diff --git a/fs/fs.c b/fs/fs.c
index 32dba8cf0..1b43c616b 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -60,7 +60,8 @@ again:
 	if (fd < 0)
 		goto err_out;
 
-	if (read(fd, buf, s.st_size) < s.st_size)
+	ret = read_full(fd, buf, s.st_size);
+	if (ret < 0)
 		goto err_out1;
 
 	close(fd);