src/OS/os.h-FreeBSD

   1 /* Exim: OS-specific C header file for FreeBSD */
   2 /* Copyright (c) University of Cambridge 1995 - 2018 */
   3 /* Copyright (c) The Exim Maintainers 2020 */
   4 /* See the file NOTICE for conditions of use and distribution. */
   5
   6
   7 #include <sys/types.h>
   8 #include <sys/param.h>
   9
  10 #define HAVE_BSD_GETLOADAVG
  11 #define HAVE_SETCLASSRESOURCES
  12 #define HAVE_MMAP
  13 #define HAVE_SYS_MOUNT_H
  14 #define SIOCGIFCONF_GIVES_ADDR
  15 #define HAVE_SRANDOMDEV
  16 #define HAVE_ARC4RANDOM
  17
  18 /* Applications should not call arc4random_stir() explicitly after
  19  * FreeBSD r227520 (approximately 1000002).
  20  * Set NOT_HAVE_ARC4RANDOM_STIR if the version released is past
  21  * that point. */
  22 #if __FreeBSD_version >= 1000002
  23 # define NOT_HAVE_ARC4RANDOM_STIR
  24 #endif
  25
  26 typedef struct flock flock_t;
  27
  28 /* iconv arg2 type: libiconv in Ports uses "const char* * inbuf" and was
  29  * traditionally the only approach available.  The iconv functionality
  30  * in libc is "char ** restrict src".
  31  *
  32  * <https://www.freebsd.org/doc/en/books/porters-handbook/using-iconv.html>
  33  * says that libc has iconv since 2013, in 10-CURRENT.  FreeBSD man-pages
  34  * shows it included in 10.0-RELEASE.  Writing this in 2017, 10.3 is the
  35  * oldest supported release, so we should assume non-libiconv by default.
  36  * (Actually, people still using old releases past EOL; we shouldn't support
  37  * them but I don't want to deal with howls of complaints because we dare
  38  * to not support the unsupported, so guard this on FreeBSD 10+)
  39  *
  40  * Thus we no longer override iconv.
  41  *
  42  * However, if libiconv is installed, and anything adds /usr/local/include
  43  * to include-path (likely) then we'll get that.  So define a variable
  44  * which makes the libiconv try to not interfere with OS iconv.
  45  */
  46 #if __FreeBSD__ >= 10
  47 # define LIBICONV_PLUG
  48 #endif
  49 /* for more specific version constraints, look at __FreeBSD_version
  50  * from <sys/param.h> */
  51
  52 /* When using DKIM, setting OS_SENDFILE can increase
  53 performance on outgoing mail a bit. */
  54
  55 #define OS_SENDFILE
  56 extern ssize_t os_sendfile(int, int, off_t *, size_t);
  57
  58
  59 /*******************/
  60
  61 #define EXIM_TFO_PROBE
  62 #define EXIM_TFO_FREEBSD
  63
  64
  65 /* for TCP state-variable values, for TFO logging */
  66 #include <netinet/tcp_fsm.h>
  67 #define TCP_SYN_RECV TCPS_SYN_RECEIVED
  68
  69 /*******************/
  70
  71 /* End */