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/* Utilities for reading/writing fstab, mtab, etc.

   Copyright (C) 1995, 1996, 1997, 2000 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 Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#include <features.h>

#include <mntent.h>

#include <stdlib.h>

#include <libc-symbols.h>

#define  _LIBC 1

#define  NOT_IN_libc 1

#include <bits/libc-lock.h>

/* We don't want to allocate the static buffer all the time since it

   is not always used (in fact, rather infrequently).  Accept the

   extra cost of a `malloc'.  */

static char *getmntent_buffer;

/* This is the size of the buffer.  This is really big.  */

#define BUFFER_SIZE     4096

static void

allocate (void)

{

  getmntent_buffer = (char *) malloc (BUFFER_SIZE);

}

struct mntent *

getmntent (FILE *stream)

{

  static struct mntent m;

  static int once;

  do {

    if (__pthread_once != NULL)

      __pthread_once (&once, allocate);

    else if (once == 0) {

      allocate ();

      once = !(0);

    }

  } while (0);

  if (getmntent_buffer == NULL)

    /* If no core is available we don't have a chance to run the

       program successfully and so returning NULL is an acceptable

       result.  */

    return NULL;

  return __getmntent_r (stream, &m, getmntent_buffer, BUFFER_SIZE);

}

/* Make sure the memory is freed if the programs ends while in

   memory-debugging mode and something actually was allocated.  */

static void

__attribute__ ((unused))

free_mem (void)

{

  free (getmntent_buffer);

}

text_set_element (__libc_subfreeres, free_mem);