writev
device_writev_hook writev;
ssize_t writev(int fd, const struct iovec *vector, int count);
op_writev *writev;
beos_op_writev *writev;
writev(fd, wbuf, vec);
writev(fd, wbuf, vec);
writev(fd, wbuf, vec);
len = writev(d, wbuf, vec);
# define haiku_host_platform_writev writev
# define haiku_host_platform_writev writev
ssize_t written = writev(fd, vecs, vecCount);
bytes = writev(fd, str->iovCur, str->iovCurCount);
(void)writev(STDERR_FILENO, iov, (int)((v - iov) + 1));
if (writev(statp->_vcsock, iov, 2) != (ssize_t)(INT16SZ + buflen)) {
(void) writev (fd, iov, n)
ret = writev(fd, &vec1, 0x80000001);
ret = writev(fd, &vec2, 1);
ret = writev(fd, &vec3, 0xfff);
ssize_t written = writev(sPcapFD, vecs, used);
return writev(fd, systemVecs, count);