posix/getgroups.c

   1 /* Copyright (C) 1991,1992,1995,1996,1997,2005 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23 #include <limits.h>
  24
  25
  26 /* If SIZE is zero, return the number of supplementary groups
  27    the calling process is in.  Otherwise, fill in the group IDs
  28    of its supplementary groups in LIST and return the number written.  */
  29 int
  30 __getgroups (size, list)
  31      int size;
  32      gid_t *list;
  33 {
  34 #if defined (NGROUPS_MAX) && NGROUPS_MAX == 0
  35   /* The system has no supplementary groups.  */
  36   return 0;
  37 #endif
  38
  39   __set_errno (ENOSYS);
  40   return -1;
  41 }
  42
  43 #if !(defined (NGROUPS_MAX) && NGROUPS_MAX == 0)
  44 stub_warning (getgroups);
  45 #endif
  46
  47 weak_alias (__getgroups, getgroups)
  48 #include <stub-tag.h>