From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-request@math.gatech.edu>
Received: (qmail 1693 invoked from network); 12 Nov 1997 13:33:44 -0000
Received: from math.gatech.edu (list@130.207.146.50)
  by ns1.primenet.com.au with SMTP; 12 Nov 1997 13:33:44 -0000
Received: (from list@localhost)
	by math.gatech.edu (8.8.5/8.8.5) id IAA03878;
	Wed, 12 Nov 1997 08:28:19 -0500 (EST)
Resent-Date: Wed, 12 Nov 1997 08:28:19 -0500 (EST)
From: Anthony Heading <aheading@jpmorgan.com>
Message-Id: <199711121322.NAA09473@gmp-etpres1.uk.jpmorgan.com>
Subject: Bizarre Solaris problem
To: zsh-workers@math.gatech.edu
Date: Wed, 12 Nov 1997 13:22:44 +0000 (GMT)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Resent-Message-ID: <"IdKcw3.0.Xy.pxQQq"@math>
Resent-From: zsh-workers@math.gatech.edu
X-Mailing-List: <zsh-workers@math.gatech.edu> archive/latest/3607
X-Loop: zsh-workers@math.gatech.edu
Precedence: list
Resent-Sender: zsh-workers-request@math.gatech.edu

This has me perplexed. I have a small program, attached below, which
does little more than a gethostbyname() call.

I compile it *statically* under SunOS 4.1.3, using either acc or gcc,
and attempt to run it under Solaris 2.5.1.

It works OK for any standard /bin/sh or /bin/csh login.  If however I
use an account with /usr/local/bin/zsh (3.0.5) as the login (/etc/passwd)
shell, it hangs in the gethostbyname() call.

Further investigation using subshells from a /bin/csh login reveals:

su <zsh> : OK
zsh -l : OK
su - <zsh> : hangs

Having got into a "hang" configuration, su - <csh> *doesn't* reverse
back into a working state.

Those four pieces of evidence seem to rule out the problem as being in
the environment or the zlogin file?

Other info:  I'm unaware of anything needed to "authorize" zsh (a la
e.g. /etc/shells under some BSD-like environments).  Vanilla 3.0.5
compilation (except for my vared patch sent to the list a week or
two ago).  Nothing in zlogin except for an stty config line.

Where does one start looking here?  

Anthony
---------

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

int main(int argc, char *argv[])
{
  struct hostent *m;
  unsigned char *a;

  if (argc < 2) {
    fprintf(stderr, "usage: %s <hostname>\n", argv[0]); 
    exit(1);
  }
  m=gethostbyname(argv[1]);
  if (!m || !m->h_addr_list || !m->h_addr_list[0]) {
    fprintf(stderr, "No such host %s\n", argv[1]);
    exit(1);
  }
  a = (unsigned char *)m->h_addr_list[0];
  fprintf(stderr, "%d.%d.%d.%d\n", a[0], a[1], a[2], a[3]);
  return 0;
}