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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1754067743; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zTZ8cBeLzqTe1O39WadGXcC9o9ALnNZNi7JydoMf858=; b=Uro8VKr7H8b3P3Z4MIuPD4aWjb1eL1tJl4ZTO4nna7aH9Zuz0VYG5kZ1uAoQ5K14m9jLO6 nkl8l7eOSbVoXH3xjb8QXt8MF5BaCDPaj9gX6qxIdws/TnrQeig5xfmo7KH4dMvoWPGmDz kLVWdf4ssCIMwILGfPf6N1KoQi2JPcg= X-MC-Unique: N6Q4S3DZN-KSsKTnbq-7HA-1 X-Mimecast-MFC-AGG-ID: N6Q4S3DZN-KSsKTnbq-7HA_1754067739 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Juraj Marcin , Peter Xu , Fabiano Rosas , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH 1/2] migration: simplify error reporting after channel read Date: Fri, 1 Aug 2025 18:02:11 +0100 Message-ID: <20250801170212.54409-2-berrange@redhat.com> In-Reply-To: <20250801170212.54409-1-berrange@redhat.com> References: <20250801170212.54409-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1754073389452116600 The code handling the return value of qio_channel_read proceses len =3D=3D 0 (EOF) separately from len < 1 (error), but in both cases ends up calling qemu_file_set_error_obj() with -EIO as the errno. This logic can be merged into one codepath to simplify it. Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Peter Xu Reviewed-by: Prasad Pandit --- migration/qemu-file.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/migration/qemu-file.c b/migration/qemu-file.c index b6ac190034..8ee44c5ac9 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -348,17 +348,13 @@ static ssize_t coroutine_mixed_fn qemu_fill_buffer(QE= MUFile *f) } else { qio_channel_wait(f->ioc, G_IO_IN); } - } else if (len < 0) { - len =3D -EIO; } } while (len =3D=3D QIO_CHANNEL_ERR_BLOCK); =20 if (len > 0) { f->buf_size +=3D len; - } else if (len =3D=3D 0) { - qemu_file_set_error_obj(f, -EIO, local_error); } else { - qemu_file_set_error_obj(f, len, local_error); + qemu_file_set_error_obj(f, -EIO, local_error); } =20 for (int i =3D 0; i < nfd; i++) { --=20 2.50.1