| /* 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. |
| * |
| */ |
| /* |
| * This test case checks whether swapon(2) system call returns |
| * 1. ENOENT when the path does not exist |
| * 2. EINVAL when the path exists but is invalid |
| * 3. EPERM when user is not a superuser |
| * 4. EBUSY when the specified path is already being used as a swap area |
| */ |
| |
| #include <unistd.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <pwd.h> |
| #include <string.h> |
| #include <sys/utsname.h> |
| #include <signal.h> |
| #include "test.h" |
| #include "lapi/syscalls.h" |
| #include "safe_macros.h" |
| #include "libswapon.h" |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void setup01(void); |
| static void cleanup01(void); |
| |
| char *TCID = "swapon02"; |
| int TST_TOTAL = 4; |
| |
| static uid_t nobody_uid; |
| static int do_swapoff; |
| static long fs_type; |
| |
| static struct test_case_t { |
| char *err_desc; |
| int exp_errno; |
| char *exp_errval; |
| char *path; |
| void (*setup)(void); |
| void (*cleanup)(void); |
| } testcases[] = { |
| {"Path does not exist", ENOENT, "ENOENT", "./doesnotexist", NULL, NULL}, |
| {"Invalid path", EINVAL, "EINVAL", "./notswap", NULL, NULL}, |
| {"Permission denied", EPERM, "EPERM", "./swapfile01", |
| setup01, cleanup01}, |
| {"File already used", EBUSY, "EBUSY", "./alreadyused", NULL, NULL}, |
| }; |
| |
| static void verify_swapon(struct test_case_t *test) |
| { |
| if (test->setup) |
| test->setup(); |
| |
| TEST(ltp_syscall(__NR_swapon, test->path, 0)); |
| |
| if (test->cleanup) |
| test->cleanup(); |
| |
| if (TEST_RETURN == -1 && TEST_ERRNO == test->exp_errno) { |
| tst_resm(TPASS, "swapon(2) expected failure;" |
| " Got errno - %s : %s", |
| test->exp_errval, test->err_desc); |
| return; |
| } |
| |
| if (fs_type == TST_BTRFS_MAGIC && errno == EINVAL) { |
| tst_resm(TCONF, "Swapfile on BTRFS not implemeted"); |
| return; |
| } |
| |
| tst_resm(TFAIL, "swapon(2) failed to produce expected error:" |
| " %d, errno: %s and got %d.", test->exp_errno, |
| test->exp_errval, TEST_ERRNO); |
| } |
| |
| int main(int ac, char **av) |
| { |
| int lc, i; |
| |
| tst_parse_opts(ac, av, NULL, NULL); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| for (i = 0; i < TST_TOTAL; i++) |
| verify_swapon(testcases + i); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup01(void) |
| { |
| SAFE_SETEUID(cleanup, nobody_uid); |
| } |
| |
| static void cleanup01(void) |
| { |
| SAFE_SETEUID(cleanup, 0); |
| } |
| |
| static void setup(void) |
| { |
| struct passwd *nobody; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(); |
| |
| nobody = SAFE_GETPWNAM(cleanup, "nobody"); |
| nobody_uid = nobody->pw_uid; |
| |
| tst_tmpdir(); |
| |
| switch ((fs_type = tst_fs_type(cleanup, "."))) { |
| case TST_NFS_MAGIC: |
| case TST_TMPFS_MAGIC: |
| tst_brkm(TCONF, cleanup, |
| "Cannot do swapon on a file on %s filesystem", |
| tst_fs_type_name(fs_type)); |
| break; |
| } |
| |
| SAFE_TOUCH(cleanup, "notswap", 0777, NULL); |
| make_swapfile(cleanup, "swapfile01"); |
| make_swapfile(cleanup, "alreadyused"); |
| |
| if (ltp_syscall(__NR_swapon, "alreadyused", 0)) { |
| if (fs_type != TST_BTRFS_MAGIC || errno != EINVAL) |
| tst_resm(TWARN | TERRNO, "swapon(alreadyused) failed"); |
| } else { |
| do_swapoff = 1; |
| } |
| |
| TEST_PAUSE; |
| } |
| |
| void cleanup(void) |
| { |
| if (do_swapoff && ltp_syscall(__NR_swapoff, "alreadyused")) |
| tst_resm(TWARN | TERRNO, "swapoff(alreadyused) failed"); |
| |
| tst_rmdir(); |
| } |