| /* |
| * 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 <string.h> |
| #include <sys/mount.h> |
| #include "tst_test.h" |
| |
| #define MNTPOINT "mntpoint" |
| |
| static char long_path[PATH_MAX + 2]; |
| static int mount_flag; |
| static int fd; |
| |
| static struct tcase { |
| const char *err_desc; |
| const char *mntpoint; |
| int exp_errno; |
| } tcases[] = { |
| {"Already mounted/busy", MNTPOINT, EBUSY}, |
| {"Invalid address", NULL, EFAULT}, |
| {"Directory not found", "nonexistent", ENOENT}, |
| {"Invalid device", "./", EINVAL}, |
| {"Pathname too long", long_path, ENAMETOOLONG} |
| }; |
| |
| static void verify_umount(unsigned int n) |
| { |
| struct tcase *tc = &tcases[n]; |
| |
| TEST(umount(tc->mntpoint)); |
| |
| if (TEST_RETURN != -1) { |
| tst_res(TFAIL, "umount() succeeds unexpectedly"); |
| return; |
| } |
| |
| if (tc->exp_errno != TEST_ERRNO) { |
| tst_res(TFAIL | TTERRNO, "umount() should fail with %s", |
| tst_strerrno(tc->exp_errno)); |
| return; |
| } |
| |
| tst_res(TPASS | TTERRNO, "umount() fails as expected: %s", |
| tc->err_desc); |
| } |
| |
| static void setup(void) |
| { |
| memset(long_path, 'a', PATH_MAX + 1); |
| |
| SAFE_MKDIR(MNTPOINT, 0775); |
| SAFE_MOUNT(tst_device->dev, MNTPOINT, tst_device->fs_type, 0, NULL); |
| mount_flag = 1; |
| |
| fd = SAFE_CREAT(MNTPOINT "/file", 0777); |
| } |
| |
| static void cleanup(void) |
| { |
| if (fd > 0) |
| SAFE_CLOSE(fd); |
| |
| if (mount_flag) |
| tst_umount(MNTPOINT); |
| } |
| |
| static struct tst_test test = { |
| .tcnt = ARRAY_SIZE(tcases), |
| .needs_root = 1, |
| .needs_tmpdir = 1, |
| .format_device = 1, |
| .setup = setup, |
| .cleanup = cleanup, |
| .test = verify_umount, |
| }; |