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bh=vnuuJxp1JQdRXdU3c7OwH3ZR1JMW18zg+RAsQ+upqKY=; b=dJhedP8XZtcZRVmhGoxt8HvHQzix8MKGEHN/G63LK1QibNfvgCfRZc8wQfyQPcWTo4IyIx yfqnD6n4qluHoRfDThVaBspTsccnvw8iAScRWVLBDieVGIpKx1h1/JfRV6VWwve3IXgCQL glCC9Z7Egp+pGKwUZ74dAhZ0LvS4qRI= X-MC-Unique: 61VW-Y0UOFaiCroipg2Irw-1 From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, berrange@redhat.com, huangy81@chinatelecom.cn, quintela@redhat.com, leobras@redhat.com, peterx@redhat.com Cc: jdenemar@redhat.com Subject: [PULL 17/25] migration: introduce new constructors for QEMUFile Date: Thu, 23 Jun 2022 17:53:46 +0100 Message-Id: <20220623165354.197792-18-dgilbert@redhat.com> In-Reply-To: <20220623165354.197792-1-dgilbert@redhat.com> References: <20220623165354.197792-1-dgilbert@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 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=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1656004022879100001 From: Daniel P. Berrang=C3=A9 Prepare for the elimination of QEMUFileOps by introducing a pair of new constructors. This lets us distinguish between an input and output file object explicitly rather than via the existance of specific callbacks. Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Signed-off-by: Dr. David Alan Gilbert --- migration/qemu-file-channel.c | 4 ++-- migration/qemu-file.c | 18 ++++++++++++++++-- migration/qemu-file.h | 3 ++- 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c index ce8eced417..5cb8ac93c0 100644 --- a/migration/qemu-file-channel.c +++ b/migration/qemu-file-channel.c @@ -184,11 +184,11 @@ static const QEMUFileOps channel_output_ops =3D { QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc) { object_ref(OBJECT(ioc)); - return qemu_fopen_ops(ioc, &channel_input_ops); + return qemu_file_new_input(ioc, &channel_input_ops); } =20 QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc) { object_ref(OBJECT(ioc)); - return qemu_fopen_ops(ioc, &channel_output_ops); + return qemu_file_new_output(ioc, &channel_output_ops); } diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 30e2160041..2d6ceb53af 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -38,6 +38,7 @@ struct QEMUFile { const QEMUFileOps *ops; const QEMUFileHooks *hooks; QIOChannel *ioc; + bool is_writable; =20 /* * Maximum amount of data in bytes to transfer during one @@ -111,7 +112,9 @@ bool qemu_file_mode_is_not_valid(const char *mode) return false; } =20 -QEMUFile *qemu_fopen_ops(QIOChannel *ioc, const QEMUFileOps *ops) +static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, + const QEMUFileOps *ops, + bool is_writable) { QEMUFile *f; =20 @@ -119,10 +122,21 @@ QEMUFile *qemu_fopen_ops(QIOChannel *ioc, const QEMUF= ileOps *ops) =20 f->ioc =3D ioc; f->ops =3D ops; + f->is_writable =3D is_writable; =20 return f; } =20 +QEMUFile *qemu_file_new_output(QIOChannel *ioc, const QEMUFileOps *ops) +{ + return qemu_file_new_impl(ioc, ops, true); +} + +QEMUFile *qemu_file_new_input(QIOChannel *ioc, const QEMUFileOps *ops) +{ + return qemu_file_new_impl(ioc, ops, false); +} + =20 void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks) { @@ -181,7 +195,7 @@ void qemu_file_set_error(QEMUFile *f, int ret) =20 bool qemu_file_is_writable(QEMUFile *f) { - return f->ops->writev_buffer; + return f->is_writable; } =20 static void qemu_iovec_release_ram(QEMUFile *f) diff --git a/migration/qemu-file.h b/migration/qemu-file.h index 3a1ecc0e34..3c93a27978 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -118,7 +118,8 @@ typedef struct QEMUFileHooks { QEMURamSaveFunc *save_page; } QEMUFileHooks; =20 -QEMUFile *qemu_fopen_ops(QIOChannel *ioc, const QEMUFileOps *ops); +QEMUFile *qemu_file_new_input(QIOChannel *ioc, const QEMUFileOps *ops); +QEMUFile *qemu_file_new_output(QIOChannel *ioc, const QEMUFileOps *ops); void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks); int qemu_get_fd(QEMUFile *f); int qemu_fclose(QEMUFile *f); --=20 2.36.1