tests/lib/libc/c063/t_fchownat.c

   1 /*      $NetBSD: t_fchownat.c,v 1.3 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_fchownat.c,v 1.3 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 #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(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         atf_tc_set_md_var(tc, "require.user", "root");
  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(fchownat_fdcwd);
  97 ATF_TC_HEAD(fchownat_fdcwd, tc)
  98 {
  99         atf_tc_set_md_var(tc, "descr",
 100                           "See that fchownat works with fd as AT_FDCWD");
 101         atf_tc_set_md_var(tc, "require.user", "root");
 102 }
 103 ATF_TC_BODY(fchownat_fdcwd, tc)
 104 {
 105         int fd;
 106         uid_t uid;
 107         gid_t gid;
 108         struct stat st;
 109
 110         ATF_REQUIRE(getuser(&uid, &gid) == 0);
 111         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 112         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 113         ATF_REQUIRE(close(fd) == 0);
 114
 115         ATF_REQUIRE(chdir(DIR) == 0);
 116         ATF_REQUIRE(fchownat(AT_FDCWD, BASEFILE, uid, gid, 0) == 0);
 117
 118         ATF_REQUIRE(stat(BASEFILE, &st) == 0);
 119         ATF_REQUIRE(st.st_uid == uid);
 120         ATF_REQUIRE(st.st_gid == gid);
 121 }
 122
 123 ATF_TC(fchownat_fdcwderr);
 124 ATF_TC_HEAD(fchownat_fdcwderr, tc)
 125 {
 126         atf_tc_set_md_var(tc, "descr",
 127                   "See that fchownat fails with fd as AT_FDCWD and bad path");
 128         atf_tc_set_md_var(tc, "require.user", "root");
 129 }
 130 ATF_TC_BODY(fchownat_fdcwderr, tc)
 131 {
 132         uid_t uid;
 133         gid_t gid;
 134
 135         ATF_REQUIRE(getuser(&uid, &gid) == 0);
 136         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 137         ATF_REQUIRE(fchownat(AT_FDCWD, FILEERR, uid, gid, 0) == -1);
 138 }
 139
 140 ATF_TC(fchownat_fderr1);
 141 ATF_TC_HEAD(fchownat_fderr1, tc)
 142 {
 143         atf_tc_set_md_var(tc, "descr", "See that fchownat fail with bad path");
 144         atf_tc_set_md_var(tc, "require.user", "root");
 145 }
 146 ATF_TC_BODY(fchownat_fderr1, tc)
 147 {
 148         int dfd;
 149         uid_t uid;
 150         gid_t gid;
 151
 152         ATF_REQUIRE(getuser(&uid, &gid) == 0);
 153         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 154         ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
 155         ATF_REQUIRE(fchownat(dfd, FILEERR, uid, gid, 0) == -1);
 156         ATF_REQUIRE(close(dfd) == 0);
 157 }
 158
 159 ATF_TC(fchownat_fderr2);
 160 ATF_TC_HEAD(fchownat_fderr2, tc)
 161 {
 162         atf_tc_set_md_var(tc, "descr", "See that fchownat fails with bad fdat");
 163         atf_tc_set_md_var(tc, "require.user", "root");
 164 }
 165 ATF_TC_BODY(fchownat_fderr2, tc)
 166 {
 167         int dfd;
 168         int fd;
 169         char cwd[MAXPATHLEN];
 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((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 176         ATF_REQUIRE(close(fd) == 0);
 177
 178         ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1);
 179         ATF_REQUIRE(fchownat(dfd, BASEFILE, uid, gid, 0) == -1);
 180         ATF_REQUIRE(close(dfd) == 0);
 181 }
 182
 183 ATF_TC(fchownat_fderr3);
 184 ATF_TC_HEAD(fchownat_fderr3, tc)
 185 {
 186         atf_tc_set_md_var(tc, "descr", "See that fchownat fails with fd as -1");
 187         atf_tc_set_md_var(tc, "require.user", "root");
 188 }
 189 ATF_TC_BODY(fchownat_fderr3, tc)
 190 {
 191         int fd;
 192         uid_t uid;
 193         gid_t gid;
 194
 195         ATF_REQUIRE(getuser(&uid, &gid) == 0);
 196         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 197         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 198         ATF_REQUIRE(close(fd) == 0);
 199
 200         ATF_REQUIRE(fchownat(-1, FILE, uid, gid, 0) == -1);
 201 }
 202
 203 ATF_TC(fchownat_fdlink);
 204 ATF_TC_HEAD(fchownat_fdlink, tc)
 205 {
 206         atf_tc_set_md_var(tc, "descr", "See that fchownat works on symlink");
 207         atf_tc_set_md_var(tc, "require.user", "root");
 208 }
 209 ATF_TC_BODY(fchownat_fdlink, tc)
 210 {
 211         int dfd;
 212         uid_t uid;
 213         gid_t gid;
 214         struct stat st;
 215
 216         ATF_REQUIRE(getuser(&uid, &gid) == 0);
 217         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 218         ATF_REQUIRE(symlink(FILE, LINK) == 0); /* Target does not exists */
 219
 220         ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
 221
 222         ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid, 0) == -1);
 223         ATF_REQUIRE(errno == ENOENT);
 224
 225         ATF_REQUIRE(fchownat(dfd, BASELINK, uid, gid,
 226             AT_SYMLINK_NOFOLLOW) == 0);
 227
 228         ATF_REQUIRE(close(dfd) == 0);
 229
 230         ATF_REQUIRE(lstat(LINK, &st) == 0);
 231         ATF_REQUIRE(st.st_uid == uid);
 232         ATF_REQUIRE(st.st_gid == gid);
 233 }
 234
 235 ATF_TP_ADD_TCS(tp)
 236 {
 237
 238         ATF_TP_ADD_TC(tp, fchownat_fd);
 239         ATF_TP_ADD_TC(tp, fchownat_fdcwd);
 240         ATF_TP_ADD_TC(tp, fchownat_fdcwderr);
 241         ATF_TP_ADD_TC(tp, fchownat_fderr1);
 242         ATF_TP_ADD_TC(tp, fchownat_fderr2);
 243         ATF_TP_ADD_TC(tp, fchownat_fderr3);
 244         ATF_TP_ADD_TC(tp, fchownat_fdlink);
 245
 246         return atf_no_error();
 247 }