> On Apr 2, 2020, at 14:05, Duncan Exon Smith <dexonsm...@apple.com> wrote:
>
>> It looks like the following bots assigned to you started failing recently:
>
> I agree the bots should be fixed, but...
>
>> I strongly suspect this is due to the fact that your builder is running as
>> root. Libc++'s filesystem tests are known to fail when run as root, because
>> some of them need to check for failure to access some files for which
>> there's no permission. This doesn't seem to work when run as root.
>
> It seems like these tests could have a line like:
> ```
> REQUIRES: -user=root
> ```
> and libcxx's lit target could export a `user=root` feature when tests were
> being run as root. WDYT?
>
> WDYT?
>
I think you mean `// UNSUPPORTED: -user=root`? Yes, I think it would make
sense. Either that or actually spend the time to make them work as root.
FWIW, I think the root cause of the issue is that "traverse" permissions in
directories are not honoured when run as root:
root $ d=$(mktemp -d)
root $ touch $d/foo
root $ chmod 000 $d
root $ stat $d/foo
16777221 234259215 -rw-r--r-- 1 root wheel 0 0 <...>
When I would expect:
ldionne $ d=$(mktemp -d)
ldionne $ touch $d/foo
ldionne $ chmod 000 $d
ldionne $ stat $d/foo
stat: <...>/tmp.JoY6Ixmo/foo: stat: Permission denied
Does that make sense? I didn't know 'root' had a free pass like that.
Louis
_______________________________________________
linaro-toolchain mailing list
linaro-toolchain@lists.linaro.org
https://lists.linaro.org/mailman/listinfo/linaro-toolchain
