text: /*	$NetBSD: getmntinfo.c,v 1.7 1997/07/21 14:07:09 jtc Exp $	*/
  
  /*
   * Copyright (c) 1989, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  #if defined(LIBC_SCCS) && !defined(lint)
  #if 0
  static char sccsid[] = "@(#)getmntinfo.c	8.1 (Berkeley) 6/4/93";
  #else
  __RCSID("$NetBSD: getmntinfo.c,v 1.7 1997/07/21 14:07:09 jtc Exp $");
  #endif
  #endif /* LIBC_SCCS and not lint */
  
  #include "namespace.h"
  #include <sys/param.h>
  #include <sys/ucred.h>
  #include <sys/mount.h>
  #include <stdlib.h>
  
  #ifdef __weak_alias
  __weak_alias(getmntinfo,_getmntinfo);
  #endif
  
  /*
   * Return information about mounted filesystems.
   */
  int
  getmntinfo(mntbufp, flags)
  	struct statfs **mntbufp;
  	int flags;
  {
  	static struct statfs *mntbuf;
  	static int mntsize;
  	static long bufsize;
  
  	if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0)
  		return (0);
  	if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
  		return (0);
  	while (bufsize <= mntsize * sizeof(struct statfs)) {
  		if (mntbuf)
  			free(mntbuf);
  		bufsize = (mntsize + 1) * sizeof(struct statfs);
  		if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0)
  			return (0);
  		if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
  			return (0);
  	}
  	*mntbufp = mntbuf;
  	return (mntsize);
  }
  