conf.h

早期freebsd实现

#ifdef UNICOS
# define SYSTEM5	1	/* include all the System V defines */
# define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
# define MAXPATHLEN	PATHSIZE
# define LA_TYPE	LA_ZERO
# define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
#endif


/*
**  Apollo DomainOS
**
**  From Todd Martin <[e-mail]> & Don Lewis <[e-mail]>
**
**  15 Jan 1994
**
*/

#ifdef apollo
# define HASSETREUID	1	/* has setreuid(2) call */
# define HASINITGROUPS	1	/* has initgroups(2) call */
# undef  SETPROCTITLE
# define LA_TYPE	LA_SUBR		/* use getloadavg.c */
# define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
# ifndef _PATH_SENDMAILCF
#  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
# endif
# ifndef _PATH_SENDMAILPID
#  define _PATH_SENDMAILPID	"/etc/sendmail.pid"
# endif
# 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
#endif


/*
**  UnixWare
**
**	From Evan Champion <[e-mail]>.
*/

#ifdef UNIXWARE
# define SYSTEM5		1
# ifndef HASGETUSERSHELL
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
# endif
# define GIDSET_T		int
# define SLEEP_T		int
# define SFS_TYPE		SFS_STATVFS
# define LA_TYPE		LA_ZERO
# undef WIFEXITED
# undef WEXITSTATUS
# define _PATH_UNIX		"/unix"
# ifndef _PATH_SENDMAILCF
#  define _PATH_SENDMAILCF	"/usr/ucblib/sendmail.cf"
# endif
# ifndef _PATH_SENDMAILPID
#  define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
# endif
# define SYSLOG_BUFSIZE	128
#endif


/*
**  Intergraph CLIX 3.1
**
**	From Paul Southworth <[e-mail]>
*/

#ifdef CLIX
# define SYSTEM5	1	/* looks like System V */
# ifndef HASGETUSERSHELL
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
# endif
# 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


/*
**  NCR 3000 Series (SysVr4)
**
**	From From: Kevin Darcy <[e-mail]>.
*/

#ifdef NCR3000
# define __svr4__
# undef BSD
# define LA_AVENRUN	"avenrun"
#endif
 




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

/**********************************************************************
**  More general defines
**********************************************************************/

/* general BSD defines */
#ifdef BSD
# define HASGETDTABLESIZE 1	/* has getdtablesize(2) call */
# define HASSETREUID	1	/* has setreuid(2) call */
# define HASINITGROUPS	1	/* has initgroups(2) call */
# ifndef HASFLOCK
#  define HASFLOCK	1	/* has flock(2) call */
# endif
#endif

/* general System V Release 4 defines */
#ifdef __svr4__
# define SYSTEM5	1
# define HASSETREUID	1	/* has seteuid(2) call & working saved uids */
# ifndef HASGETUSERSHELL
#  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
# endif
# define setreuid(r, e)	seteuid(e)

# ifndef _PATH_UNIX
#  define _PATH_UNIX		"/unix"
# endif
# ifndef _PATH_SENDMAILCF
#  define _PATH_SENDMAILCF	"/usr/ucblib/sendmail.cf"
# endif
# ifndef _PATH_SENDMAILPID
#  define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
# endif
# ifndef SYSLOG_BUFSIZE
#  define SYSLOG_BUFSIZE	128
# endif
#endif

/* 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 LA_TYPE
#  define LA_TYPE	LA_INT		/* assume integer load average */
# endif
# ifndef SFS_TYPE
#  define SFS_TYPE	SFS_USTAT	/* use System V ustat(2) syscall */
# endif
# define bcopy(s, d, l)		(memmove((d), (s), (l)))
# define bzero(d, l)		(memset((d), '\0', (l)))
# define bcmp(s, d, l)		(memcmp((s), (d), (l)))
#endif

/* general POSIX defines */
#ifdef _POSIX_VERSION
# define HASSETSID	1	/* has Posix setsid(2) call */
# define HASWAITPID	1	/* has Posix waitpid(2) call */
#endif

/*
**  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

/*
**  Tweaking for systems that (for example) claim to be BSD but
**  don't have all the standard BSD routines (boo hiss).
*/

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


/*
**  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 _NET_PROHIB.  If
**  not explicitly set to zero above, default it on.
*/

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

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

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

#ifndef OLD_NEWDB
# define OLD_NEWDB	0	/* assume newer version of newdb */
#endif


/**********************************************************************
**  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
#if !defined(S_ISLNK) && defined(S_IFLNK)
# define S_ISLNK(foo)	((foo & S_IFMT) == S_IFLNK)
#endif
#ifndef S_IWGRP
#define S_IWGRP		020
#endif
#ifndef S_IWOTH
#define S_IWOTH		002
#endif

/*
**  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

/* pseudo-code used in server SMTP */
# define EX_QUIT	22	/* drop out of server immediately */


/*
**  These are used in a few cases where we need some special
**  error codes, but where the system doesn't provide something
**  reasonable.  They are printed in errstring.
*/

#ifndef E_PSEUDOBASE
# define E_PSEUDOBASE	256
#endif

#define EOPENTIMEOUT	(E_PSEUDOBASE + 0)	/* timeout on open */
#define E_DNSBASE	(E_PSEUDOBASE + 20)	/* base for DNS h_errno */

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

#ifndef __P
# include "cdefs.h"
#endif

/*
**  Do some required dependencies
*/

#if defined(NETINET) || defined(NETISO)
# define SMTP		1	/* enable user and server SMTP */
# define QUEUE		1	/* enable queueing */
# define DAEMON		1	/* include the daemon (requires IPC & SMTP) */
#endif


/*
**  Arrange to use either varargs or stdargs
*/

# ifdef __STDC__

# include <stdarg.h>

# define VA_LOCAL_DECL	va_list ap;
# define VA_START(f)	va_start(ap, f)
# define VA_END		va_end(ap)

# else

# include <varargs.h>

# define VA_LOCAL_DECL	va_list ap;
# define VA_START(f)	va_start(ap)
# define VA_END		va_end(ap)

# endif

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

#if !defined(MAXHOSTNAMELEN) && !defined(_SCO_unix_)
# define MAXHOSTNAMELEN	256
#endif

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

#ifndef STDIN_FILENO
#define STDIN_FILENO	0
#endif

#ifndef STDOUT_FILENO
#define STDOUT_FILENO	1
#endif

#ifndef STDERR_FILENO
#define STDERR_FILENO	2
#endif

#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

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

#ifndef WEXITSTATUS
# define WEXITSTATUS(st)	(((st) >> 8) & 0377)
#endif
#ifndef WIFEXITED
# define WIFEXITED(st)		(((st) & 0377) == 0)
#endif

#ifndef SIGFUNC_DEFINED
typedef void		(*sigfunc_t) __P((int));
#endif

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

/*
**  Size of tobuf (deliver.c)
**	Tweak this to match your syslog implementation.  It will have to
**	allow for the extra information printed.
*/

#ifndef TOBUFSIZE
# if (SYSLOG_BUFSIZE) > 512
#  define TOBUFSIZE	(SYSLOG_BUFSIZE - 256)
# else
#  define TOBUFSIZE	256
# endif
#endif

/*
**  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		vfork		/* function to call to fork mailer */
# endif

/*
**  If we are going to link scanf anyway, use it in readcf
*/

#if !defined(HASUNAME) && !defined(SCANF)
# define SCANF		1
#endif