/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getmntinfo.c	6.2 (Berkeley) 03/06/90";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#include <sys/mount.h>

/*
 * Return information about mounted filesystems.
 */
int
getmntinfo(mntbufp, flags)
	struct statfs **mntbufp;
	int flags;
{
	static struct statfs *mntbuf;
	static int mntsize, 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);
}