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