1  /* Resource limits.
       2     Copyright (C) 1994-2023 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     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <hurd.h>
      20  #include <lock-intern.h>
      21  #include <hurd/resource.h>
      22  #include "set-hooks.h"
      23  
      24  /* This must be given an initializer, or the a.out linking rules will
      25     not include the entire file when this symbol is referenced. */
      26  struct rlimit _hurd_rlimits[RLIM_NLIMITS] = { { 0, }, };
      27  
      28  /* This must be initialized data for the same reason as above, but this is
      29     intentionally initialized to a bogus value to emphasize the point that
      30     mutex_init is still required below just in case of unexec.  */
      31  struct mutex _hurd_rlimit_lock = { SPIN_LOCK_INITIALIZER, };
      32  
      33  static void attribute_used_retain
      34  init_rlimit (void)
      35  {
      36    int i;
      37  
      38    __mutex_init (&_hurd_rlimit_lock);
      39  
      40    for (i = 0; i < RLIM_NLIMITS; ++i)
      41      {
      42        if (_hurd_rlimits[i].rlim_max == 0)
      43  	_hurd_rlimits[i].rlim_max = RLIM_INFINITY;
      44        if (_hurd_rlimits[i].rlim_cur == 0)
      45  #define I(lim, val) case RLIMIT_##lim: _hurd_rlimits[i].rlim_cur = (val); break
      46  	switch (i)
      47  	  {
      48  	    I (NOFILE, 1024);	/* Linux 2.2.12 uses this initial value.  */
      49  
      50  	  default:
      51  	    _hurd_rlimits[i].rlim_cur = _hurd_rlimits[i].rlim_max;
      52  	    break;
      53  	  }
      54  #undef	I
      55      }
      56  }
      57  SET_RELHOOK (_hurd_preinit_hook, init_rlimit);