| /* |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * NAME |
| * kill05.c |
| * |
| * DESCRIPTION |
| * Test case to check that kill() fails when passed a pid owned by another |
| * user. |
| * |
| * ALGORITHM |
| * call setup |
| * loop if the -i option was given |
| * setup a shared memory segment to for a flag which will notify |
| * ltpuser1's process that life is not worth living in a continuous loop. |
| * fork a child and set the euid to ltpuser1 |
| * set the parents euid to ltpuser2 |
| * execute the kill system call on ltpuser1's pid |
| * check the return value |
| * if return value is not -1 |
| * issue a FAIL message, break remaining tests and cleanup |
| * if we are doing functional testing |
| * if the errno was set to 1 (Operation not permitted) |
| * issue a PASS message |
| * otherwise |
| * issue a FAIL message |
| * call cleanup |
| * |
| * USAGE |
| * kill05 [-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 |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * 26/02/2008 Renaud Lottiaux (Renaud.Lottiaux@kerlabs.com) |
| * - Fix wrong return value check on shmat system call (leading to |
| * segfault in case of error with this syscall). |
| * - Fix deletion of IPC memory segment. Segment was not correctly |
| * deleted due to the change of uid during the test. |
| * |
| * RESTRICTIONS |
| * This test must be run as root. |
| * Looping with the -i option does not work correctly. |
| */ |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #include <errno.h> |
| #include <malloc.h> |
| #include <pwd.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <sys/ipc.h> |
| #include <sys/shm.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| |
| extern void rm_shm(int); |
| |
| void cleanup(void); |
| void setup(void); |
| void do_child(void); |
| void do_master_child(void); |
| |
| char *TCID= "kill05"; |
| int TST_TOTAL = 1; |
| int shmid1 = -1; |
| extern key_t semkey; |
| int *flag; |
| |
| int exp_enos[] = {EPERM, 0}; |
| |
| extern int Tst_count; |
| extern int getipckey(); |
| |
| #define TEST_SIG SIGKILL |
| |
| int main(int ac, char **av) |
| { |
| char *msg; /* message returned from parse_opts */ |
| pid_t pid; |
| int status; |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){ |
| tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| #ifdef UCLINUX |
| maybe_run_child(&do_child, ""); |
| #endif |
| |
| setup(); /* global setup */ |
| |
| pid = FORK_OR_VFORK(); |
| if (pid < 0) |
| tst_brkm(TBROK, cleanup, "Fork failed"); |
| |
| if (pid == 0) { |
| do_master_child(); |
| return (0); |
| } |
| else { |
| waitpid(pid, &status, 0); |
| } |
| |
| cleanup(); |
| /*NOTREACHED*/ |
| |
| return(0); |
| } |
| |
| /* |
| * do_master_child() |
| */ |
| void |
| do_master_child() |
| { |
| int lc; /* loop counter */ |
| |
| pid_t pid1; |
| int status; |
| |
| char user1name[] = "nobody"; |
| char user2name[] = "bin"; |
| |
| extern struct passwd * my_getpwnam(char *); |
| |
| struct passwd *ltpuser1, *ltpuser2; |
| |
| ltpuser1 = my_getpwnam(user1name); |
| ltpuser2 = my_getpwnam(user2name); |
| |
| TEST_EXP_ENOS(exp_enos); |
| |
| /* 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; |
| |
| *flag = 0; |
| |
| /* |
| * Fork a process and set the euid so that it is |
| * different from this one. |
| */ |
| |
| pid1 = FORK_OR_VFORK(); |
| |
| if (pid1 < 0) { |
| tst_brkm(TBROK, cleanup, "Fork failed"); |
| } |
| |
| if (pid1 == 0) { /* child */ |
| if (setreuid(ltpuser1->pw_uid, ltpuser1->pw_uid) == -1){ |
| tst_resm(TWARN, "setreuid failed in child"); |
| } |
| #ifdef UCLINUX |
| if (self_exec(av[0], "") < 0) { |
| tst_brkm(TBROK, cleanup, "self_exec of child failed"); |
| } |
| #else |
| do_child(); |
| #endif |
| } else { /* parent */ |
| if (setreuid(ltpuser2->pw_uid,ltpuser2->pw_uid) == -1) { |
| tst_resm(TWARN, "seteuid failed in child"); |
| } |
| |
| TEST(kill(pid1, TEST_SIG)); |
| |
| /* signal the child that we're done */ |
| *flag = 1; |
| |
| waitpid(pid1, &status, 0); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "%s failed - errno = " |
| "%d : %s Expected a return " |
| "value of -1 got %d", TCID, TEST_ERRNO, |
| strerror(TEST_ERRNO), TEST_RETURN); |
| |
| continue; |
| } |
| } |
| |
| /* |
| * Check to see if the errno was set to the expected |
| * value of 1 : EPERM |
| */ |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| if (TEST_ERRNO == EPERM) { |
| tst_resm(TPASS, "errno set to %d : %s, as " |
| "expected", TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| } else { |
| tst_resm(TFAIL, "errno set to %d : %s expected " |
| "%d : %s", TEST_ERRNO, |
| strerror(TEST_ERRNO), 1, strerror(1)); |
| } |
| } |
| } |
| |
| /* |
| * do_child() |
| */ |
| void |
| do_child() |
| { |
| pid_t my_pid; |
| |
| my_pid = getpid(); |
| while(1) { |
| if (*flag == 1) { |
| exit(0); |
| } else { |
| sleep (1); |
| } |
| } |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test |
| */ |
| void |
| setup(void) |
| { |
| /* Check that the process is owned by root */ |
| if (geteuid() != 0) { |
| tst_brkm(TBROK, cleanup, "Test must be run as root"); |
| } |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| /* Make a temp directory and cd to it. |
| * Usefull to be sure getipckey generated different IPC keys. |
| */ |
| tst_tmpdir(); |
| |
| /* get an IPC resource key */ |
| semkey = getipckey(); |
| |
| if ((shmid1 = shmget(semkey, (int)getpagesize(), |
| 0666|IPC_CREAT)) == -1) { |
| tst_brkm(TBROK, cleanup, "Failed to setup shared memory"); |
| } |
| |
| /*flag = (int *)shmat(shmid1, 0, 0);*/ |
| if ((flag = (int *)shmat(shmid1, 0, 0)) == (int *)-1) { |
| tst_brkm(TBROK, cleanup, |
| "Failed to attatch shared memory:%d", flag); |
| } |
| } |
| |
| /* |
| * cleanup() - performs all the ONE TIME cleanup for this test at completion |
| * or premature exit. |
| */ |
| void |
| cleanup(void) |
| { |
| /* |
| * print timing status if that option was specified. |
| * print errno log if that option was specified |
| */ |
| TEST_CLEANUP; |
| |
| /* Remove the temporary directory */ |
| tst_rmdir(); |
| |
| /* |
| * if it exists, remove the shared memory |
| */ |
| rm_shm(shmid1); |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| } |