From patchwork Thu Jun 16 19:28:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 9181511 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AF8E660760 for ; Thu, 16 Jun 2016 19:30:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7F51F26785 for ; Thu, 16 Jun 2016 19:30:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7208D2837E; Thu, 16 Jun 2016 19:30:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 180D426785 for ; Thu, 16 Jun 2016 19:30:06 +0000 (UTC) Received: from localhost ([::1]:51790 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDczN-0001dO-4Q for patchwork-qemu-devel@patchwork.kernel.org; Thu, 16 Jun 2016 15:30:05 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43117) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDcyl-0001YH-Ss for qemu-devel@nongnu.org; Thu, 16 Jun 2016 15:29:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bDcyi-0004iu-B4 for qemu-devel@nongnu.org; Thu, 16 Jun 2016 15:29:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57178) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDcyi-0004ii-2p for qemu-devel@nongnu.org; Thu, 16 Jun 2016 15:29:24 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A90D1201E8 for ; Thu, 16 Jun 2016 19:29:23 +0000 (UTC) Received: from localhost (ovpn-116-108.phx2.redhat.com [10.3.116.108]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u5GJTGi5016776; Thu, 16 Jun 2016 15:29:18 -0400 From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Date: Thu, 16 Jun 2016 21:28:52 +0200 Message-Id: <1466105332-10285-4-git-send-email-marcandre.lureau@redhat.com> In-Reply-To: <1466105332-10285-1-git-send-email-marcandre.lureau@redhat.com> References: <1466105332-10285-1-git-send-email-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 16 Jun 2016 19:29:23 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 3/3] socket: unlink unix socket on remove X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pbonzini@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Marc-André Lureau qemu leaves unix socket files behind when removing a listening chardev or leaving. qemu could clean that up, even if doing so isn't race-free. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1347077 Signed-off-by: Marc-André Lureau Reviewed-by: Daniel P. Berrange --- include/qemu/sockets.h | 1 + io/channel-socket.c | 10 ++++++++++ tests/test-io-channel-socket.c | 2 +- util/qemu-sockets.c | 18 ++++++++++++++++++ 4 files changed, 30 insertions(+), 1 deletion(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 1bd9218..5dd2648 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error **errp); int socket_connect(SocketAddress *addr, Error **errp, NonBlockingConnectHandler *callback, void *opaque); int socket_listen(SocketAddress *addr, Error **errp); +void socket_listen_cleanup(int fd, Error **errp); int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); /* Old, ipv4 only bits. Don't use for new code. */ diff --git a/io/channel-socket.c b/io/channel-socket.c index 1cd5848..6ec87f8 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) static void qio_channel_socket_finalize(Object *obj) { QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); + if (ioc->fd != -1) { + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { + Error *err = NULL; + + socket_listen_cleanup(ioc->fd, &err); + if (err) { + error_report_err(err); + err = NULL; + } + } #ifdef WIN32 WSAEventSelect(ioc->fd, NULL, 0); #endif diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c index 855306b..f73e063 100644 --- a/tests/test-io-channel-socket.c +++ b/tests/test-io-channel-socket.c @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); - unlink(TEST_SOCKET); + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); } diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 0d6cd1f..5d03695 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) return fd; } +void socket_listen_cleanup(int fd, Error **errp) +{ + SocketAddress *addr; + + addr = socket_local_address(fd, errp); + + if (addr->type == SOCKET_ADDRESS_KIND_UNIX + && addr->u.q_unix.data->path) { + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { + error_setg_errno(errp, errno, + "Failed to unlink socket %s", + addr->u.q_unix.data->path); + } + } + + g_free(addr); +} + int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) { int fd;