xref: /freebsd-11-stable/contrib/sendmail/include/sm/conf.h

/*
 * 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 $
 */

/*
**  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(3k) -- 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 */
#  define RLIMIT_NEEDS_SYS_TIME_H	1
#  define LDA_USE_LOCKF	1
#  ifndef LA_TYPE
#   define LA_TYPE	LA_DEVSHORT
#  endif /* ! LA_TYPE */
#  define _PATH_AVENRUN	"/dev/table/avenrun"
#  ifndef _SCO_unix_4_2
#   define _SCO_unix_4_2
#  else /* ! _SCO_unix_4_2 */
#   define SOCKADDR_LEN_T	size_t	/* e.g., arg#3 to accept, getsockname */
#   define SOCKOPT_LEN_T	size_t	/* arg#5 to getsockopt */
#  endif /* ! _SCO_unix_4_2 */
# endif /* _SCO_DS >= 1 */

/* SCO UNIX 3.2v4.2/Open Desktop 3.0 */
# ifdef _SCO_unix_4_2
#  define _SCO_unix_
#  define HASSETREUID	1	/* has setreuid(2) call */
# endif /* _SCO_unix_4_2 */

/* SCO UNIX 3.2v4.0 Open Desktop 2.0 and earlier */
# ifdef _SCO_unix_
#  include <sys/stream.h>	/* needed for IP_SRCROUTE */
#  define SYSTEM5	1	/* include all the System V defines */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define NOFTRUNCATE	0	/* has (simulated) ftruncate call */
#  ifndef USE_SIGLONGJMP
#   define USE_SIGLONGJMP	1 /* sigsetjmp needed for signal handling */
#  endif /* ! USE_SIGLONGJMP */
#  define MAXPATHLEN	PATHSIZE
#  define SFS_TYPE	SFS_4ARGS	/* use <sys/statfs.h> 4-arg impl */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define SPT_TYPE	SPT_SCO		/* write kernel u. area */
#  define TZ_TYPE	TZ_TM_NAME	/* use tm->tm_name */
#  define UID_T		uid_t
#  define GID_T		gid_t
#  define GIDSET_T	gid_t
#  define _PATH_UNIX		"/unix"
#  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 */

/* stuff fixed in later releases */
#  ifndef _SCO_unix_4_2
#   define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  endif /* ! _SCO_unix_4_2 */

#  ifndef _SCO_DS
#   define ftruncate	chsize	/* use chsize(2) to emulate ftruncate */
#   define NEEDFSYNC	1	/* needs the fsync(2) call stub */
#   define NETUNIX	0	/* no unix domain socket support */
#   define LA_TYPE	LA_SHORT
#  endif /* ! _SCO_DS */

# endif /* _SCO_unix_ */

/*
**  ISC (SunSoft) Unix.
**
**	Contributed by J.J. Bailey <jjb@jagware.bcc.com>
*/

# ifdef ISC_UNIX
#  include <net/errno.h>
#  include <sys/stream.h>	/* needed for IP_SRCROUTE */
#  include <sys/bsdtypes.h>
#  define SYSTEM5	1	/* include all the System V defines */
#  define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define NEEDFSYNC	1	/* needs the fsync(2) call stub */
#  define NETUNIX	0	/* no unix domain socket support */
#  define MAXPATHLEN	1024
#  define LA_TYPE	LA_SHORT
#  define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define _PATH_UNIX		"/unix"
#  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 /* ISC_UNIX */


/*
**  Altos System V (5.3.1)
**	Contributed by Tim Rice <tim@trr.metro.net>.
*/

# ifdef ALTOS_SYSTEM_V
#  include <sys/stream.h>
#  include <limits.h>
#  define SYSTEM5	1	/* include all the System V defines */
#  define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define WAITUNION	1	/* use "union wait" as wait argument type */
#  define NEEDFSYNC	1	/* no fsync(2) in system library */
#  define NEEDSTRSTR	1	/* need emulation of the strstr(3) call */
#  define NOFTRUNCATE	1	/* do not have ftruncate(2) */
#  define MAXPATHLEN	PATH_MAX
#  define LA_TYPE	LA_SHORT
#  define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
#  define NETUNIX	0	/* no unix domain socket support */
#  undef WIFEXITED
#  undef WEXITSTATUS
#  define strtoul	strtol	/* gcc library bogosity */

typedef unsigned short	uid_t;
typedef unsigned short	gid_t;
typedef short		pid_t;
typedef unsigned long	mode_t;

/* some stuff that should have been in the include files */
extern char		*malloc();
extern struct passwd	*getpwent();
extern struct passwd	*getpwnam();
extern struct passwd	*getpwuid();
extern char		*getenv();
extern struct group	*getgrgid();
extern struct group	*getgrnam();

# endif /* ALTOS_SYSTEM_V */


/*
**  ConvexOS 11.0 and later
**
**	"Todd C. Miller" <millert@mroe.cs.colorado.edu> claims this
**	works on 9.1 as well.
**
**  ConvexOS 11.5 and later, should work on 11.0 as defined.
**  For pre-ConvexOOS 11.0, define SM_CONF_GETOPT=0, undef IDENTPROTO
**
**	Eric Schnoebelen (eric@cirr.com) For CONVEX Computer Corp.
**		(now the CONVEX Technologies Center of Hewlett Packard)
*/

# ifdef _CONVEX_SOURCE
#  define HASGETDTABLESIZE	1	/* has getdtablesize(2) */
#  define HASINITGROUPS	1	/* has initgroups(3) */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASUNSETENV	1	/* has unsetenv(3) */
#  define HASFLOCK	1	/* has flock(2) */
#  define HASSETRLIMIT	1	/* has setrlimit(2) */
#  define HASSETREUID	1	/* has setreuid(2) */
#  define BROKEN_RES_SEARCH	1	/* res_search(unknown) returns h_error=0 */
#  define NEEDPUTENV	1	/* needs putenv (written in terms of setenv) */
#  define SM_CONF_GETOPT	1	/* need a replacement for getopt(3) */
#  define IP_SRCROUTE	0	/* Something is broken with getsockopt() */
#  define LA_TYPE	LA_FLOAT
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef S_IREAD
#   define S_IREAD	_S_IREAD
#   define S_IWRITE	_S_IWRITE
#   define S_IEXEC	_S_IEXEC
#   define S_IFMT	_S_IFMT
#   define S_IFCHR	_S_IFCHR
#   define S_IFBLK	_S_IFBLK
#  endif /* ! S_IREAD */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_TIMEZONE
#  endif /* ! TZ_TYPE */
#  ifndef IDENTPROTO
#   define IDENTPROTO	1
#  endif /* ! IDENTPROTO */
#  ifndef SHARE_V1
#   define SHARE_V1	1	/* version 1 of the fair share scheduler */
#  endif /* ! SHARE_V1 */
#  if !defined(__GNUC__ )
#   define UID_T	int		/* GNUC gets it right, ConvexC botches */
#   define GID_T	int		/* GNUC gets it right, ConvexC botches */
#  endif /* !defined(__GNUC__ ) */
#  if SECUREWARE
#   define FORK	fork		/* SecureWare wants the real fork! */
#  else /* SECUREWARE */
#   define FORK	vfork		/* the rest of the OS versions don't care */
#  endif /* SECUREWARE */
# endif /* _CONVEX_SOURCE */


/*
**  RISC/os 4.52
**
**	Gives a ton of warning messages, but otherwise compiles.
*/

# ifdef RISCOS

#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  ifndef HASFLOCK
#   define HASFLOCK	1	/* has flock(2) call */
#  endif /* ! HASFLOCK */
#  define WAITUNION	1	/* use "union wait" as wait argument type */
#  define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#  define NEEDPUTENV	1	/* need putenv(3) call */
#  define NEEDSTRSTR	1	/* need emulation of the strstr(3) call */
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  define LA_TYPE	LA_INT
#  define LA_AVENRUN	"avenrun"
#  define _PATH_UNIX	"/unix"
#  undef WIFEXITED

#  define setpgid	setpgrp

typedef int		pid_t;
#  define SIGFUNC_DEFINED
#  define SIGFUNC_RETURN	(0)
#  define SIGFUNC_DECL	int
typedef int		(*sigfunc_t)();
extern char		*getenv();
extern void		*malloc();

/* added for RISC/os 4.01...which is dumber than 4.50 */
#  ifdef RISCOS_4_0
#   ifndef ARBPTR_T
#    define ARBPTR_T	char *
#   endif /* ! ARBPTR_T */
#   undef HASFLOCK
#   define HASFLOCK	0
#  endif /* RISCOS_4_0 */

#  include <sys/time.h>

# endif /* RISCOS */


/*
**  Linux 0.99pl10 and above...
**
**  Thanks to, in reverse order of contact:
**
**	John Kennedy <warlock@csuchico.edu>
**	Andrew Pam <avatar@aus.xanadu.com>
**	Florian La Roche <rzsfl@rz.uni-sb.de>
**	Karl London <karl@borg.demon.co.uk>
**
**  NOTE: Override HASFLOCK as you will but, as of 1.99.6, mixed-style
**	file locking is no longer allowed.  In particular, make sure
**	your DBM library and sendmail are both using either flock(2)
**	*or* fcntl(2) file locking, but not both.
*/

# ifdef __linux__
#  include <linux/version.h>
#  if !defined(KERNEL_VERSION)	/* not defined in 2.0.x kernel series */
#   define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#  endif /* !defined(KERNEL_VERSION) */
#  define BSD		1	/* include BSD defines */
#  define HASSETREGID	1	/* use setregid(2) to set saved gid */
#  ifndef REQUIRES_DIR_FSYNC
#   define REQUIRES_DIR_FSYNC	1	/* requires fsync() on directory */
#  endif /* REQUIRES_DIR_FSYNC */
#  ifndef USESETEUID
#   define USESETEUID	0	/* has it due to POSIX, but doesn't work */
#  endif /* USESETEUID */
#  define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
#  define GIDSET_T	gid_t	/* from <linux/types.h> */
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* getusershell(3) broken in Slackware 2.0 */
#  endif /* HASGETUSERSHELL */
#  ifndef IP_SRCROUTE
#   define IP_SRCROUTE	0	/* linux <= 1.2.8 doesn't support IP_OPTIONS */
#  endif /* ! IP_SRCROUTE */
#  ifndef HAS_IN_H
#   define HAS_IN_H	1	/* use netinet/in.h */
#  endif /* ! HAS_IN_H */
#  ifndef USE_SIGLONGJMP
#   define USE_SIGLONGJMP	1 /* sigsetjmp needed for signal handling */
#  endif /* ! USE_SIGLONGJMP */
#  ifndef HASFLOCK
#   if LINUX_VERSION_CODE < 66399
#    define HASFLOCK	0	/* flock(2) is broken after 0.99.13 */
#   else /* LINUX_VERSION_CODE < 66399 */
#     if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
#      define HASFLOCK	1	/* flock(2) fixed after 1.3.95 */
#     else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) */
#      define HASFLOCK	0	/* flock(2) is broken (again) after 2.4.0 */
#     endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) */
#   endif /* LINUX_VERSION_CODE < 66399 */
#  endif /* ! HASFLOCK */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_PROCSTR
#  endif /* ! LA_TYPE */
#  define SFS_TYPE	SFS_VFS		/* use <sys/vfs.h> statfs() impl */
#  define SPT_PADCHAR	'\0'		/* pad process title with nulls */
#  if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,0,0))
#   ifndef HASURANDOMDEV
#    define HASURANDOMDEV 1	/* 2.0 (at least) has linux/drivers/char/random.c */
#   endif /* ! HASURANDOMDEV */
#  endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,0,0)) */
#  if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
#   define HASSTRERROR	1	/* has strerror(3) */
#  endif /* defined(__GLIBC__) && defined(__GLIBC_MINOR__) */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_NONE		/* no standard for Linux */
#  endif /* ! TZ_TYPE */
#  if (__GLIBC__ >= 2)
#   include <paths.h>
#  endif /* (__GLIBC__ >= 2) */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  include <sys/sysmacros.h>
#  undef atol			/* wounded in <stdlib.h> */
#  if NETINET6
   /*
   **  Linux doesn't have a good way to tell userland what interfaces are
   **  IPv6-capable.  Therefore, the BIND resolver can not determine if there
   **  are IPv6 interfaces to honor AI_ADDRCONFIG.  Unfortunately, it assumes
   **  that none are present.  (Excuse the macro name ADDRCONFIG_IS_BROKEN.)
   */
#   define ADDRCONFIG_IS_BROKEN	1

   /*
   **  Indirectly included from glibc's <feature.h>.  IPv6 support is native
   **  in 2.1 and later, but the APIs appear before the functions.
   */
#   if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
#    define GLIBC_VERSION ((__GLIBC__ << 8) + __GLIBC_MINOR__)
#    if (GLIBC_VERSION >= 0x201)
#     undef IPPROTO_ICMPV6	/* linux #defines, glibc enums */
#    else /* (GLIBC_VERSION >= 0x201) */
#     include <linux/in6.h>	/* IPv6 support */
#    endif /* (GLIBC_VERSION >= 0x201) */
#    if (GLIBC_VERSION >= 0x201 && !defined(NEEDSGETIPNODE))
     /* Have APIs in <netdb.h>, but no support in glibc */
#     define NEEDSGETIPNODE	1
#    endif /* (GLIBC_VERSION >= 0x201 && !defined(NEEDSGETIPNODE)) */
#    undef GLIBC_VERSION
#   endif /* defined(__GLIBC__) && defined(__GLIBC_MINOR__) */
#  endif /* NETINET6 */
#  ifndef HASFCHOWN
#   define HASFCHOWN	1	/* fchown(2) */
#  endif /* ! HASFCHOWN */
#  if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,0,36)) && !defined(HASFCHMOD)
#    define HASFCHMOD	1	/* fchmod(2) */
#  endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,0,36)) && !defined(HASFCHMOD) */
# endif /* __linux__ */


/*
**  DELL SVR4 Issue 2.2, and others
**	From Kimmo Suominen <kim@grendel.lut.fi>
**
**	It's on #ifdef DELL_SVR4 because Solaris also gets __svr4__
**	defined, and the definitions conflict.
**
**	Peter Wemm <peter@perth.DIALix.oz.au> claims that the setreuid
**	trick works on DELL 2.2 (SVR4.0/386 version 4.0) and ESIX 4.0.3A
**	(SVR4.0/386 version 3.0).
*/

# ifdef DELL_SVR4
				/* no changes necessary */
				/* see general __svr4__ defines below */
# endif /* DELL_SVR4 */


/*
**  Apple A/UX 3.0
*/

# ifdef _AUX_SOURCE
#  include <sys/sysmacros.h>
#  define BSD			/* has BSD routines */
#  define HASSETRLIMIT	0	/* ... but not setrlimit(2) */
#  define BROKEN_RES_SEARCH 1	/* res_search(unknown) returns h_errno=0 */
#  define BOGUS_O_EXCL	1	/* exclusive open follows symlinks */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASSETVBUF	1	/* has setvbuf(3) in libc */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define SIGFUNC_DEFINED	/* sigfunc_t already defined */
#  define SIGFUNC_RETURN		/* POSIX-mode */
#  define SIGFUNC_DECL	void	/* POSIX-mode */
#  define ERRLIST_PREDEFINED	1
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  ifndef LA_TYPE
#   define LA_TYPE	LA_INT
#   define FSHIFT	16
#  endif /* ! LA_TYPE */
#  define LA_AVENRUN	"avenrun"
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  define TZ_TYPE	TZ_TZNAME
#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/unix"		/* should be in <paths.h> */
#  endif /* ! _PATH_UNIX */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  undef WIFEXITED
#  undef WEXITSTATUS
# endif /* _AUX_SOURCE */


/*
**  Encore UMAX V
**
**	Not extensively tested.
*/

# ifdef UMAXV
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASSETVBUF	1	/* we have setvbuf(3) in libc */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define MAXPATHLEN	PATH_MAX
extern struct passwd	*getpwent(), *getpwnam(), *getpwuid();
extern struct group	*getgrent(), *getgrnam(), *getgrgid();
#  undef WIFEXITED
#  undef WEXITSTATUS
# endif /* UMAXV */


/*
**  Stardent Titan 3000 running TitanOS 4.2.
**
**	Must be compiled in "cc -43" mode.
**
**	From Kate Hedstrom <kate@ahab.rutgers.edu>.
**
**	Note the tweaking below after the BSD defines are set.
*/

# ifdef titan
#  define setpgid	setpgrp
typedef int		pid_t;
#  undef WIFEXITED
#  undef WEXITSTATUS
# endif /* titan */


/*
**  Sequent DYNIX 3.2.0
**
**	From Jim Davis <jdavis@cs.arizona.edu>.
*/

# ifdef sequent

#  define BSD		1
#  define HASUNSETENV	1
#  define BSD4_3		1	/* to get signal() in conf.c */
#  define WAITUNION	1
#  define LA_TYPE	LA_FLOAT
#  ifdef _POSIX_VERSION
#   undef _POSIX_VERSION		/* set in <unistd.h> */
#  endif /* _POSIX_VERSION */
#  undef HASSETVBUF		/* don't actually have setvbuf(3) */
#  define setpgid	setpgrp

/* Have to redefine WIFEXITED to take an int, to work with waitfor() */
#  undef	WIFEXITED
#  define WIFEXITED(s)	(((union wait*)&(s))->w_stopval != WSTOPPED && \
			 ((union wait*)&(s))->w_termsig == 0)
#  define WEXITSTATUS(s)	(((union wait*)&(s))->w_retcode)
typedef int		pid_t;
#  define isgraph(c)	(isprint(c) && (c != ' '))

#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */

#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/dynix"
#  endif /* ! _PATH_UNIX */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
# endif /* sequent */


/*
**  Sequent DYNIX/ptx v2.0 (and higher)
**
**	For DYNIX/ptx v1.x, undefine HASSETREUID.
**
**	From Tim Wright <timw@sequent.com>.
**	Update from Jack Woolley <jwoolley@sctcorp.com>, 26 Dec 1995,
**		for DYNIX/ptx 4.0.2.
*/

# ifdef _SEQUENT_
#  include <sys/stream.h>
#  define SYSTEM5	1	/* include all the System V defines */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  define GIDSET_T	gid_t
#  define LA_TYPE	LA_INT
#  define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
#  define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  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 /* _SEQUENT_ */

/*
**  Cray UNICOS, UNICOS/mk, and UNICOS/mp
**
**    UNICOS:
**	Ported by David L. Kensiski, Sterling Sofware <kensiski@nas.nasa.gov>
**	Update Brian Ginsbach <ginsbach@cray.com>
**    UNICOS/mk (Cray T3E):
**	Contributed by Manu Mahonen <mailadm@csc.fi>
**	of Center for Scientific Computing.
**	Update Brian Ginsbach <ginsbach@cray.com>
**    UNICOS/mp:
**	From Aaron Davis <awd@cray.com> & Brian Ginsbach <ginsbach@cray.com>
*/

# if defined(_CRAY) || defined(UNICOS) || defined(_UNICOSMP)
#  define SYSTEM5	1	/* include all the System V defines */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define HASFCHOWN	1	/* has fchown(2) */
#  define HASUNSETENV	1	/* has unsetenv(3) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASGETDTABLESIZE 1	/* has getdtablesize(2) syscall */
#  define HASSTRERROR	1	/* has strerror(3) */
#  define GIDSET_T	gid_t
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define SFS_BAVAIL	f_bfree	/* alternate field name */
#  define SAFENFSPATHCONF 1	/* pathconf(2) pessimizes on NFS filesystems */
#  ifdef UNICOS
#   define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#   define LA_TYPE	LA_ZERO
#   define _PATH_MAILDIR	"/usr/spool/mail"
#   define GET_IPOPT_DST(dst) *(struct in_addr *)&(dst)
#   ifndef MAXPATHLEN
#    define MAXPATHLEN PATHSIZE
#   endif /* ! MAXPATHLEN */
#   ifndef _PATH_UNIX
#    ifdef UNICOSMK
#     define _PATH_UNIX		"/unicosmk.ar"
#    else
#     define _PATH_UNIX		"/unicos"
#    endif /* UNICOSMK */
#   endif /* ! _PATH_UNIX */
#   ifndef _PATH_VENDOR_CF
#    define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#   endif /* ! _PATH_VENDOR_CF */
#  endif /* UNICOS */
#  ifdef _UNICOSMP
#  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) */
#   define HASGETUSERSHELL 0		/* does not have getusershell(3) call */
#   define HASSETRLIMIT	   1		/* has setrlimit(2) syscall */
#   define LA_TYPE	LA_IRIX6	/* figure out at run time */
#   include <sys/cdefs.h>
#   include <paths.h>
#   define ARGV_T char *const *
#  endif /* _UNICOSMP */
# endif /* _CRAY */

/*
**  Apollo DomainOS
**
**  From Todd Martin <tmartint@tus.ssi1.com> & Don Lewis <gdonl@gv.ssi1.com>
**
**  15 Jan 1994; updated 2 Aug 1995
**
*/

# ifdef apollo
#  define HASSETREUID	1	/* has setreuid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(2) call */
#  define IP_SRCROUTE	0	/* does not have <netinet/ip_var.h> */
#  define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
#  define LA_TYPE	LA_SUBR		/* use getloadavg.c */
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define TZ_TYPE	TZ_TZNAME
#  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 */
#  undef	 S_IFSOCK		/* S_IFSOCK and S_IFIFO are the same */
#  undef	 S_IFIFO
#  define S_IFIFO	0010000
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  define RLIMIT_NEEDS_SYS_TIME_H	1
#  if defined(NGROUPS_MAX) && !NGROUPS_MAX
#   undef NGROUPS_MAX
#  endif /* defined(NGROUPS_MAX) && !NGROUPS_MAX */
# endif /* apollo */

/*
**  MPE-iX
**
**	Requires MPE 6.0 or greater.  See sendmail/README for more info.
**
**	From Mark Bixby <mark_bixby@hp.com> or <mark@bixby.org>.
*/

# ifdef MPE

#  include <sys/sysmacros.h>
#  include <fcntl.h>

/* Sendmail stuff */
#  define HASFCHOWN		0	/* lacks fchown() */
#  define HASGETUSERSHELL	0	/* lacks getusershell() */
#  ifdef HASNICE
#   undef  HASNICE
#  endif /* HASNICE */
#  define HASNICE		0	/* lacks nice() */
#  define HASRANDOM		0	/* lacks random() */
#  ifdef HASRRESVPORT
#   undef HASRRESVPORT
#  endif /* HASRRESVPORT */
#  define HASRRESVPORT		0	/* lacks rresvport() */
#  define IP_SRCROUTE		0	/* lacks IP source routing fields */
#  ifdef MATCHGECOS
#   undef MATCHGECOS
#  endif /* MATCHGECOS */
#  define MATCHGECOS		0	/* lacks an initialized GECOS field */
#  define NEEDFSYNC		1	/* use sendmail's fsync() */
#  define NEEDLINK		1	/* use sendmail's link() */
#  define NOFTRUNCATE		1	/* lacks ftruncate() */
#  define SFS_TYPE		SFS_NONE /* can't determine disk space */
#  define SM_CONF_SYSLOG	0	/* use sendmail decl of syslog() */
#  define USE_DOUBLE_FORK	0	/* don't fork an intermediate zombie */
#  define USE_ENVIRON		1	/* use environ instead of envp */

/* Missing header stuff */
#  define AF_UNSPEC		0
#  define AF_MAX		AF_INET
#  define IFF_LOOPBACK		0x8
#  define IN_LOOPBACKNET	127
#  define MAXNAMLEN		NAME_MAX
#  define S_IEXEC		S_IXUSR
#  define S_IREAD		S_IRUSR
#  define S_IWRITE		S_IWUSR

/* Present header stuff that needs to be missing */
#  undef NGROUPS_MAX

/* Shadow functions */
#  define bind		sendmail_mpe_bind
#  define _exit		sendmail_mpe__exit
#  define exit		sendmail_mpe_exit
#  define fcntl		sendmail_mpe_fcntl
#  define getegid	sendmail_mpe_getegid
#  define geteuid	sendmail_mpe_geteuid
#  define getpwnam	sendmail_mpe_getpwnam
#  define getpwuid	sendmail_mpe_getpwuid
#  define setgid	sendmail_mpe_setgid
#  define setuid	sendmail_mpe_setuid
extern int		sendmail_mpe_fcntl __P((int, int, ...));
extern struct passwd *	sendmail_mpe_getpwnam __P((const char *));
extern struct passwd *	sendmail_mpe_getpwuid __P((uid_t));
# endif /* MPE */

/*
**  System V Rel 5.x (a.k.a Unixware7 w/o BSD-Compatibility Libs ie. native)
**
**	Contributed by Paul Gampe <paulg@apnic.net>
*/

# ifdef __svr5__
#  include <sys/mkdev.h>
#  define __svr4__
#  define SYS5SIGNALS		1
#  define HASFCHOWN		1	/* has fchown(2) call */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASSETREUID		1
#  define HASWAITPID		1
#  define HASGETDTABLESIZE	1
#  define GIDSET_T		gid_t
#  define SOCKADDR_LEN_T	size_t
#  define SOCKOPT_LEN_T		size_t
#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/stand/unix"
#  endif /* ! _PATH_UNIX */
#  define SPT_PADCHAR		'\0'	/* pad process title with nulls */
#  ifndef SYSLOG_BUFSIZE
#   define SYSLOG_BUFSIZE	1024	/* unsure */
#  endif /* ! SYSLOG_BUFSIZE */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/etc/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/etc/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  undef offsetof		/* avoid stddefs.h, sys/sysmacros.h conflict */
#if !defined(SM_SET_H_ERRNO) && defined(_REENTRANT)
# define SM_SET_H_ERRNO(err)	set_h_errno((err))
#endif /* ! SM_SET_H_ERRNO && _REENTRANT */
# endif /* __svr5__ */

/* ###################################################################### */

/*
**  UnixWare 2.x
*/

# ifdef UNIXWARE2
#  define UNIXWARE	1
#  undef offsetof		/* avoid stddefs.h, sys/sysmacros.h conflict */
# endif /* UNIXWARE2 */


/*
**  UnixWare 1.1.2.
**
**	Updated by Petr Lampa <lampa@fee.vutbr.cz>.
**	From Evan Champion <evanc@spatial.synapse.org>.
*/

# ifdef UNIXWARE
#  include <sys/mkdev.h>
#  define SYSTEM5		1
#  define HASGETUSERSHELL	0	/* does not have getusershell(3) call */
#  define HASSETREUID		1
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASINITGROUPS		1
#  define GIDSET_T		gid_t
#  define SLEEP_T		unsigned
#  define SFS_TYPE		SFS_STATVFS
#  define LA_TYPE		LA_ZERO
#  undef WIFEXITED
#  undef WEXITSTATUS
#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/unix"
#  endif /* ! _PATH_UNIX */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/ucblib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  define SYSLOG_BUFSIZE	128
# endif /* UNIXWARE */


/*
**  Intergraph CLIX 3.1
**
**	From Paul Southworth <pauls@locust.cic.net>
*/

# ifdef CLIX
#  define SYSTEM5	1	/* looks like System V */
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  endif /* ! HASGETUSERSHELL */
#  define DEV_BSIZE	512	/* device block size not defined */
#  define GIDSET_T	gid_t
#  undef LOG			/* syslog not available */
#  define NEEDFSYNC	1	/* no fsync in system library */
#  define GETSHORT	_getshort
# endif /* CLIX */


/*
**  NCR MP-RAS 2.x (SysVr4) with Wollongong TCP/IP
**
**	From Kevin Darcy <kevin@tech.mis.cfc.com>.
*/

# ifdef NCR_MP_RAS2
#  include <sys/sockio.h>
#  define __svr4__
#  define IP_SRCROUTE	0	/* Something is broken with getsockopt() */
#  define SYSLOG_BUFSIZE	1024
#  define SPT_TYPE  SPT_NONE
# endif /* NCR_MP_RAS2 */


/*
**  NCR MP-RAS 3.x (SysVr4) with STREAMware TCP/IP
**
**	From Tom Moore <Tom.Moore@DaytonOH.NCR.COM>
*/

# ifdef NCR_MP_RAS3
#  define __svr4__
#  define HASFCHOWN		1	/* has fchown(2) call */
#  define LDA_USE_LOCKF		1
#  define SIOCGIFNUM_IS_BROKEN	1	/* SIOCGIFNUM has non-std interface */
#  define SO_REUSEADDR_IS_BROKEN	1	/* doesn't work if accept() fails */
#  define SYSLOG_BUFSIZE	1024
#  define SPT_TYPE	SPT_NONE
#  define _PATH_MAILDIR	"/var/mail"
#  ifndef _XOPEN_SOURCE
#   define _XOPEN_SOURCE
#   define _XOPEN_SOURCE_EXTENDED 1
#   include <sys/resource.h>
#   undef _XOPEN_SOURCE
#   undef _XOPEN_SOURCE_EXTENDED
#  endif /* ! _XOPEN_SOURCE */
# endif /* NCR_MP_RAS3 */


/*
**  Tandem NonStop-UX SVR4
**
**	From Rick McCarty <mccarty@mpd.tandem.com>.
*/

# ifdef NonStop_UX_BXX
#  define __svr4__
# endif /* NonStop_UX_BXX */


/*
**  Hitachi 3050R/3050RX and 3500 Workstations running HI-UX/WE2.
**
**	Tested for 1.04, 1.03
**	From Akihiro Hashimoto ("Hash") <hash@dominic.ipc.chiba-u.ac.jp>.
**
**	Tested for 4.02, 6.10 and 7.10
**	From Motonori NAKAMURA <motonori@media.kyoto-u.ac.jp>.
*/

# if !defined(__hpux) && (defined(_H3050R) || defined(_HIUX_SOURCE))
#  define SYSTEM5	1	/* include all the System V defines */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define HASFCHMOD	1	/* has fchmod(2) syscall */
#  define setreuid(r, e)	setresuid(r, e, -1)
#  define LA_TYPE	LA_FLOAT
#  define SPT_TYPE	SPT_PSTAT
#  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
#  ifndef HASSETVBUF
#   define HASSETVBUF	/* HI-UX has no setlinebuf */
#  endif /* ! HASSETVBUF */
#  ifndef GIDSET_T
#   define GIDSET_T	gid_t
#  endif /* ! GIDSET_T */
#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/HI-UX"
#  endif /* ! _PATH_UNIX */
#  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 */
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* getusershell(3) causes core dumps */
#  endif /* ! HASGETUSERSHELL */
#  define FDSET_CAST	(int *)	/* cast for fd_set parameters to select */

/*
**  avoid m_flags conflict between Berkeley DB 1.85 db.h & sys/sysmacros.h
**  on HIUX 3050
*/
#  undef m_flags

#  define SM_CONF_SYSLOG	0

# endif /* !defined(__hpux) && (defined(_H3050R) || defined(_HIUX_SOURCE)) */


/*
**  Amdahl UTS System V 2.1.5 (SVr3-based)
**
**    From: Janet Jackson <janet@dialix.oz.au>.
*/

# ifdef _UTS
#  include <sys/sysmacros.h>
#  undef HASLSTAT		/* has symlinks, but they cause problems */
#  define NEEDFSYNC	1	/* system fsync(2) fails on non-EFS filesys */
#  define SYS5SIGNALS	1	/* System V signal semantics */
#  define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define HASINITGROUPS	1	/* has initgroups(3) function */
#  define HASSETVBUF	1	/* has setvbuf(3) function */
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* does not have getusershell(3) function */
#  endif /* ! HASGETUSERSHELL */
#  define GIDSET_T	gid_t	/* type of 2nd arg to getgroups(2) isn't int */
#  define LA_TYPE	LA_ZERO		/* doesn't have load average */
#  define SFS_TYPE	SFS_4ARGS	/* use 4-arg statfs() */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define _PATH_UNIX		"/unix"
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
# endif /* _UTS */

/*
**  Cray Computer Corporation's CSOS
**
**	From Scott Bolte <scott@craycos.com>.
*/

# ifdef _CRAYCOM
#  define SYSTEM5	1	/* include all the System V defines */
#  define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  define NEEDFSYNC	1	/* no fsync in system library */
#  define MAXPATHLEN	PATHSIZE
#  define LA_TYPE	LA_ZERO
#  define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#  define SFS_BAVAIL	f_bfree		/* alternate field name */
#  define _POSIX_CHOWN_RESTRICTED	-1
extern struct group	*getgrent(), *getgrnam(), *getgrgid();
# endif /* _CRAYCOM */


/*
**  Sony NEWS-OS 4.2.1R and 6.0.3
**
**	From Motonori NAKAMURA <motonori@cs.ritsumei.ac.jp>.
*/

# ifdef sony_news
#  ifndef __svr4
			/* NEWS-OS 4.2.1R */
#   ifndef BSD
#    define BSD			/* has BSD routines */
#   endif /* ! BSD */
#   define HASUNSETENV	1	/* has unsetenv(2) call */
#   undef HASSETVBUF		/* don't actually have setvbuf(3) */
#   define WAITUNION	1	/* use "union wait" as wait argument type */
#   define LA_TYPE	LA_INT
#   define SFS_TYPE	SFS_VFS /* use <sys/vfs.h> statfs() implementation */
#   ifndef HASFLOCK
#    define HASFLOCK	1	/* has flock(2) call */
#   endif /* ! HASFLOCK */
#   define setpgid	setpgrp
#   undef WIFEXITED
#   undef WEXITSTATUS
#   define MODE_T	int	/* system include files have no mode_t */
typedef int		pid_t;
typedef int		(*sigfunc_t)();
#   define SIGFUNC_DEFINED
#   define SIGFUNC_RETURN	(0)
#   define SIGFUNC_DECL		int

#  else /* ! __svr4 */
			/* NEWS-OS 6.0.3 with /bin/cc */
#   ifndef __svr4__
#    define __svr4__		/* use all System V Release 4 defines below */
#   endif /* ! __svr4__ */
#   define HASSETSID	1	/* has POSIX setsid(2) call */
#   define HASGETUSERSHELL 1	/* DOES have getusershell(3) call in libc */
#   define LA_TYPE	LA_READKSYM	/* use MIOC_READKSYM ioctl */
#   ifndef SPT_TYPE
#    define SPT_TYPE	SPT_SYSMIPS	/* use sysmips() (OS 6.0.2 or later) */
#   endif /* ! SPT_TYPE */
#   define GIDSET_T	gid_t
#   undef WIFEXITED
#   undef WEXITSTATUS
#   ifndef SYSLOG_BUFSIZE
#    define SYSLOG_BUFSIZE	256
#   endif /* ! SYSLOG_BUFSIZE */
#   define _PATH_UNIX		"/stand/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 */

#  endif /* ! __svr4 */
# endif /* sony_news */


/*
**  Omron LUNA/UNIOS-B 3.0, LUNA2/Mach and LUNA88K Mach
**
**	From Motonori NAKAMURA <motonori@cs.ritsumei.ac.jp>.
*/

# ifdef luna
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
#  define HASUNSETENV	1	/* has unsetenv(2) call */
#  define NEEDPUTENV	1	/* need putenv(3) call */
#  define SM_CONF_GETOPT	0	/* need a replacement for getopt(3) */
#  define NEEDSTRSTR	1	/* need emulation of the strstr(3) call */
#  define WAITUNION	1	/* use "union wait" as wait argument type */
#  ifdef uniosb
#   include <sys/time.h>
#   define NEEDVPRINTF	1	/* need a replacement for vprintf(3) */
#   define LA_TYPE	LA_INT
#   define TZ_TYPE	TZ_TM_ZONE	/* use tm->tm_zone */
#  endif /* uniosb */
#  ifdef luna2
#   define LA_TYPE	LA_SUBR
#   define TZ_TYPE	TZ_TM_ZONE	/* use tm->tm_zone */
#  endif /* luna2 */
#  ifdef luna88k
#   define LA_TYPE	LA_INT
#  endif /* luna88k */
#  define SFS_TYPE	SFS_VFS /* use <sys/vfs.h> statfs() implementation */
#  define setpgid	setpgrp
#  undef WIFEXITED
#  undef WEXITSTATUS
typedef int		pid_t;
typedef int		(*sigfunc_t)();
#  define SIGFUNC_DEFINED
#  define SIGFUNC_RETURN	(0)
#  define SIGFUNC_DECL	int
extern char	*getenv();
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/lib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
# endif /* luna */


/*
**  NEC EWS-UX/V 4.2 (with /usr/ucb/cc)
**
**	From Motonori NAKAMURA <motonori@cs.ritsumei.ac.jp>.
*/

# if defined(nec_ews_svr4) || defined(_nec_ews_svr4)
#  ifndef __svr4__
#   define __svr4__		/* use all System V Release 4 defines below */
#  endif /* ! __svr4__ */
#  define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define LA_TYPE	LA_READKSYM	/* use MIOC_READSYM ioctl */
#  define SFS_TYPE	SFS_USTAT	/* use System V ustat(2) syscall */
#  define GIDSET_T	gid_t
#  undef WIFEXITED
#  undef WEXITSTATUS
#  define NAMELISTMASK	0x7fffffff	/* mask for nlist() values */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/ucblib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  ifndef SYSLOG_BUFSIZE
#   define SYSLOG_BUFSIZE	1024	/* allow full size syslog buffer */
#  endif /* ! SYSLOG_BUFSIZE */
# endif /* defined(nec_ews_svr4) || defined(_nec_ews_svr4) */


/*
**  Fujitsu/ICL UXP/DS (For the DS/90 Series)
**
**	From Diego R. Lopez <drlopez@cica.es>.
**	Additional changes from Fumio Moriya and Toshiaki Nomura of the
**		Fujitsu Fresoftware group <dsfrsoft@oai6.yk.fujitsu.co.jp>.
*/

# ifdef __uxp__
#  include <arpa/nameser.h>
#  include <sys/sysmacros.h>
#  include <sys/mkdev.h>
#  define __svr4__
#  define HASGETUSERSHELL	0
#  define HASFLOCK		0
#  define _PATH_UNIX		"/stand/unix"
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/ucblib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
# endif /* __uxp__ */

/*
**  Pyramid DC/OSx
**
**	From Earle Ake <akee@wpdiss1.wpafb.af.mil>.
*/

# ifdef DCOSx
#  define GIDSET_T	gid_t
#  ifndef IDENTPROTO
#   define IDENTPROTO	0	/* TCP/IP implementation is broken */
#  endif /* ! IDENTPROTO */
# endif /* DCOSx */

/*
**  Concurrent Computer Corporation Maxion
**
**	From Donald R. Laster Jr. <laster@access.digex.net>.
*/

# ifdef __MAXION__

#  include <sys/stream.h>
#  define __svr4__		1	/* SVR4.2MP */
#  define HASSETREUID		1	/* have setreuid(2) */
#  define HASLSTAT		1	/* have lstat(2) */
#  define HASSETRLIMIT		1	/* have setrlimit(2) */
#  define HASGETDTABLESIZE	1	/* have getdtablesize(2) */
#  define HASGETUSERSHELL	1	/* have getusershell(3) */
#  define NOFTRUNCATE		1	/* do not have ftruncate(2) */
#  define SLEEP_T		unsigned
#  define SFS_TYPE		SFS_STATVFS
#  define SFS_BAVAIL		f_bavail
#  ifndef SYSLOG_BUFSIZE
#   define SYSLOG_BUFSIZE	256	/* Use 256 bytes */
#  endif /* ! SYSLOG_BUFSIZE */

#  undef WUNTRACED
#  undef WIFEXITED
#  undef WIFSIGNALED
#  undef WIFSTOPPED
#  undef WEXITSTATUS
#  undef WTERMSIG
#  undef WSTOPSIG

# endif /* __MAXION__ */

/*
**  Harris Nighthawk PowerUX (nh6000 box)
**
**  Contributed by Bob Miorelli, Pratt & Whitney <miorelli@pweh.com>
*/

# ifdef _PowerUX
#  ifndef __svr4__
#   define __svr4__
#  endif /* ! __svr4__ */
#  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 */
#  define SYSLOG_BUFSIZE		1024
#  define LA_TYPE		LA_ZERO
typedef struct msgb		mblk_t;
#  undef offsetof	/* avoid stddefs.h and sys/sysmacros.h conflict */
# endif /* _PowerUX */

/*
**  Siemens Nixdorf Informationssysteme AG SINIX
**
**	Contributed by Gerald Rinske of Siemens Business Services VAS.
*/
# ifdef sinix
#  define HASRANDOM		0	/* has random(3) */
#  define SYSLOG_BUFSIZE	1024
#  define SM_INT32		int	/* 32bit integer */
# endif /* sinix */


/*
**  Motorola 922, MC88110, UNIX SYSTEM V/88 Release 4.0 Version 4.3
**
**	Contributed by Sergey Rusanov <rsm@utfoms.udmnet.ru>
*/

# ifdef MOTO
#  define HASFCHMOD		1
#  define HASSETRLIMIT		0
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASSETREUID		1
#  define HASULIMIT		1
#  define HASWAITPID		1
#  define HASGETDTABLESIZE	1
#  define HASGETUSERSHELL	1
#  define IP_SRCROUTE		0
#  define IDENTPROTO		0
#  define RES_DNSRCH_VARIABLE	_res_dnsrch
#  define _PATH_UNIX		"/unix"
#  define _PATH_VENDOR_CF	"/etc/sendmail.cf"
#  define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
# endif /* MOTO */

/*
**  Interix
**	Contributed by Nedelcho Stanev <nedelcho.stanev@atlanticsky.com>
**
**	Used for Interix support.
*/

# if defined(__INTERIX)
#  define HASURANDOMDEV		1
#  define HASGETUSERSHELL	0
#  define HASSTRERROR		1
#  define HASUNSETENV		1
#  define HASFCHOWN		1
#  undef HAVE_SYS_ERRLIST
#  define sys_errlist		__sys_errlist
#  define sys_nerr		__sys_nerr
#  include <sys/mkdev.h>
#  ifndef major
#   define major(dev)		((int)(((dev) >> 8) & 0xff))
#  endif /* ! major */
#  ifndef minor
#   define minor(dev)		((int)((dev) & 0xff))
#  endif /* ! minor */
# endif /* defined(__INTERIX) */


/**********************************************************************
**  End of Per-Operating System defines
**********************************************************************/
/**********************************************************************
**  More general defines
**********************************************************************/

/* general BSD defines */
# ifdef BSD
#  define HASGETDTABLESIZE 1	/* has getdtablesize(2) call */
#  ifndef HASSETREUID
#   define HASSETREUID	1	/* has setreuid(2) call */
#  endif /* ! HASSETREUID */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  ifndef IP_SRCROUTE
#   define IP_SRCROUTE	1	/* can check IP source routing */
#  endif /* ! IP_SRCROUTE */
#  ifndef HASSETRLIMIT
#   define HASSETRLIMIT	1	/* has setrlimit(2) call */
#  endif /* ! HASSETRLIMIT */
#  ifndef HASFLOCK
#   define HASFLOCK	1	/* has flock(2) call */
#  endif /* ! HASFLOCK */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_TM_ZONE	/* use tm->tm_zone variable */
#  endif /* ! TZ_TYPE */
# endif /* BSD */

/* general System V Release 4 defines */
# ifdef __svr4__
#  define SYSTEM5	1
#  define USESETEUID	1	/* has usable seteuid(2) call */
#  define HASINITGROUPS	1	/* has initgroups(3) call */
#  define BSD_COMP	1	/* get BSD ioctl calls */
#  ifndef HASSETRLIMIT
#   define HASSETRLIMIT	1	/* has setrlimit(2) call */
#  endif /* ! HASSETRLIMIT */
#  ifndef HASGETUSERSHELL
#   define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
#  endif /* ! HASGETUSERSHELL */
#  ifndef HASFCHMOD
#   define HASFCHMOD	1	/* most (all?) SVr4s seem to have fchmod(2) */
#  endif /* ! HASFCHMOD */

#  ifndef _PATH_UNIX
#   define _PATH_UNIX		"/unix"
#  endif /* ! _PATH_UNIX */
#  ifndef _PATH_VENDOR_CF
#   define _PATH_VENDOR_CF	"/usr/ucblib/sendmail.cf"
#  endif /* ! _PATH_VENDOR_CF */
#  ifndef _PATH_SENDMAILPID
#   define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
#  endif /* ! _PATH_SENDMAILPID */
#  ifndef SYSLOG_BUFSIZE
#   define SYSLOG_BUFSIZE	128
#  endif /* ! SYSLOG_BUFSIZE */
#  ifndef SFS_TYPE
#   define SFS_TYPE		SFS_STATVFS
#  endif /* ! SFS_TYPE */

#  ifndef USE_SIGLONGJMP
#   define USE_SIGLONGJMP	1 /* sigsetjmp needed for signal handling */
#  endif /* ! USE_SIGLONGJMP */
# endif /* __svr4__ */

# ifdef __SVR4
#  define LDA_USE_LOCKF		1
#  define LDA_USE_SETEUID	1
#  define _PATH_MAILDIR		"/var/mail"
# endif /* __SVR4 */

/* general System V defines */
# ifdef SYSTEM5
#  include <sys/sysmacros.h>
#  define HASUNAME	1	/* use System V uname(2) system call */
#  define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
#  define HASSETVBUF	1	/* we have setvbuf(3) in libc */
#  ifndef HASULIMIT
#   define HASULIMIT	1	/* has the ulimit(2) syscall */
#  endif /* ! HASULIMIT */
#  ifndef LA_TYPE
#   ifdef MIOC_READKSYM
#    define LA_TYPE	LA_READKSYM	/* use MIOC_READKSYM ioctl */
#   else /* MIOC_READKSYM */
#    define LA_TYPE	LA_INT		/* assume integer load average */
#   endif /* MIOC_READKSYM */
#  endif /* ! LA_TYPE */
#  ifndef SFS_TYPE
#   define SFS_TYPE	SFS_USTAT	/* use System V ustat(2) syscall */
#  endif /* ! SFS_TYPE */
#  ifndef TZ_TYPE
#   define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
#  endif /* ! TZ_TYPE */
# endif /* SYSTEM5 */

/* general POSIX defines */
# ifdef _POSIX_VERSION
#  define HASSETSID	1	/* has POSIX setsid(2) call */
#  define HASWAITPID	1	/* has POSIX waitpid(2) call */
#  if _POSIX_VERSION >= 199500 && !defined(USESETEUID)
#   define USESETEUID	1	/* has usable seteuid(2) call */
#  endif /* _POSIX_VERSION >= 199500 && !defined(USESETEUID) */
# endif /* _POSIX_VERSION */
/*
**  Tweaking for systems that (for example) claim to be BSD or POSIX
**  but don't have all the standard BSD or POSIX routines (boo hiss).
*/

# ifdef titan
#  undef HASINITGROUPS		/* doesn't have initgroups(3) call */
# endif /* titan */

# ifdef _CRAYCOM
#  undef HASSETSID		/* despite POSIX claim, doesn't have setsid */
# endif /* _CRAYCOM */

# ifdef MOTO
#  undef USESETEUID
# endif /* MOTO */

/*
**  Due to a "feature" in some operating systems such as Ultrix 4.3 and
**  HPUX 8.0, if you receive a "No route to host" message (ICMP message
**  ICMP_UNREACH_HOST) on _any_ connection, all connections to that host
**  are closed.  Some firewalls return this error if you try to connect
**  to the IDENT port (113), so you can't receive email from these hosts
**  on these systems.  The firewall really should use a more specific
**  message such as ICMP_UNREACH_PROTOCOL or _PORT or _FILTER_PROHIB.  If
**  not explicitly set to zero above, default it on.
*/

# ifndef IDENTPROTO
#  define IDENTPROTO	1	/* use IDENT proto (RFC 1413) */
# endif /* ! IDENTPROTO */

# ifndef IP_SRCROUTE
#  define IP_SRCROUTE	1	/* Detect IP source routing */
# endif /* ! IP_SRCROUTE */

# ifndef HASGETUSERSHELL
#  define HASGETUSERSHELL 1	/* libc has getusershell(3) call */
# endif /* ! HASGETUSERSHELL */

# ifndef NETUNIX
#  define NETUNIX	1	/* include unix domain support */
# endif /* ! NETUNIX */

# ifndef HASRANDOM
#  define HASRANDOM	1	/* has random(3) support */
# endif /* ! HASRANDOM */

# ifndef HASFLOCK
#  define HASFLOCK	0	/* assume no flock(2) support */
# endif /* ! HASFLOCK */

# ifndef HASSETREUID
#  define HASSETREUID	0	/* assume no setreuid(2) call */
# endif /* ! HASSETREUID */

# ifndef HASFCHMOD
#  define HASFCHMOD	0	/* assume no fchmod(2) syscall */
# endif /* ! HASFCHMOD */

# ifndef USESETEUID
#  define USESETEUID	0	/* assume no seteuid(2) call or no saved ids */
# endif /* ! USESETEUID */

# ifndef HASSETRLIMIT
#  define HASSETRLIMIT	0	/* assume no setrlimit(2) support */
# endif /* ! HASSETRLIMIT */

# ifndef HASULIMIT
#  define HASULIMIT	0	/* assume no ulimit(2) support */
# endif /* ! HASULIMIT */

# ifndef SECUREWARE
#  define SECUREWARE	0	/* assume no SecureWare C2 auditing hooks */
# endif /* ! SECUREWARE */

# ifndef USE_DOUBLE_FORK
#  define USE_DOUBLE_FORK	1	/* avoid intermediate zombies */
# endif /* ! USE_DOUBLE_FORK */

# ifndef USE_ENVIRON
#  define USE_ENVIRON	0	/* use main() envp instead of extern environ */
# endif /* ! USE_ENVIRON */

# ifndef USE_SIGLONGJMP
#  define USE_SIGLONGJMP	0	/* assume setjmp handles signals properly */
# endif /* ! USE_SIGLONGJMP */

# ifndef FDSET_CAST
#  define FDSET_CAST		/* (empty) cast for fd_set arg to select */
# endif /* ! FDSET_CAST */

/*
**  Pick a mailer setuid method for changing the current uid
*/

# define USE_SETEUID	0
# define USE_SETREUID	1
# define USE_SETUID	2

# if USESETEUID
#  define MAILER_SETUID_METHOD	USE_SETEUID
# else /* USESETEUID */
#  if HASSETREUID
#   define MAILER_SETUID_METHOD	USE_SETREUID
#  else /* HASSETREUID */
#   define MAILER_SETUID_METHOD	USE_SETUID
#  endif /* HASSETREUID */
# endif /* USESETEUID */

/*
**  If no type for argument two of getgroups call is defined, assume
**  it's an integer -- unfortunately, there seem to be several choices
**  here.
*/

# ifndef GIDSET_T
#  define GIDSET_T	int
# endif /* ! GIDSET_T */

# ifndef UID_T
#  define UID_T		uid_t
# endif /* ! UID_T */

# ifndef GID_T
#  define GID_T		gid_t
# endif /* ! GID_T */

# ifndef MODE_T
#  define MODE_T		mode_t
# endif /* ! MODE_T */

# ifndef ARGV_T
#  define ARGV_T		char **
# endif /* ! ARGV_T */

# ifndef SOCKADDR_LEN_T
#  define SOCKADDR_LEN_T	int
# endif /* ! SOCKADDR_LEN_T */

# ifndef SOCKOPT_LEN_T
#  define SOCKOPT_LEN_T	int
# endif /* ! SOCKOPT_LEN_T */

# ifndef QUAD_T
#  define QUAD_T	unsigned long
# endif /* ! QUAD_T */
/**********************************************************************
**  Remaining definitions should never have to be changed.  They are
**  primarily to provide back compatibility for older systems -- for
**  example, it includes some POSIX compatibility definitions
**********************************************************************/

/* System 5 compatibility */
# ifndef S_ISREG
#  define S_ISREG(foo)	((foo & S_IFMT) == S_IFREG)
# endif /* ! S_ISREG */
# ifndef S_ISDIR
#  define S_ISDIR(foo)	((foo & S_IFMT) == S_IFDIR)
# endif /* ! S_ISDIR */
# if !defined(S_ISLNK) && defined(S_IFLNK)
#  define S_ISLNK(foo)	((foo & S_IFMT) == S_IFLNK)
# endif /* !defined(S_ISLNK) && defined(S_IFLNK) */
# if !defined(S_ISFIFO)
#  if defined(S_IFIFO)
#   define S_ISFIFO(foo)	((foo & S_IFMT) == S_IFIFO)
#  else /* defined(S_IFIFO) */
#   define S_ISFIFO(foo)	false
#  endif /* defined(S_IFIFO) */
# endif /* !defined(S_ISFIFO) */
# ifndef S_IRUSR
#  define S_IRUSR		0400
# endif /* ! S_IRUSR */
# ifndef S_IWUSR
#  define S_IWUSR		0200
# endif /* ! S_IWUSR */
# ifndef S_IRGRP
#  define S_IRGRP		0040
# endif /* ! S_IRGRP */
# ifndef S_IWGRP
#  define S_IWGRP		0020
# endif /* ! S_IWGRP */
# ifndef S_IROTH
#  define S_IROTH		0004
# endif /* ! S_IROTH */
# ifndef S_IWOTH
#  define S_IWOTH		0002
# endif /* ! S_IWOTH */

/* close-on-exec flag */
# ifndef FD_CLOEXEC
#  define FD_CLOEXEC	1
# endif /* ! FD_CLOEXEC */

/*
**  Older systems don't have this error code -- it should be in
**  /usr/include/sysexits.h.
*/

# ifndef EX_CONFIG
#  define EX_CONFIG	78	/* configuration error */
# endif /* ! EX_CONFIG */

/* pseudo-codes */
# define EX_QUIT	22	/* drop out of server immediately */
# define EX_RESTART	23	/* restart sendmail daemon */
# define EX_SHUTDOWN	24	/* shutdown sendmail daemon */

#ifndef EX_NOTFOUND
# define EX_NOTFOUND	EX_NOHOST
#endif /* ! EX_NOTFOUND */

/* pseudo-code used for mci_setstat */
# define EX_NOTSTICKY	(-5)	/* don't save persistent status */


/*
**  An "impossible" file mode to indicate that the file does not exist.
*/

# define ST_MODE_NOFILE	0171147		/* unlikely to occur */


/* type of arbitrary pointer */
# ifndef ARBPTR_T
#  define ARBPTR_T	void *
# endif /* ! ARBPTR_T */

# ifndef __P
#  include "sm/cdefs.h"
# endif /* ! __P */

# if HESIOD && !defined(NAMED_BIND)
#  define NAMED_BIND	1	/* not one without the other */
# endif /* HESIOD && !defined(NAMED_BIND) */

#  if NAMED_BIND && !defined( __ksr__ ) && !defined( h_errno )
extern int	h_errno;
#  endif /* NAMED_BIND && !defined( __ksr__ ) && !defined( h_errno ) */

# if NEEDPUTENV
extern int	putenv __P((char *));
# endif /* NEEDPUTENV */

#if !HASUNSETENV
extern void	unsetenv __P((char *));
#endif /* !HASUNSETENV */

# ifdef LDAPMAP
#  include <sys/time.h>
#  include <lber.h>
#  include <ldap.h>

/* Some LDAP constants */
#  define LDAPMAP_FALSE		0
#  define LDAPMAP_TRUE		1

/*
**  ldap_init(3) is broken in Umich 3.x and OpenLDAP 1.0/1.1.
**  Use the lack of LDAP_OPT_SIZELIMIT to detect old API implementations
**  and assume (falsely) that all old API implementations are broken.
**  (OpenLDAP 1.2 and later have a working ldap_init(), add -DUSE_LDAP_INIT)
*/

#  if defined(LDAP_OPT_SIZELIMIT) && !defined(USE_LDAP_INIT)
#   define USE_LDAP_INIT	1
#  endif /* defined(LDAP_OPT_SIZELIMIT) && !defined(USE_LDAP_INIT) */

/*
**  LDAP_OPT_SIZELIMIT is not defined under Umich 3.x nor OpenLDAP 1.x,
**  hence ldap_set_option() must not exist.
*/

#  if defined(LDAP_OPT_SIZELIMIT) && !defined(USE_LDAP_SET_OPTION)
#   define USE_LDAP_SET_OPTION	1
#  endif /* defined(LDAP_OPT_SIZELIMIT) && !defined(USE_LDAP_SET_OPTION) */

# endif /* LDAPMAP */

# if HASUNAME
#  include <sys/utsname.h>
#  ifdef newstr
#   undef newstr
#  endif /* newstr */
# else /* HASUNAME */
#  define NODE_LENGTH 32
struct utsname
{
	char nodename[NODE_LENGTH + 1];
};
# endif /* HASUNAME */

# if !defined(MAXHOSTNAMELEN) && !defined(_SCO_unix_) && !defined(NonStop_UX_BXX) && !defined(ALTOS_SYSTEM_V)
#  define MAXHOSTNAMELEN	256
# endif /* !defined(MAXHOSTNAMELEN) && !defined(_SCO_unix_) && !defined(NonStop_UX_BXX) && !defined(ALTOS_SYSTEM_V) */


# if _FFR_LINUX_MHNL && defined(__linux__) && MAXHOSTNAMELEN < 255
   /*
   **  override Linux wierdness: a FQHN can be 255 chars long
   **  SUSv3 requires HOST_NAME_MAX ("Maximum length of a host
   **  name (not including the terminating null) as returned from the
   **  gethostname() function.") to be at least 255.  c.f.:
   **  http://www.opengroup.org/onlinepubs/009695399
   **  but Linux defines that to 64 too.
   */
#  undef MAXHOSTNAMELEN
#  define MAXHOSTNAMELEN	256
# endif /* _FFR_LINUX_MHNL && defined(__linux__) && MAXHOSTNAMELEN < 255 */

# if !defined(SIGCHLD) && defined(SIGCLD)
#  define SIGCHLD	SIGCLD
# endif /* !defined(SIGCHLD) && defined(SIGCLD) */

# ifndef STDIN_FILENO
#  define STDIN_FILENO	0
# endif /* ! STDIN_FILENO */

# ifndef STDOUT_FILENO
#  define STDOUT_FILENO	1
# endif /* ! STDOUT_FILENO */

# ifndef STDERR_FILENO
#  define STDERR_FILENO	2
# endif /* ! STDERR_FILENO */

# ifndef LOCK_SH
#  define LOCK_SH	0x01	/* shared lock */
#  define LOCK_EX	0x02	/* exclusive lock */
#  define LOCK_NB	0x04	/* non-blocking lock */
#  define LOCK_UN	0x08	/* unlock */
# endif /* ! LOCK_SH */

# ifndef S_IXOTH
#  define S_IXOTH	(S_IEXEC >> 6)
# endif /* ! S_IXOTH */

# ifndef S_IXGRP
#  define S_IXGRP	(S_IEXEC >> 3)
# endif /* ! S_IXGRP */

# ifndef S_IXUSR
#  define S_IXUSR	(S_IEXEC)
# endif /* ! S_IXUSR */

#ifndef O_ACCMODE
# define O_ACCMODE	(O_RDONLY|O_WRONLY|O_RDWR)
#endif /* ! O_ACCMODE */

# ifndef SEEK_SET
#  define SEEK_SET	0
#  define SEEK_CUR	1
#  define SEEK_END	2
# endif /* ! SEEK_SET */

# ifndef SIG_ERR
#  define SIG_ERR	((void (*)()) -1)
# endif /* ! SIG_ERR */

# ifndef WEXITSTATUS
#  define WEXITSTATUS(st)	(((st) >> 8) & 0377)
# endif /* ! WEXITSTATUS */
# ifndef WIFEXITED
#  define WIFEXITED(st)		(((st) & 0377) == 0)
# endif /* ! WIFEXITED */
# ifndef WIFSTOPPED
#  define WIFSTOPPED(st)		(((st) & 0100) == 0)
# endif /* ! WIFSTOPPED */
# ifndef WCOREDUMP
#  define WCOREDUMP(st)		(((st) & 0200) != 0)
# endif /* ! WCOREDUMP */
# ifndef WTERMSIG
#  define WTERMSIG(st)		(((st) & 0177))
# endif /* ! WTERMSIG */

# ifndef SIGFUNC_DEFINED
typedef void		(*sigfunc_t) __P((int));
# endif /* ! SIGFUNC_DEFINED */
# ifndef SIGFUNC_RETURN
#  define SIGFUNC_RETURN
# endif /* ! SIGFUNC_RETURN */
# ifndef SIGFUNC_DECL
#  define SIGFUNC_DECL	void
# endif /* ! SIGFUNC_DECL */

/* size of syslog buffer */
# ifndef SYSLOG_BUFSIZE
#  define SYSLOG_BUFSIZE	1024
# endif /* ! SYSLOG_BUFSIZE */

/* for FD_SET() */
#ifndef FD_SETSIZE
# define FD_SETSIZE	256
#endif /* ! FD_SETSIZE */

/*
**  Size of prescan buffer.
**	Despite comments in the _sendmail_ book, this probably should
**	not be changed; there are some hard-to-define dependencies.
*/

# define PSBUFSIZE	(MAXNAME + MAXATOM)	/* size of prescan buffer */

/* fork routine -- set above using #ifdef _osname_ or in Makefile */
# ifndef FORK
#  define FORK		fork		/* function to call to fork mailer */
# endif /* ! FORK */

/* setting h_errno */
# ifndef SM_SET_H_ERRNO
#  define SM_SET_H_ERRNO(err)	h_errno = (err)
# endif /* SM_SET_H_ERRNO */

# ifndef SM_CONF_GETOPT
#  define SM_CONF_GETOPT	1
# endif /* ! SM_CONF_GETOPT */

/* random routine -- set above using #ifdef _osname_ or in Makefile */
# if HASRANDOM
#  define get_random()	random()
# else /* HASRANDOM */
#  define get_random()	((long) rand())
#  ifndef RANDOMSHIFT
#   define RANDOMSHIFT	8
#  endif /* ! RANDOMSHIFT */
# endif /* HASRANDOM */

/*
**  Default to using scanf in readcf.
*/

# ifndef SCANF
#  define SCANF		1
# endif /* ! SCANF */

/* XXX  32 bit type */
# ifndef SM_INT32
#  define SM_INT32	int32_t
# endif /* ! SM_INT32 */

/*
**  SVr4 and similar systems use different routines for setjmp/longjmp
**  with signal support
*/

# if USE_SIGLONGJMP
#  ifdef jmp_buf
#   undef jmp_buf
#  endif /* jmp_buf */
#  define jmp_buf		sigjmp_buf
#  ifdef setjmp
#   undef setjmp
#  endif /* setjmp */
#  define setjmp(env)		sigsetjmp(env, 1)
#  ifdef longjmp
#   undef longjmp
#  endif /* longjmp */
#  define longjmp(env, val)	siglongjmp(env, val)
# endif /* USE_SIGLONGJMP */

# if !defined(NGROUPS_MAX) && defined(NGROUPS)
#  define NGROUPS_MAX	NGROUPS		/* POSIX naming convention */
# endif /* !defined(NGROUPS_MAX) && defined(NGROUPS) */

/*
**  Some snprintf() implementations are rumored not to NUL terminate.
*/
# if SNPRINTF_IS_BROKEN
#  ifdef snprintf
#   undef snprintf
#  endif /* snprintf */
#  define snprintf	sm_snprintf
#  ifdef vsnprintf
#   undef vsnprintf
#  endif /* vsnprintf */
#  define vsnprintf	sm_vsnprintf
# endif /* SNPRINTF_IS_BROKEN */

/*
**  If we don't have a system syslog, simulate it.
*/

# if !LOG
#  define LOG_EMERG	0	/* system is unusable */
#  define LOG_ALERT	1	/* action must be taken immediately */
#  define LOG_CRIT	2	/* critical conditions */
#  define LOG_ERR	3	/* error conditions */
#  define LOG_WARNING	4	/* warning conditions */
#  define LOG_NOTICE	5	/* normal but significant condition */
#  define LOG_INFO	6	/* informational */
#  define LOG_DEBUG	7	/* debug-level messages */
# endif /* !LOG */

# ifndef SM_CONF_SYSLOG
#  define SM_CONF_SYSLOG 1	/* syslog.h has prototype for syslog() */
# endif /* SM_CONF_SYSLOG */

# if !SM_CONF_SYSLOG
#   ifdef __STDC__
extern void	syslog(int, const char *, ...);
#   else /* __STDC__ */
extern void	syslog();
#   endif /* __STDC__ */
# endif /* !SM_CONF_SYSLOG */

/* portable(?) definition for alignment */
# ifndef SM_ALIGN_SIZE
struct sm_align
{
	char al_c;
	union
	{
		long	al_l;
		void	*al_p;
		double	al_d;
		void	(*al_f) __P((void));
	} al_u;
};
#  define SM_ALIGN_SIZE offsetof(struct sm_align, al_u)
# endif /* ! SM_ALIGN_SIZE */
# define SM_ALIGN_BITS (SM_ALIGN_SIZE - 1)

#endif /* ! SM_CONF_H */