1*11be35a1SLionel Sambuc /* $NetBSD: getmntinfo.c,v 1.1 2010/07/26 15:53:00 pooka Exp $ */
2*11be35a1SLionel Sambuc
3*11be35a1SLionel Sambuc /*
4*11be35a1SLionel Sambuc * Copyright (c) 1989, 1993
5*11be35a1SLionel Sambuc * The Regents of the University of California. All rights reserved.
6*11be35a1SLionel Sambuc *
7*11be35a1SLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*11be35a1SLionel Sambuc * modification, are permitted provided that the following conditions
9*11be35a1SLionel Sambuc * are met:
10*11be35a1SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*11be35a1SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*11be35a1SLionel Sambuc * documentation and/or other materials provided with the distribution.
15*11be35a1SLionel Sambuc * 3. Neither the name of the University nor the names of its contributors
16*11be35a1SLionel Sambuc * may be used to endorse or promote products derived from this software
17*11be35a1SLionel Sambuc * without specific prior written permission.
18*11be35a1SLionel Sambuc *
19*11be35a1SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20*11be35a1SLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21*11be35a1SLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22*11be35a1SLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23*11be35a1SLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24*11be35a1SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25*11be35a1SLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26*11be35a1SLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27*11be35a1SLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28*11be35a1SLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29*11be35a1SLionel Sambuc * SUCH DAMAGE.
30*11be35a1SLionel Sambuc */
31*11be35a1SLionel Sambuc
32*11be35a1SLionel Sambuc #include <sys/cdefs.h>
33*11be35a1SLionel Sambuc #if defined(LIBC_SCCS) && !defined(lint)
34*11be35a1SLionel Sambuc #if 0
35*11be35a1SLionel Sambuc static char sccsid[] = "@(#)getmntinfo.c 8.1 (Berkeley) 6/4/93";
36*11be35a1SLionel Sambuc #else
37*11be35a1SLionel Sambuc __RCSID("$NetBSD: getmntinfo.c,v 1.1 2010/07/26 15:53:00 pooka Exp $");
38*11be35a1SLionel Sambuc #endif
39*11be35a1SLionel Sambuc #endif /* LIBC_SCCS and not lint */
40*11be35a1SLionel Sambuc
41*11be35a1SLionel Sambuc #include <sys/param.h>
42*11be35a1SLionel Sambuc #include <sys/ucred.h>
43*11be35a1SLionel Sambuc #include <sys/mount.h>
44*11be35a1SLionel Sambuc
45*11be35a1SLionel Sambuc #include <rump/rump.h>
46*11be35a1SLionel Sambuc #include <rump/rump_syscalls.h>
47*11be35a1SLionel Sambuc
48*11be35a1SLionel Sambuc #include <assert.h>
49*11be35a1SLionel Sambuc #include <errno.h>
50*11be35a1SLionel Sambuc #include <stdlib.h>
51*11be35a1SLionel Sambuc
52*11be35a1SLionel Sambuc #define getvfsstat(a,b,c) rump_sys_getvfsstat(a,b,c)
53*11be35a1SLionel Sambuc
54*11be35a1SLionel Sambuc /*
55*11be35a1SLionel Sambuc * Return information about mounted filesystems.
56*11be35a1SLionel Sambuc */
57*11be35a1SLionel Sambuc int
getmntinfo(mntbufp,flags)58*11be35a1SLionel Sambuc getmntinfo(mntbufp, flags)
59*11be35a1SLionel Sambuc struct statvfs **mntbufp;
60*11be35a1SLionel Sambuc int flags;
61*11be35a1SLionel Sambuc {
62*11be35a1SLionel Sambuc static struct statvfs *mntbuf;
63*11be35a1SLionel Sambuc static int mntsize;
64*11be35a1SLionel Sambuc static size_t bufsize;
65*11be35a1SLionel Sambuc
66*11be35a1SLionel Sambuc _DIAGASSERT(mntbufp != NULL);
67*11be35a1SLionel Sambuc
68*11be35a1SLionel Sambuc if (mntsize <= 0 &&
69*11be35a1SLionel Sambuc (mntsize = getvfsstat(NULL, (size_t)0, MNT_NOWAIT)) == -1)
70*11be35a1SLionel Sambuc return (0);
71*11be35a1SLionel Sambuc if (bufsize > 0 &&
72*11be35a1SLionel Sambuc (mntsize = getvfsstat(mntbuf, bufsize, flags)) == -1)
73*11be35a1SLionel Sambuc return (0);
74*11be35a1SLionel Sambuc while (bufsize <= mntsize * sizeof(struct statvfs)) {
75*11be35a1SLionel Sambuc if (mntbuf)
76*11be35a1SLionel Sambuc free(mntbuf);
77*11be35a1SLionel Sambuc bufsize = (mntsize + 1) * sizeof(struct statvfs);
78*11be35a1SLionel Sambuc if ((mntbuf = malloc(bufsize)) == NULL)
79*11be35a1SLionel Sambuc return (0);
80*11be35a1SLionel Sambuc if ((mntsize = getvfsstat(mntbuf, bufsize, flags)) == -1)
81*11be35a1SLionel Sambuc return (0);
82*11be35a1SLionel Sambuc }
83*11be35a1SLionel Sambuc *mntbufp = mntbuf;
84*11be35a1SLionel Sambuc return (mntsize);
85*11be35a1SLionel Sambuc }
86