On Fri, Jul 14, 2017 at 11:58:49PM -0400, Ken Hornstein wrote: > - Call fork() in parent, and then use sigwait() to wait for SIGCHLD or SIGUSR1 > - In the child, perform library initialization. If it fails, print out > the error message on stderr and exit. If it succeeds send a SIGUSR1 to > the parent and then perform the rest of the daemonization steps as discussed > previously. > - If the parent gets a SIGCHLD, call waitpid() and exit with the exit code > that the child exited with. If the parent gets a SIGUSR1, then exit > normally.
A better design would be to just use a pipe and write the status to that. No signals necessary. Parents knows if the status read from the pipe is bad OR you get EOF, initialisation went wrong. Joerg
