Copyright (c) 1997 Jonathan Stone
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by Jonathan Stone.
4. Neither the name of the author nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd June 7, 1997 .Dt COMPAT_ULTRIX 8 .Os NetBSD 1.3 .Sh NAME .Nm compat_ultrix .Nd setup procedure for Ultrix compatibility on mips and vax architectures .Sh DESCRIPTION NetBSD/mips and NetBSD/vax architectures can run Risc ULTRIX and Vax ULTRIX executables, respectively. However, you have to worry about the legal issues of ensuring that you have a right to use any ULTRIX binaries on your machine.
p Most executables will work. The exceptions include programs that use proprietary, Ultrix-specific features (LAT, CI support, DECnet support) and various system calls, ioctl()'s, or Ultrix kernel semantics that are difficult to emulate (e.g., Ultrix packetfilter) or buggy (e.g., Ultrix YP).
p All Ultrix executables are static, so no shared libraries are required for Ultrix compatiblity. However, Ultrix is based on a 4.3BSD alpha release. Ultrix commands and libraries are often much older than their NetBSD or even SunOS 4.x equivalents, and may require incompatible configuration files. .Sh SYSTEM CONFIGURATION FILES Set up resolv.conf and svc.conf as below:
p l -tag -width 123 -compact -offset indent t # mkdir -p /emul/ultrix/etc t # cd /emul/ultrix/etc t # egrep 'domain|nameserver' /etc/resolv.conf > ./resolv.conf t # cp -p /usr/share/samples/emul/ultrix/etc/* ./ .El
p .Ss /etc/resolv.conf The Ultrix resolver library only understands .Sy domain and .Sy nameserver lines in .Xr /etc/resolv.conf 5 . You should create a copy of /etc/resolv.conf containing only those commands and put it in /emul/ultrix/etc/resolv.conf. Note that the domain search order used by Ultrix executables may not be the same as native binaries; there is no good way around this.
p .Ss /etc/svc.conf Ultrix uses /etc/svc.conf to select an ordered search of YP, Hesiod, or local flat-file mappings. You should create an /emul/ultrix/etc/svc.conf specifying either local files or bind (DNS) lookups for all Ultrix name services. .Sh BUGS
p RISC Ultrix YP(NIS) is know to not work. The Ultrix YP libraries have a consistent endian-ness bug. Ultrix YP client will not inter-operate with the NetBSD .Xr ypbind 8 process. The only workaround is to use /etc/svc.conf to disable YP(NIS).
p The ndbm hashed-password file used by Ultrix are incompatible with the db hashed-password file used by NetBSD. There is no good solution for this. (YP would be a good one, if Ultrix YP worked.)
p The API used by Xservers to talk to the kernel is currently compatible with Ultrix 4.1. An implementation of the Ultrix 4.2 Xws interface (used by X11R6) is in progress.
p A complete list of things which fail to work in Ultrix compatibility mode should be added here. .Sh SEE ALSO .Xr resolv.conf 5 .
Indexes created Mon Oct 20 01:09:56 GMT 2025