From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH 20/29] tools/libxl: Update datacopier to support sending data only Date: Wed, 10 Sep 2014 18:10:58 +0100 Message-ID: <1410369067-1330-21-git-send-email-andrew.cooper3@citrix.com> References: <1410369067-1330-1-git-send-email-andrew.cooper3@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1410369067-1330-1-git-send-email-andrew.cooper3@citrix.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: Andrew Cooper , Ian Jackson , Ian Campbell , Wen Congyang List-Id: xen-devel@lists.xenproject.org From: Wen Congyang 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); -- 1.7.10.4