From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wen Congyang Subject: [RFC Patch v3 7/8] update datecopier to support sending data only Date: Fri, 5 Sep 2014 17:20:18 +0800 Message-ID: <1409908819-18927-8-git-send-email-wency@cn.fujitsu.com> References: <1409908819-18927-1-git-send-email-wency@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1409908819-18927-1-git-send-email-wency@cn.fujitsu.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen devel Cc: Ian Campbell , Wen Congyang , Ian Jackson , Jiang Yunhong , Dong Eddie , Yang Hongyang , Lai Jiangshan List-Id: xen-devel@lists.xenproject.org datacopier is to read some data and write it out. If we have some data to send it over network, we cannot use datacopier. Update it to support this case. Signed-off-by: Wen Congyang --- tools/libxl/libxl_aoutils.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/libxl/libxl_aoutils.c b/tools/libxl/libxl_aoutils.c index b10d2e1..3e0c0ae 100644 --- a/tools/libxl/libxl_aoutils.c +++ b/tools/libxl/libxl_aoutils.c @@ -309,9 +309,11 @@ int libxl__datacopier_start(libxl__datacopier_state *dc) libxl__datacopier_init(dc); - rc = libxl__ev_fd_register(gc, &dc->toread, datacopier_readable, - dc->readfd, POLLIN); - if (rc) goto out; + if (dc->readfd >= 0) { + rc = libxl__ev_fd_register(gc, &dc->toread, datacopier_readable, + dc->readfd, POLLIN); + if (rc) goto out; + } rc = libxl__ev_fd_register(gc, &dc->towrite, datacopier_writable, dc->writefd, POLLOUT); -- 1.9.3