Re: [PATCH v2 22/35] vfs: don't open real

From: Vivek Goyal
Date: Tue May 15 2018 - 16:42:16 EST


On Mon, May 14, 2018 at 09:58:03AM -0400, Vivek Goyal wrote:

[..]
> Talked to Dan and he mentioned that he was trying to test entrypoint
> failure (and not exec failure) and that's whey he might have allowed exec
> to mounter.
>
> I think that current entrypoint test's expectations are wrong.
> User process sees overlay inode lablel which is rwx_t and that means
> overlay layer will allow entrypoint into that executable. This will be the
> behavior on a normal file system where underlying file's label will be
> completely overridden by context=.
>
> So in my opinion, we should modify testsuite and not run this test with
> context= mounts.

Miklos, now a fix has been merged to the tests so that test passes both with
current kernels and proposed changes.

https://github.com/SELinuxProject/selinux-testsuite/pull/36

Thanks Dan Walsh, Stephen Smalley and Paul More.

Vivek