11573Srgrimes/* 21573Srgrimes * Copyright (c) 1989, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 4. Neither the name of the University nor the names of its contributors 141573Srgrimes * may be used to endorse or promote products derived from this software 151573Srgrimes * without specific prior written permission. 161573Srgrimes * 171573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271573Srgrimes * SUCH DAMAGE. 281573Srgrimes */ 291573Srgrimes 301573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 311573Srgrimesstatic char sccsid[] = "@(#)getmntinfo.c 8.1 (Berkeley) 6/4/93"; 321573Srgrimes#endif /* LIBC_SCCS and not lint */ 3390039Sobrien#include <sys/cdefs.h> 3490039Sobrien__FBSDID("$FreeBSD$"); 351573Srgrimes 361573Srgrimes#include <sys/param.h> 371573Srgrimes#include <sys/ucred.h> 381573Srgrimes#include <sys/mount.h> 391573Srgrimes#include <stdlib.h> 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * Return information about mounted filesystems. 431573Srgrimes */ 441573Srgrimesint 451573Srgrimesgetmntinfo(mntbufp, flags) 461573Srgrimes struct statfs **mntbufp; 471573Srgrimes int flags; 481573Srgrimes{ 491573Srgrimes static struct statfs *mntbuf; 501573Srgrimes static int mntsize; 511573Srgrimes static long bufsize; 521573Srgrimes 531573Srgrimes if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0) 541573Srgrimes return (0); 551573Srgrimes if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 561573Srgrimes return (0); 571573Srgrimes while (bufsize <= mntsize * sizeof(struct statfs)) { 581573Srgrimes if (mntbuf) 591573Srgrimes free(mntbuf); 601573Srgrimes bufsize = (mntsize + 1) * sizeof(struct statfs); 611573Srgrimes if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0) 621573Srgrimes return (0); 631573Srgrimes if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 641573Srgrimes return (0); 651573Srgrimes } 661573Srgrimes *mntbufp = mntbuf; 671573Srgrimes return (mntsize); 681573Srgrimes} 69