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block: Attach non-qdev devices as well

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For now, this just protects against programming errors like having the
same drive back multiple non-qdev devices, or untimely bdrv_delete().
Later commits will add other interesting uses.

While there, rename BlockDriverState member peer to dev, bdrv_attach()
to bdrv_attach_dev(), bdrv_detach() to bdrv_detach_dev(), and
bdrv_get_attached() to bdrv_get_attached_dev().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2011-08-03 15:07:40 +02:00 • committed by Kevin Wolf
parent 648fb0ea5e
commit fa879d62eb
12 changed files with 39 additions and 22 deletions
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5
blockdev.c
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@ -14,7 +14,6 @@
#include "qemu-option.h"
#include "qemu-config.h"
#include "sysemu.h"
#include "hw/qdev.h"
#include "block_int.h"
static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
@ -738,12 +737,12 @@ int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
bdrv_flush(bs);
bdrv_close(bs);
/* if we have a device associated with this BlockDriverState (bs->peer)
/* if we have a device attached to this BlockDriverState
* then we need to make the drive anonymous until the device
* can be removed. If this is a drive with no device backing
* then we can just get rid of the block driver state right here.
*/
if (bs->peer) {
if (bdrv_get_attached_dev(bs)) {
bdrv_make_anon(bs);
} else {
drive_uninit(drive_get_by_blockdev(bs));