59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/* Utilities for reading/writing fstab, mtab, etc.
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Copyright (C) 1995-2022 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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<https://www.gnu.org/licenses/>. */
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#include <mntent.h>
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#include <stdlib.h>
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#include <allocate_once.h>
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struct mntent_buffer
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{
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struct mntent m;
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char buffer[4096];
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};
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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). */
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libc_freeres_ptr (static void *mntent_buffer);
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static void *
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allocate (void *closure)
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{
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return malloc (sizeof (struct mntent_buffer));
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}
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static void
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deallocate (void *closure, void *ptr)
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{
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free (ptr);
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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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struct mntent_buffer *buffer = allocate_once (&mntent_buffer,
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allocate, deallocate, NULL);
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if (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, &buffer->m,
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buffer->buffer, sizeof (buffer->buffer));
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}
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