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[exim.git] / src / OS / os.h-FreeBSD

/* Exim: OS-specific C header file for FreeBSD */
/* Copyright (c) University of Cambridge 1995 - 2018 */
/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */


#include <sys/types.h>
#include <sys/param.h>

#define HAVE_BSD_GETLOADAVG
#define HAVE_SETCLASSRESOURCES
#define HAVE_MMAP
#define HAVE_SYS_MOUNT_H
#define SIOCGIFCONF_GIVES_ADDR
#define HAVE_SRANDOMDEV
#define HAVE_ARC4RANDOM

/* Applications should not call arc4random_stir() explicitly after
 * FreeBSD r227520 (approximately 1000002).
 * Set NOT_HAVE_ARC4RANDOM_STIR if the version released is past
 * that point. */
#if __FreeBSD_version >= 1000002
# define NOT_HAVE_ARC4RANDOM_STIR
#endif

typedef struct flock flock_t;

/* iconv arg2 type: libiconv in Ports uses "const char* * inbuf" and was
 * traditionally the only approach available.  The iconv functionality
 * in libc is "char ** restrict src".
 *
 * <https://www.freebsd.org/doc/en/books/porters-handbook/using-iconv.html>
 * says that libc has iconv since 2013, in 10-CURRENT.  FreeBSD man-pages
 * shows it included in 10.0-RELEASE.  Writing this in 2017, 10.3 is the
 * oldest supported release, so we should assume non-libiconv by default.
 * (Actually, people still using old releases past EOL; we shouldn't support
 * them but I don't want to deal with howls of complaints because we dare
 * to not support the unsupported, so guard this on FreeBSD 10+)
 *
 * Thus we no longer override iconv.
 *
 * However, if libiconv is installed, and anything adds /usr/local/include
 * to include-path (likely) then we'll get that.  So define a variable
 * which makes the libiconv try to not interfere with OS iconv.
 */
#if __FreeBSD__ >= 10
# define LIBICONV_PLUG
#endif
/* for more specific version constraints, look at __FreeBSD_version
 * from <sys/param.h> */

/* When using DKIM, setting OS_SENDFILE can increase
performance on outgoing mail a bit. */

#define OS_SENDFILE
extern ssize_t os_sendfile(int, int, off_t *, size_t);


/*******************/

#define EXIM_TFO_PROBE
#define EXIM_TFO_FREEBSD


/* for TCP state-variable values, for TFO logging */
#include <netinet/tcp_fsm.h>
#define TCP_SYN_RECV TCPS_SYN_RECEIVED

/*******************/

/* End */