| /* |
| * |
| * 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 |
| */ |
| |
| /* |
| * Test Name: getresgid03 |
| * |
| * Test Description: |
| * Verify that getresgid() will be successful to get the real, effective |
| * and saved user ids after calling process invokes setresgid() to change |
| * the effective gid to that of specified user. |
| * |
| * Expected Result: |
| * getresgid() should return with 0 value and the effective user id |
| * should match the egid of specified user, real/saved user ids should |
| * remain unchanged. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, |
| * Verify the Functionality of system call |
| * if successful, |
| * Issue Functionality-Pass message. |
| * Otherwise, |
| * Issue Functionality-Fail message. |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * Usage: <for command-line> |
| * getresgid03 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -f : Turn off functionality Testing. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * HISTORY |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS: |
| * This test should be run by 'super-user' (root) only. |
| * |
| */ |
| #define _GNU_SOURCE 1 |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <pwd.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| extern int getresgid(gid_t *, gid_t *, gid_t *); |
| extern int setresgid(gid_t, gid_t, gid_t); |
| |
| char *TCID = "getresgid03"; |
| int TST_TOTAL = 1; |
| gid_t pr_gid, pe_gid, ps_gid; /* calling process real/effective/saved gid */ |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| gid_t real_gid, /* real/eff./saved user id from getresgid() */ |
| eff_gid, sav_gid; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| } |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* |
| * Call getresgid() to get the real/effective/saved |
| * user id's of the calling process after |
| * setregid() in setup. |
| */ |
| TEST(getresgid(&real_gid, &eff_gid, &sav_gid)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL, "getresgid() Failed, errno=%d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| continue; |
| } |
| /* |
| * Verify the real/effective/saved gid |
| * values returned by getresgid with the |
| * expected values. |
| */ |
| if ((real_gid != pr_gid) || (eff_gid != pe_gid) || |
| (sav_gid != ps_gid)) { |
| tst_resm(TFAIL, "real:%d, effective:%d, " |
| "saved-user:%d ids differ", |
| real_gid, eff_gid, sav_gid); |
| } else { |
| tst_resm(TPASS, "Functionality of getresgid() " |
| "successful"); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| * Make sure test process gid is root. |
| * Get the real/effective/saved user id of the calling process. |
| * Get the user info. of test user "ltpuser1" from /etc/passwd file. |
| * Set the eff. user id of test process to that of "ltpuser1" user. |
| */ |
| void setup(void) |
| { |
| struct passwd *user_id; /* passwd struct for test user */ |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* Check that the test process id is super/root */ |
| if (geteuid() != 0) { |
| tst_brkm(TBROK, cleanup, "Must be super/root for this test!"); |
| } |
| |
| /* Real user-id of the calling process */ |
| pr_gid = getgid(); |
| |
| /* Saved user-id of the calling process. */ |
| ps_gid = getegid(); |
| |
| /* Get effective gid of "ltpuser1" user from passwd file */ |
| if ((user_id = getpwnam("nobody")) == NULL) { |
| tst_brkm(TBROK, cleanup, |
| "getpwnam(nobody) Failed, errno=%d", errno); |
| } |
| |
| /* Effective user-id of the test-user "ltpuser1" */ |
| pe_gid = user_id->pw_gid; |
| |
| /* |
| * Set the effective user-id of the process to that of |
| * test user "ltpuser1". |
| * The real/saved user id remains same as of caller. |
| */ |
| if (setresgid(-1, pe_gid, -1) < 0) { |
| tst_brkm(TBROK, cleanup, |
| "setresgid(-1, %d, -1) Fails, errno:%d : %s", |
| ps_gid, errno, strerror(errno)); |
| } |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* Reset the effective/saved gid of the calling process */ |
| if (setregid(-1, pr_gid) < 0) { |
| tst_brkm(TBROK, NULL, "resetting process effective gid failed"); |
| } |
| |
| } |