Commit 04df765a authored by Fam Zheng's avatar Fam Zheng Committed by Kevin Wolf
Browse files

block: Add bdrv_next_node 



Similar to bdrv_next, this traverses through graph_bdrv_states. Will be
useful to enumerate all the named nodes.

Signed-off-by: default avatarFam Zheng <famz@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarMax Reitz <mreitz@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 7fb8da2b

block.c

+8 −0
Original line number Diff line number Diff line
@@ -3801,6 +3801,14 @@ bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base) 
    return top != NULL;

}



BlockDriverState *bdrv_next_node(BlockDriverState *bs)

{

    if (!bs) {

        return QTAILQ_FIRST(&graph_bdrv_states);

    }

    return QTAILQ_NEXT(bs, node_list);

}



BlockDriverState *bdrv_next(BlockDriverState *bs)

{

    if (!bs) {

include/block/block.h

+1 −0
Original line number Diff line number Diff line
@@ -374,6 +374,7 @@ BlockDriverState *bdrv_lookup_bs(const char *device, 
                                 const char *node_name,

                                 Error **errp);

bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base);

BlockDriverState *bdrv_next_node(BlockDriverState *bs);

BlockDriverState *bdrv_next(BlockDriverState *bs);

int bdrv_is_encrypted(BlockDriverState *bs);

int bdrv_key_required(BlockDriverState *bs);