linux-kernel - Re: [RESEND][PATCH] Documentation: added order requirement for ima

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Date:   Fri, 28 Jan 2022 09:33:55 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>,
        "Guozihua (Scott)" <guozihua@...wei.com>,
        Jonathan Corbet <corbet@....net>
Cc:     "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        wangweiyang <wangweiyang2@...wei.com>,
        Xiujianfeng <xiujianfeng@...wei.com>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>
Subject: Re: [RESEND][PATCH] Documentation: added order requirement for
 ima_hash=

On Fri, 2022-01-28 at 10:24 +0000, Roberto Sassu wrote:
> > From: Mimi Zohar [mailto:zohar@...ux.ibm.com]
> > Sent: Wednesday, January 26, 2022 1:48 PM
> > On Wed, 2022-01-26 at 15:41 +0800, Guozihua (Scott) wrote:
> > >
> > >
> > > The main issue lies in ima_template_desc_current called by hash_setup,
> > > which does not just read ima_template global variable, but also tries to
> > > set it if that hasn't been done already. Causing ima_template_setup to quit.
> > 
> > Right, which calls ima_init_template_list().  So part of the solution
> > could be to conditionally call ima_init_template_list()
> > in ima_template_setup().
> > 
> > -       if (ima_template)
> > -               return 1;
> > -
> > -       ima_init_template_list();
> > +       if (!ima_template
> > +               ima_init_template_list();
> 
> 
> is it still necessary to call ima_init_template_list() in
> template_setup()? I saw it is called in init_ima().

All of these options are at __setup().

thanks,

Mimi