1# Copyright (c) 1983 Eric P. Allman 2# Copyright (c) 1988 The Regents of the University of California. 3# All rights reserved. 4# 5# %sccs.include.redist.sh% 6# 7# @(#)READ_ME 8.64 (Berkeley) 05/29/94 8# 9 10This directory contains the source files for sendmail. 11 12For detailed instructions, please read the document ../doc/op.me: 13 14 eqn ../doc/op.me | pic | ditroff -me 15 16The Makefile is for the new (4.4BSD) Berkeley make and uses syntax 17that is not recognized by older makes. It also has assumptions 18about the 4.4 file system layout built in. See below for details 19about other Makefiles. 20 21There is also a Makefile.dist which is much less clever, but works on 22the old traditional make. You can use this using: 23 24 make -f Makefile.dist 25 26************************************************** 27** Read below for more details of Makefiles. ** 28************************************************** 29 30There is also a shell script (makesendmail) that tries to be clever 31about using object subdirectories. It's pretty straightforward, and 32may help if you share a source tree among different architectures. 33 34************************************************************************** 35** IMPORTANT: DO NOT USE OPTIMIZATION (``-O'') IF YOU ARE RUNNING ** 36** GCC 2.4.x or 2.5.x. THERE IS A BUG IN THE GCC OPTIMIZER THAT ** 37** CAUSES SENDMAIL COMPILES TO FAIL MISERABLY. ** 38************************************************************************** 39 40Jim Wilson of Cygnus believes he has found the problem -- it will 41probably be fixed in GCC 2.5.6 -- but until this is verified, be 42very suspicious of gcc -O. 43 44************************************************************************** 45** IMPORTANT: Read the appropriate paragraphs in the section on ** 46** ``Operating System and Compile Quirks''. ** 47************************************************************************** 48 49 50+-----------+ 51| MAKEFILES | 52+-----------+ 53 54The "Makefile"s in these directories are from 4.4 BSD, and hence 55really only work properly if you are on a 4.4 system. In particular, 56they use new syntax that will not be recognized on old make programs, 57and some of them do things like ``.include ../../Makefile.inc'' to 58pick up some system defines. If you are getting sendmail separately, 59these files won't be included in the distribution, as they are 60outside of the sendmail tree. 61 62Instead, you should use one of the other Makefiles, such as 63Makefile.SunOS for a SunOS system, and so forth. These should 64work with the version of make that is appropriate for that 65system. 66 67There are a bunch of other Makefiles for other systems with names 68like Makefile.HPUX for an HP-UX system. They use the version of 69make that is native for that system. These are the Makefiles that 70I use, and they have "Berkeley quirks" in them. I can't guarantee 71that they will work unmodified in your environment. Many of them 72include -I/usr/sww/include/db and -L/usr/sww/lib -- this is Berkeley's 73location (the ``Software Warehouse'') for the new database libraries, 74described below. You don't have to remove these definitions if you 75don't have these directories. 76 77Please look for an appropriate Makefile before you start trying to 78compile with Makefile or Makefile.dist. 79 80If you want to port the new Berkeley make, you can get it from 81ftp.uu.net in the directory /systems/unix/bsd-sources/usr.bin/make. 82Diffs and instructions for building this version of make under 83SunOS 4.1.x are available on ftp.css.itd.umich.edu in 84/pub/systems/sun/Net2-make.sun4.diff.Z. Diffs and instructions 85for building this version of make under IBM AIX 3.2.4 are available 86on ftp.uni-stuttgart.de in /sw/src/patches/bsd-make-rus-patches. 87Paul Southworth <pauls@umich.edu> published a description of porting 88this make in comp.unix.bsd. 89 90The complete text of the Makefile.inc that is in the parent of the 91sendmail directory is: 92 93 # @(#)Makefile.inc 8.1 (Berkeley) 6/6/93 94 95 BINDIR?= /usr/sbin 96 97 98+----------------------+ 99| DATABASE DEFINITIONS | 100+----------------------+ 101 102There are several database formats that can be used for the alias files 103and for general maps. When used for alias files they interact in an 104attempt to be back compatible. 105 106The three options are NEWDB (the new Berkeley DB package), NDBM (the 107older DBM implementation -- the very old V7 implementation is no 108longer supported), and NIS (Network Information Services). Used alone 109these just include the support they indicate. [If you are using NEWDB, 110get the latest version from FTP.CS.Berkeley.EDU in /ucb/4bsd. DO NOT 111use the version from the Net2 distribution! However, if you are on 112BSD/386 or 386BSD-based systems, use the one that already exists 113on your system. You may need to #define OLD_NEWDB 1 to do this.] 114 115[NOTE WELL: it is CRITICAL that you remove ndbm.o from libdb.a and 116ndbm.h from the appropriate include directories if you want to get 117ndbm support. These files OVERRIDE calls to ndbm routines -- in 118particular, if you leave ndbm.h in, you can find yourself using 119the new db package even if you don't define NEWDB.] 120 121If NEWDB and NDBM are defined (but not NIS), then sendmail will read 122NDBM format alias files, but the next time a newaliases is run the 123format will be converted to NEWDB; that format will be used forever 124more. This is intended as a transition feature. [Note however that 125the NEWDB library also catches and maps NDBM calls; you will have to 126back out this feature to get this to work. See ``Quirks'' section 127below for details.] 128 129If all three are defined, sendmail operates as described above, and also 130looks for the file /var/yp/Makefile. If it exists, newaliases will 131build BOTH the NEWDB and NDBM format alias files. However, it will 132only use the NEWDB file; the NDBM format file is used only by the 133NIS subsystem. 134 135If NDBM and NIS are defined (regardless of the definition of NEWDB 136or the existance of /var/yp/Makefile), sendmail adds the special 137tokens "YP_LAST_MODIFIED" and "YP_MASTER_NAME", both of which are 138required if the NDBM file is to be used as an NIS map. 139 140All of -DNEWDB, -DNDBM, and -DNIS are normally defined in the DBMDEF 141line in the Makefile. 142 143 144+---------------+ 145| COMPILE FLAGS | 146+---------------+ 147 148Whereever possible, I try to make sendmail pull in the correct 149compilation options needed to compile on various environments based on 150automatically defined symbols. Some machines don't seem to have useful 151symbols availble, requiring the following compilation flags in the 152Makefile: 153 154SOLARIS Define this if you are running Solaris 2.0 or higher. 155SOLARIS_2_3 Define this if you are running Solaris 2.3 or higher. 156SUNOS403 Define this if you are running SunOS 4.0.3. 157NeXT Define this if you are on a NeXT box. (This one may 158 be pre-defined for you.) There are other hacks you 159 have to make -- see below. 160_AIX3 Define this if you are IBM AIX 3.x. 161RISCOS Define this if you are running RISC/os from MIPS. 162IRIX Define this if you are running IRIX from SGI. 163_SCO_unix_ Define this if you are on SCO UNIX. 164_SCO_unix_4_2 Define this if you are on SCO Open Server 3.2v4. 165 166If you are a system that sendmail has already been ported to, you 167probably won't have to touch these. But if you are porting, you may 168have to tweak the following compilation flags in conf.h in order to 169get it to compile and link properly: 170 171SYSTEM5 Adjust for System V (not necessarily Release 4). 172SYS5SIGNALS Use System V signal semantics -- the signal handler 173 is automatically dropped when the signal is caught. 174 If this is not set, use POSIX/BSD semantics, where the 175 signal handler stays in force until an exec or an 176 explicit delete. Implied by SYSTEM5. 177SYS5SETPGRP Use System V setpgrp() semantics. Implied by SYSTEM5. 178HASFLOCK Set this if you prefer to use the flock(2) system call 179 rather than using fcntl-based locking. Fcntl locking 180 has some semantic gotchas, but many vendor systems 181 also interface it to lockd(8) to do NFS-style locking. 182 For this reason, this should not be set unless you 183 don't have an alternative. 184HASUNAME Set if you have the "uname" system call. Implied by 185 SYSTEM5. 186HASUNSETENV Define this if your system library has the "unsetenv" 187 subroutine. 188HASSETSID Define this if you have the setsid(2) system call. This 189 is implied if your system appears to be POSIX compliant. 190HASINITGROUPS Define this if you have the initgroups(3) routine. 191HASSETVBUF Define this if you have the setvbuf(3) library call. 192 If you don't, setlinebuf will be used instead. This 193 defaults on if your compiler defines __STDC__. 194HASSETREUID Define this if you have setreuid(2) ***AND*** root can 195 use setreuid to change to an arbitrary user. This second 196 condition is not satisfied on AIX 3.x. You may find that 197 your system has setresuid(2), (for example, on HP-UX) in 198 which case you will also have to #define setreuid(r, e) 199 to be the appropriate call. Some systems (such as Solaris) 200 have a compatibility routine that doesn't work properly, 201 but may have "saved user ids" properly implemented so you 202 can ``#define setreuid(r, e) seteuid(e)'' and have it work. 203 The important thing is that you have a call that will set 204 the effective uid independently of the real or saved uid 205 and be able to set the effective uid back again when done. 206 There's a test program in ../test/t_setreuid.c that will 207 try things on your system. Setting this improves the 208 security, since sendmail doesn't have to read .forward 209 and :include: files as root. There are certain attacks 210 that may be unpreventable without this call. 211HASLSTAT Define this if you have symbolic links (and thus the 212 lstat(2) system call). This improves security. Unlike 213 most other options, this one is on by default, so you 214 need to #undef it in conf.h if you don't have symbolic 215 links (these days everyone does). 216NEEDGETOPT Define this if you need a reimplementation of getopt(3). 217 On some systems, getopt does very odd things if called 218 to scan the arguments twice. This flag will ask sendmail 219 to compile in a local version of getopt that works 220 properly. 221NEEDSTRTOL Define this if your standard C library does not define 222 strtol(3). This will compile in a local version. 223NEEDVPRINTF Define this if your standard C library does not define 224 vprintf(3). Note that the resulting fake implementation 225 is not very elegant and may not even work on some 226 architectures. 227NEEDFSYNC Define this if your standard C library does not define 228 fsync(2). This will try to simulate the operation using 229 fcntl(2); if that is not available it does nothing, which 230 isn't great, but at least it compiles and runs. 231HASGETUSERSHELL Define this to 1 if you have getusershell(3) in your 232 standard C library. If this is not defined, or is defined 233 to be 0, sendmail will scan the /etc/shells file (no 234 NIS-style support, defaults to /bin/sh and /bin/csh if 235 that file does not exist) to get a list of unrestricted 236 user shells. This is used to determine whether users 237 are allowed to forward their mail to a program or a file. 238GIDSET_T The type of entries in a gidset passed as the second 239 argument to getgroups(2). Historically this has been an 240 int, so this is the default, but some systems (such as 241 IRIX) pass it as a gid_t, which is an unsigned short. 242 This will make a difference, so it is important to get 243 this right! However, it is only an issue if you have 244 group sets. 245SLEEP_T The type returned by the system sleep() function. 246 Defaults to "unsigned int". Don't worry about this 247 if you don't have compilation problems. 248ARBPTR_T The type of an arbitrary pointer -- defaults to "void *". 249 If you are an very old compiler you may need to define 250 this to be "char *". 251LA_TYPE The type of load average your kernel supports. These 252 can be one of: 253 LA_ZERO (1) -- it always returns the load average as 254 "zero" (and does so on all architectures). 255 LA_SUBR (4) if you have the getloadavg(3) routine, 256 LA_MACH (5) to use MACH-style load averages (calls 257 processor_set_info()), 258 LA_PROCSTR (7) to read /proc/loadavg and interpret it 259 as a string representing a floating-point 260 number (Linux-style), 261 LA_FLOAT (3) if you read kmem and interpret the value 262 as a floating point number, 263 LA_INT (2) to interpret as a long integer, 264 LA_SHORT (6) to interpret as a short integer. 265 These last three have several other parameters that they 266 try to divine: the name of your kernel, the name of the 267 variable in the kernel to examine, the number of bits of 268 precision in a fixed point load average, and so forth. 269 In desperation, use LA_ZERO. The actual code is in 270 conf.c -- it can be tweaked if you are brave. 271SFS_TYPE Encodes how your kernel can locate the amount of free 272 space on a disk partition. This can be set to SFS_NONE 273 (0) if you have no way of getting this information, 274 SFS_USTAT (1) if you have the ustat(2) system call, 275 SFS_4ARGS (2) if you have a four-argument statfs(2) 276 system call (and the include file is <sys/statfs.h>), 277 SFS_VFS (3), SFS_MOUNT (4), SFS_STATFS (5) if you have 278 the two-argument statfs(2) system call with includes in 279 <sys/vfs.h>, <sys/mount.h>, or <sys/statfs.h> respectively, 280 or SFS_STATVFS (6) if you have the two-argument statvfs(2) 281 call. The default if nothing is defined is SFS_NONE. 282ERRLIST_PREDEFINED 283 If set, assumes that some header file defines sys_errlist. 284 This may be needed if you get type conflicts on this 285 variable -- otherwise don't worry about it. 286WAITUNION The wait(2) routine takes a "union wait" argument instead 287 of an integer argument. This is for compatibility with 288 old versions of BSD. 289SCANF You can set this to extend the F command to accept a 290 scanf string -- this gives you a primitive parser for 291 class definitions -- BUT it can make you vulnerable to 292 core dumps if the target file is poorly formed. 293SYSLOG_BUFSIZE You can define this to be the size of the buffer that 294 syslog accepts. If it is not defined, it assumes a 295 1024-byte buffer. If the buffer is very small (under 296 256 bytes) the log message format changes -- each 297 e-mail message will log many more messages, since it 298 will log each piece of information as a separate line 299 in syslog. 300BROKEN_RES_SEARCH 301 On Ultrix (and maybe other systems?) if you use the 302 res_search routine with an unknown host name, it returns 303 -1 but sets h_errno to 0 instead of HOST_NOT_FOUND. If 304 you set this, sendmail considers 0 to be the same as 305 HOST_NOT_FOUND. 306 307 308+-----------------------+ 309| COMPILE-TIME FEATURES | 310+-----------------------+ 311 312There are a bunch of features that you can decide to compile in, such 313as selecting various database packages and special protocol support. 314Several are assumed based on other compilation flags -- if you want to 315"un-assume" something, you probably need to edit conf.h. Compilation 316flags that add support for special features include: 317 318NDBM Include support for "new" DBM library for aliases and maps. 319 Normally defined in the Makefile. 320NEWDB Include support for Berkeley "db" package (hash & btree) 321 for aliases and maps. Normally defined in the Makefile. 322OLD_NEWDB If non-zero, the version of NEWDB you have is the old 323 one that does not include the "fd" call. This call was 324 added in version 1.5 of the Berkeley DB code. If you 325 use -DOLD_NEWDB=0 it forces you to use the new interface. 326NIS Define this to get NIS (YP) support for aliases and maps. 327 Normally defined in the Makefile. 328USERDB Include support for the User Information Database. Implied 329 by NEWDB in conf.h. 330IDENTPROTO Define this as 1 to get IDENT (RFC 1413) protocol support. 331 This is assumed unless you are running on Ultrix or 332 HP-UX, both of which have a problem in the UDP 333 implementation. You can define it to be 0 to explicitly 334 turn off IDENT protocol support. 335MIME Include support for MIME-encapsulated error messages. 336LOG Set this to get syslog(3) support. Defined by default 337 in conf.h. You want this if at all possible. 338NETINET Set this to get TCP/IP support. Defined by default 339 in conf.h. You probably want this. 340NETISO Define this to get ISO networking support. 341SMTP Define this to get the SMTP code. Implied by NETINET 342 or NETISO. 343NAMED_BIND Define this to get DNS (name daemon) support, including 344 MX support. The specs you must use this if you run 345 SMTP. Defined by default in conf.h. 346QUEUE Define this to get queueing code. Implied by NETINET 347 or NETISO; required by SMTP. This gives you other good 348 stuff -- it should be on. 349DAEMON Define this to get general network support. Implied by 350 NETINET or NETISO. Defined by default in conf.h. You 351 almost certainly want it on. 352MATCHGECOS Permit fuzzy matching of user names against the full 353 name (GECOS) field in the /etc/passwd file. This should 354 probably be on, since you can disable it from the config 355 file if you want to. Defined by default in conf.h. 356SETPROCTITLE Try to set the string printed by "ps" to something 357 informative about what sendmail is doing. Defined by 358 default in conf.h. 359 360 361+---------------------+ 362| DNS/RESOLVER ISSUES | 363+---------------------+ 364 365Many systems have old versions of the resolver library. At a minimum, 366you should be running BIND 4.8.3; older versions may compile, but they 367have known bugs that should give you pause. 368 369Common problems in old versions include "undefined" errors for 370dn_skipname. 371 372Some people have had a problem with BIND 4.9; it uses some routines 373that it expects to be externally defined such as strerror(). It may 374help to link with "-l44bsd" to solve this problem. 375 376!PLEASE! be sure to link with the same version of the resolver as 377the header files you used -- some people have used the 4.9 headers 378and linked with BIND 4.8 or vice versa, and it doesn't work. 379Unfortunately, it doesn't fail in an obvious way -- things just 380subtly don't work. 381 382 383+-------------------------------------+ 384| OPERATING SYSTEM AND COMPILE QUIRKS | 385+-------------------------------------+ 386 387GCC 2.5.x problems *** IMPORTANT *** 388 Date: Mon, 29 Nov 93 19:08:44 PST 389 From: wilson@cygnus.com (Jim Wilson) 390 Message-Id: <9311300308.AA04608@cygnus.com> 391 To: kenner@vlsi1.ultra.nyu.edu 392 Subject: [cattelan@thebarn.com: gcc 2.5.4-2.5.5 -O bug] 393 Cc: cattelan@thebarn.com, rms@gnu.ai.mit.edu, sendmail@cs.berkeley.edu 394 395 This fixes a problem that occurs when gcc 2.5.5 is used to compile 396 sendmail 8.6.4 with optimization on a sparc. 397 398 Mon Nov 29 19:00:14 1993 Jim Wilson (wilson@sphagnum.cygnus.com) 399 400 * reload.c (find_reloads_toplev): Replace obsolete reference to 401 BYTE_LOADS_*_EXTEND with LOAD_EXTEND_OP. 402 403 *** clean-ss-931128/reload.c Sun Nov 14 16:20:01 1993 404 --- ss-931128/reload.c Mon Nov 29 18:52:55 1993 405 *************** find_reloads_toplev (x, opnum, type, ind 406 *** 3888,3894 **** 407 force a reload in that case. So we should not do anything here. */ 408 409 else if (regno >= FIRST_PSEUDO_REGISTER 410 ! #if defined(BYTE_LOADS_ZERO_EXTEND) || defined(BYTE_LOADS_SIGN_EXTEND) 411 && (GET_MODE_SIZE (GET_MODE (x)) 412 <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) 413 #endif 414 --- 3888,3894 ---- 415 force a reload in that case. So we should not do anything here. */ 416 417 else if (regno >= FIRST_PSEUDO_REGISTER 418 ! #ifdef LOAD_EXTEND_OP 419 && (GET_MODE_SIZE (GET_MODE (x)) 420 <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) 421 #endif 422 423 424SunOS 4.x (Solaris 1.x) 425 You may have to use -lresolv on SunOS. However, beware that 426 this links in a new version of gethostbyname that does not 427 understand NIS, so you must have all of your hosts in DNS. 428 429 Some people have reported problems with the SunOS version of 430 -lresolv and/or in.named, and suggest that you get a newer 431 version. The symptoms are delays when you connect to the 432 SMTP server on a SunOS machine or having your domain added to 433 addresses inappropriately. There is a version of BIND 434 version 4.9 on gatekeeper.DEC.COM in pub/BSD/bind/4.9. 435 436 There is substantial disagreement about whether you can make 437 this work with resolv+, which allows you to specify a search-path 438 of services. Some people report that it works fine, others 439 claim it doesn't work at all (including causing sendmail to 440 drop core when it tries to do multiple resolv+ lookups for a 441 single job). I haven't tried resolv+, as we use DNS exclusively. 442 443 Should you want to try resolv+, it is on ftp.uu.net in 444 /networking/ip/dns. 445 446 Apparently getservbyname() can fail under moderate to high 447 load under some circumstances. This will exhibit itself as 448 the message ``554 makeconnection: service "smtp" unknown''. 449 The problem has been traced to one or more blank lines in 450 /etc/services on the NIS server machine. Delete these 451 and it should work. This info is thanks to Brian Bartholomew 452 <bb@math.ufl.edu> of I-Kinetics, Inc. 453 454Solaris 2.x (SunOS 5.x) 455 To compile for Solaris, be sure you use -DSOLARIS. 456 457 To the best of my knowledge, Solaris does not have the 458 gethostbyname problem described above. However, it does 459 have another one: 460 461 From a correspondent: 462 463 For solaris 2.2, I have 464 465 hosts: files dns 466 467 in /etc/nsswitch.conf and /etc/hosts has to have the fully 468 qualified host name. I think "files" has to be before "dns" 469 in /etc/nsswitch.conf during bootup. 470 471 From another correspondent: 472 473 When running sendmail under Solaris, the gethostbyname() 474 hack in conf.c which should perform proper canonicalization 475 of host names could fail. Result: the host name is not 476 canonicalized despite the hack, and you'll have to define $j 477 and $m in sendmail.cf somewhere. 478 479 The reason could be that /etc/nsswitch.conf is improperly 480 configured (at least from sendmail's point of view). For 481 example, the line 482 483 hosts: files nisplus dns 484 485 will make gethostbyname() look in /etc/hosts first, then ask 486 nisplus, then dns. However, if /etc/hosts does not contain 487 the full canonicalized hostname, then no amount of 488 gethostbyname()s will work. 489 490 Solution (or rather, a workaround): Ask nisplus first, then 491 dns, then local files: 492 493 hosts: nisplus dns [NOTFOUND=return] files 494 495 The Solaris "syslog" function is apparently limited to something 496 about 90 characters because of a kernel limitation. If you have 497 source code, you can probably up this number. You can get patches 498 that fix this problem: the patch ids are: 499 500 Solaris 2.1 100834 501 Solaris 2.2 100999 502 Solaris 2.3 101318 503 504 Be sure you have the appropriate patch installed or you won't 505 see system logging. 506 507OSF/1 508 If you are compiling on OSF/1 (DEC Alpha), you must use 509 -L/usr/shlib (otherwise it core dumps on startup). You may also 510 need -mld to get the nlist() function, although some versions 511 apparently don't need this. 512 513 Also, the enclosed makefile removed /usr/sbin/smtpd; if you need 514 it, just create the link to the sendmail binary. 515 516IRIX 517 The header files on SGI IRIX are completely prototyped, and as 518 a result you can sometimes get some warning messages during 519 compilation. These can be ignored. There are two errors in 520 deliver only if you are using gcc, both of the form ``warning: 521 passing arg N of `execve' from incompatible pointer type''. 522 Also, if you compile with -DNIS, you will get a complaint 523 about a declaration of struct dom_binding in a prototype 524 when compiling map.c; this is not important because the 525 function being prototyped is not used in that file. 526 527NeXT 528 If you are compiling on NeXT, you will have to create an empty 529 file "unistd.h" and create a file "dirent.h" containing: 530 531 #include <sys/dir.h> 532 #define dirent direct 533 534 (The Makefile.NeXT should try to do both of these for you.) 535 536 Apparently, there is a bug in getservbyname on Nextstep 3.0 537 that causes it to fail under some circumstances with the 538 message "SYSERR: service "smtp" unknown" logged. You should 539 be able to work around this by including the line: 540 541 OOPort=25 542 543 in your .cf file. 544 545 You may have to use -DNeXT. 546 547BSDI (BSD/386) 1.0, NetBSD 0.9, FreeBSD 1.0 548 The "m4" from BSDI won't handle the config files properly. 549 I haven't had a chance to test this myself. 550 551 The M4 shipped in FreeBSD and NetBSD 0.9 don't handle the config 552 files properly. One must use either GNU m4 1.1 or the PD-M4 553 recently posted in comp.os.386bsd.bugs (and maybe others). 554 NetBSD-current includes the PD-M4 (as stated in the NetBSD file 555 CHANGES). 556 557 FreeBSD 1.0 RELEASE has uname(2) now. Use -DUSEUNAME in order to 558 use it (look into Makefile.FreeBSD). NetBSD-current may have 559 it too but it has not been verified. 560 561 You cannot port the latest version of the Berkeley db library 562 and use it with sendmail without recompiling the world. This 563 is because C library routines use the older version which have 564 incompatible header files -- the result is that it can't read 565 other system files, such as /etc/passwd, unless you use the 566 new db format throughout your system. You should normally just 567 use the version of db supplied in your release. You may need 568 to use -DOLD_NEWDB=1 to make this work -- this turns off some 569 new interface calls (for file locking) that are not in older 570 versions of db. You'll get compile errors if you need this 571 flag and don't have it set. 572 5734.3BSD 574 If you are running a "virgin" version of 4.3BSD, you'll have 575 a very old resolver and be missing some header files. The 576 header files are simple -- create empty versions and everything 577 will work fine. For the resolver you should really port a new 578 version (4.8.3 or later) of the resolver; 4.9 is available on 579 gatekeeper.DEC.COM in pub/BSD/bind/4.9. If you are really 580 determined to continue to use your old, buggy version (or as 581 a shortcut to get sendmail working -- I'm sure you have the 582 best intentions to port a modern version of BIND), you can 583 copy ../contrib/oldbind.compat.c into src and add 584 oldbind.compat.o to OBJADD in the Makefile. 585 586A/UX 587 Date: Tue, 12 Oct 1993 18:28:28 -0400 (EDT) 588 From: "Eric C. Hagberg" <hagberg@med.cornell.edu> 589 Subject: Fix for A/UX ndbm 590 591 I guess this isn't really a sendmail bug, however, it is something 592 that A/UX users should be aware of when compiling sendmail 8.6. 593 594 Apparently, the calls that sendmail is using to the ndbm routines 595 in A/UX 3.0.x contain calls to "broken" routines, in that the 596 aliases database will break when it gets "just a little big" 597 (sorry I don't have exact numbers here, but it broke somewhere 598 around 20-25 aliases for me.), making all aliases non-functional 599 after exceeding this point. 600 601 What I did was to get the gnu-dbm-1.6 package, compile it, and 602 then re-compile sendmail with "-lgdbm", "-DNDBM", and using the 603 ndbm.h header file that comes with the gnu-package. This makes 604 things behave properly. 605 606 I suppose porting the New Berkeley db package is another route, 607 however, I made a quick attempt at it, and found it difficult 608 (not easy at least); the gnu-dbm package "configured" and 609 compiled easily. 610 611DG/UX 612 Apparently, /bin/mail doesn't work properly for delivery on 613 DG/UX -- the person who has this working, Douglas Anderson 614 <dlander@afterlife.ncsc.mil>, used procmail instead. 615 616Apollo DomainOS 617 If you are compiling on Apollo, you will have to create an empty 618 file "unistd.h" and create a file "dirent.h" containing: 619 620 #include <sys/dir.h> 621 #define dirent direct 622 623 (The Makefile.DomainOS will attempt to do both of these for you.) 624 625HP-UX 8.00 626 Date: Mon, 24 Jan 1994 13:25:45 +0200 627 From: Kimmo Suominen <Kimmo.Suominen@lut.fi> 628 Subject: 8.6.5 w/ HP-UX 8.00 on s300 629 630 Just compiled and fought with sendmail 8.6.5 on a HP9000/360 (ie. a 631 series 300 machine) running HP-UX 8.00. 632 633 I was getting segmentation fault when delivering to a local user. 634 With debugging I saw it was faulting when doing _free@libc... *sigh* 635 It seems the new implementation of malloc on s300 is buggy as of 8.0, 636 so I tried out the one in -lmalloc (malloc(3X)). With that it seems 637 to work just dandy. 638 639 When linking, you will get the following error: 640 641 ld: multiply defined symbol _freespace in file /usr/lib/libmalloc.a 642 643 but you can just ignore it. You might want to add this info to the 644 README file for the future... 645 646Linux 647 Something broke between versions 0.99.13 and 0.99.14 of Linux: 648 the flock() system call gives errors. If you are running .14, 649 you must not use flock. You can do this with -DHASFLOCK=0. 650 651AIX 652 This version of sendmail does not support MB, MG, and MR resource 653 records, which are supported by AIX sendmail. 654 655RISC/os 656 RISC/os from MIPS is a merged AT&T/Berkeley system. When you 657 compile on that platform you will get duplicate definitions 658 on many files. You can ignore these. 659 660System V Release 4 Based Systems 661 There is a single Makefile that is intended for all SVR4-based 662 systems (called Makefile.SVR4). It defines __svr4__, which is 663 predefined by some compilers. If your compiler already defines 664 this compile variable, you can delete the definition from the 665 Makefile. 666 667 It's been tested on Dell Issue 2.2. 668 669DELL SVR4 670 Date: Mon, 06 Dec 1993 10:42:29 EST 671 From: "Kimmo Suominen" <kim@grendel.lut.fi> 672 Message-ID: <2d0352f9.lento29@lento29.UUCP> 673 To: eric@cs.berkeley.edu 674 Cc: sendmail@cs.berkeley.edu 675 Subject: Notes for DELL SVR4 676 677 Eric, 678 679 Here are some notes for compiling Sendmail 8.6.4 on DELL SVR4. I ran 680 across these things when helping out some people who contacted me by 681 e-mail. 682 683 1) Use gcc 2.4.5 (or later?). Dell distributes gcc 2.1 with their 684 Issue 2.2 Unix. It is too old, and gives you problems with 685 clock.c, because sigset_t won't get defined in <sys/signal.h>. 686 This is due to a problematic protection rule in there, and is 687 fixed with gcc 2.4.5. 688 689 2) If you don't use the new Berkeley DB (-DNEWDB), then you need 690 to add "-lc -lucb" to the libraries to link with. This is because 691 the -ldbm distributed by Dell needs the bcopy, bcmp and bzero 692 functions. It is important that you specify both libraries in 693 the given order to be sure you only get the BSTRING functions 694 from the UCB library (and not the signal routines etc.). 695 696 3) Don't leave out "-lelf" even if compiling with "-lc -lucb". 697 The UCB library also has another copy of the nlist routines, 698 but we do want the ones from "-lelf". 699 700 If anyone needs a compiled gcc 2.4.5 and/or a ported DB library, they 701 can use anonymous ftp to fetch them from lut.fi in the /kim directory. 702 They are copies of what I use on grendel.lut.fi, and offering them 703 does not imply that I would also support them. I have sent the DB 704 port for SVR4 back to Keith Bostic for inclusion in the official 705 distribution, but I haven't heard anything from him as of today. 706 707 - gcc-2.4.5-svr4.tar.gz (gcc 2.4.5 and the corresponding libg++) 708 - db-1.72.tar.gz (with source, objects and a installed copy) 709 710 Cheers 711 + Kim 712 -- 713 * Kimmo.Suominen@lut.fi * SysVr4 enthusiast at GRENDEL.LUT.FI * 714 * KIM@FINFILES.BITNET * Postmaster and Hostmaster at LUT.FI * 715 * + 358 200 865 718 * Unix area moderator at NIC.FUNET.FI * 716 717ConvexOS 10.1 and below 718 In order to use the name server, you must create the file 719 /etc/use_nameserver. If this file does not exist, the call 720 to res_init() will fail and you will have absolutely no 721 access to DNS, including MX records. 722 723Non-DNS based sites 724 This version of sendmail always tries to connect to the Domain 725 Name System (DNS) to resolve names, regardless of the setting 726 of the `I' option. On most systems that are not running DNS, 727 this will fail quickly and sendmail will continue, but on some 728 systems it has a long timeout. If you have this problem, you 729 will have to recompile without NAMED_BIND. Some people have 730 claimed that they have successfully used "OI+USEVC" to force 731 sendmail to use a virtual circuit -- this will always time out 732 quickly, but also tells sendmail that a failed connection 733 should requeue the message (probably not what you intended). 734 A future release of sendmail will correct this problem. 735 736Both NEWDB and NDBM 737 If you use both -DNDBM and -DNEWDB, you must delete the module 738 ndbm.o from libdb.a and delete the file "ndbm.h" from the files 739 that get installed (that is, use the OLD ndbm.h, not the new 740 ndbm.h). This compatibility module maps ndbm calls into DB 741 calls, and breaks things rather badly. 742 743GNU getopt 744 I'm told that GNU getopt has a problem in that it gets confused 745 by the double call. Use the version in conf.c instead. 746 747BIND 4.9.2 and Ultrix 748 If you are running on Ultrix, be sure you read conf/Info.Ultrix 749 in the BIND distribution very carefully -- there is information 750 in there that you need to know in order to avoid errors of the 751 form: 752 753 /lib/libc.a(gethostent.o): sethostent: multiply defined 754 /lib/libc.a(gethostent.o): endhostent: multiply defined 755 /lib/libc.a(gethostent.o): gethostbyname: multiply defined 756 /lib/libc.a(gethostent.o): gethostbyaddr: multiply defined 757 758 during the link stage. 759 760 761+--------------+ 762| MANUAL PAGES | 763+--------------+ 764 765The manual pages have been written against the -mandoc macros 766instead of the -man macros. The latest version of groff has them 767included. You can also get a copy from FTP.UU.NET in directory 768/systems/unix/bsd-sources/share/tmac. 769 770 771+-----------------+ 772| DEBUGGING HOOKS | 773+-----------------+ 774 775As of 8.6.5, sendmail daemons will catch a SIGUSR1 signal and log 776some debugging output (logged at LOG_DEBUG severity). The 777information dumped is: 778 779 * The value of the $j macro. 780 * A warning if $j is not in the set $=w. 781 * A list of the open file descriptors. 782 * The contents of the connection cache. 783 * If ruleset 89 is defined, it is evaluated and the results printed. 784 785This allows you to get information regarding the runtime state of the 786daemon on the fly. This should not be done too frequently, since 787the process of rewriting may lose memory which will not be recovered. 788Also, ruleset 89 may call non-reentrant routines, so there is a small 789non-zero probability that this will cause other problems. It is 790really only for debugging serious problems. 791 792A typical formulation of ruleset 89 would be: 793 794 R$* $@ $>0 some test address 795 796 797+-----------------------------+ 798| DESCRIPTION OF SOURCE FILES | 799+-----------------------------+ 800 801The following list describes the files in this directory: 802 803Makefile The makefile used here; this version only works with 804 the new Berkeley make. 805Makefile.dist A trimmed down version of the makefile that works with 806 the old make. 807READ_ME This file. 808TRACEFLAGS My own personal list of the trace flags -- not guaranteed 809 to be particularly up to date. 810alias.c Does name aliasing in all forms. 811arpadate.c A subroutine which creates ARPANET standard dates. 812clock.c Routines to implement real-time oriented functions 813 in sendmail -- e.g., timeouts. 814collect.c The routine that actually reads the mail into a temp 815 file. It also does a certain amount of parsing of 816 the header, etc. 817conf.c The configuration file. This contains information 818 that is presumed to be quite static and non- 819 controversial, or code compiled in for efficiency 820 reasons. Most of the configuration is in sendmail.cf. 821conf.h Configuration that must be known everywhere. 822convtime.c A routine to sanely process times. 823daemon.c Routines to implement daemon mode. This version is 824 specifically for Berkeley 4.1 IPC. 825deliver.c Routines to deliver mail. 826domain.c Routines that interface with DNS (the Domain Name 827 System). 828err.c Routines to print error messages. 829envelope.c Routines to manipulate the envelope structure. 830headers.c Routines to process message headers. 831macro.c The macro expander. This is used internally to 832 insert information from the configuration file. 833main.c The main routine to sendmail. This file also 834 contains some miscellaneous routines. 835map.c Support for database maps. 836mci.c Routines that handle mail connection information caching. 837parseaddr.c The routines which do address parsing. 838queue.c Routines to implement message queueing. 839readcf.c The routine that reads the configuration file and 840 translates it to internal form. 841recipient.c Routines that manipulate the recipient list. 842savemail.c Routines which save the letter on processing errors. 843sendmail.h Main header file for sendmail. 844srvrsmtp.c Routines to implement server SMTP. 845stab.c Routines to manage the symbol table. 846stats.c Routines to collect and post the statistics. 847sysexits.c List of error messages associated with error codes 848 in sysexits.h. 849trace.c The trace package. These routines allow setting and 850 testing of trace flags with a high granularity. 851udb.c The user database interface module. 852usersmtp.c Routines to implement user SMTP. 853util.c Some general purpose routines used by sendmail. 854version.c The version number and information about this 855 version of sendmail. Theoretically, this gets 856 modified on every change. 857 858Eric Allman 859 860(Version 8.64, last update 05/29/94 13:08:35) 861