tests/lib/libc/c063/t_o_search.c

   1 /*      $NetBSD: t_o_search.c,v 1.4 2013/03/17 04:46:06 jmmv 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_o_search.c,v 1.4 2013/03/17 04:46:06 jmmv 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 /*
  46  * dholland 20130112: disable tests that require O_SEARCH semantics
  47  * until a decision is reached about the semantics of O_SEARCH and a
  48  * non-broken implementation is available.
  49  */
  50 #if (O_MASK & O_SEARCH) != 0
  51 #define USE_O_SEARCH
  52 #endif
  53
  54 #define DIR "dir"
  55 #define FILE "dir/o_search"
  56 #define BASEFILE "o_search"
  57
  58
  59 ATF_TC(o_search_perm1);
  60 ATF_TC_HEAD(o_search_perm1, tc)
  61 {
  62         atf_tc_set_md_var(tc, "descr", "See that openat enforces search permission");
  63         atf_tc_set_md_var(tc, "require.user", "unprivileged");
  64 }
  65 ATF_TC_BODY(o_search_perm1, tc)
  66 {
  67         int dfd;
  68         int fd;
  69
  70         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
  71         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
  72         ATF_REQUIRE(close(fd) == 0);
  73
  74         ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
  75
  76         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
  77         ATF_REQUIRE(close(fd) == 0);
  78
  79         ATF_REQUIRE(fchmod(dfd, 644) == 0);
  80
  81         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
  82         ATF_REQUIRE(errno == EACCES);
  83
  84         ATF_REQUIRE(close(dfd) == 0);
  85 }
  86
  87 #ifdef USE_O_SEARCH
  88
  89 ATF_TC(o_search_root_flag1);
  90 ATF_TC_HEAD(o_search_root_flag1, tc)
  91 {
  92         atf_tc_set_md_var(tc, "descr", "See that root openat honours O_SEARCH");
  93         atf_tc_set_md_var(tc, "require.user", "root");
  94 }
  95 ATF_TC_BODY(o_search_root_flag1, tc)
  96 {
  97         int dfd;
  98         int fd;
  99
 100         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 101         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 102         ATF_REQUIRE(close(fd) == 0);
 103
 104         ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
 105
 106         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 107         ATF_REQUIRE(close(fd) == 0);
 108
 109         ATF_REQUIRE(fchmod(dfd, 644) == 0);
 110
 111         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 112         ATF_REQUIRE(close(fd) == 0);
 113
 114         ATF_REQUIRE(fchmod(dfd, 444) == 0);
 115
 116         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 117
 118         ATF_REQUIRE(close(dfd) == 0);
 119 }
 120
 121 ATF_TC(o_search_unpriv_flag1);
 122 ATF_TC_HEAD(o_search_unpriv_flag1, tc)
 123 {
 124         atf_tc_set_md_var(tc, "descr", "See that openat honours O_SEARCH");
 125         atf_tc_set_md_var(tc, "require.user", "unprivileged");
 126 }
 127 ATF_TC_BODY(o_search_unpriv_flag1, tc)
 128 {
 129         int dfd;
 130         int fd;
 131
 132         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 133         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 134         ATF_REQUIRE(close(fd) == 0);
 135
 136         ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
 137
 138         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 139         ATF_REQUIRE(close(fd) == 0);
 140
 141         ATF_REQUIRE(fchmod(dfd, 644) == 0);
 142
 143         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 144         ATF_REQUIRE(close(fd) == 0);
 145
 146         ATF_REQUIRE(fchmod(dfd, 444) == 0);
 147
 148         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
 149
 150         ATF_REQUIRE(close(dfd) == 0);
 151 }
 152
 153 #endif /* USE_O_SEARCH */
 154
 155 ATF_TC(o_search_perm2);
 156 ATF_TC_HEAD(o_search_perm2, tc)
 157 {
 158         atf_tc_set_md_var(tc, "descr", "See that faccessat enforces search permission");
 159         atf_tc_set_md_var(tc, "require.user", "unprivileged");
 160 }
 161 ATF_TC_BODY(o_search_perm2, tc)
 162 {
 163         int dfd;
 164         int fd;
 165         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 166         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 167         ATF_REQUIRE(close(fd) == 0);
 168
 169         ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
 170
 171         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 172
 173         ATF_REQUIRE(fchmod(dfd, 644) == 0);
 174
 175         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == -1);
 176         ATF_REQUIRE(errno == EACCES);
 177
 178         ATF_REQUIRE(close(dfd) == 0);
 179 }
 180
 181 #ifdef USE_O_SEARCH
 182
 183 ATF_TC(o_search_root_flag2);
 184 ATF_TC_HEAD(o_search_root_flag2, tc)
 185 {
 186         atf_tc_set_md_var(tc, "descr", "See that root fstatat honours O_SEARCH");
 187         atf_tc_set_md_var(tc, "require.user", "root");
 188 }
 189 ATF_TC_BODY(o_search_root_flag2, tc)
 190 {
 191         int dfd;
 192         int fd;
 193
 194         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 195         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 196         ATF_REQUIRE(close(fd) == 0);
 197
 198         ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
 199
 200         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 201
 202         ATF_REQUIRE(fchmod(dfd, 644) == 0);
 203
 204         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 205
 206         ATF_REQUIRE(fchmod(dfd, 444) == 0);
 207
 208         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 209
 210         ATF_REQUIRE(close(dfd) == 0);
 211 }
 212
 213 ATF_TC(o_search_unpriv_flag2);
 214 ATF_TC_HEAD(o_search_unpriv_flag2, tc)
 215 {
 216         atf_tc_set_md_var(tc, "descr", "See that fstatat honours O_SEARCH");
 217         atf_tc_set_md_var(tc, "require.user", "unprivileged");
 218 }
 219 ATF_TC_BODY(o_search_unpriv_flag2, tc)
 220 {
 221         int dfd;
 222         int fd;
 223
 224         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 225         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 226         ATF_REQUIRE(close(fd) == 0);
 227
 228         ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
 229
 230         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 231
 232         ATF_REQUIRE(fchmod(dfd, 644) == 0);
 233
 234         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 235
 236         ATF_REQUIRE(fchmod(dfd, 444) == 0);
 237
 238         ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
 239
 240         ATF_REQUIRE(close(dfd) == 0);
 241 }
 242
 243 #endif /* USE_O_SEARCH */
 244
 245
 246 ATF_TC(o_search_notdir);
 247 ATF_TC_HEAD(o_search_notdir, tc)
 248 {
 249         atf_tc_set_md_var(tc, "descr", "See that openat fails with non dir fd");
 250 }
 251 ATF_TC_BODY(o_search_notdir, tc)
 252 {
 253         int dfd;
 254         int fd;
 255
 256         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 257         ATF_REQUIRE((dfd = open(FILE, O_CREAT|O_RDWR|O_SEARCH, 0644)) != -1);
 258         ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
 259         ATF_REQUIRE(errno == ENOTDIR);
 260 }
 261
 262 ATF_TP_ADD_TCS(tp)
 263 {
 264
 265         ATF_TP_ADD_TC(tp, o_search_perm1);
 266 #ifdef USE_O_SEARCH
 267         ATF_TP_ADD_TC(tp, o_search_root_flag1);
 268         ATF_TP_ADD_TC(tp, o_search_unpriv_flag1);
 269 #endif
 270         ATF_TP_ADD_TC(tp, o_search_perm2);
 271 #ifdef USE_O_SEARCH
 272         ATF_TP_ADD_TC(tp, o_search_root_flag2);
 273         ATF_TP_ADD_TC(tp, o_search_unpriv_flag2);
 274 #endif
 275         ATF_TP_ADD_TC(tp, o_search_notdir);
 276
 277         return atf_no_error();
 278 }