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Date: Wed, 4 Sep 1996 17:48:04 -0700 (PDT)
From: Paul Traina <pst@jnx.com>
Message-Id: <199609050048.RAA12235@base.jnx.com>
To: wpaul@freebsd.org
Subject: proper entry for /etc/groups override?
Cc: bugs@freebsd.org
Sender: owner-bugs@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

Bill,

I'm having problems with YP in /etc/group and I'm wondering what I'm doing
wrong.

With the following program:

------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <grp.h>

main(int argc, char **argv)
{
	char **g;
	struct group *gr;

	gr = getgrgid((gid_t) 0);
	if (!gr)
		perror("no gr");

	for (g = gr->gr_mem; ; ++g) {
		if (!*g) {
			printf(" -- done\n");
			exit(0);
		}
		printf("%s ", *g);
	}
}
----------

and a YP group entry with:

pst@base$ ypmatch wheel group
wheel:*:0:root,pst,tli,dennis,dock,pusateri,krishna,shermis

and no "wheel" entry in /etc/group, but +::: at the end, I get:

pst@base$ ./foo
root pst tli dennis dock pusateri krishna shermis -- done

which is correct... we match the wheel group out of YP.

However, I want to specify that getgr* should get wheel group membership
out of YP,  not have it work "by default".

I read the man page, and I think it wants me to put "+wheel" in my group file.
When I do that, I get:

pst@base$ ./foo
daemon  -- done

This is very bogus.  Daemon is certainly not in the wheel group, and the
other stuff is missing.

With an /etc/group entry for wheel reading:

+wheel:::

I get

pst@base$ ./foo
 -- done

showing no entries.

with

+wheel:*

the libc function core dumps. :-(  Yet another bug.