1 /* $NetBSD: t_truncate.c,v 1.3 2017/01/13 20:03:51 christos 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_truncate.c,v 1.3 2017/01/13 20:03:51 christos 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 <stdio.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 static const char path[] = "truncate"; 45 static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 }; 46 47 ATF_TC_WITH_CLEANUP(ftruncate_basic); 48 ATF_TC_HEAD(ftruncate_basic, tc) 49 { 50 atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)"); 51 } 52 53 ATF_TC_BODY(ftruncate_basic, tc) 54 { 55 struct stat st; 56 size_t i; 57 int fd; 58 59 fd = open(path, O_RDWR | O_CREAT, 0600); 60 ATF_REQUIRE(fd >= 0); 61 62 for (i = 0; i < __arraycount(sizes); i++) { 63 64 (void)memset(&st, 0, sizeof(struct stat)); 65 66 ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0); 67 ATF_REQUIRE(fstat(fd, &st) == 0); 68 69 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]); 70 71 if (sizes[i] != (size_t)st.st_size) 72 atf_tc_fail("ftruncate(2) did not truncate"); 73 } 74 75 (void)close(fd); 76 (void)unlink(path); 77 } 78 79 ATF_TC_CLEANUP(ftruncate_basic, tc) 80 { 81 (void)unlink(path); 82 } 83 84 ATF_TC(ftruncate_err); 85 ATF_TC_HEAD(ftruncate_err, tc) 86 { 87 atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)"); 88 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 89 } 90 91 ATF_TC_BODY(ftruncate_err, tc) 92 { 93 int fd; 94 95 fd = open("/etc/passwd", O_RDONLY, 0400); 96 ATF_REQUIRE(fd >= 0); 97 98 errno = 0; 99 ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1); 100 101 errno = 0; 102 ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1); 103 104 (void)close(fd); 105 } 106 107 ATF_TC_WITH_CLEANUP(truncate_basic); 108 ATF_TC_HEAD(truncate_basic, tc) 109 { 110 atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)"); 111 } 112 113 ATF_TC_BODY(truncate_basic, tc) 114 { 115 struct stat st; 116 size_t i; 117 int fd; 118 119 fd = open(path, O_RDWR | O_CREAT, 0600); 120 ATF_REQUIRE(fd >= 0); 121 122 for (i = 0; i < __arraycount(sizes); i++) { 123 124 (void)memset(&st, 0, sizeof(struct stat)); 125 126 ATF_REQUIRE(truncate(path, sizes[i]) == 0); 127 ATF_REQUIRE(fstat(fd, &st) == 0); 128 129 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]); 130 131 if (sizes[i] != (size_t)st.st_size) 132 atf_tc_fail("truncate(2) did not truncate"); 133 } 134 135 (void)close(fd); 136 (void)unlink(path); 137 } 138 139 ATF_TC_CLEANUP(truncate_basic, tc) 140 { 141 (void)unlink(path); 142 } 143 144 ATF_TC(truncate_err); 145 ATF_TC_HEAD(truncate_err, tc) 146 { 147 atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)"); 148 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 149 } 150 151 ATF_TC_BODY(truncate_err, tc) 152 { 153 char buf[PATH_MAX]; 154 155 errno = 0; 156 ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1); 157 158 errno = 0; 159 ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1); 160 161 errno = 0; 162 ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1); 163 164 errno = 0; 165 snprintf(buf, sizeof(buf), "%s/truncate_test.root_owned", 166 atf_tc_get_config_var(tc, "srcdir")); 167 ATF_REQUIRE_ERRNO(EACCES, truncate(buf, 999) == -1); 168 } 169 170 ATF_TP_ADD_TCS(tp) 171 { 172 173 ATF_TP_ADD_TC(tp, ftruncate_basic); 174 ATF_TP_ADD_TC(tp, ftruncate_err); 175 ATF_TP_ADD_TC(tp, truncate_basic); 176 ATF_TP_ADD_TC(tp, truncate_err); 177 178 return atf_no_error(); 179 } 180