writetbuf
(void) writetbuf((char *)&dblock, 1);
(void) writetbuf((char *)&dblock, 1);
hint = writetbuf((char *)&dblock, 1);
hint = writetbuf(bigbuf, nblks);
(void) writetbuf((char *)&dblock, 1);
(void) writetbuf((char *)&dblock, 1);
(void) writetbuf((char *)&dblock, 1);
(void) writetbuf((char *)&dblock, 1);
(void) writetbuf(buf, 1);
(void) writetbuf(buf, 1);
static int writetbuf(char *buffer, int n);
(void) writetbuf((char *)&xhdr_buf, 1);
(void) writetbuf(xrec_ptr, nblks);
(void) writetbuf((char *)dblockp, 1);
(void) writetbuf((char *)secinfo, TBLOCKS(len));
(void) writetbuf((char *)&dblock, 1);