linux-kernel - Re: [RESEND PATCH] Smack: ignore private inode for smack_file

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Date:	Mon, 11 May 2015 17:12:32 +0900
From:	Seung-Woo Kim <sw0312.kim@...sung.com>
To:	Seung-Woo Kim <sw0312.kim@...sung.com>
Cc:	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, casey@...aufler-ca.com,
	sumit.semwal@...aro.org, linaro-mm-sig@...ts.linaro.org
Subject: Re: [RESEND PATCH] Smack: ignore private inode for smack_file_receive

Ping?

On 2015Гт 04Пљ 17РЯ 15:25, Seung-Woo Kim wrote:
> The dmabuf fd can be shared between processes via unix domain
> socket. The file of dmabuf fd is came from anon_inode. The inode
> has no set and get xattr operations, so it can not be shared
> between processes with smack. This patch fixes just to ignore
> private inode including anon_inode for smack_file_receive.
> 
> Signed-off-by: Seung-Woo Kim <sw0312.kim@...sung.com>
> ---
> I think there was some issue sending my previous mail, so I resend patch again.
> ---
>  security/smack/smack_lsm.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
> index 69fdc38..d1bb411 100644
> --- a/security/smack/smack_lsm.c
> +++ b/security/smack/smack_lsm.c
> @@ -1673,6 +1673,9 @@ static int smack_file_receive(struct file *file)
>  	struct smk_audit_info ad;
>  	struct inode *inode = file_inode(file);
>  
> +	if (unlikely(IS_PRIVATE(inode)))
> +		return 0;
> +
>  	smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
>  	smk_ad_setfield_u_fs_path(&ad, file->f_path);
>  	/*
> 

-- 
Seung-Woo Kim
Samsung Software R&D Center
--

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