a0020@rrz.uni-koeln.de (Axel Clauberg) (07/31/90)
AIX/370 1.2's nameserver seems to be based on a very old BSD version (4.7 ?).
As this version has a lot of bugs I'd like to install a more recent one.
I tried to install bind 4.8.1 from Berkeley and 4.8.2. The resolver library
is working, tools like nslookup run fine using a remote server.
Running named gives you format errors when a name not being in the cache
or authoritative data is to be resolved.
Before I start to debug:
does anyone have a properly running bind (named) rel. >= 4.8.1 on AIX/370
or PS/2 release 1.2 ?
Axel
--
Axel Clauberg, Regional Computing Center, University of Cologne
Robert-Koch Str. 10
D- 5000 Koeln 41, West-Germany
Phone: +49 (221) 478-5589
Internet: cl@rrz.Uni-Koeln.DE
Bitnet: a0020@DK0RRZK1booga@polyslo.CalPoly.EDU (Steve Jankowski [cut]) (08/02/90)
In article <A0020.90Jul31105537@aix370.rrz.uni-koeln.de> a0020@rrz.uni-koeln.de (Axel Clauberg) writes: >AIX/370 1.2's nameserver seems to be based on a very old BSD version (4.7 ?). >As this version has a lot of bugs I'd like to install a more recent one. >I tried to install bind 4.8.1 from Berkeley and 4.8.2. The resolver library >is working, tools like nslookup run fine using a remote server. >Running named gives you format errors when a name not being in the cache >or authoritative data is to be resolved. >Before I start to debug: >does anyone have a properly running bind (named) rel. >= 4.8.1 on AIX/370 >or PS/2 release 1.2 ? We have the same problem here and I've started a port of named from 4.8.1 to AIX 1.2 on a PS/2. The problem with AIX (especially the PS/2) is their (ahem) crappy C compiler. named uses bit fields to pick apart request packets. This is a less than portable solution, but it's ok since most C compilers honor the spirit of bit fields and pack the bits into the smallest space possible. But, the AIX compiler just makes every bit field 32-bits and leaves it at that. If you look in arpa/nameser.h you'll notice that they've put in two unsigned chars and a bunch of macros to replace the bit fields. (this is in the structure that represents a request packet) This means lots of manual labor to change each reference to the structure. I started the work, but stopped when I heard that we would be getting AIX 1.2 which reportedly has named from 4.8.1. But I just string'ed the binary and I'm not impressed; the dates in the file are all from 1986. If I actually go through with the port and get it working, I'll let people know. Steve Jankowski booga@polyslo.calpoly.edu Cal Poly, San Luis Obispo, Computer Science Systems Administrator (uunet!pyramid!polyslo!booga) -- Steve Jankowski -------------------------------------------------------------- booga@polyslo.CalPoly.EDU |V| |) "I'm not a Sys Admin, | |r |)ooga but I play one on TV." buggercornholernoogienoogiebuggerpooper
jackv@turnkey.tcc.com (Jack F. Vogel) (08/03/90)
In article <A0020.90Jul31105537@aix370.rrz.uni-koeln.de> a0020@rrz.uni-koeln.de (Axel Clauberg) writes: >AIX/370 1.2's nameserver seems to be based on a very old BSD version (4.7 ?). [...] >Before I start to debug: >does anyone have a properly running bind (named) rel. >= 4.8.1 on AIX/370 >or PS/2 release 1.2 ? Funny you should ask :-}. What I believe is called the July preventative update by the time it grinds through the IBM machinery includes my port of BIND 4.8.1. This is not some small fix, it is a complete new port. You will still probably want the bind source since we are not shipping nslookup. I will say a little more about building this stuff in another followup. Many of you out there will probably be interested to know that this update also includes my port of sendmail 5.61 (yes, finally). I have left the Berkeley SIDs in the binaries so you can verify the version levels using what. Have fun! Disclaimer: I fix code, I don't speak for LCC nor IBM. -- Jack F. Vogel jackv@locus.com AIX370 Technical Support - or - Locus Computing Corp. jackv@turnkey.TCC.COM
jackv@turnkey.tcc.com (Jack F. Vogel) (08/03/90)
In article <26b7929a.68e3@petunia.CalPoly.EDU> booga@polyslo.CalPoly.EDU (Steve Jankowski [cut]) writes: [...stuff about the nameserver being back-level deleted...] >We have the same problem here and I've started a port of named from >4.8.1 to AIX 1.2 on a PS/2. The problem with AIX (especially the >PS/2) is their (ahem) crappy C compiler. named uses bit fields to pick >apart request packets. This is a less than portable solution, but >it's ok since most C compilers honor the spirit of bit fields and >pack the bits into the smallest space possible. But, the AIX >compiler just makes every bit field 32-bits and leaves it at that. Yup, ran into this problem in the new port I mentioned in a previous posting. Interestingly enough, the 370 Metaware compiler does things correctly! However there isn't any option to the 386 compiler to keep it from doing this, oh well :-{. >If you look in arpa/nameser.h you'll notice that they've put in >two unsigned chars and a bunch of macros to replace the bit fields. >(this is in the structure that represents a request packet) >This means lots of manual labor to change each reference to the >structure. I started the work, but stopped when I heard that >we would be getting AIX 1.2 which reportedly has named from >4.8.1. But I just string'ed the binary and I'm not impressed; >the dates in the file are all from 1986. The new BIND is in what I believe is called the July preventative update as I said previously, I don't know if you have to request it or if you get it automatically. The easiest way to tell if it is installed is to see if you have a new binary, /etc/named-xfer. This is the asyncronous zone transfer facility, if its there you have the new nameserver. Now a little bit on how the port was done... In my first attempt at the code I went ahead as you described and used the macros, and as you noticed this is a fair amount of work and change to the code. Then a friend working in our Boston office (Thanks Brad!) came up with a creative way around this problem and this is what I actually implemented in the code that's shipping. The header structure as shipped by Berkeley contains an unsigned short id variable and then 2 unsigned chars carved up as the bitfields. What I did was make one unsigned int as a 32-bit bitfield and just declare the first 16 bits as the id. Doing this the PS/2 compiler leaves things alone. You can take a look at this change after installing the update. The important thing to observe if you use this structure is that you must define BIT_ZERO_ON_LEFT for the 370 and BIT_ZERO_ON_RIGHT for the PS/2. Also, just as a tip for those out there who might want to build nslookup or other related tools, be sure you use -DBSD=4.3 and -D_BSD in your compiler defines in addition to those mentioned above, then in your link command be sure and include -lbsd. With the new nameser.h and these proper defines the BSD source should build and work without modification. >If I actually go through with the port and get it working, I'll >let people know. Hope you don't waste too much time before you see this :-}. I suggest you call your IBM representative and request the latest preventative update for this fix. As I mentioned in a previous followup, I also finished the sendmail 5.61 port and it is also in this update. Disclaimer: I get paid to solve problems, not to speak for LCC or IBM. -- Jack F. Vogel jackv@locus.com AIX370 Technical Support - or - Locus Computing Corp. jackv@turnkey.TCC.COM