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block: Add errp to bdrv_new()

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This patch adds an errp parameter to bdrv_new() and updates all its
callers. The next patches will make use of this in order to check for
duplicate IDs. Most of the callers know that their ID is fine, so they
can simply assert that there is no error.

Behaviour doesn't change with this patch yet as bdrv_new() doesn't
actually assign errors to errp.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf 2014-04-17 13:16:01 +02:00
parent 5ff679b47d
commit 98522f63f4
9 changed files with 24 additions and 15 deletions
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7
hw/block/xen_disk.c
View file

@ -817,11 +817,14 @@ static int blk_connect(struct XenDevice *xendev)
index = (blkdev->xendev.dev - 202 * 256) / 16;
blkdev->dinfo = drive_get(IF_XEN, 0, index);
if (!blkdev->dinfo) {
Error *local_err = NULL;
/* setup via xenbus -> create new block driver instance */
xen_be_printf(&blkdev->xendev, 2, "create new bdrv (xenbus setup)\n");
blkdev->bs = bdrv_new(blkdev->dev);
blkdev->bs = bdrv_new(blkdev->dev, &local_err);
if (local_err) {
blkdev->bs = NULL;
}
if (blkdev->bs) {
Error *local_err = NULL;
BlockDriver *drv = bdrv_find_whitelisted_format(blkdev->fileproto,
readonly);
if (bdrv_open(&blkdev->bs, blkdev->filename, NULL, NULL, qflags,