diff options
Diffstat (limited to 'hw/block/xen-block.c')
| -rw-r--r-- | hw/block/xen-block.c | 124 |
1 files changed, 50 insertions, 74 deletions
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c index 1b7bc5de08..8a7a3f5452 100644 --- a/hw/block/xen-block.c +++ b/hw/block/xen-block.c @@ -195,6 +195,7 @@ static const BlockDevOps xen_block_dev_ops = { static void xen_block_realize(XenDevice *xendev, Error **errp) { + ERRP_GUARD(); XenBlockDevice *blockdev = XEN_BLOCK_DEVICE(xendev); XenBlockDeviceClass *blockdev_class = XEN_BLOCK_DEVICE_GET_CLASS(xendev); @@ -202,7 +203,6 @@ static void xen_block_realize(XenDevice *xendev, Error **errp) XenBlockVdev *vdev = &blockdev->props.vdev; BlockConf *conf = &blockdev->props.conf; BlockBackend *blk = conf->blk; - Error *local_err = NULL; if (vdev->type == XEN_BLOCK_VDEV_TYPE_INVALID) { error_setg(errp, "vdev property not set"); @@ -212,9 +212,8 @@ static void xen_block_realize(XenDevice *xendev, Error **errp) trace_xen_block_realize(type, vdev->disk, vdev->partition); if (blockdev_class->realize) { - blockdev_class->realize(blockdev, &local_err); - if (local_err) { - error_propagate(errp, local_err); + blockdev_class->realize(blockdev, errp); + if (*errp) { return; } } @@ -280,8 +279,8 @@ static void xen_block_frontend_changed(XenDevice *xendev, enum xenbus_state frontend_state, Error **errp) { + ERRP_GUARD(); enum xenbus_state backend_state = xen_device_backend_get_state(xendev); - Error *local_err = NULL; switch (frontend_state) { case XenbusStateInitialised: @@ -290,15 +289,13 @@ static void xen_block_frontend_changed(XenDevice *xendev, break; } - xen_block_disconnect(xendev, &local_err); - if (local_err) { - error_propagate(errp, local_err); + xen_block_disconnect(xendev, errp); + if (*errp) { break; } - xen_block_connect(xendev, &local_err); - if (local_err) { - error_propagate(errp, local_err); + xen_block_connect(xendev, errp); + if (*errp) { break; } @@ -311,9 +308,8 @@ static void xen_block_frontend_changed(XenDevice *xendev, case XenbusStateClosed: case XenbusStateUnknown: - xen_block_disconnect(xendev, &local_err); - if (local_err) { - error_propagate(errp, local_err); + xen_block_disconnect(xendev, errp); + if (*errp) { break; } @@ -403,7 +399,6 @@ static void xen_block_set_vdev(Object *obj, Visitor *v, const char *name, DeviceState *dev = DEVICE(obj); Property *prop = opaque; XenBlockVdev *vdev = qdev_get_prop_ptr(dev, prop); - Error *local_err = NULL; char *str, *p; const char *end; @@ -412,9 +407,7 @@ static void xen_block_set_vdev(Object *obj, Visitor *v, const char *name, return; } - visit_type_str(v, name, &str, &local_err); - if (local_err) { - error_propagate(errp, local_err); + if (!visit_type_str(v, name, &str, errp)) { return; } @@ -668,9 +661,9 @@ static void xen_block_blockdev_del(const char *node_name, Error **errp) static char *xen_block_blockdev_add(const char *id, QDict *qdict, Error **errp) { + ERRP_GUARD(); const char *driver = qdict_get_try_str(qdict, "driver"); BlockdevOptions *options = NULL; - Error *local_err = NULL; char *node_name; Visitor *v; @@ -685,18 +678,15 @@ static char *xen_block_blockdev_add(const char *id, QDict *qdict, trace_xen_block_blockdev_add(node_name); v = qobject_input_visitor_new(QOBJECT(qdict)); - visit_type_BlockdevOptions(v, NULL, &options, &local_err); + visit_type_BlockdevOptions(v, NULL, &options, errp); visit_free(v); - - if (local_err) { - error_propagate(errp, local_err); + if (!options) { goto fail; } - qmp_blockdev_add(options, &local_err); + qmp_blockdev_add(options, errp); - if (local_err) { - error_propagate(errp, local_err); + if (*errp) { goto fail; } @@ -715,14 +705,12 @@ fail: static void xen_block_drive_destroy(XenBlockDrive *drive, Error **errp) { + ERRP_GUARD(); char *node_name = drive->node_name; if (node_name) { - Error *local_err = NULL; - - xen_block_blockdev_del(node_name, &local_err); - if (local_err) { - error_propagate(errp, local_err); + xen_block_blockdev_del(node_name, errp); + if (*errp) { return; } g_free(node_name); @@ -736,6 +724,7 @@ static XenBlockDrive *xen_block_drive_create(const char *id, const char *device_type, QDict *opts, Error **errp) { + ERRP_GUARD(); const char *params = qdict_get_try_str(opts, "params"); const char *mode = qdict_get_try_str(opts, "mode"); const char *direct_io_safe = qdict_get_try_str(opts, "direct-io-safe"); @@ -743,7 +732,6 @@ static XenBlockDrive *xen_block_drive_create(const char *id, char *driver = NULL; char *filename = NULL; XenBlockDrive *drive = NULL; - Error *local_err = NULL; QDict *file_layer; QDict *driver_layer; @@ -822,13 +810,12 @@ static XenBlockDrive *xen_block_drive_create(const char *id, g_assert(!drive->node_name); drive->node_name = xen_block_blockdev_add(drive->id, driver_layer, - &local_err); + errp); qobject_unref(driver_layer); done: - if (local_err) { - error_propagate(errp, local_err); + if (*errp) { xen_block_drive_destroy(drive, NULL); return NULL; } @@ -853,8 +840,8 @@ static void xen_block_iothread_destroy(XenBlockIOThread *iothread, static XenBlockIOThread *xen_block_iothread_create(const char *id, Error **errp) { + ERRP_GUARD(); XenBlockIOThread *iothread = g_new(XenBlockIOThread, 1); - Error *local_err = NULL; QDict *opts; QObject *ret_data = NULL; @@ -863,13 +850,11 @@ static XenBlockIOThread *xen_block_iothread_create(const char *id, opts = qdict_new(); qdict_put_str(opts, "qom-type", TYPE_IOTHREAD); qdict_put_str(opts, "id", id); - qmp_object_add(opts, &ret_data, &local_err); + qmp_object_add(opts, &ret_data, errp); qobject_unref(opts); qobject_unref(ret_data); - if (local_err) { - error_propagate(errp, local_err); - + if (*errp) { g_free(iothread->id); g_free(iothread); return NULL; @@ -881,6 +866,7 @@ static XenBlockIOThread *xen_block_iothread_create(const char *id, static void xen_block_device_create(XenBackendInstance *backend, QDict *opts, Error **errp) { + ERRP_GUARD(); XenBus *xenbus = xen_backend_get_bus(backend); const char *name = xen_backend_get_name(backend); unsigned long number; @@ -888,7 +874,6 @@ static void xen_block_device_create(XenBackendInstance *backend, XenBlockDrive *drive = NULL; XenBlockIOThread *iothread = NULL; XenDevice *xendev = NULL; - Error *local_err = NULL; const char *type; XenBlockDevice *blockdev; @@ -920,52 +905,45 @@ static void xen_block_device_create(XenBackendInstance *backend, goto fail; } - drive = xen_block_drive_create(vdev, device_type, opts, &local_err); + drive = xen_block_drive_create(vdev, device_type, opts, errp); if (!drive) { - error_propagate_prepend(errp, local_err, "failed to create drive: "); + error_prepend(errp, "failed to create drive: "); goto fail; } - iothread = xen_block_iothread_create(vdev, &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, - "failed to create iothread: "); + iothread = xen_block_iothread_create(vdev, errp); + if (*errp) { + error_prepend(errp, "failed to create iothread: "); goto fail; } xendev = XEN_DEVICE(qdev_new(type)); blockdev = XEN_BLOCK_DEVICE(xendev); - object_property_set_str(OBJECT(xendev), vdev, "vdev", &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, "failed to set 'vdev': "); + if (!object_property_set_str(OBJECT(xendev), "vdev", vdev, + errp)) { + error_prepend(errp, "failed to set 'vdev': "); goto fail; } - object_property_set_str(OBJECT(xendev), - xen_block_drive_get_node_name(drive), "drive", - &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, "failed to set 'drive': "); + if (!object_property_set_str(OBJECT(xendev), "drive", + xen_block_drive_get_node_name(drive), + errp)) { + error_prepend(errp, "failed to set 'drive': "); goto fail; } - object_property_set_str(OBJECT(xendev), iothread->id, "iothread", - &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, - "failed to set 'iothread': "); + if (!object_property_set_str(OBJECT(xendev), "iothread", iothread->id, + errp)) { + error_prepend(errp, "failed to set 'iothread': "); goto fail; } blockdev->iothread = iothread; blockdev->drive = drive; - qdev_realize_and_unref(DEVICE(xendev), BUS(xenbus), &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, - "realization of device %s failed: ", - type); + if (!qdev_realize_and_unref(DEVICE(xendev), BUS(xenbus), errp)) { + error_prepend(errp, "realization of device %s failed: ", type); goto fail; } @@ -989,31 +967,29 @@ fail: static void xen_block_device_destroy(XenBackendInstance *backend, Error **errp) { + ERRP_GUARD(); XenDevice *xendev = xen_backend_get_device(backend); XenBlockDevice *blockdev = XEN_BLOCK_DEVICE(xendev); XenBlockVdev *vdev = &blockdev->props.vdev; XenBlockDrive *drive = blockdev->drive; XenBlockIOThread *iothread = blockdev->iothread; - Error *local_err = NULL; trace_xen_block_device_destroy(vdev->number); object_unparent(OBJECT(xendev)); if (iothread) { - xen_block_iothread_destroy(iothread, &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, - "failed to destroy iothread: "); + xen_block_iothread_destroy(iothread, errp); + if (*errp) { + error_prepend(errp, "failed to destroy iothread: "); return; } } if (drive) { - xen_block_drive_destroy(drive, &local_err); - if (local_err) { - error_propagate_prepend(errp, local_err, - "failed to destroy drive: "); + xen_block_drive_destroy(drive, errp); + if (*errp) { + error_prepend(errp, "failed to destroy drive: "); return; } } |