This function skips to the next BlockBackend for which blk_is_inserted() is true.
Signed-off-by: Max Reitz <mre...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> --- block/block-backend.c | 15 +++++++++++++++ include/sysemu/block-backend.h | 1 + 2 files changed, 16 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index e2e70d2..ab3affa 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -236,6 +236,21 @@ BlockBackend *blk_next(BlockBackend *blk) } /* + * Like blk_next(), but skips all non-inserted BlockBackends (that is, + * BlockBackends for which blk_is_inserted() returns false) + */ +BlockBackend *blk_next_inserted(BlockBackend *blk) +{ + while ((blk = blk_next(blk)) != NULL) { + if (blk_is_inserted(blk)) { + break; + } + } + + return blk; +} + +/* * Return @blk's name, a non-null string. * Wart: the name is empty iff @blk has been hidden with * blk_hide_on_behalf_of_do_drive_del(). diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index b9eae9b..8b4a9ec 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -72,6 +72,7 @@ const char *blk_name(BlockBackend *blk); BlockBackend *blk_by_name(const char *name); bool blk_name_taken(const char *name); BlockBackend *blk_next(BlockBackend *blk); +BlockBackend *blk_next_inserted(BlockBackend *blk); BlockDriverState *blk_bs(BlockBackend *blk); void blk_remove_bs(BlockBackend *blk); -- 2.1.0