Re: [PATCH v15 0/4] SELinux support for anonymous inodes and UFFD

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On Fri, Jan 8, 2021 at 5:22 PM Lokesh Gidra <lokeshgidra@xxxxxxxxxx> wrote:
>
> Userfaultfd in unprivileged contexts could be potentially very
> useful. We'd like to harden userfaultfd to make such unprivileged use
> less risky. This patch series allows SELinux to manage userfaultfd
> file descriptors and in the future, other kinds of
> anonymous-inode-based file descriptor.

...

> Daniel Colascione (3):
>   fs: add LSM-supporting anon-inode interface
>   selinux: teach SELinux about anonymous inodes
>   userfaultfd: use secure anon inodes for userfaultfd
>
> Lokesh Gidra (1):
>   security: add inode_init_security_anon() LSM hook
>
>  fs/anon_inodes.c                    | 150 ++++++++++++++++++++--------
>  fs/libfs.c                          |   5 -
>  fs/userfaultfd.c                    |  19 ++--
>  include/linux/anon_inodes.h         |   5 +
>  include/linux/lsm_hook_defs.h       |   2 +
>  include/linux/lsm_hooks.h           |   9 ++
>  include/linux/security.h            |  10 ++
>  security/security.c                 |   8 ++
>  security/selinux/hooks.c            |  57 +++++++++++
>  security/selinux/include/classmap.h |   2 +
>  10 files changed, 213 insertions(+), 54 deletions(-)

With several rounds of reviews done and the corresponding SELinux test
suite looking close to being ready I think it makes sense to merge
this via the SELinux tree.  VFS folks, if you have any comments or
objections please let me know soon.  If I don't hear anything within
the next day or two I'll go ahead and merge this for linux-next.

Thanks.

-- 
paul moore
www.paul-moore.com




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