1 /* $NetBSD: t_dir.c,v 1.3 2011/06/11 18:03:18 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); 43 44 ATF_TC_HEAD(seekdir, tc) 45 { 46 47 atf_tc_set_md_var(tc, "descr", 48 "Check telldir(3) and seekdir(3) for correct behavior (PR/24324)"); 49 } 50 51 ATF_TC_BODY(seekdir, tc) 52 { 53 DIR *dp; 54 char *wasname; 55 struct dirent *entry; 56 long here; 57 58 mkdir("t", 0755); 59 creat("t/a", 0600); 60 creat("t/b", 0600); 61 creat("t/c", 0600); 62 63 dp = opendir("t"); 64 if ( dp == NULL) 65 atf_tc_fail("Could not open temp directory."); 66 67 /* skip two for . and .. */ 68 entry = readdir(dp); 69 entry = readdir(dp); 70 71 /* get first entry */ 72 entry = readdir(dp); 73 here = telldir(dp); 74 75 /* get second entry */ 76 entry = readdir(dp); 77 wasname = strdup(entry->d_name); 78 if (wasname == NULL) 79 atf_tc_fail("cannot allocate memory"); 80 81 /* get third entry */ 82 entry = readdir(dp); 83 84 /* try to return to the position after the first entry */ 85 seekdir(dp, here); 86 entry = readdir(dp); 87 88 if (entry == NULL) 89 atf_tc_fail("entry 1 not found"); 90 if (strcmp(entry->d_name, wasname) != 0) 91 atf_tc_fail("1st seekdir found wrong name"); 92 93 /* try again, and throw in a telldir() for good measure */ 94 seekdir(dp, here); 95 here = telldir(dp); 96 entry = readdir(dp); 97 98 if (entry == NULL) 99 atf_tc_fail("entry 2 not found"); 100 if (strcmp(entry->d_name, wasname) != 0) 101 atf_tc_fail("2nd seekdir found wrong name"); 102 103 /* One more time, to make sure that telldir() doesn't affect result */ 104 seekdir(dp, here); 105 entry = readdir(dp); 106 107 if (entry == NULL) 108 atf_tc_fail("entry 3 not found"); 109 if (strcmp(entry->d_name, wasname) != 0) 110 atf_tc_fail("3rd seekdir found wrong name"); 111 112 closedir(dp); 113 } 114 115 ATF_TC(telldir_leak); 116 117 ATF_TC_HEAD(telldir_leak, tc) 118 { 119 120 atf_tc_set_md_var(tc, "descr", 121 "Check telldir(3) for memory leakage (PR/24324)"); 122 } 123 124 ATF_TC_BODY(telldir_leak, tc) 125 { 126 DIR *dp; 127 long loc; 128 char *memused; 129 int i; 130 int oktouse = 4096; 131 132 dp = opendir("."); 133 if (dp == NULL) 134 atf_tc_fail("Could not open current directory"); 135 136 loc = telldir(dp); 137 memused = sbrk(0); 138 closedir(dp); 139 140 for (i = 0; i < 1000; i++) { 141 dp = opendir("."); 142 if (dp == NULL) 143 atf_tc_fail("Could not open current directory"); 144 145 loc = telldir(dp); 146 closedir(dp); 147 148 if ((char *)sbrk(0) - memused > oktouse) { 149 (void)printf("Used %td extra bytes for %d telldir " 150 "calls", ((char *)sbrk(0) - memused), i); 151 oktouse = (char *)sbrk(0) - memused; 152 } 153 } 154 if (oktouse > 4096) { 155 atf_tc_fail("Failure: leaked %d bytes", oktouse); 156 } else { 157 (void)printf("OK: used %td bytes\n", (char *)(sbrk(0))-memused); 158 } 159 } 160 161 ATF_TP_ADD_TCS(tp) 162 { 163 164 ATF_TP_ADD_TC(tp, seekdir); 165 ATF_TP_ADD_TC(tp, telldir_leak); 166 167 return atf_no_error(); 168 } 169