From e907ff3d4cb7fd20d402f45355059e67d0dc93e7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 24 Nov 2021 17:15:34 +0100 Subject: [PATCH 11/12] hw/block/fdc: Extract blk_create_empty_drive() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We are going to re-use this code in the next commit, so extract it as a new blk_create_empty_drive() function. Inspired-by: Hanna Reitz Signed-off-by: Philippe Mathieu-Daudé Message-id: 20211124161536.631563-2-philmd@redhat.com Signed-off-by: John Snow Upstream-Status: Backport [b154791e7b6d4ca5cdcd54443484d97360bd7ad2] CVE: CVE-2021-20196 Signed-off-by: Sakib Sajal --- hw/block/fdc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/block/fdc.c b/hw/block/fdc.c index 4c2c35e22..854b4f172 100644 --- a/hw/block/fdc.c +++ b/hw/block/fdc.c @@ -61,6 +61,12 @@ } while (0) +/* Anonymous BlockBackend for empty drive */ +static BlockBackend *blk_create_empty_drive(void) +{ + return blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); +} + /********************************************************/ /* qdev floppy bus */ @@ -543,8 +549,7 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp) } if (!dev->conf.blk) { - /* Anonymous BlockBackend for an empty drive */ - dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); + dev->conf.blk = blk_create_empty_drive(); ret = blk_attach_dev(dev->conf.blk, qdev); assert(ret == 0); -- 2.31.1