1 /* $NetBSD: t_fchmodat.c,v 1.7 2024/07/10 20:44:06 rillig Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus. 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_fchmodat.c,v 1.7 2024/07/10 20:44:06 rillig Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/stat.h> 36 #include <atf-c.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <limits.h> 40 #include <paths.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <unistd.h> 44 45 #define DIR "dir" 46 #define FILE "dir/fchmodat" 47 #define BASEFILE "fchmodat" 48 #define LINK "dir/symlink" 49 #define BASELINK "symlink" 50 #define FILEERR "dir/fchmodaterr" 51 52 #define modecheck(a, b) \ 53 ATF_REQUIRE_MSG(((a) & ALLPERMS) == (b), \ 54 "Incorrect mode found %#o != expected %#o", \ 55 ((a) & ALLPERMS), (b)); 56 57 ATF_TC(fchmodat_fd); 58 ATF_TC_HEAD(fchmodat_fd, tc) 59 { 60 atf_tc_set_md_var(tc, "descr", "See that fchmodat works with fd"); 61 } 62 ATF_TC_BODY(fchmodat_fd, tc) 63 { 64 int dfd; 65 int fd; 66 struct stat st; 67 68 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 69 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 70 ATF_REQUIRE(close(fd) == 0); 71 72 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 73 ATF_REQUIRE(fchmodat(dfd, BASEFILE, 0600, 0) == 0); 74 ATF_REQUIRE(close(dfd) == 0); 75 76 ATF_REQUIRE(stat(FILE, &st) == 0); 77 modecheck(st.st_mode, 0600); 78 } 79 80 ATF_TC(fchmodat_fdcwd); 81 ATF_TC_HEAD(fchmodat_fdcwd, tc) 82 { 83 atf_tc_set_md_var(tc, "descr", 84 "See that fchmodat works with fd as AT_FDCWD"); 85 } 86 ATF_TC_BODY(fchmodat_fdcwd, tc) 87 { 88 int fd; 89 struct stat st; 90 91 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 92 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 93 ATF_REQUIRE(close(fd) == 0); 94 95 ATF_REQUIRE(chdir(DIR) == 0); 96 ATF_REQUIRE(fchmodat(AT_FDCWD, BASEFILE, 0600, 0) == 0); 97 98 ATF_REQUIRE(stat(BASEFILE, &st) == 0); 99 modecheck(st.st_mode, 0600); 100 } 101 102 ATF_TC(fchmodat_fdcwderr); 103 ATF_TC_HEAD(fchmodat_fdcwderr, tc) 104 { 105 atf_tc_set_md_var(tc, "descr", 106 "See that fchmodat fails with fd as AT_FDCWD and bad path"); 107 } 108 ATF_TC_BODY(fchmodat_fdcwderr, tc) 109 { 110 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 111 ATF_REQUIRE(fchmodat(AT_FDCWD, FILEERR, 0600, 0) == -1); 112 } 113 114 ATF_TC(fchmodat_fderr1); 115 ATF_TC_HEAD(fchmodat_fderr1, tc) 116 { 117 atf_tc_set_md_var(tc, "descr", "See that fchmodat fail with bad path"); 118 } 119 ATF_TC_BODY(fchmodat_fderr1, tc) 120 { 121 int dfd; 122 123 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 124 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 125 ATF_REQUIRE(fchmodat(dfd, FILEERR, 0600, 0) == -1); 126 ATF_REQUIRE(close(dfd) == 0); 127 } 128 129 ATF_TC(fchmodat_fderr2); 130 ATF_TC_HEAD(fchmodat_fderr2, tc) 131 { 132 atf_tc_set_md_var(tc, "descr", "See that fchmodat fails with bad fdat"); 133 } 134 ATF_TC_BODY(fchmodat_fderr2, tc) 135 { 136 int dfd; 137 int fd; 138 char cwd[MAXPATHLEN]; 139 140 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 141 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 142 ATF_REQUIRE(close(fd) == 0); 143 144 ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1); 145 ATF_REQUIRE(fchmodat(dfd, BASEFILE, 0600, 0) == -1); 146 ATF_REQUIRE(close(dfd) == 0); 147 } 148 149 ATF_TC(fchmodat_fderr3); 150 ATF_TC_HEAD(fchmodat_fderr3, tc) 151 { 152 atf_tc_set_md_var(tc, "descr", "See that fchmodat fails with fd as -1"); 153 } 154 ATF_TC_BODY(fchmodat_fderr3, tc) 155 { 156 int fd; 157 158 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 159 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 160 ATF_REQUIRE(close(fd) == 0); 161 162 ATF_REQUIRE(fchmodat(-1, FILE, 0600, 0) == -1); 163 } 164 165 ATF_TC(fchmodat_fdlink); 166 ATF_TC_HEAD(fchmodat_fdlink, tc) 167 { 168 atf_tc_set_md_var(tc, "descr", "See that fchmodat works on symlink"); 169 } 170 ATF_TC_BODY(fchmodat_fdlink, tc) 171 { 172 int dfdlink; 173 struct stat st; 174 175 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 176 ATF_REQUIRE(symlink(FILE, LINK) == 0); 177 178 ATF_REQUIRE((dfdlink = open(DIR, O_RDONLY, 0)) != -1); 179 180 ATF_REQUIRE(fchmodat(dfdlink, BASELINK, 0600, 0) == -1); 181 ATF_REQUIRE(errno == ENOENT); 182 183 ATF_REQUIRE(fchmodat(dfdlink, BASELINK, 0600, AT_SYMLINK_NOFOLLOW) == 0); 184 185 ATF_REQUIRE(close(dfdlink) == 0); 186 187 ATF_REQUIRE(lstat(LINK, &st) == 0); 188 modecheck(st.st_mode, 0600); 189 } 190 191 ATF_TP_ADD_TCS(tp) 192 { 193 194 ATF_TP_ADD_TC(tp, fchmodat_fd); 195 ATF_TP_ADD_TC(tp, fchmodat_fdcwd); 196 ATF_TP_ADD_TC(tp, fchmodat_fdcwderr); 197 ATF_TP_ADD_TC(tp, fchmodat_fderr1); 198 ATF_TP_ADD_TC(tp, fchmodat_fderr2); 199 ATF_TP_ADD_TC(tp, fchmodat_fderr3); 200 ATF_TP_ADD_TC(tp, fchmodat_fdlink); 201 202 return atf_no_error(); 203 } 204