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 http://www.opensolaris.org/os/licensing.
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 <stdlib.h>
26 #include <stdio.h>
27 #include <unistd.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <fcntl.h>
31 #include <libzfs.h>
32 #include <sys/resource.h>
33 #include <errno.h>
34
35 /*
36 * Check if libzfs works with more than 255 held file handles.
37 */
38 /* ARGSUSED */
39 int
main(int argc,char ** argv)40 main(int argc, char **argv)
41 {
42 int i;
43 struct rlimit limit;
44 libzfs_handle_t *h;
45
46 limit.rlim_cur = 65535;
47 limit.rlim_max = 65535;
48
49 if (setrlimit(RLIMIT_NOFILE, &limit) != 0) {
50 (void) printf("many_fds: setrlimit() failed with errno=%d\n",
51 errno);
52 exit(1);
53 }
54
55 for (i = 0; i < 255; ++i) {
56 int fd = open("/dev/null", O_RDONLY);
57 if (fd == -1) {
58 (void) printf("open failed with errno=%d\n", errno);
59 return (1);
60 }
61 }
62
63 h = libzfs_init();
64
65 if (h != NULL) {
66 libzfs_fini(h);
67 return (0);
68 } else {
69 (void) printf("many_fds: libzfs_init() failed with errno=%d\n",
70 errno);
71 return (1);
72 }
73 }
74