src/OS/os.h-FreeBSD

   1 /* Exim: OS-specific C header file for FreeBSD */
   2
   3 #include <sys/types.h>
   4
   5 #define HAVE_BSD_GETLOADAVG
   6 #define HAVE_SETCLASSRESOURCES
   7 #define HAVE_MMAP
   8 #define HAVE_SYS_MOUNT_H
   9 #define SIOCGIFCONF_GIVES_ADDR
  10 #define HAVE_SRANDOMDEV
  11 #define HAVE_ARC4RANDOM
  12
  13 typedef struct flock flock_t;
  14
  15 /* iconv arg2 type: libiconv in Ports uses "const char* * inbuf" and was
  16  * traditionally the only approach available.  The iconv functionality
  17  * in libc is "char ** restrict src".
  18  *
  19  * <https://www.freebsd.org/doc/en/books/porters-handbook/using-iconv.html>
  20  * says that libc has iconv since 2013, in 10-CURRENT.  FreeBSD man-pages
  21  * shows it included in 10.0-RELEASE.  Writing this in 2017, 10.3 is the
  22  * oldest supported release, so we should assume non-libiconv by default.
  23  * (Actually, people still using old releases past EOL; we shouldn't support
  24  * them but I don't want to deal with howls of complaints because we dare
  25  * to not support the unsupported, so guard this on FreeBSD 10+)
  26  *
  27  * Thus we no longer override iconv.
  28  *
  29  * However, if libiconv is installed, and anything adds /usr/local/include
  30  * to include-path (likely) then we'll get that.  So define a variable
  31  * which makes the libiconv try to not interfere with OS iconv.
  32  */
  33 #if __FreeBSD__ >= 10
  34 # define LIBICONV_PLUG
  35 #endif
  36 /* for more specific version constraints, include <sys/param.h> and look at
  37  * __FreeBSD_version */
  38
  39
  40 /* When using DKIM, setting OS_SENDFILE can increase
  41 performance on outgoing mail a bit. */
  42
  43 #define OS_SENDFILE
  44 extern ssize_t os_sendfile(int, int, off_t *, size_t);
  45
  46
  47 /*******************/
  48
  49 /* TCP_FASTOPEN support.  There does not seems to be a
  50 MSG_FASTOPEN defined yet... */
  51
  52 #include <netinet/tcp.h>        /* for TCP_FASTOPEN */
  53 #include <sys/socket.h>         /* for MSG_FASTOPEN */
  54 #if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN)
  55 # define MSG_FASTOPEN 0x20000000
  56 #endif
  57
  58 /* for TCP state-variable values, for TFO logging */
  59 #include <netinet/tcp_fsm.h>
  60 #define TCP_SYN_RECV TCPS_SYN_RECEIVED
  61
  62 /*******************/
  63
  64 /* End */