1*02cdd248Schristos /* $NetBSD: compat___getmntinfo13.c,v 1.1 2019/09/22 22:59:38 christos Exp $ */
2*02cdd248Schristos
3*02cdd248Schristos /*-
4*02cdd248Schristos * Copyright (c) 2019 The NetBSD Foundation, Inc.
5*02cdd248Schristos * All rights reserved.
6*02cdd248Schristos *
7*02cdd248Schristos * This code is derived from software contributed to The NetBSD Foundation
8*02cdd248Schristos * by Christos Zoulas.
9*02cdd248Schristos *
10*02cdd248Schristos * Redistribution and use in source and binary forms, with or without
11*02cdd248Schristos * modification, are permitted provided that the following conditions
12*02cdd248Schristos * are met:
13*02cdd248Schristos * 1. Redistributions of source code must retain the above copyright
14*02cdd248Schristos * notice, this list of conditions and the following disclaimer.
15*02cdd248Schristos * 2. Redistributions in binary form must reproduce the above copyright
16*02cdd248Schristos * notice, this list of conditions and the following disclaimer in the
17*02cdd248Schristos * documentation and/or other materials provided with the distribution.
18*02cdd248Schristos *
19*02cdd248Schristos * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*02cdd248Schristos * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*02cdd248Schristos * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*02cdd248Schristos * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*02cdd248Schristos * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*02cdd248Schristos * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*02cdd248Schristos * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*02cdd248Schristos * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*02cdd248Schristos * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*02cdd248Schristos * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*02cdd248Schristos * POSSIBILITY OF SUCH DAMAGE.
30*02cdd248Schristos */
31*02cdd248Schristos
32*02cdd248Schristos #include <sys/cdefs.h>
33*02cdd248Schristos #if defined(LIBC_SCCS) && !defined(lint)
34*02cdd248Schristos __RCSID("$NetBSD: compat___getmntinfo13.c,v 1.1 2019/09/22 22:59:38 christos Exp $");
35*02cdd248Schristos #endif /* LIBC_SCCS and not lint */
36*02cdd248Schristos
37*02cdd248Schristos #define __LIBC12_SOURCE__
38*02cdd248Schristos
39*02cdd248Schristos #include "namespace.h"
40*02cdd248Schristos
41*02cdd248Schristos #include <sys/types.h>
42*02cdd248Schristos #include <sys/param.h>
43*02cdd248Schristos
44*02cdd248Schristos #include <assert.h>
45*02cdd248Schristos #include <compat/sys/statvfs.h>
46*02cdd248Schristos #include <string.h>
47*02cdd248Schristos #include <stdlib.h>
48*02cdd248Schristos
49*02cdd248Schristos __warn_references(__getmntinfo13,
50*02cdd248Schristos "warning: reference to obsolete __getmntinfo13(); use statvfs()")
51*02cdd248Schristos
__strong_alias(__getmntinfo13,__compat___getmntinfo13)52*02cdd248Schristos __strong_alias(__getmntinfo13, __compat___getmntinfo13)
53*02cdd248Schristos
54*02cdd248Schristos /*
55*02cdd248Schristos * Return information about mounted filesystems.
56*02cdd248Schristos */
57*02cdd248Schristos int
58*02cdd248Schristos __compat___getmntinfo13(struct statvfs90 **mntbufp, int flags)
59*02cdd248Schristos {
60*02cdd248Schristos static struct statvfs90 *mntbuf;
61*02cdd248Schristos static int mntsize;
62*02cdd248Schristos static size_t bufsize;
63*02cdd248Schristos
64*02cdd248Schristos _DIAGASSERT(mntbufp != NULL);
65*02cdd248Schristos
66*02cdd248Schristos if (mntsize <= 0 &&
67*02cdd248Schristos (mntsize = __compat_getvfsstat(NULL, 0L, MNT_NOWAIT)) == -1)
68*02cdd248Schristos return (0);
69*02cdd248Schristos if (bufsize > 0 &&
70*02cdd248Schristos (mntsize = __compat_getvfsstat(mntbuf, bufsize, flags)) == -1)
71*02cdd248Schristos return (0);
72*02cdd248Schristos while (bufsize <= mntsize * sizeof(struct statvfs90)) {
73*02cdd248Schristos if (mntbuf)
74*02cdd248Schristos free(mntbuf);
75*02cdd248Schristos bufsize = (mntsize + 1) * sizeof(struct statvfs90);
76*02cdd248Schristos if ((mntbuf = malloc(bufsize)) == NULL)
77*02cdd248Schristos return (0);
78*02cdd248Schristos if ((mntsize = __compat_getvfsstat(mntbuf, bufsize,
79*02cdd248Schristos flags)) == -1)
80*02cdd248Schristos return (0);
81*02cdd248Schristos }
82*02cdd248Schristos *mntbufp = mntbuf;
83*02cdd248Schristos return (mntsize);
84*02cdd248Schristos }
85