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block: Add blk_insert_bs() 

This function associates the given BlockDriverState with the given
BlockBackend.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2015-10-19 17:53:28 +02:00 committed by Kevin Wolf
parent a46fc9c950
commit 0c3c36d651
2 changed files with 12 additions and 0 deletions
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11
block/block-backend.c
View File

@ -333,6 +333,17 @@ void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk)
} }
} }
/*
* Associates a new BlockDriverState with @blk.
*/
void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs)
{
assert(!blk->bs && !bs->blk);
bdrv_ref(bs);
blk->bs = bs;
bs->blk = blk;
}
/* /*
* Attach device model @dev to @blk. * Attach device model @dev to @blk.
* Return 0 on success, -EBUSY when a device model is attached already. * Return 0 on success, -EBUSY when a device model is attached already.

1
include/sysemu/block-backend.h
View File

@ -72,6 +72,7 @@ BlockBackend *blk_by_name(const char *name);
BlockBackend *blk_next(BlockBackend *blk); BlockBackend *blk_next(BlockBackend *blk);
BlockDriverState *blk_bs(BlockBackend *blk); BlockDriverState *blk_bs(BlockBackend *blk);
void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs);
void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk); void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk);