src/OS/os.c-FreeBSD

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) Jeremy Harris 1995 - 2019 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8 /* FreeBSD-specific code. This is concatenated onto the generic
   9 src/os.c file. */
  10
  11
  12 /*************
  13 Sendfile shim
  14 *************/
  15
  16 ssize_t
  17 os_sendfile(int out, int in, off_t * offp, size_t cnt)
  18 {
  19 off_t loff = *offp, written;
  20
  21 if (sendfile(in, out, loff, cnt, NULL, &written, 0) < 0) return (ssize_t)-1;
  22 *offp = loff + written;
  23 return (ssize_t)written;
  24 }
  25
  26 /*************************************************
  27 TCP Fast Open:  check that the ioctl is accepted
  28 *************************************************/
  29
  30 #ifndef COMPILE_UTILITY
  31 void
  32 tfo_probe(void)
  33 {
  34 # ifdef TCP_FASTOPEN
  35 int sock;
  36
  37 if (  (sock = socket(AF_INET, SOCK_STREAM, 0)) >= 0
  38    && setsockopt(sock, IPPROTO_TCP, TCP_FASTOPEN, &on, sizeof(on) >= 0)
  39    )
  40   f.tcp_fastopen_ok = TRUE;
  41 close(sock);
  42 # endif
  43 }
  44 #endif
  45
  46
  47 /* End of os.c-Linux */