tree 064f98aee8736eaa106ad2df80815900f961caee
parent 92d5a993a665da8fa1a259cb832e8a3139b10a57
author Jason A. Donenfeld <Jason@zx2c4.com> 1632697545 -0600
committer Jason A. Donenfeld <Jason@zx2c4.com> 1632720469 +0000

unix: implement ppoll in terms of poll on Linux

Android's Bionic libc installs a seccomp filter that allows ppoll but
not poll. This has been fine for arm64, where we already implement poll
in terms of ppoll, but not the other architectures, such as amd64, which
runs on Chromebooks, and currently leads to crashes.

This commit implements poll in terms of ppoll on the remaining
architectures and makes this common code, so that everyone uses the more
modern syscall.

Change-Id: Ic01a32b5abe48ab53a2549f592a41561f1684c30
Reviewed-on: https://go-review.googlesource.com/c/sys/+/352310
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>