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 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