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unix: check Faccessat2 returning EPERM in Faccessat

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Some systems (e.g. the linux-arm and linux-arm64-packet builders) return
EPERM instead of ENOSYS on unimplemented syscalls. Fall back to the
existing glibc-like implementation in Faccessat in this case as well.

This fixes tests on the linux-arm and linux-arm64-packet builders after
CL 246537.

Change-Id: I7d7598f9694a2db19bd17e79f333d5de3a31c6e2
Reviewed-on: https://go-review.googlesource.com/c/sys/+/246817
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser
2020-08-05 09:06:28 +02:00
committed by Tobias Klauser
parent fcf3340312
commit a37d78b922
1 changed files with 1 additions and 1 deletions
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2
unix/syscall_linux.go
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@@ -1972,7 +1972,7 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
return faccessat(dirfd, path, mode)
}
if err := Faccessat2(dirfd, path, mode, flags); err != ENOSYS {
if err := Faccessat2(dirfd, path, mode, flags); err != ENOSYS && err != EPERM {
return err
}