t_fchownat.c revision 1.1
1 /* $NetBSD: t_fchownat.c,v 1.1 2012/11/18 17:41:54 manu 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_fchownat.c,v 1.1 2012/11/18 17:41:54 manu Exp $"); 33 34 #include <atf-c.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <limits.h> 38 #include <paths.h> 39 #include <stdio.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <pwd.h> 43 #include <sys/param.h> 44 45 #define DIR "dir" 46 #define FILE "dir/fchownat" 47 #define BASEFILE "fchownat" 48 #define LINK "dir/symlink" 49 #define BASELINK "symlink" 50 #define FILEERR "dir/fchownaterr" 51 #define USER "nobody" 52 53 static int getuser(uid_t *, gid_t *); 54 55 static int getuser(uid_t *uid, gid_t *gid) 56 { 57 struct passwd *pw; 58 59 if ((pw = getpwnam(USER)) == NULL) 60 return -1; 61 62 *uid = pw->pw_uid; 63 *gid = pw->pw_gid; 64 65 return 0; 66 } 67 68 ATF_TC_WITH_CLEANUP(fchownat_fd); 69 ATF_TC_HEAD(fchownat_fd, tc) 70 { 71 atf_tc_set_md_var(tc, "descr", "See that fchownat works with fd"); 72 } 73 74 ATF_TC_BODY(fchownat_fd, tc) 75 { 76 int dfd; 77 int fd; 78 uid_t uid; 79 gid_t gid; 80 struct stat st; 81 82 ATF_REQUIRE(getuser(&uid, &gid) == 0); 83 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 84 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 85 ATF_REQUIRE(close(fd) == 0); 86 87 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 88 ATF_REQUIRE(fchownat(dfd, BASEFILE, uid, gid, 0) == 0); 89 ATF_REQUIRE(close(dfd) == 0); 90 91 ATF_REQUIRE(stat(FILE, &st) == 0); 92 ATF_REQUIRE(st.st_uid == uid); 93 ATF_REQUIRE(st.st_gid == gid); 94 } 95 96 ATF_TC_CLEANUP(fchownat_fd, tc) 97 { 98 (void)unlink(FILE); 99 (void)unlink(FILEERR); 100 (void)rmdir(DIR); 101 } 102 103 ATF_TC_WITH_CLEANUP(fchownat_fdcwd); 104 ATF_TC_HEAD(fchownat_fdcwd, tc) 105 { 106 atf_tc_set_md_var(tc, "descr", 107 "See that fchownat works with fd as AT_FDCWD"); 108 } 109 110 ATF_TC_BODY(fchownat_fdcwd, tc) 111 { 112 int fd; 113 uid_t uid; 114 gid_t gid; 115 struct stat st; 116 117 ATF_REQUIRE(getuser(&uid, &gid) == 0); 118 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 119 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 120 ATF_REQUIRE(close(fd) == 0); 121 122 ATF_REQUIRE(chdir(DIR) == 0); 123 ATF_REQUIRE(fchownat(AT_FDCWD, BASEFILE, uid, gid, 0) == 0); 124 125 ATF_REQUIRE(stat(BASEFILE, &st) == 0); 126 ATF_REQUIRE(st.st_uid == uid); 127 ATF_REQUIRE(st.st_gid == gid); 128 } 129 130 ATF_TC_CLEANUP(fchownat_fdcwd, tc) 131 { 132 (void)unlink(FILE); 133 (void)unlink(FILEERR); 134 (void)rmdir(DIR); 135 } 136 137 ATF_TC_WITH_CLEANUP(fchownat_fdcwderr); 138 ATF_TC_HEAD(fchownat_fdcwderr, tc) 139 { 140 atf_tc_set_md_var(tc, "descr", 141 "See that fchownat fails with fd as AT_FDCWD and bad path"); 142 } 143 144 ATF_TC_BODY(fchownat_fdcwderr, tc) 145 { 146 uid_t uid; 147 gid_t gid; 148 149 ATF_REQUIRE(getuser(&uid, &gid) == 0); 150 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 151 ATF_REQUIRE(fchownat(AT_FDCWD, FILEERR, uid, gid, 0) == -1); 152 } 153 154 ATF_TC_CLEANUP(fchownat_fdcwderr, tc) 155 { 156 (void)unlink(FILE); 157 (void)unlink(FILEERR); 158 (void)rmdir(DIR); 159 } 160 161 ATF_TC_WITH_CLEANUP(fchownat_fderr1); 162 ATF_TC_HEAD(fchownat_fderr1, tc) 163 { 164 atf_tc_set_md_var(tc, "descr", "See that fchownat fail with bad path"); 165 } 166 167 ATF_TC_BODY(fchownat_fderr1, tc) 168 { 169 int dfd; 170 uid_t uid; 171 gid_t gid; 172 173 ATF_REQUIRE(getuser(&uid, &gid) == 0); 174 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 175 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 176 ATF_REQUIRE(fchownat(dfd, FILEERR, uid, gid, 0) == -1); 177 ATF_REQUIRE(close(dfd) == 0); 178 } 179 180 ATF_TC_CLEANUP(fchownat_fderr1, tc) 181 { 182 (void)unlink(FILE); 183 (void)unlink(FILEERR); 184 (void)rmdir(DIR); 185 } 186 187 ATF_TC_WITH_CLEANUP(fchownat_fderr2); 188 ATF_TC_HEAD(fchownat_fderr2, tc) 189 { 190 atf_tc_set_md_var(tc, "descr", "See that fchownat fails with bad fdat"); 191 } 192 193 ATF_TC_BODY(fchownat_fderr2, tc) 194 { 195 int dfd; 196 int fd; 197 char cwd[MAXPATHLEN]; 198 uid_t uid; 199 gid_t gid; 200 201 ATF_REQUIRE(getuser(&uid, &gid) == 0); 202 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 203 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 204 ATF_REQUIRE(close(fd) == 0); 205 206 ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1); 207 ATF_REQUIRE(fchownat(dfd, BASEFILE, uid, gid, 0) == -1); 208 ATF_REQUIRE(close(dfd) == 0); 209 } 210 211 ATF_TC_CLEANUP(fchownat_fderr2, tc) 212 { 213 (void)unlink(FILE); 214 (void)unlink(FILEERR); 215 (void)rmdir(DIR); 216 } 217 218 ATF_TC_WITH_CLEANUP(fchownat_fderr3); 219 ATF_TC_HEAD(fchownat_fderr3, tc) 220 { 221 atf_tc_set_md_var(tc, "descr", "See that fchownat fails with fd as -1"); 222 } 223 224 ATF_TC_BODY(fchownat_fderr3, tc) 225 { 226 int fd; 227 uid_t uid; 228 gid_t gid; 229 230 ATF_REQUIRE(getuser(&uid, &gid) == 0); 231 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 232 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 233 ATF_REQUIRE(close(fd) == 0); 234 235 ATF_REQUIRE(fchownat(-1, FILE, uid, gid, 0) == -1); 236 } 237 238 ATF_TC_CLEANUP(fchownat_fderr3, tc) 239 { 240 (void)unlink(FILE); 241 (void)unlink(FILEERR); 242 (void)rmdir(DIR); 243 } 244 245 ATF_TC_WITH_CLEANUP(fchownat_fdlink); 246 ATF_TC_HEAD(fchownat_fdlink, tc) 247 { 248 atf_tc_set_md_var(tc, "descr", "See that fchownat works on symlink"); 249 } 250 251 ATF_TC_BODY(fchownat_fdlink, tc) 252 { 253 int dfd; 254 uid_t uid; 255 gid_t gid; 256 struct stat st; 257 258 ATF_REQUIRE(getuser(&uid, &gid) == 0); 259 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 260 ATF_REQUIRE(symlink(FILE, LINK) == 0); /* Target does not exists */ 261 262 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 263 264 ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid, 0) == -1); 265 ATF_REQUIRE(errno == ENOENT); 266 267 ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid, 268 AT_SYMLINK_NOFOLLOW) == 0); 269 270 ATF_REQUIRE(close(dfd) == 0); 271 272 ATF_REQUIRE(lstat(LINK, &st) == 0); 273 ATF_REQUIRE(st.st_uid == uid); 274 ATF_REQUIRE(st.st_gid == gid); 275 } 276 277 ATF_TC_CLEANUP(fchownat_fdlink, tc) 278 { 279 (void)unlink(LINK); 280 (void)rmdir(DIR); 281 } 282 283 ATF_TP_ADD_TCS(tp) 284 { 285 286 ATF_TP_ADD_TC(tp, fchownat_fd); 287 ATF_TP_ADD_TC(tp, fchownat_fdcwd); 288 ATF_TP_ADD_TC(tp, fchownat_fdcwderr); 289 ATF_TP_ADD_TC(tp, fchownat_fderr1); 290 ATF_TP_ADD_TC(tp, fchownat_fderr2); 291 ATF_TP_ADD_TC(tp, fchownat_fderr3); 292 ATF_TP_ADD_TC(tp, fchownat_fdlink); 293 294 return atf_no_error(); 295 } 296
Indexes created Tue Sep 23 22:09:46 GMT 2025