tree 5965bb5e4627effc7ff3eeb2106fa284fb6f659c
parent 6054fef17f2eedf3ef4825b6ca5b97e2ecf53bd6
author Elias Naur <elias.naur@gmail.com> 1537605005 +0200
committer Elias Naur <elias.naur@gmail.com> 1537808931 +0000

syscall: replace lstat, lchown, stat to please Android O

Implement Lstat with fstatat and Lchown with Fchownat on
linux/amd64, linux/arm and linux/386. Furthermore, implement Stat
with fstatat on linux/arm and linux/386. Linux/arm64 already had
similar replacements.

The fstatat and fchownat system calls were added in kernel 2.6.16,
which is before the Go minimum, 2.6.23.

The three syscalls then match the android bionic implementation
and avoids the Android O seccomp filter.

Fixes #27797

Change-Id: I07fd5506955d454a1a660fef5af0e1ac1ecb0959
Reviewed-on: https://go-review.googlesource.com/136795
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>