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block: Add errp to BD.bdrv_truncate()

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Add an Error parameter to the block drivers' bdrv_truncate() interface.
If a block driver does not set this in case of an error, the generic
bdrv_truncate() implementation will do so.

Where it is obvious, this patch also makes some block drivers set this
value.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170328205129.15138-4-mreitz@redhat.com
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2017-03-28 22:51:28 +02:00
parent ed3d2ec98a
commit 4bff28b81a
14 changed files with 31 additions and 31 deletions
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4
block.c
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@ -3328,13 +3328,13 @@ int bdrv_truncate(BdrvChild *child, int64_t offset, Error **errp)
return -EACCES;
}
ret = drv->bdrv_truncate(bs, offset);
ret = drv->bdrv_truncate(bs, offset, errp);
if (ret == 0) {
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
bdrv_dirty_bitmap_truncate(bs);
bdrv_parent_cb_resize(bs);
++bs->write_gen;
} else {
} else if (errp && !*errp) {
error_setg_errno(errp, -ret, "Failed to resize image");
}
return ret;