From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932214AbWF0Ex6 (ORCPT ); Tue, 27 Jun 2006 00:53:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932206AbWF0ElO (ORCPT ); Tue, 27 Jun 2006 00:41:14 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:35803 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933409AbWF0Ekd (ORCPT ); Tue, 27 Jun 2006 00:40:33 -0400 From: Nigel Cunningham Subject: [Suspend2][ 02/13] [Suspend2] Receive storage manager message Date: Tue, 27 Jun 2006 14:40:32 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060627044031.14778.21499.stgit@nigel.suspend2.net> In-Reply-To: <20060627044025.14778.17719.stgit@nigel.suspend2.net> References: <20060627044025.14778.17719.stgit@nigel.suspend2.net> Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit User-Agent: StGIT/0.9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Routine called when netlink messages are received. Signed-off-by: Nigel Cunningham kernel/power/storage.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 38 insertions(+), 0 deletions(-) diff --git a/kernel/power/storage.c b/kernel/power/storage.c index 91b24a6..b66efe2 100644 --- a/kernel/power/storage.c +++ b/kernel/power/storage.c @@ -34,3 +34,41 @@ static int usm_prepare_count = 0; static int storage_manager_last_action = 0; static int storage_manager_action = 0; +static int usm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) +{ + int type; + int *data; + + type = nlh->nlmsg_type; + + /* A control message: ignore them */ + if (type < NETLINK_MSG_BASE) + return 0; + + /* Unknown message: reply with EINVAL */ + if (type >= USM_MSG_MAX) + return -EINVAL; + + /* All operations require privileges, even GET */ + if (security_netlink_recv(skb)) + return -EPERM; + + /* Only allow one task to receive NOFREEZE privileges */ + if (type == NETLINK_MSG_NOFREEZE_ME && usm_helper_data.pid != -1) + return -EBUSY; + + data = (int*)NLMSG_DATA(nlh); + + switch (type) { + case USM_MSG_SUCCESS: + case USM_MSG_FAILED: + message_received = type; + complete(&usm_helper_data.wait_for_process); + break; + default: + printk("Storage manager doesn't recognise message %d.\n", type); + } + + return 1; +} + -- Nigel Cunningham nigel at suspend2 dot net