COPY_BSIZE
long inbuf[ COPY_BSIZE/4 ]; /* long to speed checks */
if (bsize > 0 && bsize <= COPY_BSIZE)
bsize = COPY_BSIZE;
char srcbuf[ COPY_BSIZE ], dstbuf[ COPY_BSIZE ];
count = read(sfd, srcbuf, COPY_BSIZE);
count = read(sfd, srcbuf, COPY_BSIZE)) {
if (read(dfd, dstbuf, COPY_BSIZE) != count) {