68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* Utilities for reading/writing fstab, mtab, etc.
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Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <mntent.h>
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#include <stdlib.h>
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#include <bits/libc-lock.h>
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/* We don't want to allocate the static buffer all the time since it
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is not always used (in fact, rather infrequently). Accept the
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extra cost of a `malloc'. */
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static char *getmntent_buffer;
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/* This is the size of the buffer. This is really big. */
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#define BUFFER_SIZE 4096
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static void
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allocate (void)
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{
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getmntent_buffer = (char *) malloc (BUFFER_SIZE);
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}
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struct mntent *
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getmntent (FILE *stream)
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{
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static struct mntent m;
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__libc_once_define (static, once);
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__libc_once (once, allocate);
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if (getmntent_buffer == NULL)
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/* If no core is available we don't have a chance to run the
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program successfully and so returning NULL is an acceptable
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result. */
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return NULL;
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return __getmntent_r (stream, &m, getmntent_buffer, BUFFER_SIZE);
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}
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/* Make sure the memory is freed if the programs ends while in
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memory-debugging mode and something actually was allocated. */
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static void
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__attribute__ ((unused))
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free_mem (void)
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{
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if (getmntent_buffer != NULL)
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free (getmntent_buffer);
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}
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text_set_element (__libc_subfreeres, free_mem);
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