lib: use fstat() as fallback in blkdev_get_size()

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/blkdev.c b/lib/blkdev.c
index 824a87c4..aa323f21 100644
--- a/lib/blkdev.c
+++ b/lib/blkdev.c
@@ -138,6 +138,15 @@ blkdev_get_size(int fd, unsigned long long *bytes)
 	}
 #endif /* HAVE_SYS_DISKLABEL_H */
 
+	{
+		struct stat st;
+
+		if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode)) {
+			*bytes = st.st_size;
+			return 0;
+		}
+	}
+
 	*bytes = blkdev_find_size(fd);
 	return 0;
 }