systemd.service(5)’s documentation of `ExecCondition=` uses “failed” with respect to the unit active state. In particular the unit won’t be considered failed when `ExecCondition=`’s command exits with a status of 1 through 254 (inclusive). It will however, when it exits with 255 or abnormally (e.g. timeout, killed by a signal, etc.). The table “Defined $SERVICE_RESULT values” in systemd.exec(5) uses “failed” however rather with respect to the condition. Tests seem to have shown that, if the exit status of the `ExecCondition=` command is one of 1 through 254 (inclusive), `$SERVICE_RESULT` will be `exec-condition`, if it is 255, `$SERVICE_RESULT` will be `exit-code` (but `$EXIT_CODE` and `$EXIT_STATUS` will be empty or unset), if it’s killed because of `SIGKILL`, `$SERVICE_RESULT` will `signal` and if it times out, `$SERVICE_RESULT` will be `timeout`. This commit clarifies the table at least for the case of an exit status of 1 through 254 (inclusive). The others (signal, timeout and 255 are probably also still ambiguous (e.g. `signal` uses “A service process”, which could be considered as the actual service process only). Signed-off-by: Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>
System and Service Manager
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