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54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Utilities for reading/writing fstab, mtab, etc.
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Copyright (C) 1995-2017 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, see
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<http://www.gnu.org/licenses/>. */
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#include <mntent.h>
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#include <stdlib.h>
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#include <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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libc_freeres_ptr (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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