__os_read
if ((ret = __os_read(fd, mbuf, sizeof(mbuf), &nr)) != 0)
__os_read(infop->fd, &rl, sizeof(rl), &nr)) != 0)
if ((ret = __os_read(fd, &rl, sizeof(rl), &nr)) != 0)
int __os_read __P((int, void *, size_t, ssize_t *));
(ret = __os_read(fd, &persist, sizeof(LOGP), &nw)) != 0 ||
if ((ret = __os_read(dblp->c_fd, &hdr, sizeof(HDR), &nr)) != 0) {
if ((ret = __os_read(dblp->c_fd, tbuf, len, &nr)) != 0) {
__os_read(db_iop->fd_io, db_iop->buf, db_iop->bytes, niop);