plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 1 | /* |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 2 | * Copyright (c) International Business Machines Corp., 2001 |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 3 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 8 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 12 | * the GNU General Public License for more details. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 13 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 17 | * |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 18 | * Ported by John George |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 19 | */ |
| 20 | |
| 21 | /* |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 22 | * Test that root can change the real and effective uid to an |
| 23 | * unpriviledged user. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 24 | */ |
| 25 | |
| 26 | #include <errno.h> |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 27 | #include <stdlib.h> |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 28 | #include <pwd.h> |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 29 | #include <sys/wait.h> |
| 30 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 31 | #include "test.h" |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 32 | #include "compat_16.h" |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 33 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 34 | TCID_DEFINE(setreuid04); |
| 35 | |
| 36 | static uid_t neg_one = -1; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 37 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 38 | static struct passwd nobody, root; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 39 | |
| 40 | /* |
| 41 | * The following structure contains all test data. Each structure in the array |
| 42 | * is used for a separate test. The tests are executed in the for loop below. |
| 43 | */ |
| 44 | |
| 45 | struct test_data_t { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 46 | uid_t *real_uid; |
| 47 | uid_t *eff_uid; |
| 48 | struct passwd *exp_real_usr; |
| 49 | struct passwd *exp_eff_usr; |
| 50 | char *test_msg; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 51 | } test_data[] = { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 52 | { |
| 53 | &neg_one, &neg_one, &root, &root, "After setreuid(-1, nobody),"}, { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 54 | &nobody.pw_uid, &nobody.pw_uid, &nobody, &nobody, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 55 | "After setreuid(-1, -1),"},}; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 56 | |
| 57 | /*int TST_TOTAL = sizeof(test_data)/sizeof(test_data[0]);*/ |
| 58 | int TST_TOTAL = 2; |
| 59 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 60 | static void setup(void); |
| 61 | static void cleanup(void); |
| 62 | static void uid_verify(struct passwd *, struct passwd *, char *); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 63 | |
robbiew | fa451a1 | 2003-03-27 20:52:36 +0000 | [diff] [blame] | 64 | int main(int ac, char **av) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 65 | { |
| 66 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 67 | const char *msg; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 68 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 69 | if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 70 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 71 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 72 | setup(); |
| 73 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 74 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
Xiaoguang Wang | d84d901 | 2014-07-28 19:51:41 +0800 | [diff] [blame] | 75 | int i, pid; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 76 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 77 | tst_count = 0; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 78 | |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 79 | if ((pid = FORK_OR_VFORK()) == -1) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 80 | tst_brkm(TBROK, cleanup, "fork failed"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 81 | } else if (pid == 0) { /* child */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 82 | |
| 83 | for (i = 0; i < TST_TOTAL; i++) { |
| 84 | |
| 85 | /* Set the real or effective user id */ |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 86 | TEST(SETREUID(cleanup, *test_data[i].real_uid, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 87 | *test_data[i].eff_uid)); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 88 | |
| 89 | if (TEST_RETURN != -1) { |
| 90 | tst_resm(TPASS, "setreuid(%d, %d) " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 91 | "succeeded as expected.", |
| 92 | *test_data[i].real_uid, |
| 93 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 94 | } else { |
| 95 | tst_resm(TFAIL, "setreuid(%d, %d) " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 96 | "did not return as expected.", |
| 97 | *test_data[i].real_uid, |
| 98 | *test_data[i].eff_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Cyril Hrubis | e38b961 | 2014-06-02 17:20:57 +0200 | [diff] [blame] | 101 | uid_verify(test_data[i].exp_real_usr, |
| 102 | test_data[i].exp_eff_usr, |
| 103 | test_data[i].test_msg); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 104 | } |
Xiaoguang Wang | d84d901 | 2014-07-28 19:51:41 +0800 | [diff] [blame] | 105 | tst_exit(); |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 106 | } else { /* parent */ |
Xiaoguang Wang | d84d901 | 2014-07-28 19:51:41 +0800 | [diff] [blame] | 107 | tst_record_childstatus(cleanup, pid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 108 | } |
| 109 | } |
| 110 | cleanup(); |
Garrett Cooper | 7d0a4a5 | 2010-12-16 10:05:08 -0800 | [diff] [blame] | 111 | tst_exit(); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 112 | } |
| 113 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 114 | static void setup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 115 | { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 116 | tst_require_root(NULL); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 117 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 118 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 119 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 120 | if (getpwnam("nobody") == NULL) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 121 | tst_brkm(TBROK, NULL, "nobody must be a valid user."); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 122 | |
| 123 | root = *(getpwnam("root")); |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 124 | UID16_CHECK(root.pw_uid, setreuid, cleanup); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 125 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 126 | nobody = *(getpwnam("nobody")); |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 127 | UID16_CHECK(nobody.pw_uid, setreuid, cleanup); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 128 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 129 | TEST_PAUSE; |
| 130 | } |
| 131 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 132 | static void cleanup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 133 | { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 134 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 135 | |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 136 | static void uid_verify(struct passwd *ru, struct passwd *eu, char *when) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 137 | { |
| 138 | if ((getuid() != ru->pw_uid) || (geteuid() != eu->pw_uid)) { |
Stanislav Kholmanskikh | e0f8585 | 2013-10-21 11:25:15 +0400 | [diff] [blame] | 139 | tst_resm(TFAIL, "ERROR: %s real uid = %d; effective uid = %d", |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 140 | when, getuid(), geteuid()); |
| 141 | tst_resm(TINFO, "Expected: real uid = %d; effective uid = %d", |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 142 | ru->pw_uid, eu->pw_uid); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 143 | } |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 144 | } |