1 /* $NetBSD: t_dir.c,v 1.2 2011/04/07 18:14:08 jruoho 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 79 /* get third entry */ 80 entry = readdir(dp); 81 82 /* try to return to the position after the first entry */ 83 seekdir(dp, here); 84 entry = readdir(dp); 85 86 if (strcmp(entry->d_name, wasname) != 0) 87 atf_tc_fail("1st seekdir found wrong name"); 88 89 /* try again, and throw in a telldir() for good measure */ 90 seekdir(dp, here); 91 here = telldir(dp); 92 entry = readdir(dp); 93 94 if (strcmp(entry->d_name, wasname) != 0) 95 atf_tc_fail("2nd seekdir found wrong name"); 96 97 /* One more time, to make sure that telldir() doesn't affect result */ 98 seekdir(dp, here); 99 entry = readdir(dp); 100 101 if (strcmp(entry->d_name, wasname) != 0) 102 atf_tc_fail("3rd seekdir found wrong name"); 103 104 closedir(dp); 105 } 106 107 ATF_TC(telldir_leak); 108 109 ATF_TC_HEAD(telldir_leak, tc) 110 { 111 112 atf_tc_set_md_var(tc, "descr", 113 "Check telldir(3) for memory leakage (PR/24324)"); 114 } 115 116 ATF_TC_BODY(telldir_leak, tc) 117 { 118 DIR *dp; 119 long loc; 120 char *memused; 121 int i; 122 int oktouse = 4096; 123 124 dp = opendir("."); 125 if (dp == NULL) 126 atf_tc_fail("Could not open current directory"); 127 128 loc = telldir(dp); 129 memused = sbrk(0); 130 closedir(dp); 131 132 for (i=0; i<1000; i++) { 133 dp = opendir("."); 134 if (dp == NULL) 135 atf_tc_fail("Could not open current directory"); 136 137 loc = telldir(dp); 138 closedir(dp); 139 140 if ((char *)(sbrk(0)) - memused > oktouse) { 141 (void)printf("Used %td extra bytes for %d telldir " 142 "calls", ((char *)(sbrk(0)) - memused), i); 143 oktouse = (char *)(sbrk(0)) - memused; 144 } 145 } 146 if (oktouse > 4096) { 147 atf_tc_fail("Failure: leaked %td bytes", oktouse); 148 } else { 149 (void)printf("OK: used %td bytes\n", (char *)(sbrk(0))-memused); 150 } 151 } 152 153 ATF_TP_ADD_TCS(tp) 154 { 155 156 ATF_TP_ADD_TC(tp, seekdir); 157 ATF_TP_ADD_TC(tp, telldir_leak); 158 159 return atf_no_error(); 160 } 161