sys_pwritev
{ .sy_narg = AS(pwritev_args), .sy_call = (sy_call_t *)sys_pwritev, .sy_auevent = AUE_PWRITEV, .sy_flags = SYF_CAPENABLED, .sy_thrcnt = SY_THR_STATIC }, /* 290 = pwritev */
int sys_pwritev(struct thread *, struct pwritev_args *);