taglinefilesource code
BUF_SIZE611net/unix/sock.cif (cando >(part = BUF_SIZE - upd->bp_tail)) cando = part;
BUF_SIZE617net/unix/sock.cupd->bp_tail =(upd->bp_tail + cando) &(BUF_SIZE-1);
BUF_SIZE687net/unix/sock.cif (cando >(part = BUF_SIZE - pupd->bp_head)) cando = part;
BUF_SIZE694net/unix/sock.cpupd->bp_head =(pupd->bp_head + cando) &(BUF_SIZE-1);
BUF_SIZE57net/unix/unix.h(BUF_SIZE-1))
BUF_SIZE58net/unix/unix.h#define UN_BUF_SPACE(UPD)  ((BUF_SIZE-1) - UN_BUF_AVAIL(UPD))