/* Utilities for reading/writing fstab, mtab, etc. Copyright (C) 1995, 1996, 1997, 2000, 2002 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, see <http://www.gnu.org/licenses/>. */ #include <mntent.h> #include <stdlib.h> #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'. */ libc_freeres_ptr (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; __libc_once_define (static, once); __libc_once (once, allocate); 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); }