hblock
static union hblock savedblock; /* to ensure same file across volumes */
static void write_ancillary(union hblock *, char *, int, char);
checksum_signed(union hblock *dblockp)
checksum(union hblock *dblockp)
checksum(union hblock *dblockp)
static int checksum(union hblock *dblockp);
static int checksum_signed(union hblock *dblockp);
write_ancillary(union hblock *dblockp, char *secinfo, int len, char hdrtype)
if ((tbuf = (union hblock *)
calloc(sizeof (union hblock) * nblock, sizeof (char))) ==
(union hblock *)NULL) {