file_read
if ( file_read( tmp.mod_values[i] + 6,
if (file_read(png, ihdr, 1, 13+4) != 13+4)
if (file_read(png, header, 1, 8) != 8) {
if (file_read(png, png->readbuf, 1, length) != len)
(void) file_read(png, 0, 1, length + 4); /* unknown chunk */
if (file_read(png, buf, 1, 4) != 4)