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Date: Tue, 23 Feb 2021 09:26:55 -0800
From: enh <>
Cc: Josh Gao <>
Subject: pidfd

Android's libc (bionic) has some built-in fd tracking:

which means (we realize after tracking down a leak of pidfds for the first
time) we have a stronger incentive than others to add libc wrappers for
Linux system calls that deal in fds.

to this end, we're looking at adding a <sys/pidfd.h> that exposes
[appropriately wrapped] pidfd_getfd/pidfd_open plus pidfd_send_signal since
-- although there's no need for that -- it would seem odd to expose two but
say "use syscall() for the third".

anyway, i thought i'd bring this up in case anyone else is planning on
exposing these in a different way (in a different header in particular), so
we can try to avoid unnecessary variance and configure cruft :-)

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