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-rw-r--r--block.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/block.c b/block.c
index 24a25d569b..9549b9eff9 100644
--- a/block.c
+++ b/block.c
@@ -1147,6 +1147,25 @@ int bdrv_truncate(BlockDriverState *bs, int64_t offset)
}
/**
+ * Length of a allocated file in bytes. Sparse files are counted by actual
+ * allocated space. Return < 0 if error or unknown.
+ */
+int64_t bdrv_get_allocated_file_size(BlockDriverState *bs)
+{
+ BlockDriver *drv = bs->drv;
+ if (!drv) {
+ return -ENOMEDIUM;
+ }
+ if (drv->bdrv_get_allocated_file_size) {
+ return drv->bdrv_get_allocated_file_size(bs);
+ }
+ if (bs->file) {
+ return bdrv_get_allocated_file_size(bs->file);
+ }
+ return -ENOTSUP;
+}
+
+/**
* Length of a file in bytes. Return < 0 if error or unknown.
*/
int64_t bdrv_getlength(BlockDriverState *bs)