From nobody Mon Feb 9 07:22:43 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; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1518019542877688.3086603399659; Wed, 7 Feb 2018 08:05:42 -0800 (PST) Received: from localhost ([::1]:55110 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejSE9-0003g7-Qs for importer@patchew.org; Wed, 07 Feb 2018 11:05:41 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48577) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejS7V-000757-Kk for qemu-devel@nongnu.org; Wed, 07 Feb 2018 10:58:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ejS7U-0000zC-EE for qemu-devel@nongnu.org; Wed, 07 Feb 2018 10:58:49 -0500 Received: from new-relay.sw.ru ([195.214.232.40]:47728) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ejS7O-0000lf-8n; Wed, 07 Feb 2018 10:58:42 -0500 Received: from msk-vpn.virtuozzo.com ([195.214.232.6] helo=kvm.sw.ru) by new-relay.sw.ru with esmtp (Exim 4.89) (envelope-from ) id 1ejS7K-0004dD-7l; Wed, 07 Feb 2018 18:58:38 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Wed, 7 Feb 2018 18:58:33 +0300 Message-Id: <20180207155837.92351-9-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180207155837.92351-1-vsementsov@virtuozzo.com> References: <20180207155837.92351-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 195.214.232.40 Subject: [Qemu-devel] [PATCH v10 08/12] migration/qemu-file: add qemu_put_counted_string() 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, vsementsov@virtuozzo.com, famz@redhat.com, lirans@il.ibm.com, quintela@redhat.com, jsnow@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org, amit.shah@redhat.com, pbonzini@redhat.com, dgilbert@redhat.com 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" Add function opposite to qemu_get_counted_string. qemu_put_counted_string puts one-byte length of the string (string should not be longer than 255 characters), and then it puts the string, without last zero byte. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow Reviewed-by: Juan Quintela Reviewed-by: Fam Zheng --- migration/qemu-file.h | 2 ++ migration/qemu-file.c | 13 +++++++++++++ 2 files changed, 15 insertions(+) diff --git a/migration/qemu-file.h b/migration/qemu-file.h index aae4e5ed36..f4f356ab12 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -174,4 +174,6 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t bl= ock_offset, ram_addr_t offset, size_t size, uint64_t *bytes_sent); =20 +void qemu_put_counted_string(QEMUFile *f, const char *name); + #endif diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 2ab2bf362d..e85f501f86 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -734,6 +734,19 @@ size_t qemu_get_counted_string(QEMUFile *f, char buf[2= 56]) } =20 /* + * Put a string with one preceding byte containing its length. The length = of + * the string should be less than 256. + */ +void qemu_put_counted_string(QEMUFile *f, const char *str) +{ + size_t len =3D strlen(str); + + assert(len < 256); + qemu_put_byte(f, len); + qemu_put_buffer(f, (const uint8_t *)str, len); +} + +/* * Set the blocking state of the QEMUFile. * Note: On some transports the OS only keeps a single blocking state for * both directions, and thus changing the blocking on the main --=20 2.11.1