linux-kernel - Re: [PATCH] ima: cleanup the match

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Date:   Tue, 18 Dec 2018 01:33:48 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     zohar@...ux.ibm.com, linux-integrity@...r.kernel.org,
        James Morris James Morris <jmorris@...ei.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ima: cleanup the match_token policy code

On Mon, Dec 17, 2018 at 04:36:54PM -0800, Linus Torvalds wrote:
> On Mon, Dec 17, 2018 at 4:14 PM Mimi Zohar <zohar@...ux.ibm.com> wrote:
> >
> > Start the policy_tokens and the associated enumeration from zero,
> > simplifying the pt macro.
> 
> I applied this directly, since I decided to just commit my own "don't
> use negative Opt_err" patch for the test_and_set_bit() cases, and they
> kind of go together.
> 
> There's still a -1 in security/keys/encrypted-keys/encrypted.c, and
> there are also three cases of "Opt_error = -1" in the security layer.
> 
> All of which look pointless and wrong, but not actively buggy, so I'll
> leave them alone.

FWIW, that part of LSM shite is getting taken out and shot - LSM-related
preps in the beginning of mount API series are, at the moment, at
 fs/btrfs/ctree.h           |   4 -
 fs/btrfs/super.c           |  82 ++-------
 fs/namespace.c             |   9 +-
 fs/nfs/internal.h          |   2 +-
 fs/nfs/super.c             |  34 ++--
 fs/super.c                 |  23 +--
 include/linux/lsm_hooks.h  |  17 +-
 include/linux/security.h   |  82 ++-------
 security/security.c        |  39 +++--
 security/selinux/hooks.c   | 798 ++++++++++++++++++++++++++++++++------------------------------------------------------
 security/smack/smack_lsm.c | 359 +++++++++++++++------------------------
 11 files changed, 523 insertions(+), 926 deletions(-)
and unlike the original variant there's not much touched in security/*
further in the series...

No match_token() uses left in there after this part.