Re: [PATCH 0/5 v2] nfs-utils: provide audit-logging of NFSv4 access

[bfields@fieldses.org (J. Bruce Fields)]

I've gotten requests for similar functionality, and intended to
implement it using directory notifications on /proc/fs/nfsd/clients.

But this is another way to do it that I hadn't thought of.  That's
interesting.  I haven't thought about the relative advantages or
disadvantages.

--b.

On Mon, Mar 01, 2021 at 01:17:15PM +1100, NeilBrown wrote:
> V1 of this series didn't update the usage() message for mountd,
> and omited the required ':' after the 'T' sort-option.  This 
> series fixes those two omissions.
> 
> Original series comment:
> 
> When NFSv3 is used mountd provides logs of successful and failed mount
> attempts which can be used for auditing.
> When NFSv4 is used there are no such logs as NFSv4 does not have a
> distinct "mount" request.
> 
> However mountd still knows about which filesysytems are being accessed
> from which clients, and can actually provide more reliable logs than it
> currently does, though they must be more verbose - with periodic "is
> being accessed" message replacing a single "was mounted" message.
> 
> This series adds support for that logging, and adds some related
> improvements to make the logs as useful as possible.
> 
> NeilBrown
> 
> ---
> 
> NeilBrown (5):
>       mountd: reject unknown client IP when !use_ipaddr.
>       mountd: Don't proactively add export info when fh info is requested.
>       mountd: add logging for authentication results for accesses.
>       mountd: add --cache-use-ipaddr option to force use_ipaddr
>       mountd: make default ttl settable by option
> 
> 
>  support/export/auth.c      |  4 +++
>  support/export/cache.c     | 32 +++++++++++------
>  support/export/v4root.c    |  3 +-
>  support/include/exportfs.h |  3 +-
>  support/nfs/exports.c      |  4 ++-
>  utils/mountd/mountd.c      | 30 +++++++++++++++-
>  utils/mountd/mountd.man    | 70 ++++++++++++++++++++++++++++++++++++++
>  7 files changed, 131 insertions(+), 15 deletions(-)
> 
> --
> Signature