Applications executed by portal placed under xdg-desktop-portal.service

[Piroro-hs]

Opening browser (firefox) via OpenURI interface leads firefox to be placed under the xdg-desktop-portal.service cgroup.

$ systemctl status xdg-desktop-portal.service
● xdg-desktop-portal.service - Portal service
     Loaded: loaded (/usr/lib/systemd/user/xdg-desktop-portal.service; static)
     Active: active (running) since Thu 2024-09-26 20:29:02 JST; 14min ago
 Invocation: 72b9ce7220854c439f20dedb2d4905ed
   Main PID: 806 (xdg-desktop-por)
      Tasks: 255 (limit: 38070)
     Memory: 750.7M (peak: 1.1G)
        CPU: 14.768s
     CGroup: /user.slice/user-1000.slice/[email protected]/session.slice/xdg-desktop-portal.service
             ├─ 806 /usr/lib/xdg-desktop-portal
             ├─2713 /usr/lib/firefox/firefox https://archlinux.org/packages/extra/x86_64/vte-common/
             ├─2791 /usr/lib/firefox/firefox -contentproc -parentBuildID 20240924171327 -prefsLen 36390 -prefMapSize 258322 -appDir /usr/lib/firefox/browser {3d71a1a1-8c77-46a7-8649-aa5c34039b4a} 2713 true socket
             ├─2808 /usr/lib/firefox/firefox -contentproc -childID 1 -isForBrowser -prefsLen 36390 -prefMapSize 258322 -jsInitLen 234840 -parentBuildID 20240924171327 -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appDir /usr/lib/firefox/browser {bfa16486-aa7e-407d-9bf2-0809c2bfd1fe} 2713 true tab
             ├─2966 /usr/bin/keepassxc-proxy /home/piroro/.mozilla/native-messaging-hosts/org.keepassxc.keepassxc_browser.json [email protected]
             ├─2995 /usr/lib/firefox/firefox -contentproc -parentBuildID 20240924171327 -sandboxingKind 0 -prefsLen 42665 -prefMapSize 258322 -appDir /usr/lib/firefox/browser {4be08548-6a12-4002-ac94-c81e1ee80c1e} 2713 true utility
             ├─3003 /usr/lib/firefox/firefox -contentproc -childID 3 -isForBrowser -prefsLen 42665 -prefMapSize 258322 -jsInitLen 234840 -parentBuildID 20240924171327 -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appDir /usr/lib/firefox/browser {12560405-e003-43bb-b030-2c3f5f5063dd} 2713 true tab
             ├─3062 /usr/lib/firefox/firefox -contentproc -childID 6 -isForBrowser -prefsLen 34692 -prefMapSize 258322 -jsInitLen 234840 -parentBuildID 20240924171327 -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appDir /usr/lib/firefox/browser {7d79e24a-2ccb-4c08-825c-e970b15f27b7} 2713 true tab
             ├─3251 /usr/lib/firefox/firefox -contentproc -childID 7 -isForBrowser -prefsLen 34789 -prefMapSize 258322 -jsInitLen 234840 -parentBuildID 20240924171327 -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appDir /usr/lib/firefox/browser {5414a35d-04d8-4bf1-bb4f-e36941c881d4} 2713 true tab
             ├─3382 /usr/lib/firefox/firefox -contentproc -parentBuildID 20240924171327 -prefsLen 42947 -prefMapSize 258322 -appDir /usr/lib/firefox/browser {7f90925b-2f53-4220-9706-b77fb8d250eb} 2713 true rdd
             └─3401 /usr/lib/firefox/firefox -contentproc -childID 8 -isForBrowser -prefsLen 34789 -prefMapSize 258322 -jsInitLen 234840 -parentBuildID 20240924171327 -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appDir /usr/lib/firefox/browser {08ac5815-76f1-4957-a6ce-8b3fea19bc50} 2713 true tab

 9月 26 20:29:02 pc systemd[646]: Starting Portal service...
 9月 26 20:29:02 pc systemd[646]: Started Portal service.

I think these firefox related processes should live in its own scope like app-firefox-12345.scope inside app.slice .

I don't know whether this issue belongs to x-d-p or x-d-p-g, so please tell me if its not a right place.

x-d-p: 1.18.4
x-d-p-g: 1.15.1