aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--block/raw-format.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/block/raw-format.c b/block/raw-format.c
index 1ea8c2d..a1622c6 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -312,6 +312,31 @@ static int64_t raw_getlength(BlockDriverState *bs)
return s->size;
}
+static BlockMeasureInfo *raw_measure(QemuOpts *opts, BlockDriverState *in_bs,
+ Error **errp)
+{
+ BlockMeasureInfo *info;
+ int64_t required;
+
+ if (in_bs) {
+ required = bdrv_getlength(in_bs);
+ if (required < 0) {
+ error_setg_errno(errp, -required, "Unable to get image size");
+ return NULL;
+ }
+ } else {
+ required = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+ BDRV_SECTOR_SIZE);
+ }
+
+ info = g_new(BlockMeasureInfo, 1);
+ info->required = required;
+
+ /* Unallocated sectors count towards the file size in raw images */
+ info->fully_allocated = info->required;
+ return info;
+}
+
static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
return bdrv_get_info(bs->file->bs, bdi);
@@ -479,6 +504,7 @@ BlockDriver bdrv_raw = {
.bdrv_truncate = &raw_truncate,
.bdrv_getlength = &raw_getlength,
.has_variable_length = true,
+ .bdrv_measure = &raw_measure,
.bdrv_get_info = &raw_get_info,
.bdrv_refresh_limits = &raw_refresh_limits,
.bdrv_probe_blocksizes = &raw_probe_blocksizes,