1 /* $OpenBSD: t_unlink.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $ */ 2 /* $NetBSD: t_unlink.c,v 1.4 2017/01/14 20:55:26 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 2011 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jukka Ruohonen. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "macros.h" 34 35 #include <sys/cdefs.h> 36 __RCSID("$NetBSD: t_unlink.c,v 1.4 2017/01/14 20:55:26 christos Exp $"); 37 38 #include <sys/stat.h> 39 40 #include "atf-c.h" 41 #include <errno.h> 42 #include <fcntl.h> 43 #include <limits.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 static char path[] = "unlink"; 48 49 ATF_TC_WITH_CLEANUP(unlink_basic); 50 ATF_TC_HEAD(unlink_basic, tc) 51 { 52 atf_tc_set_md_var(tc, "descr", "A basic test of unlink(2)"); 53 } 54 55 ATF_TC_BODY(unlink_basic, tc) 56 { 57 const size_t n = 512; 58 size_t i; 59 int fd; 60 61 for (i = 0; i < n; i++) { 62 63 fd = open(path, O_RDWR | O_CREAT, 0666); 64 65 ATF_REQUIRE(fd != -1); 66 ATF_REQUIRE(close(fd) == 0); 67 ATF_REQUIRE(unlink(path) == 0); 68 69 errno = 0; 70 ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1); 71 } 72 } 73 74 ATF_TC_CLEANUP(unlink_basic, tc) 75 { 76 (void)unlink(path); 77 } 78 79 ATF_TC_WITH_CLEANUP(unlink_err); 80 ATF_TC_HEAD(unlink_err, tc) 81 { 82 atf_tc_set_md_var(tc, "descr", "Test error conditions of unlink(2)"); 83 } 84 85 ATF_TC_BODY(unlink_err, tc) 86 { 87 char buf[PATH_MAX + 1]; 88 89 (void)memset(buf, 'x', sizeof(buf)); 90 91 errno = 0; 92 ATF_REQUIRE_ERRNO(EBUSY, unlink("/") == -1); 93 94 errno = 0; 95 ATF_REQUIRE_ERRNO(ENAMETOOLONG, unlink(buf) == -1); 96 97 errno = 0; 98 ATF_REQUIRE_ERRNO(ENOENT, unlink("/a/b/c/d/e/f/g/h/i/j/k/l/m") == -1); 99 } 100 101 ATF_TC_CLEANUP(unlink_err, tc) 102 { 103 (void)unlink(path); 104 } 105 106 ATF_TC_WITH_CLEANUP(unlink_fifo); 107 ATF_TC_HEAD(unlink_fifo, tc) 108 { 109 atf_tc_set_md_var(tc, "descr", "Test unlink(2) for a FIFO"); 110 } 111 112 ATF_TC_BODY(unlink_fifo, tc) 113 { 114 115 ATF_REQUIRE(mkfifo(path, 0666) == 0); 116 ATF_REQUIRE(unlink(path) == 0); 117 118 errno = 0; 119 ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1); 120 } 121 122 ATF_TC_CLEANUP(unlink_fifo, tc) 123 { 124 (void)unlink(path); 125 } 126 127 ATF_TC_WITH_CLEANUP(unlink_perm); 128 ATF_TC_HEAD(unlink_perm, tc) 129 { 130 atf_tc_set_md_var(tc, "descr", "Test permissions with unlink(2)"); 131 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 132 } 133 134 ATF_TC_BODY(unlink_perm, tc) 135 { 136 int rv; 137 138 errno = 0; 139 rv = unlink("/etc"); 140 ATF_REQUIRE_MSG(rv == -1 && (errno == EACCES || errno == EPERM), 141 "unlinking a directory did not fail with EPERM or EACCESS; " 142 "unlink() returned %d, errno %d", rv, errno); 143 144 errno = 0; 145 ATF_REQUIRE_ERRNO(EACCES, unlink("/root/.profile") == -1); 146 } 147 148 ATF_TC_CLEANUP(unlink_perm, tc) 149 { 150 (void)unlink(path); 151 } 152 153 ATF_TP_ADD_TCS(tp) 154 { 155 156 ATF_TP_ADD_TC(tp, unlink_basic); 157 ATF_TP_ADD_TC(tp, unlink_err); 158 ATF_TP_ADD_TC(tp, unlink_fifo); 159 ATF_TP_ADD_TC(tp, unlink_perm); 160 161 return atf_no_error(); 162 } 163