77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
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/* Utilities for reading/writing fstab, mtab, etc.
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Copyright (C) 1995, 1996, 1997, 2000 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <mntent.h>
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#include <stdlib.h>
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#include <libc-symbols.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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static int once;
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do {
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if (__pthread_once != NULL)
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__pthread_once (&once, allocate);
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else if (once == 0) {
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allocate ();
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once = !(0);
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}
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} while (0);
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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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free (getmntent_buffer);
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}
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text_set_element (__libc_subfreeres, free_mem);
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