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hw: Convert from BlockDriverState to BlockBackend, mostly

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Device models should access their block backends only through the
block-backend.h API.  Convert them, and drop direct includes of
inappropriate headers.

Just four uses of BlockDriverState are left:

* The Xen paravirtual block device backend (xen_disk.c) opens images
  itself when set up via xenbus, bypassing blockdev.c.  I figure it
  should go through qmp_blockdev_add() instead.

* Device model "usb-storage" prompts for keys.  No other device model
  does, and this one probably shouldn't do it, either.

* ide_issue_trim_cb() uses bdrv_aio_discard() instead of
  blk_aio_discard() because it fishes its backend out of a BlockAIOCB,
  which has only the BlockDriverState.

* PC87312State has an unused BlockDriverState[] member.

The next two commits take care of the latter two.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2014-10-07 13:59:18 +02:00 • committed by Kevin Wolf
parent 2a30307f70
commit 4be746345f
110 changed files with 1127 additions and 798 deletions
Download patch file Download diff file Expand all files Collapse all files

26
hw/core/qdev-properties-system.c
View file

@ -13,6 +13,7 @@
#include "net/net.h"
#include "hw/qdev.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "net/hub.h"
@ -68,16 +69,16 @@ static void set_pointer(Object *obj, Visitor *v, Property *prop,
static int parse_drive(DeviceState *dev, const char *str, void **ptr)
{
BlockDriverState *bs;
BlockBackend *blk;
bs = bdrv_find(str);
if (bs == NULL) {
blk = blk_by_name(str);
if (!blk) {
return -ENOENT;
}
if (bdrv_attach_dev(bs, dev) < 0) {
if (blk_attach_dev(blk, dev) < 0) {
return -EEXIST;
}
*ptr = bs;
*ptr = blk;
return 0;
}
@ -85,17 +86,17 @@ static void release_drive(Object *obj, const char *name, void *opaque)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
BlockBackend **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr) {
bdrv_detach_dev(*ptr, dev);
blk_detach_dev(*ptr, dev);
blockdev_auto_del(*ptr);
}
}
static char *print_drive(void *ptr)
{
return g_strdup(bdrv_get_device_name(ptr));
return g_strdup(blk_name(ptr));
}
static void get_drive(Object *obj, Visitor *v, void *opaque,
@ -335,12 +336,11 @@ PropertyInfo qdev_prop_vlan = {
};
int qdev_prop_set_drive(DeviceState *dev, const char *name,
BlockDriverState *value)
BlockBackend *value)
{
Error *err = NULL;
const char *bdrv_name = value ? bdrv_get_device_name(value) : "";
object_property_set_str(OBJECT(dev), bdrv_name,
name, &err);
object_property_set_str(OBJECT(dev),
value ? blk_name(value) : "", name, &err);
if (err) {
qerror_report_err(err);
error_free(err);
@ -350,7 +350,7 @@ int qdev_prop_set_drive(DeviceState *dev, const char *name,
}
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
BlockDriverState *value)
BlockBackend *value)
{
if (qdev_prop_set_drive(dev, name, value) < 0) {
exit(1);