From nobody Mon Feb 9 06:00:25 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1507603477259835.9400814388933; Mon, 9 Oct 2017 19:44:37 -0700 (PDT) Received: from localhost ([::1]:60791 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e1kX4-0006oQ-Ex for importer@patchew.org; Mon, 09 Oct 2017 22:44:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38363) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e1kSx-0003Q2-Av for qemu-devel@nongnu.org; Mon, 09 Oct 2017 22:40:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e1kSu-0003Lr-Sx for qemu-devel@nongnu.org; Mon, 09 Oct 2017 22:40:19 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53732) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e1kSu-0003JT-Kp for qemu-devel@nongnu.org; Mon, 09 Oct 2017 22:40:16 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A994BC057F91; Tue, 10 Oct 2017 02:40:15 +0000 (UTC) Received: from localhost (ovpn-116-25.gru2.redhat.com [10.97.116.25]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3F57567C67; Tue, 10 Oct 2017 02:40:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com A994BC057F91 Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=ehabkost@redhat.com From: Eduardo Habkost To: Peter Maydell Date: Mon, 9 Oct 2017 23:39:58 -0300 Message-Id: <20171010024001.4526-6-ehabkost@redhat.com> In-Reply-To: <20171010024001.4526-1-ehabkost@redhat.com> References: <20171010024001.4526-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 10 Oct 2017 02:40:15 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL v2 5/8] config: qemu_config_parse() return number of config groups 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Change qemu_config_parse() to return the number of config groups in success and -EINVAL on error. This will allow callers of qemu_config_parse() to check if something was really loaded from the config file. All existing callers of qemu_config_parse() and qemu_read_config_file() only check if the return value was negative, so the change shouldn't affect them. Reviewed-by: Markus Armbruster Reviewed-by: Eric Blake Signed-off-by: Eduardo Habkost Message-Id: <20171004025043.3788-2-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost --- block/blkdebug.c | 1 - util/qemu-config.c | 15 +++++++-------- 2 files changed, 7 insertions(+), 9 deletions(-) diff --git a/block/blkdebug.c b/block/blkdebug.c index 46e53f2f09..dfdf9b91aa 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -244,7 +244,6 @@ static int read_config(BDRVBlkdebugState *s, const char= *filename, ret =3D qemu_config_parse(f, config_groups, filename); if (ret < 0) { error_setg(errp, "Could not parse blkdebug config file"); - ret =3D -EINVAL; goto fail; } } diff --git a/util/qemu-config.c b/util/qemu-config.c index 405dd1a1d7..99b0e46fa3 100644 --- a/util/qemu-config.c +++ b/util/qemu-config.c @@ -385,6 +385,7 @@ void qemu_config_write(FILE *fp) } } =20 +/* Returns number of config groups on success, -errno on error */ int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname) { char line[1024], group[64], id[64], arg[64], value[1024]; @@ -392,7 +393,8 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, c= onst char *fname) QemuOptsList *list =3D NULL; Error *local_err =3D NULL; QemuOpts *opts =3D NULL; - int res =3D -1, lno =3D 0; + int res =3D -EINVAL, lno =3D 0; + int count =3D 0; =20 loc_push_none(&loc); while (fgets(line, sizeof(line), fp) !=3D NULL) { @@ -413,6 +415,7 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, c= onst char *fname) goto out; } opts =3D qemu_opts_create(list, id, 1, NULL); + count++; continue; } if (sscanf(line, "[%63[^]]]", group) =3D=3D 1) { @@ -423,6 +426,7 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, c= onst char *fname) goto out; } opts =3D qemu_opts_create(list, NULL, 0, &error_abort); + count++; continue; } value[0] =3D '\0'; @@ -447,7 +451,7 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, c= onst char *fname) error_report("error reading file"); goto out; } - res =3D 0; + res =3D count; out: loc_pop(&loc); return res; @@ -464,12 +468,7 @@ int qemu_read_config_file(const char *filename) =20 ret =3D qemu_config_parse(f, vm_config_groups, filename); fclose(f); - - if (ret =3D=3D 0) { - return 0; - } else { - return -EINVAL; - } + return ret; } =20 static void config_parse_qdict_section(QDict *options, QemuOptsList *opts, --=20 2.13.6