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block: Error parameter for open functions

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Add an Error ** parameter to bdrv_open, bdrv_file_open and associated
functions to allow more specific error messages.

Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2013-09-05 14:45:29 +02:00 • committed by Kevin Wolf
parent d5124c00d8
commit 34b5d2c68e
17 changed files with 163 additions and 85 deletions
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7
hw/block/xen_disk.c
View file

@ -809,10 +809,15 @@ static int blk_connect(struct XenDevice *xendev)
xen_be_printf(&blkdev->xendev, 2, "create new bdrv (xenbus setup)\n");
blkdev->bs = bdrv_new(blkdev->dev);
if (blkdev->bs) {
Error *local_err = NULL;
BlockDriver *drv = bdrv_find_whitelisted_format(blkdev->fileproto,
readonly);
if (bdrv_open(blkdev->bs,
blkdev->filename, NULL, qflags, drv) != 0) {
blkdev->filename, NULL, qflags, drv, &local_err) != 0)
{
xen_be_printf(&blkdev->xendev, 0, "error: %s\n",
error_get_pretty(local_err));
error_free(local_err);
bdrv_unref(blkdev->bs);
blkdev->bs = NULL;
}