sysdeps/mach/hurd/bits/local_lim.h

   1 /* Minimum guaranteed maximum values for system limits.  Hurd version.
   2    Copyright (C) 1993-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* GNU has no arbitrary fixed limits on most of these things, so we
  20    don't define the macros.  Some things are unlimited.  Some are in
  21    fact limited but the limit is run-time dependent and fetched with
  22    `sysconf' or `pathconf'.  */
  23
  24 /* This one value is actually constrained by the `struct dirent'
  25    layout, in which the `d_namlen' member is only 8 bits wide.  */
  26
  27 #define NAME_MAX        255
  28
  29 /* POSIX.1 requires that we define NGROUPS_MAX (though none of the others
  30    is required).  GNU allows any number of supplementary groups,
  31    dynamically allocated.  So we pick a number which seems vaguely
  32    suitable, and `sysconf' will return a number at least as large.  */
  33
  34 #define NGROUPS_MAX     256