From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38448) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcxWS-0007QI-SE for qemu-devel@nongnu.org; Fri, 18 Sep 2015 11:24:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZcxWS-00065s-3i for qemu-devel@nongnu.org; Fri, 18 Sep 2015 11:24:24 -0400 From: Max Reitz Date: Fri, 18 Sep 2015 17:22:56 +0200 Message-Id: <1442589793-7105-22-git-send-email-mreitz@redhat.com> In-Reply-To: <1442589793-7105-1-git-send-email-mreitz@redhat.com> References: <1442589793-7105-1-git-send-email-mreitz@redhat.com> Subject: [Qemu-devel] [PATCH v5 21/38] block: Add blk_insert_bs() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: Kevin Wolf , Alberto Garcia , Markus Armbruster , qemu-devel@nongnu.org, Max Reitz , John Snow , Stefan Hajnoczi This function associates the given BlockDriverState with the given BlockBackend. Signed-off-by: Max Reitz Reviewed-by: Eric Blake Reviewed-by: Alberto Garcia --- block/block-backend.c | 16 ++++++++++++++++ include/sysemu/block-backend.h | 1 + 2 files changed, 17 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 33145f8..652385e 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -314,6 +314,22 @@ 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) +{ + if (bs->blk == blk) { + return; + } + + assert(!blk->bs); + assert(!bs->blk); + bdrv_ref(bs); + blk->bs = bs; + bs->blk = blk; +} + +/* * Attach device model @dev to @blk. * Return 0 on success, -EBUSY when a device model is attached already. */ diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 52e35a1..9306a52 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -72,6 +72,7 @@ BlockBackend *blk_by_name(const char *name); BlockBackend *blk_next(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); -- 2.5.2