| /* |
| * |
| * 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 |
| */ |
| |
| /* |
| * NAME |
| * msgctl05.c |
| * |
| * DESCRIPTION |
| * msgctl05 - test for EPERM error |
| * |
| * ALGORITHM |
| * create a message queue as root |
| * fork a child process and change its ID to nobody |
| * loop if that option was specified |
| * try to remove the queue in the child process with msgctl() |
| * check the errno value |
| * issue a PASS message if we get EPERM |
| * otherwise, the tests fails |
| * issue a FAIL message |
| * break any remaining tests |
| * call cleanup |
| * |
| * USAGE: <for command-line> |
| * msgctl05 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -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 |
| * 03/2001 - Written by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * The test must be run as root. |
| * There must be a nobody ID installed on the system. |
| */ |
| |
| #include <string.h> |
| #include <pwd.h> |
| #include <sys/wait.h> |
| |
| #include "test.h" |
| |
| #include "ipcmsg.h" |
| |
| char *TCID = "msgctl05"; |
| int TST_TOTAL = 1; |
| |
| int msg_q_1 = -1; /* The message queue id created in setup */ |
| uid_t ltp_uid; /* The user ID for a non root user */ |
| char *ltp_user = "nobody"; /* A non root user */ |
| |
| struct msqid_ds q_buf; |
| |
| int main(int ac, char **av) |
| { |
| const char *msg; |
| pid_t pid; |
| void do_child(void); |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); /* global setup */ |
| |
| if ((pid = FORK_OR_VFORK()) == -1) { |
| tst_brkm(TBROK, cleanup, "could not fork"); |
| } |
| |
| if (pid == 0) { /* child */ |
| /* set the user ID of the child to nobody */ |
| if (setuid(ltp_uid) == -1) { |
| tst_resm(TBROK, "setuid() failed"); |
| exit(1); |
| } |
| |
| do_child(); |
| } else { /* parent */ |
| if (waitpid(pid, NULL, 0) == -1) { |
| tst_resm(TBROK | TERRNO, "waitpid() failed"); |
| } |
| |
| /* if it exists, remove the message queue */ |
| rm_queue(msg_q_1); |
| |
| tst_rmdir(); |
| } |
| |
| cleanup(); |
| /**NOT REACHED**/ |
| tst_exit(); |
| } |
| |
| /* |
| * do_child - make the TEST call as the child process |
| */ |
| void do_child(void) |
| { |
| int lc; |
| int i; |
| |
| /* The following loop checks looping state if -i option given */ |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset tst_count in case we are looping */ |
| tst_count = 0; |
| |
| /* loop through the test cases */ |
| |
| for (i = 0; i < TST_TOTAL; i++) { |
| TEST(msgctl(msg_q_1, IPC_RMID, NULL)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "msgget() call succeeded " |
| "on expected fail"); |
| continue; |
| } |
| |
| switch (TEST_ERRNO) { |
| case EPERM: |
| tst_resm(TPASS, "expected error = %d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| break; |
| default: |
| tst_resm(TFAIL, "call failed with unexpected " |
| "error - %d : %s", TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| break; |
| } |
| } |
| } |
| } |
| |
| /* |
| * setup() - performs all the ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* |
| * Create a temporary directory and cd into it. |
| * This helps to ensure that a unique msgkey is created. |
| * See ../lib/libipc.c for more information. |
| */ |
| tst_tmpdir(); |
| |
| msgkey = getipckey(); |
| |
| /* now we have a key, so let's create a message queue */ |
| if ((msg_q_1 = msgget(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW)) == -1) { |
| tst_brkm(TBROK, cleanup, "Can't create message queue #1"); |
| } |
| |
| /* get the user ID for a non root user */ |
| ltp_uid = getuserid(ltp_user); |
| } |
| |
| /* |
| * cleanup() - performs all the ONE TIME cleanup for this test at completion |
| * or premature exit. |
| */ |
| void cleanup(void) |
| { |
| |
| } |