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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [mntent.c] - Rev 816
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/* Utilities for reading/writing fstab, mtab, etc. Copyright (C) 1995, 1996, 1997, 2000 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <features.h> #include <mntent.h> #include <stdlib.h> #include <libc-symbols.h> #define _LIBC 1 #define NOT_IN_libc 1 #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'. */ 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; static int once; do { if (__pthread_once != NULL) __pthread_once (&once, allocate); else if (once == 0) { allocate (); once = !(0); } } while (0); 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); } /* Make sure the memory is freed if the programs ends while in memory-debugging mode and something actually was allocated. */ static void __attribute__ ((unused)) free_mem (void) { free (getmntent_buffer); } text_set_element (__libc_subfreeres, free_mem);
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