Roland Mainz wrote:
> How does SMF detect that a child process failed ?
svc.startd(1M) says that a contract-model service has failed if:
o all processes in the service exit
o any processes in the service produce a core dump
o a process outside the service sends a service process a
fatal signal (for example, an administrator terminates
a service process with the pkill command)
> Note that any exit
> code from 0 ... 255 is _valid_ for shell scripts and applications and
> killing whole services just because a child process returned a non-zero
> exit code may not be a good idea (I hope it's not implemented this way).
I don't believe it is.
> The same applies to SIGTERM and other signals - shell scripts sometimes
> employ signals for communication and that includes even stuff like
> SIGTERM and SIGHUP and the child processes may not be cleaned-up
> immediately (for example if there are other events to process the
> reaping of dead children may need some time).
Here it's mixed. Note that the rule above talks about a process outside
the service (I presume that means in a different contract) sending a
fatal signal (I presume that means that it's not being caught).
