The dma-buf fd from anon_inode can be shared across processes, but there is no way to set security permission for the fd. So this patch fix just to ignore private inode from security_file_receive.

Signed-off-by: Seung-Woo Kim sw0312.kim@samsung.com ---

If security like smack is enabled, the dmabuf fd can not be shared between processes via unix domain socket. I am not familiar with security, so I am not sure that this kind of patch can be acceptable.

Is there other option to share dmabuf fd via socket with security check?

Best Regards, - Seung-Woo Kim

--- security/security.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/security/security.c b/security/security.c index 730ac65..c57354c 100644 --- a/security/security.c +++ b/security/security.c @@ -810,6 +810,9 @@ int security_file_send_sigiotask(struct task_struct *tsk,

int security_file_receive(struct file *file) { + + if (unlikely(IS_PRIVATE(file->f_path.dentry->d_inode))) + return 0; return security_ops->file_receive(file); }