        function startReads() {
          let reads = 0;
          let psrc = 0;
          while (pdst < fsize && reads < concurrency) {
            const chunk =
              (pdst + chunkSize > fsize ? fsize - pdst : chunkSize);
            singleRead(psrc, pdst, chunk);
            psrc += chunk;
            pdst += chunk;
            ++reads;
          }
        }
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.