From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933276AbWFZXH0 (ORCPT ); Mon, 26 Jun 2006 19:07:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933274AbWFZWjm (ORCPT ); Mon, 26 Jun 2006 18:39:42 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:22711 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933275AbWFZWjj (ORCPT ); Mon, 26 Jun 2006 18:39:39 -0400 From: Nigel Cunningham Subject: [Suspend2][ 10/35] [Suspend2] Parse filewriter signature. Date: Tue, 27 Jun 2006 08:39:37 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223935.4685.53069.stgit@nigel.suspend2.net> In-Reply-To: <20060626223902.4685.52543.stgit@nigel.suspend2.net> References: <20060626223902.4685.52543.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 Given a pointer to what we expect to be a filewriter signature, return whether it is unrecognised (-1), a file without an image (0) or a file with an image to resume from (1). Signed-off-by: Nigel Cunningham kernel/power/suspend_file.c | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c index 6851977..d5f0310 100644 --- a/kernel/power/suspend_file.c +++ b/kernel/power/suspend_file.c @@ -365,3 +365,23 @@ cleanup: target_storage_available = 0; } +int parse_signature(struct filewriter_header *header) +{ + int have_image = !memcmp(HaveImage, header->sig, sizeof(HaveImage) - 1); + int no_image_header = !memcmp(NoImage, header->sig, sizeof(NoImage) - 1); + + if (no_image_header) + return 0; + + if (!have_image) + return -1; + + if (header->resumed_before) + set_suspend_state(SUSPEND_RESUMED_BEFORE); + else + clear_suspend_state(SUSPEND_RESUMED_BEFORE); + + target_header_start = header->first_header_block; + return 1; +} + -- Nigel Cunningham nigel at suspend2 dot net