linux-kernel - Re: [RFC v2 2/7] keys: initialize root uid and session keyrings early

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Message-ID: <CA+5PVA71WegBSBbgZDBZopORkAMN9G8i2MXHmAGdpiSjWzo9RQ@mail.gmail.com>
Date:	Thu, 16 Aug 2012 14:26:37 -0400
From:	Josh Boyer <jwboyer@...il.com>
To:	Dmitry Kasatkin <dmitry.kasatkin@...el.com>
Cc:	zohar@...ux.vnet.ibm.com, jmorris@...ei.org, rusty@...tcorp.com.au,
	dhowells@...hat.com, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, Mimi Zohar <zohar@...ibm.com>
Subject: Re: [RFC v2 2/7] keys: initialize root uid and session keyrings early

On Wed, Aug 15, 2012 at 2:43 PM, Dmitry Kasatkin
<dmitry.kasatkin@...el.com> wrote:
> From: Mimi Zohar <zohar@...ux.vnet.ibm.com>
>
> In order to create the integrity keyrings (eg. _evm, _ima, _modules),
> root's uid and session keyrings need to be initialized early.
>
> Signed-off-by: Mimi Zohar <zohar@...ibm.com>
> ---
>  security/keys/Makefile       |    1 +
>  security/keys/root_keyring.c |   18 ++++++++++++++++++
>  2 files changed, 19 insertions(+)
>  create mode 100644 security/keys/root_keyring.c
>
> diff --git a/security/keys/Makefile b/security/keys/Makefile
> index 504aaa0..c93ce8d 100644
> --- a/security/keys/Makefile
> +++ b/security/keys/Makefile
> @@ -18,6 +18,7 @@ obj-y := \
>  obj-$(CONFIG_KEYS_COMPAT) += compat.o
>  obj-$(CONFIG_PROC_FS) += proc.o
>  obj-$(CONFIG_SYSCTL) += sysctl.o
> +obj-$(CONFIG_INTEGRITY_SIGNATURE) += root_keyring.o
>
>  #
>  # Key types
> diff --git a/security/keys/root_keyring.c b/security/keys/root_keyring.c
> new file mode 100644
> index 0000000..f6662eb
> --- /dev/null
> +++ b/security/keys/root_keyring.c
> @@ -0,0 +1,18 @@
> +/*
> + * Copyright (C) 2012 IBM Corporation
> + *
> + * Author:
> + * Mimi Zohar <zohar@...ibm.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, version 2 of the License.
> + */
> +
> +#include "internal.h"
> +static int __init init_root_keyring(void)
> +{
> +       return install_user_keyrings();
> +}
> +
> +late_initcall(init_root_keyring);
> --

Why is this in an entirely new file instead of just being added to
process_keys.c ?

josh
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