1/*-
2 * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include "namespace.h"
31#include <sys/param.h>
32#include "compat-ino64.h"
33#include <sys/errno.h>
34#include <sys/syscall.h>
35#include <stdlib.h>
36#include <unistd.h>
37
38#include "libc_private.h"
39
40int
41getfsstat(struct statfs *buf, long bufsize, int flags)
42{
43	struct freebsd11_statfs *statfs11 = NULL;
44	ssize_t len = 0;
45	int rv, i;
46
47	if (__getosreldate() >= INO64_FIRST)
48		return (__sys_getfsstat(buf, bufsize, flags));
49	if (buf != NULL) {
50		len = sizeof(struct freebsd11_statfs) *	/* Round down on purpose to avoid */
51		    (bufsize / sizeof(struct statfs));	/* overflow on translation.	  */
52		statfs11 = malloc(len);
53		if (statfs11 == NULL) {
54			errno = ENOMEM;
55			return (-1);
56		}
57	}
58	rv = syscall(SYS_freebsd11_getfsstat, statfs11, len, flags);
59	if (rv != -1 && buf != NULL) {
60		for (i = 0; i < rv; i++)
61			__statfs11_to_statfs(&statfs11[i], &buf[i]);
62	}
63	free(statfs11);
64	return (rv);
65}
66