| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| * Ported by John George |
| */ |
| |
| /* |
| * Test setreuid() when executed by an unpriviledged user. |
| */ |
| |
| #include <errno.h> |
| #include <pwd.h> |
| #include <stdlib.h> |
| |
| #include "test.h" |
| #include "compat_16.h" |
| |
| #define FAILED 1 |
| |
| TCID_DEFINE(setreuid03); |
| |
| static int fail = -1; |
| static int pass; |
| static uid_t neg_one = -1; |
| |
| static struct passwd nobody, bin, root; |
| |
| /* |
| * The following structure contains all test data. Each structure in the array |
| * is used for a separate test. The tests are executed in the for loop below. |
| */ |
| |
| static struct test_data_t { |
| uid_t *real_uid; |
| uid_t *eff_uid; |
| int *exp_ret; |
| struct passwd *exp_real_usr; |
| struct passwd *exp_eff_usr; |
| char *test_msg; |
| } test_data[] = { |
| { |
| &nobody.pw_uid, &nobody.pw_uid, &pass, &nobody, &nobody, |
| "After setreuid(nobody, nobody),"}, { |
| &neg_one, &nobody.pw_uid, &pass, &nobody, &nobody, |
| "After setreuid(-1, nobody),"}, { |
| &nobody.pw_uid, &neg_one, &pass, &nobody, &nobody, |
| "After setreuid(nobody, -1),"}, { |
| &neg_one, &neg_one, &pass, &nobody, &nobody, "After setreuid(-1, -1),"}, |
| { |
| &neg_one, &root.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(-1, root),"}, { |
| &root.pw_uid, &neg_one, &fail, &nobody, &nobody, |
| "After setreuid(root, -1),"}, { |
| &root.pw_uid, &root.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(root, root),"}, { |
| &root.pw_uid, &nobody.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(root, nobody),"}, { |
| &root.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(root, nobody),"}, { |
| &bin.pw_uid, &root.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(bin, root),"}, { |
| &bin.pw_uid, &neg_one, &fail, &nobody, &nobody, |
| "After setreuid(bin, -1),"}, { |
| &bin.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(bin, bin,),"}, { |
| &bin.pw_uid, &nobody.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(bin, nobody),"}, { |
| &nobody.pw_uid, &bin.pw_uid, &fail, &nobody, &nobody, |
| "After setreuid(nobody, bin),"},}; |
| |
| int TST_TOTAL = sizeof(test_data) / sizeof(test_data[0]); |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void uid_verify(struct passwd *, struct passwd *, char *); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| int i; |
| |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) { |
| |
| /* Set the real or effective user id */ |
| TEST(SETREUID(cleanup, *test_data[i].real_uid, |
| *test_data[i].eff_uid)); |
| |
| if (TEST_RETURN == *test_data[i].exp_ret) { |
| if (TEST_RETURN == neg_one) { |
| if (TEST_ERRNO != EPERM) { |
| tst_resm(TFAIL, |
| "setreuid(%d, %d) " |
| "did not set errno " |
| "value as expected.", |
| *test_data[i].real_uid, |
| *test_data[i].eff_uid); |
| continue; |
| } |
| tst_resm(TPASS, "setreuid(%d, %d) " |
| "failed as expected.", |
| *test_data[i].real_uid, |
| *test_data[i].eff_uid); |
| } else { |
| tst_resm(TPASS, "setreuid(%d, %d) " |
| "succeeded as expected.", |
| *test_data[i].real_uid, |
| *test_data[i].eff_uid); |
| } |
| } else { |
| tst_resm(TFAIL, "setreuid(%d, %d) " |
| "did not return as expected.", |
| *test_data[i].real_uid, |
| *test_data[i].eff_uid); |
| } |
| |
| if (TEST_RETURN == -1) { |
| } |
| uid_verify(test_data[i].exp_real_usr, |
| test_data[i].exp_eff_usr, |
| test_data[i].test_msg); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| if (getpwnam("nobody") == NULL) |
| tst_brkm(TBROK, NULL, "nobody must be a valid user."); |
| |
| if (getpwnam("bin") == NULL) |
| tst_brkm(TBROK, NULL, "bin must be a valid user."); |
| |
| root = *(getpwnam("root")); |
| UID16_CHECK(root.pw_uid, setreuid, cleanup); |
| |
| nobody = *(getpwnam("nobody")); |
| UID16_CHECK(nobody.pw_uid, setreuid, cleanup); |
| |
| bin = *(getpwnam("bin")); |
| UID16_CHECK(bin.pw_uid, setreuid, cleanup); |
| |
| if (setuid(nobody.pw_uid) < 0) |
| tst_brkm(TBROK | TERRNO, NULL, "setuid() to nobody failed"); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| } |
| |
| static void uid_verify(struct passwd *ru, struct passwd *eu, char *when) |
| { |
| if ((getuid() != ru->pw_uid) || (geteuid() != eu->pw_uid)) { |
| tst_resm(TFAIL, "ERROR: %s real uid = %d; effective uid = %d", |
| when, getuid(), geteuid()); |
| tst_resm(TINFO, "Expected: real uid = %d; effective uid = %d", |
| ru->pw_uid, eu->pw_uid); |
| } |
| } |