xen-bus.c (4f65e89f8cf0e079b4ec3ddfede314bbb4e35c76) xen-bus.c (523b6b3abac928ff3574d8a45df58d29bd8ae454)
1/*
2 * Copyright (c) 2018 Citrix Systems Inc.
3 *
4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8#include "qemu/osdep.h"

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706
707 return (xen_device_frontend_scanf(xendev, "state", "%u", &state) == 1);
708}
709
710static void xen_device_frontend_create(XenDevice *xendev, Error **errp)
711{
712 ERRP_GUARD();
713 XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
1/*
2 * Copyright (c) 2018 Citrix Systems Inc.
3 *
4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8#include "qemu/osdep.h"

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706
707 return (xen_device_frontend_scanf(xendev, "state", "%u", &state) == 1);
708}
709
710static void xen_device_frontend_create(XenDevice *xendev, Error **errp)
711{
712 ERRP_GUARD();
713 XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
714 XenDeviceClass *xendev_class = XEN_DEVICE_GET_CLASS(xendev);
714
715
715 xendev->frontend_path = xen_device_get_frontend_path(xendev);
716 if (xendev_class->get_frontend_path) {
717 xendev->frontend_path = xendev_class->get_frontend_path(xendev, errp);
718 if (!xendev->frontend_path) {
719 error_prepend(errp, "failed to create frontend: ");
720 return;
721 }
722 } else {
723 xendev->frontend_path = xen_device_get_frontend_path(xendev);
724 }
716
717 /*
718 * The frontend area may have already been created by a legacy
719 * toolstack.
720 */
721 if (!xen_device_frontend_exists(xendev)) {
722 g_assert(xenbus->xsh);
723

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726 /*
727 * The frontend area may have already been created by a legacy
728 * toolstack.
729 */
730 if (!xen_device_frontend_exists(xendev)) {
731 g_assert(xenbus->xsh);
732

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