🚀 go-pugleaf

   Date: 21 Sep 89 03:48:27 GMT
   From: fxgrp!news@AMES.ARC.NASA.GOV  (Steven Grady)
   Organization: FXDevelopment, Mountain View, CA
   Sender: bug-bash-request@prep.ai.mit.edu

   Does anyone know the correct configuration of the Makefile to get
   bash to compile on a pc/rt running AIX 2.2.1?  I tried using
   OS=SYSV (confused by the existence of sys/wait.h) and OS=Bsd
   with the bsd compatibility library (got confused by NGROUPS.
   I can probably get it compiled, but I wanted to check if anyone
   else had done so..

   BTW, on the PC/RT, NGROUPS (from /usr/include/grp.h) is 64*1024,
   which is a little bigger than on most bsd machines (16).  Perhaps
   the group_member() function should have some conditional cpp lines
   in there to try using a smaller size, if necessary.  (Who needs
   256k of data taken up for such a stupid function?)

Here is a version of group_member () (in execute_cmd.c) which should
solve your woes.

#ifndef SYSV
/* The number of groups (within 64) that this user is a member of. */
static int default_group_array_size = 0;
static int ngroups = 0;
static int *group_array = (int *)NULL;
#endif /* SYSV */

/* Return non-zero if GID is one that we have in our groups list. */
group_member (gid)
     int gid;
{
#ifdef SYSV
  return ((gid == getgid ()) || (gid == geteuid ()));
#else

  register int i;

  /* getgroups () returns the number of elements that it was able to
     place into the array.  We simply continue to call getgroups ()
     until the number of elements placed into the array is smaller than
     the physical size of the array. */

  while (ngroups == default_group_array_size)
    {
      default_group_array_size += 64;

      if (!group_array)
	group_array = (int *)xmalloc (default_group_array_size * sizeof (int));
      else
	group_array =
	  (int *)xrealloc (group_array,
			   default_group_array_size * sizeof (int));

      ngroups = getgroups (default_group_array_size, group_array);
    }

  /* In case of error, the user loses. */
  if (ngroups < 0)
    return (0);

  /* Search through the list looking for GID. */
  for (i = 0; i < ngroups; i++)
    if (gid == group_array[i])
      return (1);

  return (0);
#endif  /* SYSV */
}