From nobody Sun Oct 26 00:02:46 2025 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 1516352077298309.06863073392856; Fri, 19 Jan 2018 00:54:37 -0800 (PST) Received: from localhost ([::1]:35430 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ecSRT-0001EV-OP for importer@patchew.org; Fri, 19 Jan 2018 03:54:31 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54604) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ecSII-00023I-3N for qemu-devel@nongnu.org; Fri, 19 Jan 2018 03:45:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ecSID-0005yl-86 for qemu-devel@nongnu.org; Fri, 19 Jan 2018 03:45:02 -0500 Received: from mail.ispras.ru ([83.149.199.45]:53866) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ecSID-0005yO-0w for qemu-devel@nongnu.org; Fri, 19 Jan 2018 03:44:57 -0500 Received: from [127.0.1.1] (unknown [85.142.117.226]) by mail.ispras.ru (Postfix) with ESMTPSA id 7A41854006A; Fri, 19 Jan 2018 11:44:54 +0300 (MSK) From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Fri, 19 Jan 2018 11:44:59 +0300 Message-ID: <20180119084459.7100.77078.stgit@pasha-VirtualBox> In-Reply-To: <20180119084235.7100.98318.stgit@pasha-VirtualBox> References: <20180119084235.7100.98318.stgit@pasha-VirtualBox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 83.149.199.45 Subject: [Qemu-devel] [RFC PATCH v4 19/23] replay: check return values of fwrite 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: kwolf@redhat.com, peter.maydell@linaro.org, pavel.dovgaluk@ispras.ru, mst@redhat.com, jasowang@redhat.com, quintela@redhat.com, zuban32s@gmail.com, maria.klimushenkova@ispras.ru, dovgaluk@ispras.ru, kraxel@redhat.com, boost.lists@gmail.com, pbonzini@redhat.com, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 This patch adds error reporting when fwrite cannot completely save the buffer to the file. Signed-off-by: Pavel Dovgalyuk -- v3: also check putc() return value --- replay/replay-internal.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/replay/replay-internal.c b/replay/replay-internal.c index a1a7686..1034d8f 100644 --- a/replay/replay-internal.c +++ b/replay/replay-internal.c @@ -24,12 +24,23 @@ static QemuMutex lock; =20 /* File for replay writing */ +static bool write_error; FILE *replay_file; =20 +static void replay_write_error(void) +{ + if (!write_error) { + error_report("replay write error"); + write_error =3D true; + } +} + void replay_put_byte(uint8_t byte) { if (replay_file) { - putc(byte, replay_file); + if (putc(byte, replay_file) =3D=3D EOF) { + replay_write_error(); + } } } =20 @@ -62,7 +73,9 @@ void replay_put_array(const uint8_t *buf, size_t size) { if (replay_file) { replay_put_dword(size); - fwrite(buf, 1, size, replay_file); + if (fwrite(buf, 1, size, replay_file) !=3D size) { + replay_write_error(); + } } } =20