linux-kernel - Re: [PATCH] smack: SMACK_MAGIC to include/uapi/linux/magic.h

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Message-ID: <50998834.5030407@schaufler-ca.com>
Date:	Tue, 06 Nov 2012 13:59:16 -0800
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@....fi>
CC:	James Morris <james.l.morris@...cle.com>,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH] smack: SMACK_MAGIC to include/uapi/linux/magic.h

On 11/6/2012 12:17 AM, Jarkko Sakkinen wrote:
> SMACK_MAGIC moved to a proper place for easy user space access
> (i.e. libsmack).
>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@....fi>
> ---
>  include/uapi/linux/magic.h |    1 +
>  security/smack/smack.h     |    5 -----
>  2 files changed, 1 insertion(+), 5 deletions(-)

Will security/smack/smack_lsm.c and security/smack/smackfs.c
compile after this change?

>
> diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
> index e15192c..12735ad 100644
> --- a/include/uapi/linux/magic.h
> +++ b/include/uapi/linux/magic.h
> @@ -11,6 +11,7 @@
>  #define DEBUGFS_MAGIC          0x64626720
>  #define SECURITYFS_MAGIC	0x73636673
>  #define SELINUX_MAGIC		0xf97cff8c
> +#define SMACK_MAGIC		0x43415d53	/* "SMAC" */
>  #define RAMFS_MAGIC		0x858458f6	/* some random number */
>  #define TMPFS_MAGIC		0x01021994
>  #define HUGETLBFS_MAGIC 	0x958458f6	/* some random number */
> diff --git a/security/smack/smack.h b/security/smack/smack.h
> index 99b3612..8ad3095 100644
> --- a/security/smack/smack.h
> +++ b/security/smack/smack.h
> @@ -149,11 +149,6 @@ struct smack_known {
>  #define SMACK_CIPSO_SOCKET	1
>  
>  /*
> - * smackfs magic number
> - */
> -#define SMACK_MAGIC	0x43415d53 /* "SMAC" */
> -
> -/*
>   * CIPSO defaults.
>   */
>  #define SMACK_CIPSO_DOI_DEFAULT		3	/* Historical */

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