[Bug 250386] procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum) doesn't work on 12.2-STABLE
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bugzilla-noreply at freebsd.org
Fri Oct 16 03:24:50 UTC 2020
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250386
Bug ID: 250386
Summary: procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum) doesn't
work on 12.2-STABLE
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: ports-bugs at FreeBSD.org
Reporter: yuri at freebsd.org
In the child process I have these lines:
> int signum = SIGKILL;
> if (::procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum) == -1)
> exit(1);
Parent launches this process, it loops, and then the parent exits.
The child process stays despite the above lines.
I expect it to receive SIGKILL and die once the parent exists, as per
procctl(2):
> PROC_PDEATHSIG_CTL Request the delivery of a signal when the parent of
> the calling process exits. idtype must be P_PID and
> id must be the either caller's pid or zero, with no
> difference in effect. The value is cleared for
> child processes and when executing set-user-ID or
> set-group-ID binaries. arg must point to a value of
> type int indicating the signal that should be
> delivered to the caller. Use zero to cancel a
> previously requested signal delivery.
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