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

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Date:	Tue, 6 Nov 2012 17:23:06 -0500
From:	Eric Paris <eparis@...isplace.org>
To:	Casey Schaufler <casey@...aufler-ca.com>
Cc:	Jarkko Sakkinen <jarkko.sakkinen@....fi>,
	James Morris <james.l.morris@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	LSM List <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH] smack: SMACK_MAGIC to include/uapi/linux/magic.h

It looks like smack_lsm.c includes linux/magic.h, but smackfs.c
doesn't...   Seems like they should have included linux/magic.h in the
same header they removed the definition from....

On Tue, Nov 6, 2012 at 4:59 PM, Casey Schaufler <casey@...aufler-ca.com> wrote:
> 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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