/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/internal.h"
#include "libc/sock/internal.h"
#include "libc/sock/yoink.inc"

/**
 * Performs recv(), recvfrom(), or readv() on Windows NT.
 *
 * @param fd must be a socket
 * @return number of bytes received, or -1 w/ errno
 */
textwindows ssize_t sys_recvfrom_nt(struct Fd *fd, const struct iovec *iov,
                                    size_t iovlen, uint32_t flags,
                                    void *opt_out_srcaddr,
                                    uint32_t *opt_inout_srcaddrsize) {
  uint32_t got;
  struct NtIovec iovnt[16];
  got = 0;
  if (WSARecvFrom(fd->handle, iovnt, __iovec2nt(iovnt, iov, iovlen), &got,
                  &flags, opt_out_srcaddr, opt_inout_srcaddrsize, NULL,
                  NULL) != -1) {
    return got;
  } else {
    return __winsockerr();
  }
}
