From patchwork Sun Jan 5 07:27:37 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qiao Nuohan X-Patchwork-Id: 306926 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id C14782C00A0 for ; Sun, 5 Jan 2014 19:16:20 +1100 (EST) Received: from localhost ([::1]:57009 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzisc-00040q-KB for incoming@patchwork.ozlabs.org; Sun, 05 Jan 2014 03:16:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39510) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VzirX-0002su-Se for qemu-devel@nongnu.org; Sun, 05 Jan 2014 03:15:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VzirQ-0007RL-Uj for qemu-devel@nongnu.org; Sun, 05 Jan 2014 03:15:11 -0500 Received: from fgwmail8.fujitsu.co.jp ([192.51.44.38]:35782) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VzirQ-0007NX-A4 for qemu-devel@nongnu.org; Sun, 05 Jan 2014 03:15:04 -0500 Received: from fgwmail5.fujitsu.co.jp (fgwmail5.fujitsu.co.jp [192.51.44.35]) by fgwmail8.fujitsu.co.jp (Postfix) with ESMTP id 414A2179397F for ; Sun, 5 Jan 2014 16:28:43 +0900 (JST) Received: from m2.gw.fujitsu.co.jp (unknown [10.0.50.72]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 664603EE1D9 for ; Sun, 5 Jan 2014 16:28:42 +0900 (JST) Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 529E245DE4E for ; Sun, 5 Jan 2014 16:28:42 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.nic.fujitsu.com [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 1E19545DE4C for ; Sun, 5 Jan 2014 16:28:42 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 08232E08002 for ; Sun, 5 Jan 2014 16:28:42 +0900 (JST) Received: from s00.gw.fujitsu.co.jp (s00.gw.nic.fujitsu.com [133.161.11.15]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id B54311DB802C for ; Sun, 5 Jan 2014 16:28:41 +0900 (JST) Received: from s00.gw.fujitsu.co.jp (kw-mxio2.gw.nic.fujitsu.com [10.0.237.142]) by s00.gw.fujitsu.co.jp (Postfix) with ESMTP id 93F881180F1 for ; Sun, 5 Jan 2014 16:28:41 +0900 (JST) Received: from G08FNSTD100518.localdomain (unknown [10.167.226.68]) by s00.gw.fujitsu.co.jp (Postfix) with ESMTP id 5BC5B8A008 for ; Sun, 5 Jan 2014 16:28:41 +0900 (JST) Received: by G08FNSTD100518.localdomain (Postfix, from userid 0) id C9247141E19; Sun, 5 Jan 2014 15:28:28 +0800 (CST) From: Qiao Nuohan To: stefanha@gmail.com, lcapitulino@redhat.com, afaerber@suse.de, eblake@redhat.com Date: Sun, 5 Jan 2014 15:27:37 +0800 Message-Id: <1388906864-1083-5-git-send-email-qiaonuohan@cn.fujitsu.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1388906864-1083-1-git-send-email-qiaonuohan@cn.fujitsu.com> References: <1388906864-1083-1-git-send-email-qiaonuohan@cn.fujitsu.com> X-TM-AS-MML: disable X-TM-AS-Product-Ver: IMSS-7.1.0.1403-6.8.0.1017-20408.005 X-TM-AS-Result: No--3.198-7.0-31-10 X-imss-scan-details: No--3.198-7.0-31-10 X-TM-AS-User-Approved-Sender: No X-TMASE-MatchedRID: oRrFSybQeq41vivz3L6ga935+5/2RxqmhczTTw3OrpjfUZT83lbkEJW3 ZGXw3kr5y5X05u8Zm4LHkD3MU9pI3XQdJ7XfU86exlblqLlYqXIV1gI4qxMxmGNU4zHvgwnQgB8 HXzVWVTeKvdIKxF9RaYtuQsN7bjRQVhLWzLsRIWQmeiVE1Qhl9BhvneBZaYFp/mrdMYBcIfr+v9 v52ZIoWjoAf389xF3XFSk9HhUZnw7OGIWnws4LoyHWPYzouJUy X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 192.51.44.38 Cc: qemu-devel@nongnu.org, qiaonuohan@cn.fujitsu.com, kumagai-atsushi@mxc.nes.nec.co.jp, anderson@redhat.com, akong@redhat.com, lersek@redhat.com Subject: [Qemu-devel] [PATCH v6 04/11] dump: Add API to write elf notes to buffer X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org the function can be used by write_elf32_notes/write_elf64_notes to write notes to a buffer. If fd_write_vmcore is used, write_elf32_notes/write_elf64_notes will write elf notes to vmcore directly. Instead, if buf_write_note is used, elf notes will be written to opaque->note_buf at first. Signed-off-by: Qiao Nuohan Reviewed-by: Laszlo Ersek --- dump.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/dump.c b/dump.c index 764db39..3b9cf00 100644 --- a/dump.c +++ b/dump.c @@ -76,6 +76,9 @@ typedef struct DumpState { int64_t begin; int64_t length; Error **errp; + + void *note_buf; + size_t note_buf_offset; } DumpState; static int dump_cleanup(DumpState *s) @@ -754,6 +757,22 @@ static int write_buffer(int fd, bool flag_flatten, off_t offset, void *buf, return 0; } +static int buf_write_note(void *buf, size_t size, void *opaque) +{ + DumpState *s = opaque; + + /* note_buf is not enough */ + if (s->note_buf_offset + size > s->note_size) { + return -1; + } + + memcpy(s->note_buf + s->note_buf_offset, buf, size); + + s->note_buf_offset += size; + + return 0; +} + static ram_addr_t get_start_block(DumpState *s) { GuestPhysBlock *block;