xref: /illumos-gate/usr/src/cmd/sendmail/include/sm/conf.h (revision bbf21555)

/*
 * Copyright (c) 1998-2009 Sendmail, Inc. and its suppliers.
 *	All rights reserved.
 * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 *
 *
 *	$Id: conf.h,v 1.139 2009/06/16 23:41:32 ca Exp $
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
**  CONF.H -- All user-configurable parameters for sendmail
**
**	Send updates to Sendmail.ORG so they will be
**	included in the next release; see
**	http://www.sendmail.org/email-addresses.html
**	for current e-mail address.
*/

#ifndef SM_CONF_H
# define SM_CONF_H 1


# include <sm/config.h>
# include <sm/varargs.h>

/*
**  General "standard C" defines.
**
**	These may be undone later, to cope with systems that claim to
**	be Standard C but aren't.  Gcc is the biggest offender -- it
**	doesn't realize that the library is part of the language.
**
**	Life would be much easier if we could get rid of this sort
**	of bozo problems.
*/

# ifdef __STDC__
#  define HASSETVBUF	1	/* we have setvbuf(3) in libc */
# endif /* __STDC__ */

/*
**  Assume you have standard calls; can be #undefed below if necessary.
*/

# ifndef HASLSTAT
#  define HASLSTAT	1	/* has lstat(2) call */
# endif /* ! HASLSTAT */

# ifndef HASNICE
#  define HASNICE	1	/* has nice(2) call */
# endif /* ! HASNICE */

# ifndef HASRRESVPORT
#  define HASRRESVPORT	1	/* has rrsevport(3) call */
# endif /* ! HASRRESVPORT */

/**********************************************************************
**  "Hard" compilation options.
**	#define these if they are available; comment them out otherwise.
**  These cannot be overridden from the Makefile, and should really not
**  be turned off unless absolutely necessary.
**********************************************************************/

#define LOG		1	/* enable logging -- don't turn off */

/**********************************************************************
**  Operating system configuration.
**
**	Unless you are porting to a new OS, you shouldn't have to
**	change these.
**********************************************************************/

/*
**  HP-UX -- tested for 8.07, 9.00, and 9.01.
**
**	If V4FS is defined, compile for HP-UX 10.0.
**	11.x support from Richard Allen <ra@hp.is>.
*/

# ifdef __hpux
		/* common definitions for HP-UX 9.x and 10.x */
#  undef m_flags		/* conflict between Berkeley DB 1.85 db.h & sys/sysmacros.h on HP 300 */
#  define SYSTEM5	1	/* include all the System V defines */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASSETRESGID	1	/* use setresgid(2) to set saved gid */
#  define BOGUS_O_EXCL	1	/* exclusive open follows symlinks */
#  define seteuid(e)	setresuid(-1, e, -1)
#  define IP_SRCROUTE	1	/* can check IP source routing */
#  define LA_TYPE	LA_HPUX
#  define SPT_TYPE	SPT_PSTAT
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  define GIDSET_T	gid_t
#  define LDA_USE_LOCKF	1
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* getusershell(3) causes core dumps */
#  endif /* ! HASGETUSERSHELL */
#  ifdef HPUX10
#   define _PATH_SENDMAIL	"/usr/sbin/sendmail"
#   ifndef SMRSH_CMDDIR
#    define SMRSH_CMDDIR	"/var/adm/sm.bin"
#   endif /* ! SMRSH_CMDDIR */
#  endif /* HPUX10 */
#  ifdef HPUX11
#   define HASSETREUID	1	/* setreuid(2) works on HP-UX 11.x */
#   define HASFCHOWN	1	/* has fchown(2) */
#   ifndef BROKEN_RES_SEARCH
#    define BROKEN_RES_SEARCH 1	/* res_search(unknown) returns h_errno=0 */
#   endif /* ! BROKEN_RES_SEARCH */
#   ifndef SMRSH_CMDDIR
#    define SMRSH_CMDDIR	"/var/adm/sm.bin"
#   endif /* ! SMRSH_CMDDIR */
#   define _PATH_SENDMAIL	"/usr/sbin/sendmail"
#  else /* HPUX11 */
#   ifndef NOT_SENDMAIL
#    define syslog	hard_syslog
#   endif /* ! NOT_SENDMAIL */
#  endif /* HPUX11 */
#  define SAFENFSPATHCONF 1	/* pathconf(2) pessimizes on NFS filesystems */

#  ifdef V4FS
		/* HP-UX 10.x */
#   define _PATH_UNIX		"/stand/vmunix"
#   ifndef _PATH_VENDOR_CF
#    define _PATH_VENDOR_CF	"/etc/mail/sendmail.cf"
#   endif /* ! _PATH_VENDOR_CF */
#   ifndef _PATH_SENDMAILPID
#    define _PATH_SENDMAILPID	"/etc/mail/sendmail.pid"
#   endif /* ! _PATH_SENDMAILPID */
#   ifndef IDENTPROTO
#    define IDENTPROTO	1	/* TCP/IP implementation fixed in 10.0 */
#   endif /* ! IDENTPROTO */
#   include <sys/mpctl.h>	/* for mpctl() in get_num_procs_online() */
#  else /* V4FS */
		/* HP-UX 9.x */
#   define _PATH_UNIX		"/hp-ux"
#   ifndef _PATH_VENDOR_CF
#    define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#   endif /* ! _PATH_VENDOR_CF */
#   ifndef IDENTPROTO
#    define IDENTPROTO	0	/* TCP/IP implementation is broken */
#   endif /* ! IDENTPROTO */
#   ifdef __STDC__
extern void	hard_syslog(int, char *, ...);
#   else /* __STDC__ */
extern void	hard_syslog();
#   endif /* __STDC__ */
#   define FDSET_CAST	(int *)	/* cast for fd_set parameters to select */
#  endif /* V4FS */

# endif /* __hpux */

/*
**  IBM AIX 5.x
*/

# ifdef _AIX5
#  include <sys/signal.h>
#  include <sys/wait.h>
#  define _AIX4		40300
#  define SOCKADDR_LEN_T socklen_t /* e.g., arg#3 to accept, getsockname */
#  define SOCKOPT_LEN_T	socklen_t /* arg#5 to getsockopt */
#  if _AIX5 >= 50200
#   define HASUNSETENV	1	/* has unsetenv(3) call */
#  endif /* _AIX5 >= 50200 */
# endif /* _AIX5 */

/*
**  IBM AIX 4.x
*/

# ifdef _AIX4
#  define _AIX3		1	/* pull in AIX3 stuff */
#  define BSD4_4_SOCKADDR	/* has sa_len */
#  define USESETEUID	1	/* seteuid(2) works */
#  define TZ_TYPE	TZ_NAME	/* use tzname[] vector */
#  ifndef SOCKOPT_LEN_T
#   define SOCKOPT_LEN_T	size_t	/* arg#5 to getsockopt */
#  endif /* SOCKOPT_LEN_T */
#  if _AIX4 >= 40200
#   define HASSETREUID	1	/* setreuid(2) works as of AIX 4.2 */
#   ifndef SOCKADDR_LEN_T
#    define SOCKADDR_LEN_T	size_t	/* e.g., arg#3 to accept, getsockname */
#   endif /* SOCKADDR_LEN_T */
#  endif /* _AIX4 >= 40200 */
#  if defined(_ILS_MACROS)	/* IBM versions aren't side-effect clean */
#   undef isascii
#   define isascii(c)		!(c & ~0177)
#   undef isdigit
#   define isdigit(__a)		(_IS(__a,_ISDIGIT))
#   undef isspace
#   define isspace(__a)		(_IS(__a,_ISSPACE))
#  endif /* defined(_ILS_MACROS) */
# endif /* _AIX4 */


/*
**  IBM AIX 3.x -- actually tested for 3.2.3
*/

# ifdef _AIX3
#  include <paths.h>
#  include <sys/machine.h>	/* to get byte order */
#  include <sys/select.h>
#  define HASFCHOWN	1	/* has fchown(2) */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define IP_SRCROUTE	0	/* Something is broken with getsockopt() */
#  define GIDSET_T	gid_t
#  define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
#  define SPT_PADCHAR	'\0'	/* pad process title with nulls */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_INT
#  endif /* LA_TYPE */
#  define FSHIFT	16
#  define LA_AVENRUN	"avenrun"
#  if !defined(_AIX4) || _AIX4 < 40300
#   ifndef __BIT_TYPES_DEFINED__
#    define SM_INT32	int
#   endif /* __BIT_TYPES_DEFINED__ */
#  endif /* !defined(_AIX4) || _AIX4 < 40300 */
#  if !defined(_AIX4) || _AIX4 < 40200
#   define SM_CONF_SYSLOG	0
#  endif /* !defined(_AIX4) || _AIX4 < 40200 */
# endif /* _AIX3 */


/*
**  IBM AIX 2.2.1 -- actually tested for osupdate level 2706+1773
**
**	From Mark Whetzel <markw@wg.waii.com>.
*/

# ifdef AIX			/* AIX/RT compiler pre-defines this */
#  include <paths.h>
#  include <sys/time.h>		/* AIX/RT resource.h does NOT include this */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define HASFCHMOD	0	/* does not have fchmod(2) syscall */
#  define HASSETREUID	1	/* use setreuid(2) -lbsd system call */
#  define HASSETVBUF	1	/* use setvbuf(2) system call */
#  define HASSETRLIMIT	0	/* does not have setrlimit call */
#  define HASFLOCK	0	/* does not have flock call - use fcntl */
#  define HASULIMIT	1	/* use ulimit instead of setrlimit call */
#  define SM_CONF_GETOPT	0	/* Do we need theirs or ours */
#  define SYS5SETPGRP	1	/* don't have setpgid on AIX/RT */
#  define IP_SRCROUTE	0	/* Something is broken with getsockopt() */
#  define BSD4_3		1	/* NOT bsd 4.4 or posix signals */
#  define GIDSET_T	int
#  define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
#  define SPT_PADCHAR	'\0'		/* pad process title with nulls */
#  define LA_TYPE	LA_SUBR		/* use our ported loadavgd daemon */
#  define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
#  define ARBPTR_T	int *
#  define void		int
typedef int		pid_t;
/* RTisms for BSD compatibility, specified in the Makefile
  define BSD		1
  define BSD_INCLUDES		1
  define BSD_REMAP_SIGNAL_TO_SIGVEC
    RTisms needed above */
/* make this sendmail in a completely different place */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/local/newmail/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/usr/local/newmail/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
# endif /* AIX */

# if defined(_AIX)
#  define LDA_USE_LOCKF		1
#  define LDA_USE_SETEUID	1
# endif /* defined(_AIX) */

/*
**  Silicon Graphics IRIX
**
**	Compiles on 4.0.1.
**
**	Use IRIX64 instead of IRIX for 64-bit IRIX (6.0).
**	Use IRIX5 instead of IRIX for IRIX 5.x.
**
**	IRIX64 changes from Mark R. Levinson <ml@cvdev.rochester.edu>.
**	IRIX5 changes from Kari E. Hurtta <Kari.Hurtta@fmi.fi>.
*/

# ifdef IRIX
#  define SYSTEM5	1	/* this is a System-V derived system */
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define IP_SRCROUTE	1	/* can check IP source routing */
#  define setpgid	BSDsetpgrp
#  define GIDSET_T	gid_t
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define SYSLOG_BUFSIZE 512
#  if defined(_SC_NPROC_ONLN) && !defined(_SC_NPROCESSORS_ONLN)
    /* _SC_NPROC_ONLN is 'mpadmin -u', total # of unrestricted processors */
#   define _SC_NPROCESSORS_ONLN	_SC_NPROC_ONLN
#  endif /* if defined(_SC_NPROC_ONLN) && !defined(_SC_NPROCESSORS_ONLN) */
#  ifdef IRIX6
#   define STAT64	1
#   define QUAD_T	unsigned long long
#   define LA_TYPE	LA_IRIX6	/* figure out at run time */
#   define SAFENFSPATHCONF 0	/* pathconf(2) lies on NFS filesystems */
#  else /* IRIX6 */
#   define LA_TYPE	LA_INT

#   ifdef IRIX64
#    define STAT64	1
#    define QUAD_T	unsigned long long
#    define NAMELISTMASK	0x7fffffffffffffff	/* mask for nlist() values */
#   else /* IRIX64 */
#    define STAT64	0
#    define NAMELISTMASK	0x7fffffff		/* mask for nlist() values */
#   endif /* IRIX64 */
#  endif /* IRIX6 */
#  if defined(IRIX64) || defined(IRIX5) || defined(IRIX6)
#   include <sys/cdefs.h>
#   include <paths.h>
#   define ARGV_T	char *const *
#   define HASFCHOWN	1	/* has fchown(2) */
#   define HASSETRLIMIT	1	/* has setrlimit(2) syscall */
#   define HASGETDTABLESIZE 1	/* has getdtablesize(2) syscall */
#   define HASSTRERROR	1	/* has strerror(3) */
#  else /* defined(IRIX64) || defined(IRIX5) || defined(IRIX6) */
#   define ARGV_T	const char **
#   define WAITUNION	1	/* use "union wait" as wait argument type */
#  endif /* defined(IRIX64) || defined(IRIX5) || defined(IRIX6) */
# endif /* IRIX */


/*
**  SunOS and Solaris
**
**	Tested on SunOS 4.1.x (a.k.a. Solaris 1.1.x) and
**	Solaris 2.4 (a.k.a. SunOS 5.4).
*/

# if defined(sun) && !defined(BSD)

#  include <sys/time.h>
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define IP_SRCROUTE	1	/* can check IP source routing */
#  define SAFENFSPATHCONF 1	/* pathconf(2) pessimizes on NFS filesystems */
#  ifndef HASFCHOWN
#   define HASFCHOWN	1	/* fchown(2) */
#  endif /* ! HASFCHOWN */

#  ifdef __svr4__
#   define LDA_USE_LOCKF		1
#   define LDA_USE_SETEUID	1
#   define _PATH_MAILDIR		"/var/mail"
#  endif /* __svr4__ */

#  ifdef SOLARIS_2_3
#   define SOLARIS	20300	/* for back compat only -- use -DSOLARIS=20300 */
#  endif /* SOLARIS_2_3 */

#  if defined(NOT_SENDMAIL) && !defined(SOLARIS) && defined(sun) && (defined(__svr4__) || defined(__SVR4))
#   define SOLARIS	1	/* unknown Solaris version */
#  endif /* defined(NOT_SENDMAIL) && !defined(SOLARIS) && defined(sun) && (defined(__svr4__) || defined(__SVR4)) */

#  ifdef SOLARIS
			/* Solaris 2.x (a.k.a. SunOS 5.x) */
#   ifndef __svr4__
#    define __svr4__		/* use all System V Release 4 defines below */
#   endif /* ! __svr4__ */
#   define GIDSET_T	gid_t
#   define USE_SA_SIGACTION	1	/* use sa_sigaction field */
#   define BROKEN_PTHREAD_SLEEP	1	/* sleep after pthread_create() fails */
#   define HASSTRERROR	1	/* has strerror(3) */
#   ifndef _PATH_UNIX
#    define _PATH_UNIX		"/dev/ksyms"
#   endif /* ! _PATH_UNIX */
#   ifndef _PATH_VENDOR_CF
#    define _PATH_VENDOR_CF	"/etc/mail/sendmail.cf"
#   endif /* ! _PATH_VENDOR_CF */
#   ifndef _PATH_SENDMAILPID
#    define _PATH_SENDMAILPID	"/etc/mail/sendmail.pid"
#   endif /* ! _PATH_SENDMAILPID */
#   ifndef _PATH_HOSTS
#    define _PATH_HOSTS		"/etc/inet/hosts"
#   endif /* ! _PATH_HOSTS */
#   ifndef SYSLOG_BUFSIZE
#    define SYSLOG_BUFSIZE	1024	/* allow full size syslog buffer */
#   endif /* ! SYSLOG_BUFSIZE */
#   ifndef TZ_TYPE
#    define TZ_TYPE	TZ_TZNAME
#   endif /* ! TZ_TYPE */
#   if SOLARIS >= 20300 || (SOLARIS < 10000 && SOLARIS >= 203)
#    define USESETEUID		1	/* seteuid works as of 2.3 */
#    define LDA_CONTENTLENGTH	1	/* Needs the Content-Length header */
#   endif /* SOLARIS >= 20300 || (SOLARIS < 10000 && SOLARIS >= 203) */
#   if SOLARIS >= 20500 || (SOLARIS < 10000 && SOLARIS >= 205)
#    define HASSETREUID	1		/* setreuid works as of 2.5 */
#    define HASSETREGID	1	/* use setregid(2) to set saved gid */
#   if SOLARIS >= 20600 || (SOLARIS < 10000 && SOLARIS >= 206)
#    define HASSNPRINTF 1	/* has snprintf(3c) starting in 2.6 */
#   endif /* SOLARIS >= 20600 || (SOLARIS < 10000 && SOLARIS >= 206) */
#    if SOLARIS < 207 || (SOLARIS > 10000 && SOLARIS < 20700)
#     ifndef LA_TYPE
#      define LA_TYPE	LA_KSTAT	/* use kstat(3KSTAT) -- may work in < 2.5 */
#     endif /* ! LA_TYPE */
#     ifndef RANDOMSHIFT		/* random() doesn't work well (sometimes) */
#      define RANDOMSHIFT	8
#     endif /* ! RANDOMSHIFT */
#    endif /* SOLARIS < 207 || (SOLARIS > 10000 && SOLARIS < 20700) */
#   else /* SOLARIS >= 20500 || (SOLARIS < 10000 && SOLARIS >= 205) */
#    ifndef HASRANDOM
#     define HASRANDOM	0		/* doesn't have random(3) */
#    endif /* ! HASRANDOM */
#   endif /* SOLARIS >= 20500 || (SOLARIS < 10000 && SOLARIS >= 205) */
#   if (SOLARIS > 10000 && SOLARIS < 20600) || SOLARIS < 206
#    define SM_INT32	int	/* 32bit integer */
#   endif /* (SOLARIS > 10000 && SOLARIS < 20600) || SOLARIS < 206 */
#   if SOLARIS >= 20700 || (SOLARIS < 10000 && SOLARIS >= 207)
#    ifndef LA_TYPE
#     include <sys/loadavg.h>
#     if SOLARIS >= 20900 || (SOLARIS < 10000 && SOLARIS >= 209)
#      include <sys/pset.h>
#      define LA_TYPE	LA_PSET	/* pset_getloadavg(3c) appears in 2.9 */
#     else /* SOLARIS >= 20900 || (SOLARIS < 10000 && SOLARIS >= 209) */
#      define LA_TYPE	LA_SUBR	/* getloadavg(3c) appears in 2.7 */
#     endif /* SOLARIS >= 20900 || (SOLARIS < 10000 && SOLARIS >= 209) */
#    endif /* ! LA_TYPE */
#    define HASGETUSERSHELL 1	/* getusershell(3c) bug fixed in 2.7 */
#   endif /* SOLARIS >= 20700 || (SOLARIS < 10000 && SOLARIS >= 207) */
#   if SOLARIS >= 20800 || (SOLARIS < 10000 && SOLARIS >= 208)
#    undef _PATH_SENDMAILPID	/* tmpfs /var/run added in 2.8 */
#    define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
#    ifndef SMRSH_CMDDIR
#     define SMRSH_CMDDIR	"/var/adm/sm.bin"
#    endif /* ! SMRSH_CMDDIR */
#    define SL_FUDGE	34	/* fudge offset for SyslogPrefixLen */
#    define HASLDAPGETALIASBYNAME	1	/* added in S8 */
#   endif /* SOLARIS >= 20800 || (SOLARIS < 10000 && SOLARIS >= 208) */
#   if SOLARIS >= 20900 || (SOLARIS < 10000 && SOLARIS >= 209)
#    define HASURANDOMDEV	1	/* /dev/[u]random added in S9 */
#    define HASCLOSEFROM	1	/* closefrom(3c) added in S9 */
#    define HASFDWALK		1	/* fdwalk(3c) added in S9 */
#   endif /* SOLARIS >= 20900 || (SOLARIS < 10000 && SOLARIS >= 209) */
#   if SOLARIS >= 21000 || (SOLARIS < 10000 && SOLARIS >= 210)
#    define HASUNSETENV 1       /* unsetenv() added in S10 */
#   endif /* SOLARIS >= 21000 || (SOLARIS < 10000 && SOLARIS >= 210) */
#   if SOLARIS >= 21100 || (SOLARIS < 10000 && SOLARIS >= 211)
#    define GETLDAPALIASBYNAME_VERSION 2	/* changed in S11 */
#    define HAVE_NANOSLEEP	1	/* moved from librt to libc in S11 */
#   endif /* SOLARIS >= 21100 || (SOLARIS < 10000 && SOLARIS >= 211) */
#   ifndef HASGETUSERSHELL
#    define HASGETUSERSHELL 0	/* getusershell(3) causes core dumps pre-2.7 */
#   endif /* ! HASGETUSERSHELL */

#  else /* SOLARIS */
			/* SunOS 4.0.3 or 4.1.x */
#   define HASGETUSERSHELL 1	/* DOES have getusershell(3) call in libc */
#   define HASSETREUID	1	/* has setreuid(2) call */
#   ifndef HASFLOCK
#    define HASFLOCK	1	/* has flock(2) call */
#   endif /* ! HASFLOCK */
#   define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#   define TZ_TYPE	TZ_TM_ZONE	/* use tm->tm_zone */
#   include <memory.h>
#   include <vfork.h>
#   ifdef __GNUC__
#    define strtoul	strtol	/* gcc library bogosity */
#   endif /* __GNUC__ */
#   define memmove(d, s, l)	(bcopy((s), (d), (l)))
#   define atexit(f)	on_exit((f), 0)	/* ugly hack for SunOS */
#   define SM_INT32	int	/* 32bit integer */
#   define SM_ALIGN_SIZE (sizeof(long))
#   define GIDSET_T	int
#   define SM_CONF_SYSLOG	0

#   ifdef SUNOS403
			/* special tweaking for SunOS 4.0.3 */
#    include <malloc.h>
#    define BSD4_3	1	/* 4.3 BSD-based */
#    define NEEDSTRSTR	1	/* need emulation of strstr(3) routine */
#    define WAITUNION	1	/* use "union wait" as wait argument type */
#    undef WIFEXITED
#    undef WEXITSTATUS
#    undef HASUNAME
#    define setpgid	setpgrp
#    define MODE_T	int
typedef int		pid_t;
extern char		*getenv();

#   else /* SUNOS403 */
			/* 4.1.x specifics */
#    define HASSETSID	1	/* has POSIX setsid(2) call */
#    define HASSETVBUF	1	/* we have setvbuf(3) in libc */

#   endif /* SUNOS403 */
#  endif /* SOLARIS */

#  ifndef LA_TYPE
#   define LA_TYPE	LA_INT
#  endif /* ! LA_TYPE */

# endif /* defined(sun) && !defined(BSD) */

/*
**  DG/UX
**
**	Tested on 5.4.2 and 5.4.3.  Use DGUX_5_4_2 to get the
**	older support.
**	5.4.3 changes from Mark T. Robinson <mtr@ornl.gov>.
*/

# ifdef DGUX_5_4_2
#  define DGUX		1
# endif /* DGUX_5_4_2 */

# ifdef DGUX
#  define SYSTEM5	1
#  define LA_TYPE	LA_DGUX
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define IP_SRCROUTE	0	/* does not have <netinet/ip_var.h> */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) */
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define LDA_USE_LOCKF		1

/* these include files must be included early on DG/UX */
#  include <netinet/in.h>
#  include <arpa/inet.h>

/* compiler doesn't understand const? */
#  define const

#  ifdef DGUX_5_4_2
#   define inet_addr	dgux_inet_addr
extern long	dgux_inet_addr();
#  endif /* DGUX_5_4_2 */
# endif /* DGUX */


/*
**  Digital Ultrix 4.2 - 4.5
**
**	Apparently, fcntl locking is broken on 4.2A, in that locks are
**	not dropped when the process exits.  This causes major problems,
**	so flock is the only alternative.
*/

# ifdef ultrix
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASFCHOWN	1	/* has fchown(2) syscall */
#  ifndef HASFLOCK
#   define HASFLOCK	1	/* has flock(2) call */
#  endif /* ! HASFLOCK */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  ifndef BROKEN_RES_SEARCH
#   define BROKEN_RES_SEARCH 1	/* res_search(unknown) returns h_errno=0 */
#  endif /* ! BROKEN_RES_SEARCH */
#  if !defined(NEEDLOCAL_HOSTNAME_LENGTH) && NAMED_BIND && __RES >= 19931104 && __RES < 19950621
#   define NEEDLOCAL_HOSTNAME_LENGTH	1	/* see sendmail/README */
#  endif /* !defined(NEEDLOCAL_HOSTNAME_LENGTH) && NAMED_BIND && __RES >= 19931104 && __RES < 19950621 */
#  ifdef vax
#   define LA_TYPE	LA_FLOAT
#  else /* vax */
#   define LA_TYPE	LA_INT
#   define LA_AVENRUN	"avenrun"
#  endif /* vax */
#  define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* pre-4.4 TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  define SYSLOG_BUFSIZE	256
#  define SM_CONF_SYSLOG	0
# endif /* ultrix */


/*
**  OSF/1 for KSR.
**
**	Contributed by Todd C. Miller <Todd.Miller@cs.colorado.edu>
*/

# ifdef __ksr__
#  define __osf__	1	/* get OSF/1 defines below */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
#  endif /* ! TZ_TYPE */
# endif /* __ksr__ */


/*
**  OSF/1 for Intel Paragon.
**
**	Contributed by Jeff A. Earickson <jeff@ssd.intel.com>
**	of Intel Scalable Systems Divison.
*/

# ifdef __PARAGON__
#  define __osf__	1	/* get OSF/1 defines below */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
#  endif /* ! TZ_TYPE */
#  define GIDSET_T	gid_t
#  define MAXNAMLEN	NAME_MAX
# endif /* __PARAGON__ */


/*
**  Tru64 UNIX, formerly known as Digital UNIX, formerly known as DEC OSF/1
**
**	Tested for 3.2 and 4.0.
*/

# ifdef __osf__
#  define HASUNAME	1	/* has uname(2) call */
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASFCHOWN	1	/* has fchown(2) syscall */
#  define HASSETLOGIN	1	/* has setlogin(2) */
#  define IP_SRCROUTE	1	/* can check IP source routing */
#  define HAS_ST_GEN	1	/* has st_gen field in stat struct */
#  define GIDSET_T	gid_t
#  define SM_INT32	int	/* 32bit integer */
#  ifndef HASFLOCK
#   include <standards.h>
#   if _XOPEN_SOURCE+0 >= 400
#    define HASFLOCK	0	/* 5.0 and later has bad flock(2) call */
#   else /* _XOPEN_SOURCE+0 >= 400 */
#    define HASFLOCK	1	/* has flock(2) call */
#   endif /* _XOPEN_SOURCE+0 >= 400 */
#  endif /* ! HASFLOCK */
#  define LA_TYPE	LA_ALPHAOSF
#  define SFS_TYPE	SFS_STATVFS	/* use <sys/statvfs.h> statfs() impl */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/var/adm/sendmail/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  if _FFR_DIGUNIX_SAFECHOWN
/*
**  Testing on a Digital UNIX 4.0a system showed this to be the correct
**  setting but given the security consequences, more testing and
**  verification is needed.  Unfortunately, the man page offers no
**  assistance.
*/
#   define IS_SAFE_CHOWN >= 0
#  endif /* _FFR_DIGUNIX_SAFECHOWN */
# endif /* __osf__ */


/*
**  NeXTstep
*/

# ifdef NeXT
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define NEEDPUTENV	2	/* need putenv(3) call; no setenv(3) call */
#  ifndef HASFLOCK
#   define HASFLOCK	1	/* has flock(2) call */
#  endif /* ! HASFLOCK */
#  define UID_T		int	/* compiler gripes on uid_t */
#  define GID_T		int	/* ditto for gid_t */
#  define MODE_T	int	/* and mode_t */
#  define setpgid	setpgrp
#  ifndef NOT_SENDMAIL
#   define sleep		sleepX
#  endif /* ! NOT_SENDMAIL */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_MACH
#  endif /* ! LA_TYPE */
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  ifdef _POSIX_SOURCE
extern struct passwd	*getpwent();
#  else /* _POSIX_SOURCE */
#   define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#   define WAITUNION	1	/* use "union wait" as wait argument type */
typedef int		pid_t;
#   undef WEXITSTATUS
#   undef WIFEXITED
#   undef WIFSTOPPED
#   undef WTERMSIG
#  endif /* _POSIX_SOURCE */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/etc/sendmail/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/etc/sendmail/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  define SM_INT32	int	/* 32bit integer */

#  ifdef TCPWRAPPERS
#   ifndef HASUNSETENV
#    define HASUNSETENV	1
#   endif /* ! HASUNSETENV */
#   undef NEEDPUTENV
#  endif /* TCPWRAPPERS */
#  ifndef __APPLE__
#   include <libc.h>
#   ifndef S_IRUSR
#    define S_IRUSR	S_IREAD
#   endif /* ! S_IRUSR */
#   ifndef S_IWUSR
#    define S_IWUSR	S_IWRITE
#   endif /* ! S_IWUSR */
#   define _PATH_MAILDIR	"/usr/spool/mail"
#  endif /* ! __APPLE__ */
#  ifndef isascii
#   define isascii(c)	((unsigned)(c) <= 0177)
#  endif /* ! isascii */
# endif /* NeXT */

/*
**  Apple Darwin
**      Contributed by Wilfredo Sanchez <wsanchez@mit.edu>
*/

# if defined(DARWIN)
#  define HASFCHMOD		1	/* has fchmod(2) */
#  define HASFCHOWN		1	/* has fchown(2) */
#  define HASFLOCK		1	/* has flock(2) */
#  define HASUNAME		1	/* has uname(2) */
#  define HASUNSETENV		1	/* has unsetenv(3) */
#  define HASSETSID		1	/* has POSIX setsid(2) call */
#  define HASINITGROUPS		1	/* has initgroups(3) */
#  define HASSETVBUF		1	/* has setvbuf (3) */
#  define HASSETREUID		0	/* setreuid(2) unusable */
#  define HASSETEUID		1	/* has seteuid(2) */
#  define USESETEUID		1	/* has seteuid(2) */
#  define HASSETEGID		1	/* has setegid(2) */
#  define HASSETREGID		1	/* has setregid(2) */
#  define HASSETRESGID		0	/* no setresgid(2) */
#  define HASLSTAT		1	/* has lstat(2) */
#  define HASSETRLIMIT		1	/* has setrlimit(2) */
#  define HASWAITPID		1	/* has waitpid(2) */
#  define HASGETDTABLESIZE	1	/* has getdtablesize(2) */
#  define HAS_ST_GEN		1	/* has st_gen field in struct stat */
#  define HASURANDOMDEV		1	/* has urandom(4) */
#  define HASSTRERROR		1	/* has strerror(3) */
#  define HASGETUSERSHELL	1	/* had getusershell(3) */
#  define GIDSET_T		gid_t	/* getgroups(2) takes gid_t */
#  define LA_TYPE		LA_SUBR	/* use getloadavg(3) */
#  define SFS_TYPE		SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
#  if DARWIN >= 70000
#   define SOCKADDR_LEN_T	socklen_t
#  endif
#  if DARWIN >= 80000
#   define SPT_TYPE		SPT_REUSEARGV
#   define SPT_PADCHAR		'\0'
#   define SOCKOPT_LEN_T	socklen_t
#  else
#   define SPT_TYPE		SPT_PSSTRINGS	/* use magic PS_STRINGS pointer for setproctitle */
#  endif
#  define ERRLIST_PREDEFINED		/* don't declare sys_errlist */
#  define BSD4_4_SOCKADDR		/* struct sockaddr has sa_len */
#  define SAFENFSPATHCONF	0	/* unverified: pathconf(2) doesn't work on NFS */
#  define HAS_IN_H		1
#  define NETLINK		1	/* supports AF_LINK */
#  ifndef NOT_SENDMAIL
#   define sleep sleepX
extern unsigned int sleepX __P((unsigned int seconds));
#  endif /* ! NOT_SENDMAIL */
# endif /* defined(DARWIN) */


/*
**  4.4 BSD
**
**	See also BSD defines.
*/

# if defined(BSD4_4) && !defined(__bsdi__) && !defined(__GNU__) && !defined(DARWIN)
#  include <paths.h>
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASFCHOWN	1	/* has fchown(2) syscall */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define HAS_ST_GEN	1	/* has st_gen field in stat struct */
#  include <sys/cdefs.h>
#  define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
#  define BSD4_4_SOCKADDR	/* has sa_len */
#  define NEED_PRINTF_PERCENTQ	1	/* doesn't have %lld */
#  define NETLINK	1	/* supports AF_LINK */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_SUBR
#  endif /* ! LA_TYPE */
#  define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
#  define SPT_TYPE	SPT_PSSTRINGS	/* use PS_STRINGS pointer */
# endif /* defined(BSD4_4) && !defined(__bsdi__) && !defined(__GNU__) && !defined(DARWIN)*/


/*
**  BSD/OS (was BSD/386) (all versions)
**	From Tony Sanders, BSDI
*/

# ifdef __bsdi__
#  include <paths.h>
#  define HASUNSETENV	1	/* has the unsetenv(3) call */
#  define HASSETREUID	0	/* BSD-OS has broken setreuid(2) emulation */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASSETLOGIN	1	/* has setlogin(2) */
#  define HASUNAME	1	/* has uname(2) syscall */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define HAS_ST_GEN	1	/* has st_gen field in stat struct */
#  include <sys/cdefs.h>
#  define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
#  define BSD4_4_SOCKADDR	/* has sa_len */
#  define NETLINK	1	/* supports AF_LINK */
#  define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_SUBR
#  endif /* ! LA_TYPE */
#  define GIDSET_T	gid_t
#  define QUAD_T		quad_t
#  if defined(_BSDI_VERSION) && _BSDI_VERSION >= 199312
			/* version 1.1 or later */
#   undef SPT_TYPE
#   define SPT_TYPE	SPT_BUILTIN	/* setproctitle is in libc */
#  else /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199312 */
			/* version 1.0 or earlier */
#   define SPT_PADCHAR	'\0'	/* pad process title with nulls */
#  endif /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199312 */
#  if defined(_BSDI_VERSION) && _BSDI_VERSION >= 199701	/* on 3.x */
#   define HASSETUSERCONTEXT 1	/* has setusercontext */
#  endif /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199701 */
#  if defined(_BSDI_VERSION) && _BSDI_VERSION <= 199701	/* 3.1 and earlier */
#   define MODE_T	int	/* va_arg() can't handle less than int */
#  endif /* defined(_BSDI_VERSION) && _BSDI_VERSION <= 199701 */
#  if defined(_BSDI_VERSION) && _BSDI_VERSION >= 199910	/* on 4.x */
#   define HASURANDOMDEV	1	/* has /dev/urandom(4) */
#  endif /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199910 */
# endif /* __bsdi__ */


# if defined(__QNX__)
#  if defined(__QNXNTO__)
/* QNX 6 */
#   include <unix.h>
#   define HASUNSETENV	1	/* has unsetenv(3) call */
#   define HASINITGROUPS	1	/* has initgroups(3) call */
#   define HASSETSID	1	/* has POSIX setsid(2) call */
#   define USESETEUID	1	/* has usable seteuid(2) call */
#   define HASFCHMOD	1	/* has fchmod(2) syscall */
#   define HASFCHOWN	1	/* has fchown(2) syscall */
#   define HASUNAME	1	/* has uname(2) syscall */
#   define HASSTRERROR	1	/* has strerror(3) */
#   define BSD4_4_SOCKADDR	/* has sa_len */
#   define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
#   define NETLINK	1	/* supports AF_LINK */
#   define GIDSET_T	gid_t
#   define QUAD_T	uint64_t
#   define HASSNPRINTF	1	/* has snprintf(3) (all versions?) */
#   define HASGETUSERSHELL 0

/*
**  We have a strrev() that doesn't allocate anything.
**  Make sure the one here is used.
*/

#   define strrev strrev_sendmail

#  else /* defined(__QNXNTO__) */

/*
**  QNX 4.2x
**	Contributed by Glen McCready <glen@qnx.com>.
**
**	Should work with all versions of QNX 4.
*/

#   include <unix.h>
#   include <sys/select.h>
#   undef NGROUPS_MAX
#   define HASSETSID	1	/* has POSIX setsid(2) call */
#   define USESETEUID	1	/* has usable seteuid(2) call */
#   define HASFCHMOD	1	/* has fchmod(2) syscall */
#   define HASGETDTABLESIZE 1	/* has getdtablesize(2) call */
#   define HASSETREUID	1	/* has setreuid(2) call */
#   define HASSTRERROR	1	/* has strerror(3) */
#   define HASFLOCK	0
#   undef HASINITGROUPS		/* has initgroups(3) call */
#   define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#   define IP_SRCROUTE	1	/* can check IP source routing */
#   define TZ_TYPE	TZ_TMNAME	/* use tmname variable */
#   define GIDSET_T	gid_t
#   define LA_TYPE	LA_ZERO
#   define SFS_TYPE	SFS_NONE
#   define SPT_TYPE	SPT_REUSEARGV
#   define SPT_PADCHAR	'\0'	/* pad process title with nulls */
#   define HASGETUSERSHELL 0
#   define _FILE_H_INCLUDED
#  endif /* defined(__QNXNTO__) */
# endif /* defined(__QNX__) */


/*
**  DragonFly BSD/ FreeBSD / NetBSD / OpenBSD (all architectures, all versions)
**
**  4.3BSD clone, closer to 4.4BSD	for FreeBSD 1.x and NetBSD 0.9x
**  4.4BSD-Lite based			for FreeBSD 2.x and NetBSD 1.x
**
**	See also BSD defines.
*/

# if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
#  include <paths.h>
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASFCHOWN	1	/* has fchown(2) syscall */
#  define HASUNAME	1	/* has uname(2) syscall */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define HAS_ST_GEN	1	/* has st_gen field in stat struct */
#  define NEED_PRINTF_PERCENTQ	1	/* doesn't have %lld */
#  include <sys/cdefs.h>
#  define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
#  define BSD4_4_SOCKADDR	/* has sa_len */
#  define NETLINK	1	/* supports AF_LINK */
#  define SAFENFSPATHCONF 1	/* pathconf(2) pessimizes on NFS filesystems */
#  define GIDSET_T	gid_t
#  define QUAD_T	unsigned long long
#  define HASSNPRINTF	1	/* has snprintf(3) (all versions?) */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_SUBR
#  endif /* ! LA_TYPE */
#  if defined(__NetBSD__) && defined(__NetBSD_Version__) && \
    ((__NetBSD_Version__ >= 200040000 && __NetBSD_Version__ < 200090000) || \
    (__NetBSD_Version__ >= 299000900))
#   undef SFS_TYPE
#   define SFS_TYPE	SFS_STATVFS
#  else
#   define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
#  endif
#  if defined(__NetBSD__) && (NetBSD > 199307 || NetBSD0_9 > 1)
#   undef SPT_TYPE
#   define SPT_TYPE	SPT_BUILTIN	/* setproctitle is in libc */
#  endif /* defined(__NetBSD__) && (NetBSD > 199307 || NetBSD0_9 > 1) */
#  if defined(__NetBSD__) && ((__NetBSD_Version__ > 102070000) || (NetBSD1_2 > 8) || defined(NetBSD1_4) || defined(NetBSD1_3))
#   define HASURANDOMDEV	1	/* has /dev/urandom(4) */
#  endif /* defined(__NetBSD__) && ((__NetBSD_Version__ > 102070000) || (NetBSD1_2 > 8) || defined(NetBSD1_4) || defined(NetBSD1_3)) */
#  if defined(__NetBSD__) && defined(__NetBSD_Version__) && __NetBSD_Version__ >= 104170000
#   define HASSETUSERCONTEXT	1	/* BSDI-style login classes */
#  endif
#  if defined(__NetBSD__) && defined(__NetBSD_Version__) && \
    ((__NetBSD_Version__ >= 200060000 && __NetBSD_Version__ < 200090000) || \
    (__NetBSD_Version__ >= 299000900))
#   define HASCLOSEFROM	1	/* closefrom(3) added in 2.0F */
#  endif
#  if defined(__NetBSD__)
#   define USESYSCTL		1	/* use sysctl(3) for getting ncpus */
#   include <sys/param.h>
#   include <sys/sysctl.h>
#  endif
#  if defined(__DragonFly__)
#   define HASSETLOGIN		1	/* has setlogin(2) */
#   define HASSRANDOMDEV	1	/* has srandomdev(3) */
#   define HASURANDOMDEV	1	/* has /dev/urandom(4) */
#   undef SPT_TYPE
#   include <libutil.h>
#   define SPT_TYPE		SPT_BUILTIN
#   define HASSETUSERCONTEXT	1	/* BSDI-style login classes */
#   ifndef SMRSH_CMDDIR
#    define SMRSH_CMDDIR	"/usr/libexec/sm.bin"
#   endif /* ! SMRSH_CMDDIR */
#   ifndef SMRSH_PATH
#    define SMRSH_PATH		"/bin:/usr/bin"
#   endif /* ! SMRSH_PATH */
#  define USESYSCTL		1	/* use sysctl(3) for getting ncpus */
#  include <sys/sysctl.h>
#  endif /* defined(__DragonFly__) */
#  if defined(__FreeBSD__)
#   define HASSETLOGIN	1	/* has setlogin(2) */
#   if __FreeBSD_version >= 227001
#    define HASSRANDOMDEV	1	/* has srandomdev(3) */
#    define HASURANDOMDEV	1	/* has /dev/urandom(4) */
#   endif /* __FreeBSD_version >= 227001 */
#   undef SPT_TYPE
#   if __FreeBSD__ >= 2
#    include <osreldate.h>
#    if __FreeBSD_version >= 199512	/* 2.2-current when it appeared */
#     include <libutil.h>
#     define SPT_TYPE	SPT_BUILTIN
#    endif /* __FreeBSD_version >= 199512 */
#    if __FreeBSD_version >= 222000	/* 2.2.2-release and later */
#     define HASSETUSERCONTEXT	1	/* BSDI-style login classes */
#    endif /* __FreeBSD_version >= 222000 */
#    if __FreeBSD_version >= 330000	/* 3.3.0-release and later */
#     ifndef SMRSH_CMDDIR
#      define SMRSH_CMDDIR	"/usr/libexec/sm.bin"
#     endif /* ! SMRSH_CMDDIR */
#     ifndef SMRSH_PATH
#      define SMRSH_PATH	"/bin:/usr/bin"
#     endif /* ! SMRSH_PATH */
#    endif /* __FreeBSD_version >= 330000 */
#    if __FreeBSD_version >= 430000	/* 4.3.0-release and later */
#     define SOCKADDR_LEN_T	socklen_t	/* e.g., arg#3 to accept, getsockname */
#     define SOCKOPT_LEN_T	socklen_t	/* arg#5 to getsockopt */
#    endif /* __FreeBSD_version >= 430000 */
#    define USESYSCTL		1	/* use sysctl(3) for getting ncpus */
#    include <sys/sysctl.h>
#   endif /* __FreeBSD__ >= 2 */
#   ifndef SPT_TYPE
#    define SPT_TYPE	SPT_REUSEARGV
#    define SPT_PADCHAR	'\0'		/* pad process title with nulls */
#   endif /* ! SPT_TYPE */
#  endif /* defined(__FreeBSD__) */
#  if defined(__OpenBSD__)
#   undef SPT_TYPE
#   define SPT_TYPE	SPT_BUILTIN	/* setproctitle is in libc */
#   define HASSETLOGIN	1	/* has setlogin(2) */
#   if OpenBSD < 200305
#    define HASSETREUID	0	/* setreuid(2) broken in OpenBSD < 3.3 */
#   endif /* OpenBSD < 200305 */
#   define HASSETEGID	1	/* use setegid(2) to set saved gid */
#   define HASURANDOMDEV	1	/* has /dev/urandom(4) */
#   if OpenBSD >= 200006
#    define HASSRANDOMDEV	1	/* has srandomdev(3) */
#   endif /* OpenBSD >= 200006 */
#   if OpenBSD >= 200012
#    define HASSETUSERCONTEXT	1	/* BSDI-style login classes */
#   endif /* OpenBSD >= 200012 */
#   if OpenBSD >= 200405
#    define HASCLOSEFROM	1	/* closefrom(3) added in 3.5 */
#   endif /* OpenBSD >= 200405 */
#   if OpenBSD >= 200505
#    undef NETISO	/* iso.h removed in 3.7 */
#   endif /* OpenBSD >= 200505 */
#  endif /* defined(__OpenBSD__) */
# endif /* defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) */


/*
**  Mach386
**
**	For mt Xinu's Mach386 system.
*/

# if defined(MACH) && defined(i386) && !defined(__GNU__)
#  define MACH386	1
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  ifndef HASFLOCK
#   define HASFLOCK	1	/* has flock(2) call */
#  endif /* ! HASFLOCK */
#  define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#  define NEEDSTRTOL	1	/* need the strtol() function */
#  define setpgid	setpgrp
#  ifndef LA_TYPE
#   define LA_TYPE	LA_FLOAT
#  endif /* ! LA_TYPE */
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  undef HASSETVBUF		/* don't actually have setvbuf(3) */
#  undef WEXITSTATUS
#  undef WIFEXITED
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/etc/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
# endif /* defined(MACH) && defined(i386) && !defined(__GNU__) */



/*
**  GNU OS (hurd)
**	Largely BSD & posix compatible.
**	Port contributed by Miles Bader <miles@gnu.ai.mit.edu>.
**	Updated by Mark Kettenis <kettenis@wins.uva.nl>.
*/

# if defined(__GNU__) && !defined(NeXT)
#  include <paths.h>
#  define HASFCHMOD	1	/* has fchmod(2) call */
#  define HASFCHOWN	1	/* has fchown(2) call */
#  define HASUNAME	1	/* has uname(2) call */
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define HAS_ST_GEN	1	/* has st_gen field in stat struct */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define GIDSET_T	gid_t
#  define SOCKADDR_LEN_T	socklen_t
#  define SOCKOPT_LEN_T	socklen_t
#  if (__GLIBC__ == 2 && __GLIBC_MINOR__ > 1) || __GLIBC__ > 2
#   define LA_TYPE	LA_SUBR
#  else /* (__GLIBC__ == 2 && __GLIBC_MINOR__ > 1) || __GLIBC__ > 2 */
#   define LA_TYPE	LA_MACH
   /* GNU uses mach[34], which renames some rpcs from mach2.x. */
#   define host_self	mach_host_self
#  endif /* (__GLIBC__ == 2 && __GLIBC_MINOR__ > 1) || __GLIBC__ > 2 */
#  define SFS_TYPE	SFS_STATFS
#  define SPT_TYPE	SPT_CHANGEARGV
#  define ERRLIST_PREDEFINED	1	/* don't declare sys_errlist */
#  define BSD4_4_SOCKADDR	1	/* has sa_len */
#  define SIOCGIFCONF_IS_BROKEN  1	/* SIOCGFCONF doesn't work */
#  define HAS_IN_H	1	/* GNU has netinet/in.h. */
/* GNU has no MAXPATHLEN; ideally the code should be changed to not use it. */
#  define MAXPATHLEN	2048
# endif /* defined(__GNU__) && !defined(NeXT) */

/*
**  4.3 BSD -- this is for very old systems
**
**	Should work for mt Xinu MORE/BSD and Mips UMIPS-BSD 2.1.
**
**	You'll also have to install a new resolver library.
**	I don't guarantee that support for this environment is complete.
*/

# if defined(oldBSD43) || defined(MORE_BSD) || defined(umipsbsd)
#  define NEEDVPRINTF	1	/* need a replacement for vprintf(3) */
#  define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#  define ARBPTR_T	char *
#  define setpgid	setpgrp
#  ifndef LA_TYPE
#   define LA_TYPE	LA_FLOAT
#  endif /* ! LA_TYPE */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  undef WEXITSTATUS
#  undef WIFEXITED
typedef short		pid_t;
# endif /* defined(oldBSD43) || defined(MORE_BSD) || defined(umipsbsd) */


/*
**  SCO Unix
**
**	This includes three parts:
**
**	The first is for SCO OpenServer 5.
**	(Contributed by Keith Reynolds <keithr@sco.COM>).
**
**		SCO OpenServer 5 has a compiler version number macro,
**		which we can use to figure out what version we're on.
**		This may have to change in future releases.
**
**	The second is for SCO UNIX 3.2v4.2/Open Desktop 3.0.
**	(Contributed by Philippe Brand <phb@colombo.telesys-innov.fr>).
**
**	The third is for SCO UNIX 3.2v4.0/Open Desktop 2.0 and earlier.
*/

/* SCO OpenServer 5 */
# if _SCO_DS >= 1
#  include <paths.h>
#  define SIOCGIFNUM_IS_BROKEN 1	/* SIOCGIFNUM returns bogus value */
#  define HASFCHMOD	1	/* has fchmod(2) call */
#  define HASFCHOWN	1	/* has fchown(2) call */
#  define HASSETRLIMIT	1	/* has setrlimit(2) call */
#  define USESETEUID	1	/* has seteuid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASGETDTABLESIZE 1	/* has getdtablesize(2) call */