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 */
36 int
main(void)37 main(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