plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 3 | * Copyright (c) International Business Machines Corp., 2001 |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 4 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 9 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 14 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | * |
| 19 | * Ported by John George |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 20 | */ |
| 21 | |
| 22 | /* |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 23 | * Test setreuid() when executed by an unpriviledged user. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 24 | */ |
| 25 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 26 | #include <errno.h> |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 27 | #include <pwd.h> |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 28 | #include <stdlib.h> |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 29 | |
Garrett Cooper | e8530df | 2010-12-21 11:37:57 -0800 | [diff] [blame] | 30 | #include "test.h" |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 31 | #include "compat_16.h" |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 32 | |
| 33 | #define FAILED 1 |
| 34 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 35 | TCID_DEFINE(setreuid03); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 36 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 37 | static int fail = -1; |
| 38 | static int pass; |
| 39 | static uid_t neg_one = -1; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 40 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 41 | static struct passwd nobody, bin, root; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 42 | |
| 43 | /* |
| 44 | * The following structure contains all test data. Each structure in the array |
| 45 | * is used for a separate test. The tests are executed in the for loop below. |
| 46 | */ |
| 47 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 48 | static struct test_data_t { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 49 | uid_t *real_uid; |
| 50 | uid_t *eff_uid; |
| 51 | int *exp_ret; |
| 52 | struct passwd *exp_real_usr; |
| 53 | struct passwd *exp_eff_usr; |
| 54 | char *test_msg; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 55 | } test_data[] = { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 56 | { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 57 | &nobody.pw_uid, &nobody.pw_uid, &pass, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 58 | "After setreuid(nobody, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 59 | &neg_one, &nobody.pw_uid, &pass, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 60 | "After setreuid(-1, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 61 | &nobody.pw_uid, &neg_one, &pass, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 62 | "After setreuid(nobody, -1),"}, { |
| 63 | &neg_one, &neg_one, &pass, &nobody, &nobody, "After setreuid(-1, -1),"}, |
| 64 | { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 65 | &neg_one, &root.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 66 | "After setreuid(-1, root),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 67 | &root.pw_uid, &neg_one, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 68 | "After setreuid(root, -1),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 69 | &root.pw_uid, &root.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 70 | "After setreuid(root, root),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 71 | &root.pw_uid, &nobody.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 72 | "After setreuid(root, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 73 | &root.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 74 | "After setreuid(root, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 75 | &bin.pw_uid, &root.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 76 | "After setreuid(bin, root),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 77 | &bin.pw_uid, &neg_one, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 78 | "After setreuid(bin, -1),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 79 | &bin.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 80 | "After setreuid(bin, bin,),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 81 | &bin.pw_uid, &nobody.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 82 | "After setreuid(bin, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 83 | &nobody.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 84 | "After setreuid(nobody, bin),"},}; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 85 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 86 | int TST_TOTAL = sizeof(test_data) / sizeof(test_data[0]); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 87 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 88 | static void setup(void); |
| 89 | static void cleanup(void); |
| 90 | static void uid_verify(struct passwd *, struct passwd *, char *); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 91 | |
robbiew | fa451a1 | 2003-03-27 20:52:36 +0000 | [diff] [blame] | 92 | int main(int ac, char **av) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 93 | { |
| 94 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 95 | const char *msg; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 96 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 97 | if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 98 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 99 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 100 | setup(); |
| 101 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 102 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 103 | int i; |
| 104 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 105 | tst_count = 0; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 106 | |
| 107 | for (i = 0; i < TST_TOTAL; i++) { |
| 108 | |
| 109 | /* Set the real or effective user id */ |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 110 | TEST(SETREUID(cleanup, *test_data[i].real_uid, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 111 | *test_data[i].eff_uid)); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 112 | |
| 113 | if (TEST_RETURN == *test_data[i].exp_ret) { |
| 114 | if (TEST_RETURN == neg_one) { |
| 115 | if (TEST_ERRNO != EPERM) { |
| 116 | tst_resm(TFAIL, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 117 | "setreuid(%d, %d) " |
| 118 | "did not set errno " |
| 119 | "value as expected.", |
| 120 | *test_data[i].real_uid, |
| 121 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 122 | continue; |
| 123 | } |
| 124 | tst_resm(TPASS, "setreuid(%d, %d) " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 125 | "failed as expected.", |
| 126 | *test_data[i].real_uid, |
| 127 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 128 | } else { |
| 129 | tst_resm(TPASS, "setreuid(%d, %d) " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 130 | "succeeded as expected.", |
| 131 | *test_data[i].real_uid, |
| 132 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 133 | } |
| 134 | } else { |
| 135 | tst_resm(TFAIL, "setreuid(%d, %d) " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 136 | "did not return as expected.", |
| 137 | *test_data[i].real_uid, |
| 138 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | if (TEST_RETURN == -1) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 142 | } |
Cyril Hrubis | e38b961 | 2014-06-02 17:20:57 +0200 | [diff] [blame] | 143 | uid_verify(test_data[i].exp_real_usr, |
| 144 | test_data[i].exp_eff_usr, |
| 145 | test_data[i].test_msg); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 146 | } |
| 147 | } |
| 148 | |
| 149 | cleanup(); |
Garrett Cooper | 7d0a4a5 | 2010-12-16 10:05:08 -0800 | [diff] [blame] | 150 | tst_exit(); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 151 | } |
| 152 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 153 | static void setup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 154 | { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 155 | tst_require_root(NULL); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 156 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 157 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 158 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 159 | if (getpwnam("nobody") == NULL) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 160 | tst_brkm(TBROK, NULL, "nobody must be a valid user."); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 161 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 162 | if (getpwnam("bin") == NULL) |
plars | 38b1bc4 | 2001-09-05 17:15:30 +0000 | [diff] [blame] | 163 | tst_brkm(TBROK, NULL, "bin must be a valid user."); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 164 | |
| 165 | root = *(getpwnam("root")); |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 166 | UID16_CHECK(root.pw_uid, setreuid, cleanup); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 167 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 168 | nobody = *(getpwnam("nobody")); |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 169 | UID16_CHECK(nobody.pw_uid, setreuid, cleanup); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 170 | |
plars | 38b1bc4 | 2001-09-05 17:15:30 +0000 | [diff] [blame] | 171 | bin = *(getpwnam("bin")); |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 172 | UID16_CHECK(bin.pw_uid, setreuid, cleanup); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 173 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 174 | if (setuid(nobody.pw_uid) < 0) |
| 175 | tst_brkm(TBROK | TERRNO, NULL, "setuid() to nobody failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 176 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 177 | TEST_PAUSE; |
| 178 | } |
| 179 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 180 | static void cleanup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 181 | { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 182 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 183 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 184 | static void uid_verify(struct passwd *ru, struct passwd *eu, char *when) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 185 | { |
| 186 | if ((getuid() != ru->pw_uid) || (geteuid() != eu->pw_uid)) { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 187 | tst_resm(TFAIL, "ERROR: %s real uid = %d; effective uid = %d", |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 188 | when, getuid(), geteuid()); |
| 189 | tst_resm(TINFO, "Expected: real uid = %d; effective uid = %d", |
| 190 | ru->pw_uid, eu->pw_uid); |
| 191 | } |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 192 | } |