systemd service unit fixes

[abeltrano]

Type

• Bug fix
• Feature addition
• Feature update
• Documentation
• Build Infrastructure

Side Effects

• Breaking change
• Non-functional change

Goals

• Ensure installed systemd unit files work properly.

Technical Details

• During install step, create the empty directory structure for the hostapd control file specific in the example configuration file (eg. the "run state" directory).
• Change hostapd service type from forking to simple and remove extra corresponding service lines (PIDFile) and daemon arguments (-B, -P).
• Change netremote-server unit ExecStartfromsbintobin` where it's actually installed.

Test Results

• Performed the following commands:
  • cmake --build /home/shadowfax/src/microsoft/netremote-cmake/out/build/dev-linux --parallel 14 --target install
  • cd /etc/systemd/system
  • sudo ln -s /home/shadowfax/src/microsoft/netremote-cmake/out/build/dev-linux/install/etc/systemd/system/hostapd@.service
  • sudo ln -s /home/shadowfax/src/microsoft/netremote-cmake/out/build/dev-linux/install/etc/systemd/system/netremote-server.service
  • sudo systemctl daemon-reload
  • sudo systemctl enable hostapd@wlan0
  • sudo systemctl start hostapd@wlan0
  • sudo systemctl status hostapd@wlan0.service netremote-server.service

Verfidied below output showed both services as active/running:

● hostapd@wlan0.service - Hostapd Daemon
     Loaded: loaded (/etc/systemd/system/hostapd@wlan0.service; enabled; preset: enabled)
     Active: active (running) since Tue 2024-01-16 20:58:43 MST; 12min ago
   Main PID: 18192 (hostapd)
      Tasks: 1 (limit: 38513)
     Memory: 1.0M
     CGroup: /system.slice/system-hostapd.slice/hostapd@wlan0.service
             └─18192 /home/shadowfax/src/microsoft/netremote-cmake/out/install/dev-linux/sbin/hostapd -i wlan0 /home/shadowfax/src/microsoft/netremote-cmake/out/install/dev-linux/etc/hostapd/hostapd-wlan0.conf

Jan 16 20:58:43 foxmulder systemd[1]: hostapd@wlan0.service: Changed failed -> running
Jan 16 20:58:43 foxmulder systemd[1]: hostapd@wlan0.service: Job 1452 hostapd@wlan0.service/start finished, result=done
Jan 16 20:58:43 foxmulder systemd[1]: Started hostapd@wlan0.service - Hostapd Daemon.
Jan 16 20:58:43 foxmulder (hostapd)[18192]: hostapd@wlan0.service: Executing: /home/shadowfax/src/microsoft/netremote-cmake/out/install/dev-linux/sbin/hostapd -i wlan0 /home/shadowfax/src/microsoft/netremote-cmake/out/install/dev-linux/etc/hostapd/hostapd-wla>
Jan 16 20:58:43 foxmulder hostapd[18192]: wlan0: interface state UNINITIALIZED->ENABLED
Jan 16 20:58:43 foxmulder hostapd[18192]: wlan0: AP-ENABLED
Jan 16 21:02:28 foxmulder systemd[1]: hostapd@wlan0.service: Current command vanished from the unit file.
...

● netremote-server.service - Netremote Daemon
     Loaded: loaded (/etc/systemd/system/netremote-server.service; enabled; preset: enabled)
     Active: active (running) since Tue 2024-01-16 20:36:17 MST; 34min ago
   Main PID: 6373 (netremote-serve)
      Tasks: 18 (limit: 38513)
     Memory: 5.3M
     CGroup: /system.slice/netremote-server.service
             └─6373 /home/shadowfax/src/microsoft/netremote-cmake/out/install/dev-linux/bin/netremote-server

Jan 16 20:36:17 foxmulder systemd[1]: Started netremote-server.service - Netremote Daemon.
...

Reviewer Focus

• Consider whether this would work for other development use cases.

Future Work

• Create a cmake configure preset that sets installDir like a typical installation (eg. /).

Checklist

• Build target all compiles cleanly.
• clang-format and clang-tidy deltas produced no new output.
• Newly added functions include doxygen-style comment block.