| /* |
| * Copyright (c) 2014 Fujitsu Ltd. |
| * Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com> |
| * |
| * 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. |
| */ |
| /* |
| * DESCRIPTION |
| * check mkdirat() with various error conditions that should produce |
| * ELOOP and EROFS. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <errno.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/mman.h> |
| #include <fcntl.h> |
| #include <sys/mount.h> |
| #include "test.h" |
| #include "safe_macros.h" |
| #include "lapi/mkdirat.h" |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| #define TEST_FILE1 "mntpoint/test_file1" |
| #define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \ |
| S_IXGRP|S_IROTH|S_IXOTH) |
| |
| char *TCID = "mkdirat02"; |
| |
| static int dir_fd; |
| static int cur_fd = AT_FDCWD; |
| static char test_file2[PATH_MAX] = "."; |
| static const char *device; |
| static int mount_flag_dir; |
| static int mount_flag_cur; |
| |
| static struct test_case_t { |
| int *dirfd; |
| char *pathname; |
| int exp_errno; |
| } TC[] = { |
| {&dir_fd, TEST_FILE1, EROFS}, |
| {&cur_fd, TEST_FILE1, EROFS}, |
| {&dir_fd, test_file2, ELOOP}, |
| {&cur_fd, test_file2, ELOOP}, |
| }; |
| |
| int TST_TOTAL = ARRAY_SIZE(TC); |
| static void mkdirat_verify(const struct test_case_t *); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| int i; |
| const char *msg; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != 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++) |
| mkdirat_verify(&TC[i]); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| int i; |
| const char *fs_type; |
| |
| tst_require_root(NULL); |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| fs_type = tst_dev_fs_type(); |
| device = tst_acquire_device(cleanup); |
| |
| if (!device) |
| tst_brkm(TCONF, cleanup, "Failed to acquire device"); |
| |
| SAFE_MKDIR(cleanup, "test_dir", DIR_MODE); |
| dir_fd = SAFE_OPEN(cleanup, "test_dir", O_DIRECTORY); |
| |
| SAFE_MKDIR(cleanup, "test_eloop", DIR_MODE); |
| SAFE_SYMLINK(cleanup, "../test_eloop", "test_eloop/test_eloop"); |
| |
| SAFE_MKDIR(cleanup, "test_dir/test_eloop", DIR_MODE); |
| SAFE_SYMLINK(cleanup, "../test_eloop", |
| "test_dir/test_eloop/test_eloop"); |
| /* |
| * NOTE: the ELOOP test is written based on that the consecutive |
| * symlinks limits in kernel is hardwired to 40. |
| */ |
| for (i = 0; i < 43; i++) |
| strcat(test_file2, "/test_eloop"); |
| |
| tst_mkfs(cleanup, device, fs_type, NULL); |
| |
| SAFE_MKDIR(cleanup, "test_dir/mntpoint", DIR_MODE); |
| if (mount(device, "test_dir/mntpoint", fs_type, MS_RDONLY, NULL) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "mount device:%s failed", device); |
| } |
| mount_flag_dir = 1; |
| |
| SAFE_MKDIR(cleanup, "mntpoint", DIR_MODE); |
| if (mount(device, "mntpoint", fs_type, MS_RDONLY, NULL) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "mount device:%s failed", device); |
| } |
| mount_flag_cur = 1; |
| } |
| |
| static void mkdirat_verify(const struct test_case_t *test) |
| { |
| TEST(mkdirat(*test->dirfd, test->pathname, 0777)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "mkdirat() returned %ld, expected -1, errno=%d", |
| TEST_RETURN, test->exp_errno); |
| return; |
| } |
| |
| if (TEST_ERRNO == test->exp_errno) { |
| tst_resm(TPASS | TTERRNO, "mkdirat() failed as expected"); |
| } else { |
| tst_resm(TFAIL | TTERRNO, |
| "mkdirat() failed unexpectedly; expected: %d - %s", |
| test->exp_errno, strerror(test->exp_errno)); |
| } |
| } |
| |
| static void cleanup(void) |
| { |
| if (mount_flag_dir && tst_umount("mntpoint") < 0) |
| tst_resm(TWARN | TERRNO, "umount device:%s failed", device); |
| |
| if (mount_flag_cur && tst_umount("test_dir/mntpoint") < 0) |
| tst_resm(TWARN | TERRNO, "umount device:%s failed", device); |
| |
| if (device) |
| tst_release_device(NULL, device); |
| |
| tst_rmdir(); |
| } |