| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| /************************************************************************** |
| * |
| * TEST IDENTIFIER : swapoff02 |
| * |
| * |
| * EXECUTED BY : root / superuser |
| * |
| * TEST TITLE : Test checking for basic error conditions |
| * for swapoff(2) |
| * |
| * TEST CASE TOTAL : 3 |
| * |
| * AUTHOR : Aniruddha Marathe <aniruddha.marathe@wipro.com> |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| * This test case checks whether swapoff(2) system call returns |
| * 1. EINVAL when the path does not exist |
| * 2. ENOENT when the path exists but is invalid |
| * 3. EPERM when user is not a superuser |
| * |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * 1. For testing error on invalid user, change the effective uid |
| * $ |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call. |
| * Check return code, if system call fails with errno == expected errno |
| * Issue syscall passed with expected errno |
| * Otherwise, |
| * Issue syscall failed to produce expected errno |
| * |
| * Cleanup: |
| * Do cleanup for the test. |
| * $ |
| * USAGE: <for command-line> |
| * swapoff02 [-c n] [-e] [-i n] [-I x] [-p x] [-t] [-h] [-f] [-p] |
| * where |
| * -c n : Run n copies simultaneously |
| * -e : Turn on errno logging. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -p : Pause for SIGUSR1 before starting |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| *RESTRICTIONS: |
| *Incompatible with kernel versions below 2.1.35. |
| * |
| *CHANGES: |
| * 2005/01/01 Add extra check to stop test if insufficient disk space in dir |
| * -Ricky Ng-Adam (rngadam@yahoo.com) |
| * 2005/01/01 Add extra check to stop test if swap file is on tmpfs |
| * -Ricky Ng-Adam (rngadam@yahoo.com) |
| *****************************************************************************/ |
| |
| #include <unistd.h> |
| #include <errno.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <pwd.h> |
| #include <string.h> |
| #include "test.h" |
| #include "usctest.h" |
| #include <stdlib.h> |
| #include "config.h" |
| #include "linux_syscall_numbers.h" |
| #include "swaponoff.h" |
| |
| static void setup(); |
| static void cleanup(); |
| static int setup01(); |
| static int cleanup01(); |
| static int setup02(); |
| |
| char *TCID = "swapoff02"; /* Test program identifier. */ |
| int TST_TOTAL = 3; /* Total number of test cases. */ |
| char nobody_uid[] = "nobody"; |
| struct passwd *ltpuser; |
| int need_swapfile_cleanup = 0; /* attempt to swapoff in cleanup */ |
| |
| static int exp_enos[] = { EPERM, EINVAL, ENOENT, 0 }; |
| |
| static struct test_case_t { |
| char *err_desc; /* error description */ |
| int exp_errno; /* expected error number */ |
| char *exp_errval; /* Expected errorvalue string */ |
| char *path; /* path for swapon */ |
| int (*setupfunc) (); /* Test setup function */ |
| int (*cleanfunc) (); /* Test cleanup function */ |
| } testcase[] = { |
| { |
| "path does not exist", ENOENT, "ENOENT", "./abcd", NULL, NULL}, { |
| "Invalid path", EINVAL, "EINVAL ", "./nofile", setup02, NULL}, { |
| "Permission denied", EPERM, "EPERM ", "./swapfile01", |
| setup01, cleanup01} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| |
| int lc, i; |
| 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++) { |
| |
| Tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) { |
| |
| if (testcase[i].setupfunc && |
| testcase[i].setupfunc() == -1) { |
| tst_resm(TWARN, "Failed to setup test %d." |
| " Skipping test", i); |
| continue; |
| } else { |
| TEST(ltp_syscall(__NR_swapoff, |
| testcase[i].path)); |
| } |
| |
| if (testcase[i].cleanfunc && |
| testcase[i].cleanfunc() == -1) { |
| tst_brkm(TBROK, cleanup, "cleanup failed," |
| " quitting the test"); |
| } |
| |
| /* check return code */ |
| if ((TEST_RETURN == -1) |
| && (TEST_ERRNO == testcase[i].exp_errno)) { |
| tst_resm(TPASS, |
| "swapoff(2) expected failure;" |
| " Got errno - %s : %s", |
| testcase[i].exp_errval, |
| testcase[i].err_desc); |
| |
| } else { |
| tst_resm(TFAIL, "swapoff(2) failed to produce" |
| " expected error; %d, errno" |
| ": %s and got %d", |
| testcase[i].exp_errno, |
| testcase[i].exp_errval, TEST_ERRNO); |
| |
| if ((TEST_RETURN == 0) && (i == 2)) { |
| if (ltp_syscall |
| (__NR_swapon, "./swapfile01", |
| 0) != 0) { |
| tst_brkm(TBROK, cleanup, |
| " Failed to turn on" |
| " swap file"); |
| } |
| } |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| } /*End of TEST LOOPS */ |
| } |
| |
| /*Clean up and exit */ |
| cleanup(); |
| |
| tst_exit(); |
| } /*End of main */ |
| |
| /* |
| * setup01() - This function sets the user as nobody |
| */ |
| int setup01() |
| { |
| if ((ltpuser = getpwnam(nobody_uid)) == NULL) { |
| tst_resm(TWARN, "\"nobody\" user not present. skipping test"); |
| return -1; |
| } |
| |
| if (seteuid(ltpuser->pw_uid) == -1) { |
| tst_resm(TWARN, "seteuid failed to " |
| "to set the effective uid to %d", ltpuser->pw_uid); |
| perror("seteuid"); |
| return -1; |
| } |
| |
| return 0; /* user switched to nobody */ |
| } |
| |
| /* |
| * cleanup01() - switch back to user root |
| */ |
| int cleanup01() |
| { |
| if (seteuid(0) == -1) { |
| tst_brkm(TBROK, cleanup, "seteuid failed to set uid to root"); |
| perror("seteuid"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int setup02() |
| { |
| int fd; |
| fd = creat("nofile", S_IRWXU); |
| if (fd == -1) |
| tst_resm(TWARN, "Failed to create temporary file"); |
| return 0; |
| } |
| |
| /* setup() - performs all ONE TIME setup for this test */ |
| void setup() |
| { |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* set the expected errnos... */ |
| TEST_EXP_ENOS(exp_enos); |
| |
| /* Check whether we are root */ |
| if (geteuid() != 0) { |
| tst_brkm(TBROK, NULL, "Test must be run as root"); |
| } |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| if (tst_is_cwd_tmpfs()) { |
| tst_brkm(TCONF, cleanup, |
| "Cannot do swapon on a file located on a tmpfs filesystem"); |
| } |
| |
| if (tst_is_cwd_nfs()) { |
| tst_brkm(TCONF, cleanup, |
| "Cannot do swapon on a file located on a nfs filesystem"); |
| } |
| |
| if (!tst_cwd_has_free(65536)) { |
| tst_brkm(TBROK, cleanup, |
| "Insufficient disk space to create swap file"); |
| } |
| |
| /*create file */ |
| if (system |
| ("dd if=/dev/zero of=swapfile01 bs=1024 count=65536 > tmpfile" |
| " 2>&1") != 0) { |
| tst_brkm(TBROK, cleanup, "Failed to create file for swap"); |
| } |
| |
| /* make above file a swap file */ |
| if (system("mkswap ./swapfile01 > tmpfile 2>&1") != 0) { |
| tst_brkm(TBROK, cleanup, "Failed to make swapfile"); |
| } |
| |
| if (ltp_syscall(__NR_swapon, "./swapfile01", 0) != 0) { |
| tst_brkm(TBROK, cleanup, "Failed to turn on the swap file." |
| " skipping the test iteration"); |
| } |
| |
| need_swapfile_cleanup = 1; |
| |
| } |
| |
| /* |
| * cleanup() - Performs one time cleanup for this test at |
| * completion or premature exit |
| */ |
| void cleanup() |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| if (need_swapfile_cleanup |
| && (ltp_syscall(__NR_swapoff, "./swapfile01") != 0)) { |
| tst_resm(TWARN, |
| " Failed to turn off swap file. System reboot" |
| " after execution of LTP test suite is" |
| " recommended."); |
| } |
| |
| tst_rmdir(); |
| |
| } |