| /* |
| * 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 setregid() when executed by a non-root user. |
| */ |
| |
| #include <errno.h> |
| #include <grp.h> |
| #include <stdlib.h> |
| #include <pwd.h> |
| #include <string.h> |
| #include <sys/wait.h> |
| |
| #include "test.h" |
| #include "compat_16.h" |
| |
| TCID_DEFINE(setregid03); |
| static int fail = -1; |
| static int pass; |
| static gid_t neg_one = -1; |
| |
| /* flag to tell parent if child passed or failed. */ |
| static int flag; |
| |
| struct group users, sys, root, bin; |
| struct passwd nobody; |
| /* |
| * 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. |
| */ |
| |
| struct test_data_t { |
| gid_t *real_gid; |
| gid_t *eff_gid; |
| int *exp_ret; |
| struct group *exp_real_usr; |
| struct group *exp_eff_usr; |
| char *test_msg; |
| } test_data[] = { |
| { |
| &sys.gr_gid, &bin.gr_gid, &pass, &sys, &bin, |
| "After setregid(sys, bin),"}, { |
| &neg_one, &sys.gr_gid, &pass, &sys, &sys, "After setregid(-1, sys)"}, |
| { |
| &neg_one, &bin.gr_gid, &pass, &sys, &bin, "After setregid(-1, bin),"}, |
| { |
| &bin.gr_gid, &neg_one, &pass, &bin, &bin, "After setregid(bin, -1),"}, |
| { |
| &neg_one, &neg_one, &pass, &bin, &bin, "After setregid(-1, -1),"}, { |
| &neg_one, &bin.gr_gid, &pass, &bin, &bin, "After setregid(-1, bin),"}, |
| { |
| &bin.gr_gid, &neg_one, &pass, &bin, &bin, "After setregid(bin, -1),"}, |
| { |
| &bin.gr_gid, &bin.gr_gid, &pass, &bin, &bin, |
| "After setregid(bin, bin),"}, { |
| &sys.gr_gid, &neg_one, &fail, &bin, &bin, "After setregid(sys, -1)"}, |
| { |
| &neg_one, &sys.gr_gid, &fail, &bin, &bin, "After setregid(-1, sys)"}, |
| { |
| &sys.gr_gid, &sys.gr_gid, &fail, &bin, &bin, |
| "After setregid(sys, sys)"},}; |
| |
| int TST_TOTAL = sizeof(test_data) / sizeof(test_data[0]); |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void gid_verify(struct group *ru, struct group *eu, char *when); |
| |
| 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++) { |
| pid_t pid; |
| int status, i; |
| |
| pass = 0; |
| flag = 0; |
| |
| tst_count = 0; |
| |
| /* set the appropriate ownership values */ |
| if (SETREGID(cleanup, sys.gr_gid, bin.gr_gid) == -1) |
| tst_brkm(TBROK, NULL, "Initial setregid failed"); |
| |
| if (seteuid(nobody.pw_uid) == -1) |
| tst_brkm(TBROK, NULL, "Initial seteuid failed"); |
| |
| if ((pid = FORK_OR_VFORK()) == -1) { |
| tst_brkm(TBROK, NULL, "fork failed"); |
| } else if (pid == 0) { /* child */ |
| for (i = 0; i < TST_TOTAL; i++) { |
| gid_t test_ret; |
| /* Set the real or effective group id */ |
| TEST(SETREGID(NULL, *test_data[i].real_gid, |
| *test_data[i].eff_gid)); |
| test_ret = TEST_RETURN; |
| |
| if (test_ret == *test_data[i].exp_ret) { |
| if (test_ret == neg_one) { |
| if (TEST_ERRNO != EPERM) { |
| tst_resm(TFAIL, |
| "setregid(%d, %d) " |
| "did not set errno " |
| "value as expected.", |
| *test_data |
| [i].real_gid, |
| *test_data |
| [i].eff_gid); |
| fail = -1; |
| continue; |
| } else { |
| tst_resm(TPASS, |
| "setregid(%d, %d) " |
| "failed as expected.", |
| *test_data |
| [i].real_gid, |
| *test_data |
| [i].eff_gid); |
| } |
| } else { |
| tst_resm(TPASS, |
| "setregid(%d, %d) " |
| "succeeded as expected.", |
| *test_data[i].real_gid, |
| *test_data[i].eff_gid); |
| } |
| } else { |
| tst_resm(TFAIL, "setregid(%d, %d) " |
| "did not return as expected.", |
| *test_data[i].real_gid, |
| *test_data[i].eff_gid); |
| flag = -1; |
| } |
| if (test_ret == -1) { |
| } |
| |
| gid_verify(test_data[i].exp_real_usr, |
| test_data[i].exp_eff_usr, |
| test_data[i].test_msg); |
| } |
| exit(flag); |
| } else { /* parent */ |
| waitpid(pid, &status, 0); |
| if (WEXITSTATUS(status) != 0) { |
| tst_resm(TFAIL, "test failed within " |
| "child process."); |
| } |
| } |
| } |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| struct group *junk; |
| |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| if (getpwnam("nobody") == NULL) |
| tst_brkm(TBROK, NULL, "nobody must be a valid user."); |
| nobody = *(getpwnam("nobody")); |
| |
| #define GET_GID(group) do { \ |
| junk = getgrnam(#group); \ |
| if (junk == NULL) { \ |
| tst_brkm(TBROK, NULL, "%s must be a valid group", #group); \ |
| } \ |
| GID16_CHECK(junk->gr_gid, setregid, NULL); \ |
| group = *(junk); \ |
| } while (0) |
| |
| GET_GID(users); |
| GET_GID(sys); |
| GET_GID(bin); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| } |
| |
| static void gid_verify(struct group *rg, struct group *eg, char *when) |
| { |
| if ((getgid() != rg->gr_gid) || (getegid() != eg->gr_gid)) { |
| tst_resm(TFAIL, "ERROR: %s real gid = %d; effective gid = %d", |
| when, getgid(), getegid()); |
| tst_resm(TINFO, "Expected: real gid = %d; effective gid = %d", |
| rg->gr_gid, eg->gr_gid); |
| flag = -1; |
| } else { |
| tst_resm(TPASS, "real or effective gid was modified as expected"); |
| } |
| } |