nixos/wireless: fix failure with no interfaces #104722
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This resolves issue NixOS#101963. When the service is started and no interface is ready yet, wpa_supplicant is being exec'd with no `-i` flags, thus failing. Once the interfaces are ready, the udev rule would fire but wouldn't restart the unit because it wasn't currently running (see systemctl(1) try-restart). The solution is to exit (with a clear error message) but always restart wpa_supplicant when the interfaces are modified.
ofborg
bot
added
6.topic: nixos
doronbehar
approved these changes
Dec 14, 2020
| @@ -261,7 +266,7 @@ in { | |||
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| # Restart wpa_supplicant when a wlan device appears or disappears. | |||
| services.udev.extraRules = '' | |||
| ACTION=="add|remove", SUBSYSTEM=="net", ENV{DEVTYPE}=="wlan", RUN+="/run/current-system/systemd/bin/systemctl try-restart wpa_supplicant.service" | |||
| ACTION=="add|remove", SUBSYSTEM=="net", ENV{DEVTYPE}=="wlan", RUN+="/run/current-system/systemd/bin/systemctl restart wpa_supplicant.service" | |||
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Makes sense according to:
https://www.freedesktop.org/software/systemd/man/systemctl.html#try-restart%20PATTERN%E2%80%A6
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Thank you. I'm merging this because the problem is starting to get annoying. |
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Backport to 20.09: 645b8a3 |
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Motivation for this change
This resolves issue #101963.
When the service is started and no interface is ready yet, wpa_supplicant
is being exec'd with no
-iflags, thus failing. Once the interfacesare ready, the udev rule would fire but wouldn't restart the unit because
it wasn't currently running (see systemctl(1) try-restart).
The solution is to exit (with a clear error message) but always restart
wpa_supplicant when the interfaces are modified.
Things done