add_executable(${APP_NAME} ${SOURCE_FILE})
+    target_compile_options(${APP_NAME} PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
+    add_dependencies(${APP_NAME} libc)
+    target_include_directories(${APP_NAME} PRIVATE ${LUNA_BASE}/usr/include)
+    target_link_libraries(${APP_NAME} PRIVATE os)
+    install(TARGETS ${APP_NAME} DESTINATION ${LUNA_BASE}/usr/bin)
+endfunction()
+
+add_subdirectory(libui)
+add_subdirectory(wind)
+add_subdirectory(apps)
+
+luna_service(launch.cpp launch)
+luna_service(run.cpp run)

gui/apps/CMakeLists.txt

@@ -0,0 +1,17 @@
+function(luna_app SOURCE_FILE APP_NAME)
+    add_executable(${APP_NAME} ${SOURCE_FILE})
+    target_compile_options(${APP_NAME} PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
+    add_dependencies(${APP_NAME} libc)
+    target_include_directories(${APP_NAME} PRIVATE ${LUNA_BASE}/usr/include)
+    target_link_libraries(${APP_NAME} PRIVATE os ui)
+    install(TARGETS ${APP_NAME} DESTINATION ${LUNA_BASE}/usr/bin)
+endfunction()
+
+luna_app(about.cpp about)
+luna_app(taskbar.cpp taskbar)
+luna_app(2048.cpp 2048)
+luna_app(clock.cpp clock)
+luna_app(gol.cpp gol)
+
+add_subdirectory(editor)
+add_subdirectory(terminal)

system/CMakeLists.txt

@@ -0,0 +1,17 @@
+function(luna_service SOURCE_FILE APP_NAME)
+    add_executable(${APP_NAME} ${SOURCE_FILE})
+    target_compile_options(${APP_NAME} PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
+    add_dependencies(${APP_NAME} libc)
+    target_include_directories(${APP_NAME} PRIVATE ${LUNA_BASE}/usr/include)
+    target_link_libraries(${APP_NAME} PRIVATE os)
+    install(TARGETS ${APP_NAME} DESTINATION ${LUNA_BASE}/usr/bin)
+endfunction()
+
+add_executable(preinit preinit.cpp)
+target_compile_options(preinit PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
+add_dependencies(preinit libc)
+target_include_directories(preinit PRIVATE ${LUNA_BASE}/usr/include)
+install(TARGETS preinit DESTINATION ${LUNA_ROOT}/initrd/bin)
+
+luna_service(init.cpp init)
+luna_service(startui.cpp startui)

tools/install-headers.sh

@@ -14,6 +14,6 @@ mkdir -p $LUNA_BASE/usr/include/moon
 
 cp --preserve=timestamps -RT libc/include/ $LUNA_BASE/usr/include
 cp --preserve=timestamps -RT libluna/include/luna/ $LUNA_BASE/usr/include/luna
-cp --preserve=timestamps -RT libui/include/ui/ $LUNA_BASE/usr/include/ui
+cp --preserve=timestamps -RT gui/libui/include/ui/ $LUNA_BASE/usr/include/ui
 cp --preserve=timestamps -RT libos/include/os/ $LUNA_BASE/usr/include/os
 cp --preserve=timestamps -RT kernel/src/api/ $LUNA_BASE/usr/include/moon

utils/CMakeLists.txt

@@ -0,0 +1,36 @@
+function(luna_utility SOURCE_FILE APP_NAME)
+    add_executable(${APP_NAME} ${SOURCE_FILE})
+    target_compile_options(${APP_NAME} PRIVATE -Os ${COMMON_FLAGS} -Wno-write-strings)
+    add_dependencies(${APP_NAME} libc)
+    target_include_directories(${APP_NAME} PRIVATE ${LUNA_BASE}/usr/include)
+    target_link_libraries(${APP_NAME} PRIVATE os)
+    install(TARGETS ${APP_NAME} DESTINATION ${LUNA_BASE}/usr/bin)
+endfunction()
+
+luna_utility(env.cpp env)
+luna_utility(su.cpp su)
+luna_utility(cat.cpp cat)
+luna_utility(date.cpp date)
+luna_utility(edit.cpp edit)
+luna_utility(ls.cpp ls)
+luna_utility(chown.cpp chown)
+luna_utility(chmod.cpp chmod)
+luna_utility(mkdir.cpp mkdir)
+luna_utility(rm.cpp rm)
+luna_utility(stat.cpp stat)
+luna_utility(uname.cpp uname)
+luna_utility(base64.cpp base64)
+luna_utility(login.cpp login)
+luna_utility(mount.cpp mount)
+luna_utility(umount.cpp umount)
+luna_utility(ps.cpp ps)
+luna_utility(time.cpp time)
+luna_utility(ln.cpp ln)
+luna_utility(mktemp.cpp mktemp)
+luna_utility(sysfuzz.cpp sysfuzz)
+luna_utility(cp.cpp cp)
+luna_utility(kill.cpp kill)
+luna_utility(touch.cpp touch)
+luna_utility(free.cpp free)
+luna_utility(sha256sum.cpp sha256sum)
+luna_utility(arch.cpp arch)