xref: /original-bsd/usr.sbin/sendmail/src/conf.h (revision 0997b878)
1 /*
2  * Copyright (c) 1983 Eric P. Allman
3  * Copyright (c) 1988, 1993
4  *	The Regents of the University of California.  All rights reserved.
5  *
6  * %sccs.include.redist.c%
7  *
8  *	@(#)conf.h	8.131 (Berkeley) 02/06/95
9  */
10 
11 /*
12 **  CONF.H -- All user-configurable parameters for sendmail
13 */
14 
15 # include <sys/param.h>
16 # include <sys/types.h>
17 # include <sys/stat.h>
18 # include <sys/file.h>
19 # include <sys/wait.h>
20 # include <fcntl.h>
21 # include <signal.h>
22 
23 /**********************************************************************
24 **  Table sizes, etc....
25 **	There shouldn't be much need to change these....
26 **********************************************************************/
27 
28 # define MAXLINE	2048		/* max line length */
29 # define MAXNAME	256		/* max length of a name */
30 # define MAXPV		40		/* max # of parms to mailers */
31 # define MAXATOM	200		/* max atoms per address */
32 # define MAXMAILERS	25		/* maximum mailers known to system */
33 # define MAXRWSETS	100		/* max # of sets of rewriting rules */
34 # define MAXPRIORITIES	25		/* max values for Precedence: field */
35 # define MAXMXHOSTS	20		/* max # of MX records */
36 # define SMTPLINELIM	990		/* maximum SMTP line length */
37 # define MAXKEY		128		/* maximum size of a database key */
38 # define MEMCHUNKSIZE	1024		/* chunk size for memory allocation */
39 # define MAXUSERENVIRON	100		/* max envars saved, must be >= 3 */
40 # define MAXALIASDB	12		/* max # of alias databases */
41 # define MAXMAPSTACK	12		/* max # of stacked or sequenced maps */
42 # define MAXTOCLASS	8		/* max # of message timeout classes */
43 
44 # ifndef QUEUESIZE
45 # define QUEUESIZE	1000		/* max # of jobs per queue run */
46 # endif
47 
48 /**********************************************************************
49 **  Compilation options.
50 **
51 **	#define these if they are available; comment them out otherwise.
52 **********************************************************************/
53 
54 # define LOG		1	/* enable logging */
55 # define UGLYUUCP	1	/* output ugly UUCP From lines */
56 # define NETUNIX	1	/* include unix domain support */
57 # define NETINET	1	/* include internet support */
58 # define MATCHGECOS	1	/* match user names from gecos field */
59 # define XDEBUG		1	/* enable extended debugging */
60 # ifdef NEWDB
61 # define USERDB		1	/* look in user database (requires NEWDB) */
62 # endif
63 
64 /**********************************************************************
65 **  0/1 Compilation options.
66 **	#define these to 1 if they are available;
67 **	#define them to 0 otherwise.
68 **********************************************************************/
69 
70 # ifndef NAMED_BIND
71 #  define NAMED_BIND	1	/* use Berkeley Internet Domain Server */
72 # endif
73 
74 /*
75 **  Most systems have symbolic links today, so default them on.  You
76 **  can turn them off by #undef'ing this below.
77 */
78 
79 # define HASLSTAT	1	/* has lstat(2) call */
80 
81 /*
82 **  General "standard C" defines.
83 **
84 **	These may be undone later, to cope with systems that claim to
85 **	be Standard C but aren't.  Gcc is the biggest offender -- it
86 **	doesn't realize that the library is part of the language.
87 **
88 **	Life would be much easier if we could get rid of this sort
89 **	of bozo problems.
90 */
91 
92 #ifdef __STDC__
93 # define HASSETVBUF	1	/* we have setvbuf(3) in libc */
94 #endif
95 
96 /**********************************************************************
97 **  Operating system configuration.
98 **
99 **	Unless you are porting to a new OS, you shouldn't have to
100 **	change these.
101 **********************************************************************/
102 
103 /*
104 **  Per-Operating System defines
105 */
106 
107 
108 /*
109 **  HP-UX -- tested for 8.07, 9.00, and 9.01.
110 */
111 
112 #ifdef __hpux
113 /* avoid m_flags conflict between db.h & sys/sysmacros.h on HP 300 */
114 # undef m_flags
115 # define SYSTEM5	1	/* include all the System V defines */
116 # define HASINITGROUPS	1	/* has initgroups(3) call */
117 # define HASSETREUID	1	/* has setreuid(2) call */
118 # define setreuid(r, e)		setresuid(r, e, -1)
119 # define LA_TYPE	LA_FLOAT
120 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
121 # define GIDSET_T	gid_t
122 # define _PATH_UNIX	"/hp-ux"
123 # ifndef _PATH_SENDMAILCF
124 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
125 # endif
126 # ifndef IDENTPROTO
127 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
128 # endif
129 # ifndef HASGETUSERSHELL
130 #  define HASGETUSERSHELL 0	/* getusershell(3) causes core dumps */
131 # endif
132 # define syslog		hard_syslog
133 # ifdef __STDC__
134 extern int	syslog(int, char *, ...);
135 # endif
136 #endif
137 
138 
139 /*
140 **  IBM AIX 3.x -- actually tested for 3.2.3
141 */
142 
143 #ifdef _AIX3
144 # define HASINITGROUPS	1	/* has initgroups(3) call */
145 # define HASUNAME	1	/* use System V uname(2) system call */
146 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
147 # define FORK		fork	/* no vfork primitive available */
148 # define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
149 # define SPT_PADCHAR	'\0'	/* pad process title with nulls */
150 # define LA_TYPE	LA_INT
151 #endif
152 
153 
154 /*
155 **  Silicon Graphics IRIX
156 **
157 **	Compiles on 4.0.1.
158 **
159 **	Use IRIX64 instead of IRIX for 64-bit IRIX.
160 **
161 **	IRIX64 changes from Mark R. Levinson <ml@cvdev.rochester.edu>.
162 */
163 
164 #ifdef IRIX64
165 # define IRIX
166 #endif
167 
168 #ifdef IRIX
169 # define SYSTEM5	1	/* this is a System-V derived system */
170 # define HASSETREUID	1	/* has setreuid(2) call */
171 # define HASINITGROUPS	1	/* has initgroups(3) call */
172 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
173 # define FORK		fork	/* no vfork primitive available */
174 # ifndef IRIX64			/* IRIX 6.0 */
175 #  define WAITUNION	1	/* use "union wait" as wait argument type */
176 # endif
177 # define setpgid	BSDsetpgrp
178 # define GIDSET_T	gid_t
179 # define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
180 # define LA_TYPE	LA_INT
181 # ifdef IRIX64
182 #  define NAMELISTMASK	0x7fffffffffffffff	/* mask for nlist() values */
183 # else
184 #  define NAMELISTMASK	0x7fffffff		/* mask for nlist() values */
185 # endif
186 #endif
187 
188 
189 /*
190 **  SunOS and Solaris
191 **
192 **	Tested on SunOS 4.1.x (a.k.a. Solaris 1.1.x) and
193 **	Solaris 2.2 (a.k.a. SunOS 5.2).
194 */
195 
196 #if defined(sun) && !defined(BSD)
197 
198 # define HASINITGROUPS	1	/* has initgroups(3) call */
199 # define HASUNAME	1	/* use System V uname(2) system call */
200 # define HASGETUSERSHELL 1	/* DOES have getusershell(3) call in libc */
201 # define LA_TYPE	LA_INT
202 
203 # ifdef SOLARIS_2_3
204 #  define SOLARIS
205 # endif
206 
207 # ifdef SOLARIS
208 			/* Solaris 2.x (a.k.a. SunOS 5.x) */
209 #  ifndef __svr4__
210 #   define __svr4__		/* use all System V Releae 4 defines below */
211 #  endif
212 #  include <sys/time.h>
213 #  define gethostbyname	solaris_gethostbyname	/* get working version */
214 #  define gethostbyaddr	solaris_gethostbyaddr	/* get working version */
215 #  define GIDSET_T	gid_t
216 #  ifndef _PATH_UNIX
217 #   define _PATH_UNIX	"/dev/ksyms"
218 #  endif
219 #  ifndef _PATH_SENDMAILCF
220 #   define _PATH_SENDMAILCF	"/etc/mail/sendmail.cf"
221 #  endif
222 #  ifndef _PATH_SENDMAILPID
223 #   define _PATH_SENDMAILPID	"/etc/mail/sendmail.pid"
224 #  endif
225 #  ifndef SYSLOG_BUFSIZE
226 #   define SYSLOG_BUFSIZE	1024	/* allow full size syslog buffer */
227 #  endif
228 
229 # else
230 			/* SunOS 4.0.3 or 4.1.x */
231 #  define HASSETREUID	1	/* has setreuid(2) call */
232 #  ifndef HASFLOCK
233 #   define HASFLOCK	1	/* has flock(2) call */
234 #  endif
235 #  define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
236 #  include <vfork.h>
237 
238 #  ifdef SUNOS403
239 			/* special tweaking for SunOS 4.0.3 */
240 #   include <malloc.h>
241 #   define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
242 #   define WAITUNION	1	/* use "union wait" as wait argument type */
243 #   undef WIFEXITED
244 #   undef WEXITSTATUS
245 #   undef HASUNAME
246 #   define setpgid	setpgrp
247 typedef int		pid_t;
248 extern char		*getenv();
249 
250 #  else
251 			/* 4.1.x specifics */
252 #   define HASSETSID	1	/* has Posix setsid(2) call */
253 #   define HASSETVBUF	1	/* we have setvbuf(3) in libc */
254 
255 #  endif
256 # endif
257 #endif
258 
259 /*
260 **  DG/UX
261 **
262 **	Tested on 5.4.2 and 5.4.3.  Use DGUX_5_4_2 to get the
263 **	older support.
264 **	5.4.3 changes from Mark T. Robinson <mtr@ornl.gov>.
265 */
266 
267 #ifdef DGUX_5_4_2
268 # define DGUX		1
269 #endif
270 
271 #ifdef	DGUX
272 # define SYSTEM5	1
273 # define LA_TYPE	LA_SUBR
274 # define HASSETREUID	1	/* has setreuid(2) call */
275 # define HASUNAME	1	/* use System V uname(2) system call */
276 # define HASSETSID	1	/* has Posix setsid(2) call */
277 # define HASINITGROUPS	1	/* has initgroups(3) call */
278 # define HASGETUSERSHELL 0	/* does not have getusershell(3) */
279 # ifndef IDENTPROTO
280 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
281 # endif
282 # define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
283 # define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
284 
285 /* these include files must be included early on DG/UX */
286 # include <netinet/in.h>
287 # include <arpa/inet.h>
288 
289 # ifdef DGUX_5_4_2
290 #  define inet_addr	dgux_inet_addr
291 extern long	dgux_inet_addr();
292 # endif
293 #endif
294 
295 
296 /*
297 **  Digital Ultrix 4.2A or 4.3
298 **
299 **	Apparently, fcntl locking is broken on 4.2A, in that locks are
300 **	not dropped when the process exits.  This causes major problems,
301 **	so flock is the only alternative.
302 */
303 
304 #ifdef ultrix
305 # define HASSETREUID	1	/* has setreuid(2) call */
306 # define HASUNSETENV	1	/* has unsetenv(3) call */
307 # define HASINITGROUPS	1	/* has initgroups(3) call */
308 # define HASUNAME	1	/* use System V uname(2) system call */
309 # ifndef HASFLOCK
310 #  define HASFLOCK	1	/* has flock(2) call */
311 # endif
312 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
313 # define BROKEN_RES_SEARCH 1	/* res_search(unknown) returns h_errno=0 */
314 # ifdef vax
315 #  define LA_TYPE	LA_FLOAT
316 # else
317 #  define LA_TYPE	LA_INT
318 #  define LA_AVENRUN	"avenrun"
319 # endif
320 # define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
321 # ifndef IDENTPROTO
322 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
323 # endif
324 #endif
325 
326 
327 /*
328 **  OSF/1 for Intel Paragon.
329 **
330 **	Contributed by Jeff A. Earickson <jeff@ssd.intel.com>
331 **	of Intel Scalable Systems Divison.
332 */
333 
334 #ifdef __PARAGON__
335 # define __osf__	1	/* get OSF/1 defines below */
336 # ifndef _PATH_SENDMAILCF
337 #  define _PATH_SENDMAILCF	"/var/adm/sendmail/sendmail.cf"
338 # endif
339 #endif
340 
341 
342 /*
343 **  OSF/1 (tested on Alpha)
344 */
345 
346 #ifdef __osf__
347 # define HASUNSETENV	1	/* has unsetenv(3) call */
348 # define HASSETREUID	1	/* has setreuid(2) call */
349 # define HASINITGROUPS	1	/* has initgroups(3) call */
350 # ifndef HASFLOCK
351 #  define HASFLOCK	1	/* has flock(2) call */
352 # endif
353 # define LA_TYPE	LA_INT
354 # define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
355 # ifndef _PATH_SENDMAILPID
356 #  define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
357 # endif
358 #endif
359 
360 
361 /*
362 **  NeXTstep
363 */
364 
365 #ifdef NeXT
366 # define HASINITGROUPS	1	/* has initgroups(3) call */
367 # ifndef HASFLOCK
368 #  define HASFLOCK	1	/* has flock(2) call */
369 # endif
370 # define NEEDGETOPT	1	/* need a replacement for getopt(3) */
371 # define WAITUNION	1	/* use "union wait" as wait argument type */
372 # define sleep		sleepX
373 # define setpgid	setpgrp
374 # ifndef LA_TYPE
375 #  define LA_TYPE	LA_MACH
376 # endif
377 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
378 # ifndef _POSIX_SOURCE
379 typedef int		pid_t;
380 #  undef WEXITSTATUS
381 #  undef WIFEXITED
382 # endif
383 # ifndef _PATH_SENDMAILCF
384 #  define _PATH_SENDMAILCF	"/etc/sendmail/sendmail.cf"
385 # endif
386 # ifndef _PATH_SENDMAILPID
387 #  define _PATH_SENDMAILPID	"/etc/sendmail/sendmail.pid"
388 # endif
389 #endif
390 
391 
392 /*
393 **  4.4 BSD
394 **
395 **	See also BSD defines.
396 */
397 
398 #ifdef BSD4_4
399 # define HASUNSETENV	1	/* has unsetenv(3) call */
400 # include <sys/cdefs.h>
401 # define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
402 # ifndef LA_TYPE
403 #  define LA_TYPE	LA_SUBR
404 # endif
405 # define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
406 # define SPT_TYPE	SPT_PSSTRINGS	/* use PS_STRINGS pointer */
407 #endif
408 
409 
410 /*
411 **  BSD/386 (all versions)
412 **	From Tony Sanders, BSDI
413 */
414 
415 #ifdef __bsdi__
416 # define HASUNSETENV	1	/* has the unsetenv(3) call */
417 # define HASSETSID	1	/* has the setsid(2) POSIX syscall */
418 # include <sys/cdefs.h>
419 # define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
420 # define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
421 # ifndef LA_TYPE
422 #  define LA_TYPE	LA_SUBR
423 # endif
424 # if defined(_BSDI_VERSION) && _BSDI_VERSION >= 199312
425 			/* version 1.1 or later */
426 #  undef SPT_TYPE
427 #  define SPT_TYPE	SPT_BUILTIN	/* setproctitle is in libc */
428 # else
429 			/* version 1.0 or earlier */
430 #  ifndef OLD_NEWDB
431 #   define OLD_NEWDB	1	/* old version of newdb library */
432 #  endif
433 #  define SPT_PADCHAR	'\0'	/* pad process title with nulls */
434 # endif
435 #endif
436 
437 
438 
439 /*
440 **  386BSD / FreeBSD 1.0E / NetBSD (all architectures, all versions)
441 **
442 **  4.3BSD clone, closer to 4.4BSD
443 **
444 **	See also BSD defines.
445 */
446 
447 #if defined(__386BSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
448 # define HASUNSETENV	1	/* has unsetenv(3) call */
449 # define HASSETSID	1	/* has the setsid(2) POSIX syscall */
450 # ifdef __NetBSD__
451 #  define HASUNAME	1	/* has uname(2) syscall */
452 # endif
453 # include <sys/cdefs.h>
454 # define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
455 # ifndef LA_TYPE
456 #  define LA_TYPE	LA_SUBR
457 # endif
458 # define SFS_TYPE	SFS_MOUNT	/* use <sys/mount.h> statfs() impl */
459 #endif
460 
461 
462 /*
463 **  Mach386
464 **
465 **	For mt Xinu's Mach386 system.
466 */
467 
468 #if defined(MACH) && defined(i386)
469 # define MACH386	1
470 # define HASUNSETENV	1	/* has unsetenv(3) call */
471 # define HASINITGROUPS	1	/* has initgroups(3) call */
472 # ifndef HASFLOCK
473 #  define HASFLOCK	1	/* has flock(2) call */
474 # endif
475 # define NEEDGETOPT	1	/* need a replacement for getopt(3) */
476 # define NEEDSTRTOL	1	/* need the strtol() function */
477 # define setpgid	setpgrp
478 # ifndef LA_TYPE
479 #  define LA_TYPE	LA_FLOAT
480 # endif
481 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
482 # undef HASSETVBUF		/* don't actually have setvbuf(3) */
483 # undef WEXITSTATUS
484 # undef WIFEXITED
485 # ifndef _PATH_SENDMAILCF
486 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
487 # endif
488 # ifndef _PATH_SENDMAILPID
489 #  define _PATH_SENDMAILPID	"/etc/sendmail.pid"
490 # endif
491 #endif
492 
493 
494 /*
495 **  4.3 BSD -- this is for very old systems
496 **
497 **	Should work for mt Xinu MORE/BSD and Mips UMIPS-BSD 2.1.
498 **
499 **	You'll also have to install a new resolver library.
500 **	I don't guarantee that support for this environment is complete.
501 */
502 
503 #if defined(oldBSD43) || defined(MORE_BSD) || defined(umipsbsd)
504 # define NEEDVPRINTF	1	/* need a replacement for vprintf(3) */
505 # define NEEDGETOPT	1	/* need a replacement for getopt(3) */
506 # define ARBPTR_T	char *
507 # define setpgid	setpgrp
508 # ifndef LA_TYPE
509 #  define LA_TYPE	LA_FLOAT
510 # endif
511 # ifndef _PATH_SENDMAILCF
512 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
513 # endif
514 # ifndef IDENTPROTO
515 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
516 # endif
517 # undef WEXITSTATUS
518 # undef WIFEXITED
519 typedef short		pid_t;
520 extern int		errno;
521 #endif
522 
523 
524 /*
525 **  SCO Unix
526 **
527 **	This includes two parts -- the first is for SCO Open Server 3.2v4
528 **	(contributed by Philippe Brand <phb@colombo.telesys-innov.fr>).
529 **	The second is, I believe, for an older version.
530 */
531 
532 #ifdef _SCO_unix_4_2
533 # define _SCO_unix_
534 # define HASSETREUID	1	/* has setreuid(2) call */
535 # define NEEDFSYNC	1	/* needs the fsync(2) call stub */
536 # define _PATH_UNIX	"/unix"
537 # ifndef _PATH_SENDMAILCF
538 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
539 # endif
540 # ifndef _PATH_SENDMAILPID
541 #  define _PATH_SENDMAILPID	"/etc/sendmail.pid"
542 # endif
543 #endif
544 
545 #ifdef _SCO_unix_
546 # define SYSTEM5	1	/* include all the System V defines */
547 # define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
548 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
549 # define FORK		fork
550 # define MAXPATHLEN	PATHSIZE
551 # define LA_TYPE	LA_SHORT
552 # define SFS_TYPE	SFS_4ARGS	/* use <sys/statfs.h> 4-arg impl */
553 # define TZ_TYPE	TZ_TM_NAME	/* use tm->tm_name */
554 # undef NETUNIX			/* no unix domain socket support */
555 #endif
556 
557 
558 /*
559 **  Altos System V.
560 **	Contributed by Tim Rice <timr@crl.com>.
561 */
562 
563 #ifdef ALTOS_SYS_V
564 # include <limits.h>
565 # define SYSTEM5	1	/* include all the System V defines */
566 # define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
567 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
568 # define WAITUNION	1	/* use "union wait" as wait argument type */
569 # define NEEDFSYNC	1	/* no fsync(2) in system library */
570 # define FORK		fork
571 # define MAXPATHLEN	PATHSIZE
572 # define LA_TYPE	LA_SHORT
573 # define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
574 # define TZ_TYPE	TZ_TM_NAME	/* use tm->tm_name */
575 # undef NETUNIX			/* no unix domain socket support */
576 # undef WIFEXITED
577 # undef WEXITSTATUS
578 # define strtoul	strtol	/* gcc library bogosity */
579 
580 typedef unsigned short	uid_t;
581 typedef unsigned short	gid_t;
582 typedef short		pid_t;
583 #endif
584 
585 
586 /*
587 **  ConvexOS 11.0 and later
588 **
589 **	"Todd C. Miller" <millert@mroe.cs.colorado.edu> claims this
590 **	works on 9.1 as well.
591 */
592 
593 #ifdef _CONVEX_SOURCE
594 # define BSD		1	/* include all the BSD defines */
595 # define HASUNAME	1	/* use System V uname(2) system call */
596 # define HASSETSID	1	/* has POSIX setsid(2) call */
597 # define NEEDGETOPT	1	/* need replacement for getopt(3) */
598 # define LA_TYPE	LA_FLOAT
599 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
600 # ifndef _PATH_SENDMAILCF
601 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
602 # endif
603 # ifndef S_IREAD
604 #  define S_IREAD	_S_IREAD
605 #  define S_IWRITE	_S_IWRITE
606 #  define S_IEXEC	_S_IEXEC
607 #  define S_IFMT	_S_IFMT
608 #  define S_IFCHR	_S_IFCHR
609 #  define S_IFBLK	_S_IFBLK
610 # endif
611 # ifndef IDENTPROTO
612 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
613 # endif
614 #endif
615 
616 
617 /*
618 **  RISC/os 4.52
619 **
620 **	Gives a ton of warning messages, but otherwise compiles.
621 */
622 
623 #ifdef RISCOS
624 
625 # define HASUNSETENV	1	/* has unsetenv(3) call */
626 # ifndef HASFLOCK
627 #  define HASFLOCK	1	/* has flock(2) call */
628 # endif
629 # define WAITUNION	1	/* use "union wait" as wait argument type */
630 # define NEEDGETOPT	1	/* need a replacement for getopt(3) */
631 # define LA_TYPE	LA_INT
632 # define LA_AVENRUN	"avenrun"
633 # define _PATH_UNIX	"/unix"
634 # undef WIFEXITED
635 
636 # define setpgid	setpgrp
637 
638 extern int		errno;
639 typedef int		pid_t;
640 #define			SIGFUNC_DEFINED
641 typedef int		(*sigfunc_t)();
642 extern char		*getenv();
643 extern void		*malloc();
644 
645 #endif
646 
647 
648 /*
649 **  Linux 0.99pl10 and above...
650 **
651 **  Thanks to, in reverse order of contact:
652 **
653 **	John Kennedy <warlock@csuchico.edu>
654 **	Andrew Pam <avatar@aus.xanadu.com>
655 **	Florian La Roche <rzsfl@rz.uni-sb.de>
656 **	Karl London <karl@borg.demon.co.uk>
657 **
658 **  Last compiled against:	[12/14/94 @ 11:38:41 PM (Wednesday)]
659 **	sendmail 8.7.a.5	named 4.9.3-beta12-p1	db-1.85
660 **	gcc 2.6.2		libc.so.4.6.20
661 **	slackware 2.1.0		linux 1.1.70
662 */
663 
664 #ifdef __linux__
665 # define BSD		1	/* include BSD defines */
666 # define NEEDGETOPT	1	/* need a replacement for getopt(3) */
667 # define HASUNAME	1	/* use System V uname(2) system call */
668 # define HASUNSETENV	1	/* has unsetenv(3) call */
669 # define ERRLIST_PREDEFINED	/* don't declare sys_errlist */
670 # define GIDSET_T	gid_t	/* from <linux/types.h> */
671 # define HASGETUSERSHELL 0	/* getusershell(3) broken in Slackware 2.0 */
672 # ifndef LA_TYPE
673 #  define LA_TYPE	LA_PROCSTR
674 # endif
675 # define SFS_TYPE	SFS_VFS		/* use <sys/vfs.h> statfs() impl */
676 # ifndef _PATH_SENDMAILPID
677 #  define _PATH_SENDMAILPID	"/var/run/sendmail.pid"
678 # endif
679 # define TZ_TYPE	TZ_TNAME
680 # include <sys/sysmacros.h>
681 # undef atol			/* wounded in <stdlib.h> */
682 #endif
683 
684 
685 /*
686 **  DELL SVR4 Issue 2.2, and others
687 **	From Kimmo Suominen <kim@grendel.lut.fi>
688 **
689 **	It's on #ifdef DELL_SVR4 because Solaris also gets __svr4__
690 **	defined, and the definitions conflict.
691 **
692 **	Peter Wemm <peter@perth.DIALix.oz.au> claims that the setreuid
693 **	trick works on DELL 2.2 (SVR4.0/386 version 4.0) and ESIX 4.0.3A
694 **	(SVR4.0/386 version 3.0).
695 */
696 
697 #ifdef DELL_SVR4
698 				/* no changes necessary */
699 				/* see general __svr4__ defines below */
700 #endif
701 
702 
703 /*
704 **  Apple A/UX 3.0
705 */
706 
707 #ifdef _AUX_SOURCE
708 # include <sys/sysmacros.h>
709 # define BSD			/* has BSD routines */
710 # define HASUNAME	1	/* use System V uname(2) system call */
711 # define HASSETVBUF	1	/* we have setvbuf(3) in libc */
712 # define SIGFUNC_DEFINED	/* sigfunc_t already defined */
713 # ifndef IDENTPROTO
714 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
715 # endif
716 # define FORK		fork
717 # ifndef _PATH_SENDMAILCF
718 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
719 # endif
720 # ifndef LA_TYPE
721 #  define LA_TYPE	LA_ZERO
722 # endif
723 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
724 # undef WIFEXITED
725 # undef WEXITSTATUS
726 #endif
727 
728 
729 /*
730 **  Encore UMAX V
731 **
732 **	Not extensively tested.
733 */
734 
735 #ifdef UMAXV
736 # include <limits.h>
737 # define HASUNAME	1	/* use System V uname(2) system call */
738 # define HASSETVBUF	1	/* we have setvbuf(3) in libc */
739 # define HASINITGROUPS	1	/* has initgroups(3) call */
740 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
741 # define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
742 # define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
743 # define FORK		fork	/* no vfork(2) primitive available */
744 # define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
745 # define MAXPATHLEN	PATH_MAX
746 extern struct passwd	*getpwent(), *getpwnam(), *getpwuid();
747 extern struct group	*getgrent(), *getgrnam(), *getgrgid();
748 # undef WIFEXITED
749 # undef WEXITSTATUS
750 #endif
751 
752 
753 /*
754 **  Stardent Titan 3000 running TitanOS 4.2.
755 **
756 **	Must be compiled in "cc -43" mode.
757 **
758 **	From Kate Hedstrom <kate@ahab.rutgers.edu>.
759 **
760 **	Note the tweaking below after the BSD defines are set.
761 */
762 
763 #ifdef titan
764 # define setpgid	setpgrp
765 typedef int		pid_t;
766 # undef WIFEXITED
767 # undef WEXITSTATUS
768 #endif
769 
770 
771 /*
772 **  Sequent DYNIX 3.2.0
773 **
774 **	From Jim Davis <jdavis@cs.arizona.edu>.
775 */
776 
777 #ifdef sequent
778 
779 # define BSD		1
780 # define HASUNSETENV	1
781 # define BSD4_3		1	/* to get signal() in conf.c */
782 # define WAITUNION	1
783 # define LA_TYPE	LA_FLOAT
784 # ifdef	_POSIX_VERSION
785 #  undef _POSIX_VERSION		/* set in <unistd.h> */
786 # endif
787 # undef HASSETVBUF		/* don't actually have setvbuf(3) */
788 # define setpgid	setpgrp
789 
790 /* Have to redefine WIFEXITED to take an int, to work with waitfor() */
791 # undef	WIFEXITED
792 # define WIFEXITED(s)	(((union wait*)&(s))->w_stopval != WSTOPPED && \
793 			 ((union wait*)&(s))->w_termsig == 0)
794 # define WEXITSTATUS(s)	(((union wait*)&(s))->w_retcode)
795 typedef int		pid_t;
796 # define isgraph(c)	(isprint(c) && (c != ' '))
797 
798 # ifndef IDENTPROTO
799 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
800 # endif
801 
802 # ifndef _PATH_UNIX
803 #  define _PATH_UNIX	"/dynix"
804 # endif
805 # ifndef _PATH_SENDMAILCF
806 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
807 # endif
808 
809 #endif
810 
811 
812 /*
813 **  Sequent DYNIX/ptx v2.0 (and higher)
814 **
815 **	For DYNIX/ptx v1.x, undefine HASSETREUID.
816 **
817 **	From Tim Wright <timw@sequent.com>.
818 */
819 
820 #ifdef _SEQUENT_
821 # define SYSTEM5	1	/* include all the System V defines */
822 # define HASSETSID	1	/* has POSIX setsid(2) call */
823 # define HASINITGROUPS	1	/* has initgroups(3) call */
824 # define HASSETREUID	1	/* has setreuid(2) call */
825 # define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
826 # define GIDSET_T	gid_t
827 # define LA_TYPE	LA_INT
828 # define SFS_TYPE	SFS_STATFS	/* use <sys/statfs.h> statfs() impl */
829 # define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
830 # ifndef IDENTPROTO
831 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
832 # endif
833 # ifndef _PATH_SENDMAILCF
834 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
835 # endif
836 # ifndef _PATH_SENDMAILPID
837 #  define _PATH_SENDMAILPID	"/etc/sendmail.pid"
838 # endif
839 #endif
840 
841 
842 /*
843 **  Cray Unicos
844 **
845 **	Ported by David L. Kensiski, Sterling Sofware <kensiski@nas.nasa.gov>
846 */
847 
848 #ifdef UNICOS
849 # define SYSTEM5	1	/* include all the System V defines */
850 # define SYS5SIGNALS	1	/* SysV signal semantics -- reset on each sig */
851 # define MAXPATHLEN	PATHSIZE
852 # define LA_TYPE	LA_ZERO
853 # define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
854 #endif
855 
856 
857 /*
858 **  Apollo DomainOS
859 **
860 **  From Todd Martin <tmartint@tus.ssi1.com> & Don Lewis <gdonl@gv.ssi1.com>
861 **
862 **  15 Jan 1994
863 **
864 */
865 
866 #ifdef apollo
867 # define HASSETREUID	1	/* has setreuid(2) call */
868 # define HASINITGROUPS	1	/* has initgroups(2) call */
869 # define SPT_TYPE	SPT_NONE	/* don't use setproctitle */
870 # define LA_TYPE	LA_SUBR		/* use getloadavg.c */
871 # define SFS_TYPE	SFS_4ARGS	/* four argument statfs() call */
872 # ifndef _PATH_SENDMAILCF
873 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
874 # endif
875 # ifndef _PATH_SENDMAILPID
876 #  define _PATH_SENDMAILPID	"/etc/sendmail.pid"
877 # endif
878 # undef  S_IFSOCK		/* S_IFSOCK and S_IFIFO are the same */
879 # undef  S_IFIFO
880 # define S_IFIFO	0010000
881 # ifndef IDENTPROTO
882 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
883 # endif
884 #endif
885 
886 
887 /*
888 **  UnixWare 1.1.2.
889 **
890 **	From Evan Champion <evanc@spatial.synapse.org>.
891 */
892 
893 #ifdef UNIXWARE
894 # define SYSTEM5		1
895 # define HASGETUSERSHELL	0	/* does not have getusershell(3) call */
896 # define HASGETDTABLESIZE	1
897 # define HASSETREUID		1
898 # define HASSETSID		1
899 # define HASINITGROUPS		1
900 # define GIDSET_T		gid_t
901 # define SLEEP_T		unsigned
902 # define SFS_TYPE		SFS_STATVFS
903 # define LA_TYPE		LA_ZERO
904 # undef WIFEXITED
905 # undef WEXITSTATUS
906 # define _PATH_UNIX		"/unix"
907 # ifndef _PATH_SENDMAILCF
908 #  define _PATH_SENDMAILCF	"/usr/ucblib/sendmail.cf"
909 # endif
910 # ifndef _PATH_SENDMAILPID
911 #  define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
912 # endif
913 # define SYSLOG_BUFSIZE	128
914 #endif
915 
916 
917 /*
918 **  Intergraph CLIX 3.1
919 **
920 **	From Paul Southworth <pauls@locust.cic.net>
921 */
922 
923 #ifdef CLIX
924 # define SYSTEM5	1	/* looks like System V */
925 # ifndef HASGETUSERSHELL
926 #  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
927 # endif
928 # define DEV_BSIZE	512	/* device block size not defined */
929 # define GIDSET_T	gid_t
930 # undef LOG			/* syslog not available */
931 # define NEEDFSYNC	1	/* no fsync in system library */
932 # define GETSHORT	_getshort
933 #endif
934 
935 
936 /*
937 **  NCR 3000 Series (SysVr4)
938 **
939 **	From Kevin Darcy <kevin@tech.mis.cfc.com>.
940 */
941 
942 #ifdef NCR3000
943 # define __svr4__
944 # undef BSD
945 # define LA_AVENRUN	"avenrun"
946 #endif
947 
948 
949 /*
950 **  Tandem NonStop-UX SVR4
951 **
952 **	From Rick McCarty <mccarty@mpd.tandem.com>.
953 */
954 
955 #ifdef NonStop_UX_BXX
956 # define __svr4__
957 #endif
958 
959 
960 /*
961 **  Hitachi 3050R & 3050RX Workstations running HI-UX/WE2.
962 **
963 **	Tested for 1.04 and 1.03
964 **	From Akihiro Hashimoto ("Hash") <hash@dominic.ipc.chiba-u.ac.jp>.
965 */
966 
967 #ifdef __H3050R
968 # define SYSTEM5	1	/* include all the System V defines */
969 # define HASINITGROUPS	1	/* has initgroups(3) call */
970 # define setreuid(r, e)	setresuid(r, e, -1)
971 # define LA_TYPE	LA_FLOAT
972 # define SFS_TYPE	SFS_VFS	/* use <sys/vfs.h> statfs() implementation */
973 # define HASSETVBUF	/* HI-UX has no setlinebuf */
974 # ifndef GIDSET_T
975 #  define GIDSET_T	gid_t
976 # endif
977 # ifndef _PATH_UNIX
978 #  define _PATH_UNIX	"/HI-UX"
979 # endif
980 # ifndef _PATH_SENDMAILCF
981 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
982 # endif
983 # ifndef IDENTPROTO
984 #  define IDENTPROTO	0	/* TCP/IP implementation is broken */
985 # endif
986 # ifndef HASGETUSERSHELL
987 #  define HASGETUSERSHELL 0	/* getusershell(3) causes core dumps */
988 # endif
989 
990 /* avoid m_flags conflict between db.h & sys/sysmacros.h on HIUX 3050 */
991 # undef m_flags
992 
993 # ifdef __STDC__
994 extern int	syslog(int, char *, ...);
995 # endif
996 
997 #endif
998 
999 
1000 /*
1001 **  Amdahl UTS System V 2.1.5 (SVr3-based)
1002 **
1003 **    From: Janet Jackson <janet@dialix.oz.au>.
1004 */
1005 
1006 #ifdef _UTS
1007 # include <sys/sysmacros.h>
1008 # undef HASLSTAT	/* has symlinks, but they cause problems */
1009 # define NEEDFSYNC	1	/* system fsync(2) fails on non-EFS filesys */
1010 # define SYS5SIGNALS	1	/* System V signal semantics */
1011 # define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
1012 # define HASUNAME	1	/* use System V uname(2) system call */
1013 # define HASINITGROUPS	1	/* has initgroups(3) function */
1014 # define HASSETVBUF	1	/* has setvbuf(3) function */
1015 # define HASSIGSETMASK	0	/* does not have sigsetmask(2) function */
1016 # ifndef HASGETUSERSHELL
1017 #  define HASGETUSERSHELL 0	/* does not have getusershell(3) function */
1018 # endif
1019 # define GIDSET_T	gid_t	/* type of 2nd arg to getgroups(2) isn't int */
1020 # define LA_TYPE	LA_ZERO		/* doesn't have load average */
1021 # define SFS_TYPE	SFS_4ARGS	/* use 4-arg statfs() */
1022 # define _PATH_UNIX	"/unix"
1023 # ifndef _PATH_SENDMAILCF
1024 #  define _PATH_SENDMAILCF	"/usr/lib/sendmail.cf"
1025 # endif
1026 #endif
1027 
1028 
1029 
1030 
1031 /**********************************************************************
1032 **  End of Per-Operating System defines
1033 **********************************************************************/
1034 
1035 /**********************************************************************
1036 **  More general defines
1037 **********************************************************************/
1038 
1039 /* general BSD defines */
1040 #ifdef BSD
1041 # define HASGETDTABLESIZE 1	/* has getdtablesize(2) call */
1042 # define HASSETREUID	1	/* has setreuid(2) call */
1043 # define HASINITGROUPS	1	/* has initgroups(3) call */
1044 # ifndef HASSETRLIMIT
1045 #  define HASSETRLIMIT	1	/* has setrlimit(2) call */
1046 # endif
1047 # ifndef HASFLOCK
1048 #  define HASFLOCK	1	/* has flock(2) call */
1049 # endif
1050 # ifndef TZ_TYPE
1051 #  define TZ_TYPE	TZ_TM_ZONE	/* use tm->tm_zone variable */
1052 # endif
1053 #endif
1054 
1055 /* general System V Release 4 defines */
1056 #ifdef __svr4__
1057 # define SYSTEM5	1
1058 # define HASSETREUID	1	/* has seteuid(2) call & working saved uids */
1059 # define HASINITGROUPS	1	/* has initgroups(3) call */
1060 # ifndef HASSETRLIMIT
1061 #  define HASSETRLIMIT	1	/* has setrlimit(2) call */
1062 # endif
1063 # ifndef HASGETUSERSHELL
1064 #  define HASGETUSERSHELL 0	/* does not have getusershell(3) call */
1065 # endif
1066 # define setreuid(r, e)	seteuid(e)
1067 
1068 # ifndef _PATH_UNIX
1069 #  define _PATH_UNIX		"/unix"
1070 # endif
1071 # ifndef _PATH_SENDMAILCF
1072 #  define _PATH_SENDMAILCF	"/usr/ucblib/sendmail.cf"
1073 # endif
1074 # ifndef _PATH_SENDMAILPID
1075 #  define _PATH_SENDMAILPID	"/usr/ucblib/sendmail.pid"
1076 # endif
1077 # ifndef SYSLOG_BUFSIZE
1078 #  define SYSLOG_BUFSIZE	128
1079 # endif
1080 # ifndef SFS_TYPE
1081 #  define SFS_TYPE		SFS_STATVFS
1082 # endif
1083 #endif
1084 
1085 /* general System V defines */
1086 #ifdef SYSTEM5
1087 # include <sys/sysmacros.h>
1088 # define HASUNAME	1	/* use System V uname(2) system call */
1089 # define SYS5SETPGRP	1	/* use System V setpgrp(2) syscall */
1090 # define HASSETVBUF	1	/* we have setvbuf(3) in libc */
1091 # ifndef HASULIMIT
1092 #  define HASULIMIT	1	/* has the ulimit(2) syscall */
1093 # endif
1094 # ifndef LA_TYPE
1095 #  define LA_TYPE	LA_INT		/* assume integer load average */
1096 # endif
1097 # ifndef SFS_TYPE
1098 #  define SFS_TYPE	SFS_USTAT	/* use System V ustat(2) syscall */
1099 # endif
1100 # ifndef TZ_TYPE
1101 #  define TZ_TYPE	TZ_TZNAME	/* use tzname[] vector */
1102 # endif
1103 # ifndef ALTOS_SYS_V
1104 #  define bcopy(s, d, l)	(memmove((d), (s), (l)))
1105 #  define bzero(d, l)		(memset((d), '\0', (l)))
1106 #  define bcmp(s, d, l)		(memcmp((s), (d), (l)))
1107 # endif
1108 #endif
1109 
1110 /* general POSIX defines */
1111 #ifdef _POSIX_VERSION
1112 # define HASSETSID	1	/* has Posix setsid(2) call */
1113 # define HASWAITPID	1	/* has Posix waitpid(2) call */
1114 #endif
1115 
1116 /*
1117 **  If no type for argument two of getgroups call is defined, assume
1118 **  it's an integer -- unfortunately, there seem to be several choices
1119 **  here.
1120 */
1121 
1122 #ifndef GIDSET_T
1123 # define GIDSET_T	int
1124 #endif
1125 
1126 /*
1127 **  Tweaking for systems that (for example) claim to be BSD but
1128 **  don't have all the standard BSD routines (boo hiss).
1129 */
1130 
1131 #ifdef titan
1132 # undef HASINITGROUPS		/* doesn't have initgroups(3) call */
1133 #endif
1134 
1135 
1136 /*
1137 **  Due to a "feature" in some operating systems such as Ultrix 4.3 and
1138 **  HPUX 8.0, if you receive a "No route to host" message (ICMP message
1139 **  ICMP_UNREACH_HOST) on _any_ connection, all connections to that host
1140 **  are closed.  Some firewalls return this error if you try to connect
1141 **  to the IDENT port (113), so you can't receive email from these hosts
1142 **  on these systems.  The firewall really should use a more specific
1143 **  message such as ICMP_UNREACH_PROTOCOL or _PORT or _NET_PROHIB.  If
1144 **  not explicitly set to zero above, default it on.
1145 */
1146 
1147 #ifndef IDENTPROTO
1148 # define IDENTPROTO	1	/* use IDENT proto (RFC 1413) */
1149 #endif
1150 
1151 #ifndef HASGETUSERSHELL
1152 # define HASGETUSERSHELL 1	/* libc has getusershell(3) call */
1153 #endif
1154 
1155 #ifndef HASFLOCK
1156 # define HASFLOCK	0	/* assume no flock(2) support */
1157 #endif
1158 
1159 #ifndef HASSETRLIMIT
1160 # define HASSETRLIMIT	0	/* assume no setrlimit(2) support */
1161 #endif
1162 
1163 #ifndef HASULIMIT
1164 # define HASULIMIT	0	/* assume no ulimit(2) support */
1165 #endif
1166 
1167 #ifndef OLD_NEWDB
1168 # define OLD_NEWDB	0	/* assume newer version of newdb */
1169 #endif
1170 
1171 /* heuristic setting of HASSETSIGMASK; can override above */
1172 #ifndef HASSIGSETMASK
1173 # ifdef SIGVTALRM
1174 #  define HASSETSIGMASK	1
1175 # else
1176 #  define HASSETSIGMASK	0
1177 # endif
1178 #endif
1179 
1180 
1181 /**********************************************************************
1182 **  Remaining definitions should never have to be changed.  They are
1183 **  primarily to provide back compatibility for older systems -- for
1184 **  example, it includes some POSIX compatibility definitions
1185 **********************************************************************/
1186 
1187 /* System 5 compatibility */
1188 #ifndef S_ISREG
1189 # define S_ISREG(foo)	((foo & S_IFMT) == S_IFREG)
1190 #endif
1191 #if !defined(S_ISLNK) && defined(S_IFLNK)
1192 # define S_ISLNK(foo)	((foo & S_IFMT) == S_IFLNK)
1193 #endif
1194 #ifndef S_IWGRP
1195 #define S_IWGRP		020
1196 #endif
1197 #ifndef S_IWOTH
1198 #define S_IWOTH		002
1199 #endif
1200 
1201 /*
1202 **  Older systems don't have this error code -- it should be in
1203 **  /usr/include/sysexits.h.
1204 */
1205 
1206 # ifndef EX_CONFIG
1207 # define EX_CONFIG	78	/* configuration error */
1208 # endif
1209 
1210 /* pseudo-code used in server SMTP */
1211 # define EX_QUIT	22	/* drop out of server immediately */
1212 
1213 
1214 /*
1215 **  These are used in a few cases where we need some special
1216 **  error codes, but where the system doesn't provide something
1217 **  reasonable.  They are printed in errstring.
1218 */
1219 
1220 #ifndef E_PSEUDOBASE
1221 # define E_PSEUDOBASE	256
1222 #endif
1223 
1224 #define EOPENTIMEOUT	(E_PSEUDOBASE + 0)	/* timeout on open */
1225 #define E_DNSBASE	(E_PSEUDOBASE + 20)	/* base for DNS h_errno */
1226 
1227 /* type of arbitrary pointer */
1228 #ifndef ARBPTR_T
1229 # define ARBPTR_T	void *
1230 #endif
1231 
1232 #ifndef __P
1233 # include "cdefs.h"
1234 #endif
1235 
1236 #if NAMED_BIND
1237 # include <arpa/nameser.h>
1238 # ifdef __svr4__
1239 #  ifdef NOERROR
1240 #   undef NOERROR		/* avoid compiler conflict with stream.h */
1241 #  endif
1242 # endif
1243 #endif
1244 
1245 /*
1246 **  The size of an IP address -- can't use sizeof because of problems
1247 **  on Crays, where everything is 64 bits.  This will break if/when
1248 **  IP addresses are expanded to eight bytes.
1249 */
1250 
1251 #ifndef INADDRSZ
1252 # define INADDRSZ	4
1253 #endif
1254 
1255 /*
1256 **  The size of various known types -- for reading network protocols.
1257 **  Again, we can't use sizeof because of compiler randomness.
1258 */
1259 
1260 #ifndef INT16SZ
1261 # define INT16SZ	2
1262 #endif
1263 #ifndef INT32SZ
1264 # define INT32SZ	4
1265 #endif
1266 
1267 /*
1268 **  Do some required dependencies
1269 */
1270 
1271 #if defined(NETINET) || defined(NETISO)
1272 # define SMTP		1	/* enable user and server SMTP */
1273 # define QUEUE		1	/* enable queueing */
1274 # define DAEMON		1	/* include the daemon (requires IPC & SMTP) */
1275 #endif
1276 
1277 
1278 /*
1279 **  Arrange to use either varargs or stdargs
1280 */
1281 
1282 # ifdef __STDC__
1283 
1284 # include <stdarg.h>
1285 
1286 # define VA_LOCAL_DECL	va_list ap;
1287 # define VA_START(f)	va_start(ap, f)
1288 # define VA_END		va_end(ap)
1289 
1290 # else
1291 
1292 # include <varargs.h>
1293 
1294 # define VA_LOCAL_DECL	va_list ap;
1295 # define VA_START(f)	va_start(ap)
1296 # define VA_END		va_end(ap)
1297 
1298 # endif
1299 
1300 #ifdef HASUNAME
1301 # include <sys/utsname.h>
1302 # ifdef newstr
1303 #  undef newstr
1304 # endif
1305 #else /* ! HASUNAME */
1306 # define NODE_LENGTH 32
1307 struct utsname
1308 {
1309 	char nodename[NODE_LENGTH+1];
1310 };
1311 #endif /* HASUNAME */
1312 
1313 #if !defined(MAXHOSTNAMELEN) && !defined(_SCO_unix_) && !defined(NonStop_UX_BXX) && !defined(ALTOS_SYS_V)
1314 # define MAXHOSTNAMELEN	256
1315 #endif
1316 
1317 #if !defined(SIGCHLD) && defined(SIGCLD)
1318 # define SIGCHLD	SIGCLD
1319 #endif
1320 
1321 #ifndef STDIN_FILENO
1322 #define STDIN_FILENO	0
1323 #endif
1324 
1325 #ifndef STDOUT_FILENO
1326 #define STDOUT_FILENO	1
1327 #endif
1328 
1329 #ifndef STDERR_FILENO
1330 #define STDERR_FILENO	2
1331 #endif
1332 
1333 #ifndef LOCK_SH
1334 # define LOCK_SH	0x01	/* shared lock */
1335 # define LOCK_EX	0x02	/* exclusive lock */
1336 # define LOCK_NB	0x04	/* non-blocking lock */
1337 # define LOCK_UN	0x08	/* unlock */
1338 #endif
1339 
1340 #ifndef SIG_ERR
1341 # define SIG_ERR	((void (*)()) -1)
1342 #endif
1343 
1344 #ifndef WEXITSTATUS
1345 # define WEXITSTATUS(st)	(((st) >> 8) & 0377)
1346 #endif
1347 #ifndef WIFEXITED
1348 # define WIFEXITED(st)		(((st) & 0377) == 0)
1349 #endif
1350 
1351 #ifndef SIGFUNC_DEFINED
1352 typedef void		(*sigfunc_t) __P((int));
1353 #endif
1354 
1355 /* size of syslog buffer */
1356 #ifndef SYSLOG_BUFSIZE
1357 # define SYSLOG_BUFSIZE	1024
1358 #endif
1359 
1360 /*
1361 **  Size of tobuf (deliver.c)
1362 **	Tweak this to match your syslog implementation.  It will have to
1363 **	allow for the extra information printed.
1364 */
1365 
1366 #ifndef TOBUFSIZE
1367 # if (SYSLOG_BUFSIZE) > 512
1368 #  define TOBUFSIZE	(SYSLOG_BUFSIZE - 256)
1369 # else
1370 #  define TOBUFSIZE	256
1371 # endif
1372 #endif
1373 
1374 /*
1375 **  Size of prescan buffer.
1376 **	Despite comments in the _sendmail_ book, this probably should
1377 **	not be changed; there are some hard-to-define dependencies.
1378 */
1379 
1380 # define PSBUFSIZE	(MAXNAME + MAXATOM)	/* size of prescan buffer */
1381 /* fork routine -- set above using #ifdef _osname_ or in Makefile */
1382 # ifndef FORK
1383 # define FORK		vfork		/* function to call to fork mailer */
1384 # endif
1385 
1386 /*
1387 **  If we are going to link scanf anyway, use it in readcf
1388 */
1389 
1390 #if !defined(HASUNAME) && !defined(SCANF)
1391 # define SCANF		1
1392 #endif
1393