linux-kernel - Re: [RFC PATCH v2 1/2] integrity, KEYS: add a reference to platform keyring

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Message-ID: <CACPcB9fQUNiD8UEVDa+bU67PZSOkckwhwD00Qvu4m3G0JmqqHQ@mail.gmail.com>
Date:   Tue, 15 Jan 2019 23:47:39 +0800
From:   Kairui Song <kasong@...hat.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>
Cc:     linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        jwboyer@...oraproject.org, keyrings@...r.kernel.org,
        jmorris@...ei.org, serge@...lyn.com, bauerman@...ux.ibm.com,
        Eric Biggers <ebiggers@...gle.com>, nayna@...ux.ibm.com,
        Dave Young <dyoung@...hat.com>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        kexec@...ts.infradead.org
Subject: Re: [RFC PATCH v2 1/2] integrity, KEYS: add a reference to platform keyring

On Tue, Jan 15, 2019 at 11:34 PM Mimi Zohar <zohar@...ux.ibm.com> wrote:
>
> On Tue, 2019-01-15 at 17:45 +0800, Kairui Song wrote:
> [snip]
>
> > diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
> > index f45d6edecf99..bfabc2a8111d 100644
> > --- a/security/integrity/digsig.c
> > +++ b/security/integrity/digsig.c
> > @@ -89,6 +89,12 @@ static int __integrity_init_keyring(const unsigned int id, key_perm_t perm,
> >               keyring[id] = NULL;
> >       }
> >
> > +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
> > +     if (id == INTEGRITY_KEYRING_PLATFORM) {
> > +             set_platform_trusted_keys(keyring[id]);
> > +     }
> > +#endif
> > +
> >       return err;
> >  }
> >
>
> Any reason for setting it here as opposed to in the caller
> platform_keyring_init()?
>
> Mimi
>

Yes, "keyring" is static so unless I expose it to other files, it is
only accessible here. And I think there should be no problem to put
the set_platform_trusted_keys here.

-- 
Best Regards,
Kairui Song