Re: [PATCH] fix up security_socket_getpeersec_* documentation

[Xiaolan Zhang]

Acked-by: Catherine Zhang <cxzhang@xxxxxxxxxxxxxx>

Catherine

serue@xxxxxxxxxxxxxxxxxxxxxxx wrote on 03/28/2006 08:02:53 AM:

> Update the security_socket_peersec documentation in
> include/linux/security.h.  security_socket_peersec has been split
> into two functions - _stream and _dgram, with new capabilities.
> 
> Signed-off-by: Serge Hallyn <serue@xxxxxxxxxx>
> 
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -782,9 +782,11 @@ struct swap_info_struct;
>   *   incoming sk_buff @skb has been associated with a particular 
socket, @sk.
>   *   @sk contains the sock (not socket) associated with the incoming 
sk_buff.
>   *   @skb contains the incoming network data.
> - * @socket_getpeersec:
> + * @socket_getpeersec_stream:
>   *   This hook allows the security module to provide peer socket 
security
> - *   state to userspace via getsockopt SO_GETPEERSEC.
> + *   state for unix or connected tcp sockets to userspace via 
getsockopt
> + *   SO_GETPEERSEC.  For tcp sockets this can be meaningful if the
> + *   socket is associated with an ipsec SA.
>   *   @sock is the local socket.
>   *   @optval userspace memory where the security state is to be copied.
>   *   @optlen userspace int where the module should copy the actual 
length
> @@ -793,6 +795,17 @@ struct swap_info_struct;
>   *   by the caller.
>   *   Return 0 if all is well, otherwise, typical getsockopt return
>   *   values.
> + * @socket_getpeersec_dgram:
> + *    This hook allows the security module to provide peer socket 
security
> + *    state for udp sockets on a per-packet basis to userspace via
> + *    getsockopt SO_GETPEERSEC.  The application must first have 
indicated
> + *    the IP_PASSSEC option via getsockopt.  It can then retrieve the
> + *    security state returned by this hook for a packet via the 
SCM_SECURITY
> + *    ancillary message type.
> + *    @skb is the skbuff for the packet being queried
> + *    @secdata is a pointer to a buffer in which to copy the security 
data
> + *    @seclen is the maximum length for @secdata
> + *    Return 0 on success, error on failure.
>   * @sk_alloc_security:
>   *      Allocate and attach a security structure to the 
> sk->sk_security field,
>   *      which is used to copy security attributes between local 
> stream sockets.

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