getrlimit.c

来自「一个C源代码分析器」· C语言 代码 · 共 47 行

/* Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <ansidecl.h>
#include <sys/resource.h>
#include <errno.h>
#include <hurd.h>
#include <hurd/resource.h>

/* Put the soft and hard limits for RESOURCE in *RLIMITS.
   Returns 0 if successful, -1 if not (and sets errno).  */
int
DEFUN(getrlimit, (resource, rlimits),
      enum __rlimit_resource resource AND struct rlimit *rlimits)
{
  struct rlimit lim;

  if (rlimits == NULL || (unsigned int) resource >= RLIMIT_NLIMITS)
    {
      errno = EINVAL;
      return -1;
    }

  __mutex_lock (&_hurd_rlimit_lock);
  lim = _hurd_rlimits[resource];
  __mutex_unlock (&_hurd_rlimit_lock);

  *rlimits = lim;

  return 0;
}