1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (C) 2015 STRATO AG.
24 */
25#include <err.h>
26#include <fcntl.h>
27#include <libzfs.h>
28#include <sys/resource.h>
29#include <sys/stat.h>
30#include <sys/types.h>
31#include <unistd.h>
32
33/*
34 * Check if libzfs works with more than 255 held file handles.
35 */
36int
37main(void)
38{
39	struct rlimit limit = {
40		.rlim_cur = 64 * 1024,
41		.rlim_max = 64 * 1024,
42	};
43	if (setrlimit(RLIMIT_NOFILE, &limit) != 0)
44		err(1, "setrlimit()");
45
46	int fd = open("/dev/null", O_RDONLY);
47	if (fd == -1)
48			err(1, "open()");
49	for (int i = 0; i < limit.rlim_cur / 2; ++i)
50		if (dup(fd) == -1)
51			err(1, "dup()");
52
53	libzfs_handle_t *h = libzfs_init();
54	if (h == NULL)
55		err(1, "libzfs_init()");
56
57	libzfs_fini(h);
58}
59