1 /* $NetBSD: t_dir.c,v 1.6 2013/10/19 17:45:00 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <atf-c.h> 30 31 #include <assert.h> 32 #include <dirent.h> 33 #include <err.h> 34 #include <fcntl.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <unistd.h> 39 40 #include <sys/stat.h> 41 42 ATF_TC(seekdir_basic); 43 ATF_TC_HEAD(seekdir_basic, tc) 44 { 45 46 atf_tc_set_md_var(tc, "descr", "Check telldir(3) and seekdir(3) " 47 "for correct behavior (PR lib/24324)"); 48 } 49 50 ATF_TC_BODY(seekdir_basic, tc) 51 { 52 DIR *dp; 53 char *wasname; 54 struct dirent *entry; 55 long here; 56 57 mkdir("t", 0755); 58 creat("t/a", 0600); 59 creat("t/b", 0600); 60 creat("t/c", 0600); 61 62 dp = opendir("t"); 63 if ( dp == NULL) 64 atf_tc_fail("Could not open temp directory."); 65 66 /* skip two for . and .. */ 67 entry = readdir(dp); 68 entry = readdir(dp); 69 70 /* get first entry */ 71 entry = readdir(dp); 72 here = telldir(dp); 73 74 /* get second entry */ 75 entry = readdir(dp); 76 wasname = strdup(entry->d_name); 77 if (wasname == NULL) 78 atf_tc_fail("cannot allocate memory"); 79 80 /* get third entry */ 81 entry = readdir(dp); 82 83 /* try to return to the position after the first entry */ 84 seekdir(dp, here); 85 entry = readdir(dp); 86 87 if (entry == NULL) 88 atf_tc_fail("entry 1 not found"); 89 if (strcmp(entry->d_name, wasname) != 0) 90 atf_tc_fail("1st seekdir found wrong name"); 91 92 /* try again, and throw in a telldir() for good measure */ 93 seekdir(dp, here); 94 here = telldir(dp); 95 entry = readdir(dp); 96 97 if (entry == NULL) 98 atf_tc_fail("entry 2 not found"); 99 if (strcmp(entry->d_name, wasname) != 0) 100 atf_tc_fail("2nd seekdir found wrong name"); 101 102 /* One more time, to make sure that telldir() doesn't affect result */ 103 seekdir(dp, here); 104 entry = readdir(dp); 105 106 if (entry == NULL) 107 atf_tc_fail("entry 3 not found"); 108 if (strcmp(entry->d_name, wasname) != 0) 109 atf_tc_fail("3rd seekdir found wrong name"); 110 111 closedir(dp); 112 } 113 114 /* There is no sbrk on AArch64 and RISC-V */ 115 #if !defined(__aarch64__) && !defined(__riscv__) 116 ATF_TC(telldir_leak); 117 ATF_TC_HEAD(telldir_leak, tc) 118 { 119 120 atf_tc_set_md_var(tc, "descr", 121 "Check telldir(3) for memory leakage (PR lib/24324)"); 122 } 123 124 ATF_TC_BODY(telldir_leak, tc) 125 { 126 DIR *dp; 127 char *memused; 128 int i; 129 int oktouse = 4096; 130 131 dp = opendir("."); 132 if (dp == NULL) 133 atf_tc_fail("Could not open current directory"); 134 135 (void)telldir(dp); 136 memused = sbrk(0); 137 closedir(dp); 138 139 for (i = 0; i < 1000; i++) { 140 dp = opendir("."); 141 if (dp == NULL) 142 atf_tc_fail("Could not open current directory"); 143 144 (void)telldir(dp); 145 closedir(dp); 146 147 if ((char *)sbrk(0) - memused > oktouse) { 148 (void)printf("Used %td extra bytes for %d telldir " 149 "calls", ((char *)sbrk(0) - memused), i); 150 oktouse = (char *)sbrk(0) - memused; 151 } 152 } 153 if (oktouse > 4096) { 154 atf_tc_fail("Failure: leaked %d bytes", oktouse); 155 } else { 156 (void)printf("OK: used %td bytes\n", (char *)(sbrk(0))-memused); 157 } 158 } 159 #endif 160 161 ATF_TP_ADD_TCS(tp) 162 { 163 164 ATF_TP_ADD_TC(tp, seekdir_basic); 165 #if !defined(__aarch64__) && !defined(__riscv__) 166 ATF_TP_ADD_TC(tp, telldir_leak); 167 #endif 168 169 return atf_no_error(); 170 } 171