From patchwork Thu Feb 28 08:09:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wayne Xia X-Patchwork-Id: 223808 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id F36EE2C0084 for ; Thu, 28 Feb 2013 19:12:50 +1100 (EST) Received: from localhost ([::1]:47679 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UAybh-0007cF-2e for incoming@patchwork.ozlabs.org; Thu, 28 Feb 2013 03:12:49 -0500 Received: from eggs.gnu.org ([208.118.235.92]:50747) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UAybJ-0007ZD-ID for qemu-devel@nongnu.org; Thu, 28 Feb 2013 03:12:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UAybI-0004Lw-E2 for qemu-devel@nongnu.org; Thu, 28 Feb 2013 03:12:25 -0500 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:52719) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UAybH-0004LR-PL for qemu-devel@nongnu.org; Thu, 28 Feb 2013 03:12:24 -0500 Received: from /spool/local by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 28 Feb 2013 13:40:09 +0530 Received: from d28dlp02.in.ibm.com (9.184.220.127) by e28smtp05.in.ibm.com (192.168.1.135) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 28 Feb 2013 13:40:06 +0530 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id C329C3940053 for ; Thu, 28 Feb 2013 13:42:17 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r1S8CFxc24576058 for ; Thu, 28 Feb 2013 13:42:15 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r1S8CHFE013535 for ; Thu, 28 Feb 2013 08:12:17 GMT Received: from RH63Wenchao (wenchaox.cn.ibm.com [9.115.122.12] (may be forged)) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r1S89njA004622; Thu, 28 Feb 2013 08:12:15 GMT From: Wenchao Xia To: qemu-devel@nongnu.org Date: Thu, 28 Feb 2013 16:09:42 +0800 Message-Id: <1362038985-19008-2-git-send-email-xiawenc@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1362038985-19008-1-git-send-email-xiawenc@linux.vnet.ibm.com> References: <1362038985-19008-1-git-send-email-xiawenc@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13022808-8256-0000-0000-00000666B567 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 122.248.162.5 Cc: kwolf@redhat.com, aliguori@us.ibm.com, quintela@redhat.com, stefanha@gmail.com, pbonzini@redhat.com, Wenchao Xia Subject: [Qemu-devel] [PATCH 1/4] qemu-file: add function qemu_fseek() 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 Signed-off-by: Wenchao Xia --- include/migration/qemu-file.h | 1 + savevm.c | 17 +++++++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h index 46fc11d..210c311 100644 --- a/include/migration/qemu-file.h +++ b/include/migration/qemu-file.h @@ -82,6 +82,7 @@ QEMUFile *qemu_popen_cmd(const char *command, const char *mode); int qemu_get_fd(QEMUFile *f); int qemu_fclose(QEMUFile *f); int64_t qemu_ftell(QEMUFile *f); +int qemu_fseek(QEMUFile *f, int64_t offset); void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size); void qemu_put_byte(QEMUFile *f, int v); diff --git a/savevm.c b/savevm.c index a8a53ef..54dc090 100644 --- a/savevm.c +++ b/savevm.c @@ -683,6 +683,23 @@ int64_t qemu_ftell(QEMUFile *f) } } +int qemu_fseek(QEMUFile *f, int64_t offset) +{ + /* only support for writing */ + g_assert(f->is_write); + + int ret; + if (f->buf_index) { + ret = qemu_fflush(f); + if (ret < 0) { + qemu_file_set_error(f, ret); + return ret; + } + } + f->buf_offset = offset; + return 0; +} + int qemu_file_rate_limit(QEMUFile *f) { if (f->ops->rate_limit)