1 /* $NetBSD: t_unlink.c,v 1.2 2014/04/21 18:05:17 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jukka Ruohonen. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_unlink.c,v 1.2 2014/04/21 18:05:17 martin Exp $"); 33 34 #include <sys/stat.h> 35 36 #include <atf-c.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <limits.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 static char path[] = "unlink"; 44 45 ATF_TC_WITH_CLEANUP(unlink_basic); 46 ATF_TC_HEAD(unlink_basic, tc) 47 { 48 atf_tc_set_md_var(tc, "descr", "A basic test of unlink(2)"); 49 } 50 51 ATF_TC_BODY(unlink_basic, tc) 52 { 53 const size_t n = 512; 54 size_t i; 55 int fd; 56 57 for (i = 0; i < n; i++) { 58 59 fd = open(path, O_RDWR | O_CREAT, 0666); 60 61 ATF_REQUIRE(fd != -1); 62 ATF_REQUIRE(close(fd) == 0); 63 ATF_REQUIRE(unlink(path) == 0); 64 65 errno = 0; 66 ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1); 67 } 68 } 69 70 ATF_TC_CLEANUP(unlink_basic, tc) 71 { 72 (void)unlink(path); 73 } 74 75 ATF_TC_WITH_CLEANUP(unlink_err); 76 ATF_TC_HEAD(unlink_err, tc) 77 { 78 atf_tc_set_md_var(tc, "descr", "Test error conditions of unlink(2)"); 79 } 80 81 ATF_TC_BODY(unlink_err, tc) 82 { 83 char buf[PATH_MAX + 1]; 84 85 (void)memset(buf, 'x', sizeof(buf)); 86 87 errno = 0; 88 ATF_REQUIRE_ERRNO(EBUSY, unlink("/") == -1); 89 90 errno = 0; 91 ATF_REQUIRE_ERRNO(ENAMETOOLONG, unlink(buf) == -1); 92 93 errno = 0; 94 ATF_REQUIRE_ERRNO(ENOENT, unlink("/a/b/c/d/e/f/g/h/i/j/k/l/m") == -1); 95 } 96 97 ATF_TC_CLEANUP(unlink_err, tc) 98 { 99 (void)unlink(path); 100 } 101 102 ATF_TC_WITH_CLEANUP(unlink_fifo); 103 ATF_TC_HEAD(unlink_fifo, tc) 104 { 105 atf_tc_set_md_var(tc, "descr", "Test unlink(2) for a FIFO"); 106 } 107 108 ATF_TC_BODY(unlink_fifo, tc) 109 { 110 111 ATF_REQUIRE(mkfifo(path, 0666) == 0); 112 ATF_REQUIRE(unlink(path) == 0); 113 114 errno = 0; 115 ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1); 116 } 117 118 ATF_TC_CLEANUP(unlink_fifo, tc) 119 { 120 (void)unlink(path); 121 } 122 123 ATF_TC_WITH_CLEANUP(unlink_perm); 124 ATF_TC_HEAD(unlink_perm, tc) 125 { 126 atf_tc_set_md_var(tc, "descr", "Test permissions with unlink(2)"); 127 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 128 } 129 130 ATF_TC_BODY(unlink_perm, tc) 131 { 132 int rv; 133 134 errno = 0; 135 rv = unlink("/etc"); 136 ATF_REQUIRE_MSG(rv == -1 && (errno == EACCES || errno == EPERM), 137 "unlinking a directory did not fail with EPERM or EACCESS; " 138 "unlink() returned %d, errno %d", rv, errno); 139 140 errno = 0; 141 ATF_REQUIRE_ERRNO(EACCES, unlink("/root/.profile") == -1); 142 } 143 144 ATF_TC_CLEANUP(unlink_perm, tc) 145 { 146 (void)unlink(path); 147 } 148 149 ATF_TP_ADD_TCS(tp) 150 { 151 152 ATF_TP_ADD_TC(tp, unlink_basic); 153 ATF_TP_ADD_TC(tp, unlink_err); 154 ATF_TP_ADD_TC(tp, unlink_fifo); 155 ATF_TP_ADD_TC(tp, unlink_perm); 156 157 return atf_no_error(); 158 } 159