* Re: [PATCH] Smack: ignore private inode for smack_file_receive
[not found] <1429247691-495-1-git-send-email-sw0312.kim@samsung.com>
@ 2015-05-11 20:32 ` Casey Schaufler
0 siblings, 0 replies; only message in thread
From: Casey Schaufler @ 2015-05-11 20:32 UTC (permalink / raw)
To: Seung-Woo Kim, james.l.morris, serge, linux-security-module,
linux-kernel
Cc: sds, sumit.semwal, linaro-mm-sig, jy0922.shim, Casey Schaufler
On 4/16/2015 10:14 PM, 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@samsung.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Applied to git@github.com:cschaufler/smack-next.git smack-for-4.2
> ---
> 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);
> /*
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