From patchwork Fri Oct 22 18:43:21 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [RFC,05/15] virtproxy: add accept handler for communication channel From: Michael Roth X-Patchwork-Id: 68926 Message-Id: <1287773011-24726-6-git-send-email-mdroth@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Cc: aliguori@linux.vnet.ibm.com, ryanh@us.ibm.com, agl@linux.vnet.ibm.com, mdroth@linux.vnet.ibm.com, abeekhof@redhat.com Date: Fri, 22 Oct 2010 13:43:21 -0500 This accept()'s connections to the socket we told virt-proxy to listen for the channel connection on and sets the appropriate read handler for the resulting FD. Signed-off-by: Michael Roth --- virtproxy.c | 37 +++++++++++++++++++++++++++++++++++++ 1 files changed, 37 insertions(+), 0 deletions(-) diff --git a/virtproxy.c b/virtproxy.c index fa17722..20532c2 100644 --- a/virtproxy.c +++ b/virtproxy.c @@ -166,6 +166,8 @@ static VPConn *get_conn(const VPDriver *drv, int fd, bool client) return NULL; } +static void vp_channel_accept(void *opaque); + /* get VPOForward by service_id */ static VPOForward *get_oforward(const VPDriver *drv, const char *service_id) { @@ -193,3 +195,38 @@ static VPIForward *get_iforward(const VPDriver *drv, const char *service_id) return NULL; } + +/* accept handler for communication channel + * + * accept()s connection to communication channel (for sockets), and sets + * up the read handler for resulting FD. + */ +static void vp_channel_accept(void *opaque) +{ + VPDriver *drv = opaque; + struct sockaddr_in saddr; + struct sockaddr *addr; + socklen_t len; + int fd; + + TRACE("called with opaque: %p", drv); + + for(;;) { + len = sizeof(saddr); + addr = (struct sockaddr *)&saddr; + fd = qemu_accept(drv->listen_fd, addr, &len); + + if (fd < 0 && errno != EINTR) { + TRACE("accept() failed"); + return; + } else if (fd >= 0) { + TRACE("accepted connection"); + break; + } + } + + drv->channel_fd = fd; + vp_set_fd_handler(drv->channel_fd, vp_channel_read, NULL, drv); + /* dont accept anymore connections until channel_fd is closed */ + vp_set_fd_handler(drv->listen_fd, NULL, NULL, NULL); +}