Re: [RFC v3 01/10] lsm: add security_socket_closed()

[Samir Bellabes <sam@synack.fr>]

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> writes:

> Samir Bellabes wrote:
>> Allow a module to update security informations when a socket is closed.
> Is security_inode_free() too late for doing it?
>
> static void ccs_inode_free_security(struct inode *inode)
> {
>         if (inode->i_sb && inode->i_sb->s_magic == SOCKFS_MAGIC)
>                 ccs_update_socket_tag(inode, 0);
> }

I don't think it's too late.
But in sock_close() we are sure to deal with a inode which is a socket.

In ccs_inode_free_security(), we need to add small to check if the inode
is a socket or something else.

sam