| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz> |
| * |
| * 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. |
| * |
| * AUTHOR : Nirmala Devi Dhanasekar <nirmala.devi@wipro.com> |
| * |
| * DESCRIPTION |
| * Check for basic errors returned by umount(2) system call. |
| * |
| * Verify that umount(2) returns -1 and sets errno to |
| * |
| * 1) EBUSY if it cannot be umounted, because dir is still busy. |
| * 2) EFAULT if specialfile or device file points to invalid address space. |
| * 3) ENOENT if pathname was empty or has a nonexistent component. |
| * 4) EINVAL if specialfile or device is invalid or not a mount point. |
| * 5) ENAMETOOLONG if pathname was longer than MAXPATHLEN. |
| *****************************************************************************/ |
| |
| #include <errno.h> |
| #include <sys/mount.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/fcntl.h> |
| #include <pwd.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| char *TCID = "umount02"; |
| |
| #define DIR_MODE S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH |
| #define FILE_MODE S_IRWXU | S_IRWXG | S_IRWXO |
| #define MNTPOINT "mntpoint" |
| |
| static char long_path[PATH_MAX + 2]; |
| static int mount_flag; |
| static int fd; |
| |
| static const char *device; |
| |
| static struct test_case_t { |
| char *err_desc; |
| char *mntpoint; |
| int exp_errno; |
| char *exp_retval; |
| } testcases[] = { |
| {"Already mounted/busy", MNTPOINT, EBUSY, "EBUSY"}, |
| {"Invalid address space", NULL, EFAULT, "EFAULT"}, |
| {"Directory not found", "nonexistent", ENOENT, "ENOENT"}, |
| {"Invalid device", "./", EINVAL, "EINVAL"}, |
| {"Pathname too long", long_path, ENAMETOOLONG, "ENAMETOOLONG"} |
| }; |
| |
| int TST_TOTAL = ARRAY_SIZE(testcases); |
| |
| int main(int ac, char **av) |
| { |
| int lc, i; |
| const char *msg; |
| |
| if ((msg = parse_opts(ac, av, 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) { |
| TEST(umount(testcases[i].mntpoint)); |
| |
| if ((TEST_RETURN == -1) && |
| (TEST_ERRNO == testcases[i].exp_errno)) { |
| tst_resm(TPASS, "umount(2) expected failure; " |
| "Got errno - %s : %s", |
| testcases[i].exp_retval, |
| testcases[i].err_desc); |
| } else { |
| tst_resm(TFAIL, "umount(2) failed to produce " |
| "expected error; %d, errno:%s got %d", |
| testcases[i].exp_errno, |
| testcases[i].exp_retval, TEST_ERRNO); |
| } |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| const char *fs_type; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(NULL); |
| |
| tst_tmpdir(); |
| |
| fs_type = tst_dev_fs_type(); |
| device = tst_acquire_device(cleanup); |
| |
| if (!device) |
| tst_brkm(TCONF, cleanup, "Failed to obtain block device"); |
| |
| tst_mkfs(cleanup, device, fs_type, NULL); |
| |
| memset(long_path, 'a', PATH_MAX + 1); |
| |
| SAFE_MKDIR(cleanup, MNTPOINT, DIR_MODE); |
| |
| if (mount(device, MNTPOINT, fs_type, 0, NULL)) |
| tst_brkm(TBROK | TERRNO, cleanup, "mount() failed"); |
| mount_flag = 1; |
| |
| fd = SAFE_OPEN(cleanup, MNTPOINT "/file", O_CREAT | O_RDWR); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| if (fd > 0 && close(fd)) |
| tst_resm(TWARN | TERRNO, "Failed to close file"); |
| |
| if (mount_flag && tst_umount(MNTPOINT)) |
| tst_resm(TWARN | TERRNO, "umount() failed"); |
| |
| if (device) |
| tst_release_device(NULL, device); |
| |
| tst_rmdir(); |
| } |