From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z04oF-0007y8-Nr for qemu-devel@nongnu.org; Wed, 03 Jun 2015 05:18:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z04oE-0007PL-7C for qemu-devel@nongnu.org; Wed, 03 Jun 2015 05:18:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43358) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z04oE-0007Ow-05 for qemu-devel@nongnu.org; Wed, 03 Jun 2015 05:18:02 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id B2F80B6E74 for ; Wed, 3 Jun 2015 09:18:01 +0000 (UTC) From: Markus Armbruster Date: Wed, 3 Jun 2015 11:17:56 +0200 Message-Id: <1433323076-9264-10-git-send-email-armbru@redhat.com> In-Reply-To: <1433323076-9264-1-git-send-email-armbru@redhat.com> References: <1433323076-9264-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PATCH v2 9/9] vhost-user: Improve -netdev/netdev_add/-net/... error reporting List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, pbonzini@redhat.com, Jason Wang , Stefan Hajnoczi When -netdev vhost-user fails, it first reports a specific error, then one or more generic ones, like this: $ qemu-system-x86_64 -netdev vhost-user,id=foo,chardev=xxx qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: chardev "xxx" not found qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: No suitable chardev found qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: Device 'vhost-user' could not be initialized With the command line, the messages go to stderr. In HMP, they go to the monitor. In QMP, the last one becomes the error reply, and the others go to stderr. Convert net_init_vhost_user() and its helpers to Error. This suppresses the unwanted unspecific error messages, and makes the specific error the QMP error reply. Cc: Stefan Hajnoczi Cc: Jason Wang Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Stefan Hajnoczi --- net/vhost-user.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/net/vhost-user.c b/net/vhost-user.c index 7e8a9ec..3930741 100644 --- a/net/vhost-user.c +++ b/net/vhost-user.c @@ -170,33 +170,34 @@ static int net_vhost_chardev_opts(void *opaque, } else if (strcmp(name, "server") == 0) { props->is_server = true; } else { - error_report("vhost-user does not support a chardev" - " with the following option:\n %s = %s", - name, value); + error_setg(errp, + "vhost-user does not support a chardev with option %s=%s", + name, value); return -1; } return 0; } -static CharDriverState *net_vhost_parse_chardev(const NetdevVhostUserOptions *opts) +static CharDriverState *net_vhost_parse_chardev( + const NetdevVhostUserOptions *opts, Error **errp) { CharDriverState *chr = qemu_chr_find(opts->chardev); VhostUserChardevProps props; if (chr == NULL) { - error_report("chardev \"%s\" not found", opts->chardev); + error_setg(errp, "chardev \"%s\" not found", opts->chardev); return NULL; } /* inspect chardev opts */ memset(&props, 0, sizeof(props)); - if (qemu_opt_foreach(chr->opts, net_vhost_chardev_opts, &props, NULL)) { + if (qemu_opt_foreach(chr->opts, net_vhost_chardev_opts, &props, errp)) { return NULL; } if (!props.is_socket || !props.is_unix) { - error_report("chardev \"%s\" is not a unix socket", - opts->chardev); + error_setg(errp, "chardev \"%s\" is not a unix socket", + opts->chardev); return NULL; } @@ -220,7 +221,7 @@ static int net_vhost_check_net(void *opaque, QemuOpts *opts, Error **errp) if (strcmp(netdev, name) == 0 && strncmp(driver, virtio_name, strlen(virtio_name)) != 0) { - error_report("vhost-user requires frontend driver virtio-net-*"); + error_setg(errp, "vhost-user requires frontend driver virtio-net-*"); return -1; } @@ -230,7 +231,6 @@ static int net_vhost_check_net(void *opaque, QemuOpts *opts, Error **errp) int net_init_vhost_user(const NetClientOptions *opts, const char *name, NetClientState *peer, Error **errp) { - /* FIXME error_setg(errp, ...) on failure */ uint32_t queues; const NetdevVhostUserOptions *vhost_user_opts; CharDriverState *chr; @@ -238,15 +238,14 @@ int net_init_vhost_user(const NetClientOptions *opts, const char *name, assert(opts->kind == NET_CLIENT_OPTIONS_KIND_VHOST_USER); vhost_user_opts = opts->vhost_user; - chr = net_vhost_parse_chardev(vhost_user_opts); + chr = net_vhost_parse_chardev(vhost_user_opts, errp); if (!chr) { - error_report("No suitable chardev found"); return -1; } /* verify net frontend */ if (qemu_opts_foreach(qemu_find_opts("device"), net_vhost_check_net, - (char *)name, NULL)) { + (char *)name, errp)) { return -1; } -- 1.9.3