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-rw-r--r--include/io/channel-buffer.h59
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diff --git a/include/io/channel-buffer.h b/include/io/channel-buffer.h
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+/*
+ * QEMU I/O channels memory buffer driver
+ *
+ * Copyright (c) 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef QIO_CHANNEL_BUFFER_H
+#define QIO_CHANNEL_BUFFER_H
+
+#include "io/channel.h"
+#include "qom/object.h"
+
+#define TYPE_QIO_CHANNEL_BUFFER "qio-channel-buffer"
+OBJECT_DECLARE_SIMPLE_TYPE(QIOChannelBuffer, QIO_CHANNEL_BUFFER)
+
+
+/**
+ * QIOChannelBuffer:
+ *
+ * The QIOChannelBuffer object provides a channel implementation
+ * that is able to perform I/O to/from a memory buffer.
+ *
+ */
+
+struct QIOChannelBuffer {
+ QIOChannel parent;
+ size_t capacity; /* Total allocated memory */
+ size_t usage; /* Current size of data */
+ size_t offset; /* Offset for future I/O ops */
+ uint8_t *data;
+};
+
+
+/**
+ * qio_channel_buffer_new:
+ * @capacity: the initial buffer capacity to allocate
+ *
+ * Allocate a new buffer which is initially empty
+ *
+ * Returns: the new channel object
+ */
+QIOChannelBuffer *
+qio_channel_buffer_new(size_t capacity);
+
+#endif /* QIO_CHANNEL_BUFFER_H */