[Bug 231791] daemon utility doesn't redirect SIGTERM to child process

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231791

            Bug ID: 231791
           Summary: daemon utility doesn't redirect SIGTERM to child
                    process
           Product: Base System
           Version: 11.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: kuseni at gmail.com

daemon utility doesn't redirect SIGTERM to child process. I think, the problem
is in the confused handlers of SIGTERM and SIGCHLD signals, see lines 207-215
of https://github.com/freebsd/freebsd/blob/master/usr.sbin/daemon/daemon.c :

memset(&act_term, 0, sizeof(act_term));
act_term.sa_handler = handle_term;
sigemptyset(&act_term.sa_mask);
sigaddset(&act_term.sa_mask, SIGCHLD);

memset(&act_chld, 0, sizeof(act_chld));
act_chld.sa_handler = handle_chld;
sigemptyset(&act_chld.sa_mask);
sigaddset(&act_chld.sa_mask, SIGTERM);

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