1 /* 2 * Copyright (c) 2014 Fujitsu Ltd. 3 * Author: Zeng Linggang <zenglg.jy (at) cn.fujitsu.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 * 13 * You should have received a copy of the GNU General Public License along 14 * with this program; if not, write the Free Software Foundation, Inc., 15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 16 */ 17 /* 18 * DESCRIPTION 19 * check mkdirat() with various error conditions that should produce 20 * ELOOP and EROFS. 21 */ 22 23 #define _GNU_SOURCE 24 #include "tst_test.h" 25 #include "lapi/mkdirat.h" 26 27 #define MNT_POINT "mntpoint" 28 #define TEST_DIR "mntpoint/test_dir" 29 #define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \ 30 S_IXGRP|S_IROTH|S_IXOTH) 31 32 static int dir_fd; 33 static int cur_fd = AT_FDCWD; 34 static char test_dir[PATH_MAX] = "."; 35 36 static struct tcase { 37 int *dirfd; 38 char *pathname; 39 int exp_errno; 40 } tcases[] = { 41 {&dir_fd, TEST_DIR, EROFS}, 42 {&cur_fd, TEST_DIR, EROFS}, 43 {&dir_fd, test_dir, ELOOP}, 44 {&cur_fd, test_dir, ELOOP}, 45 }; 46 47 static void setup(void) 48 { 49 unsigned int i; 50 51 dir_fd = SAFE_OPEN(".", O_DIRECTORY); 52 53 SAFE_MKDIR("test_eloop", DIR_MODE); 54 SAFE_SYMLINK("../test_eloop", "test_eloop/test_eloop"); 55 56 /* 57 * NOTE: the ELOOP test is written based on that the consecutive 58 * symlinks limits in kernel is hardwired to 40. 59 */ 60 for (i = 0; i < 43; i++) 61 strcat(test_dir, "/test_eloop"); 62 } 63 64 static void mkdirat_verify(unsigned int i) 65 { 66 struct tcase *test = &tcases[i]; 67 68 TEST(mkdirat(*test->dirfd, test->pathname, 0777)); 69 70 if (TST_RET != -1) { 71 tst_res(TFAIL, "mkdirat() succeeded unexpectedly (%li)", 72 TST_RET); 73 return; 74 } 75 76 if (TST_ERR == test->exp_errno) { 77 tst_res(TPASS | TTERRNO, "mkdirat() failed as expected"); 78 return; 79 } 80 81 tst_res(TFAIL | TTERRNO, 82 "mkdirat() failed unexpectedly; expected: %d - %s", 83 test->exp_errno, tst_strerrno(test->exp_errno)); 84 } 85 86 static struct tst_test test = { 87 .setup = setup, 88 .test = mkdirat_verify, 89 .tcnt = ARRAY_SIZE(tcases), 90 .needs_root = 1, 91 .needs_rofs = 1, 92 .mntpoint = MNT_POINT, 93 }; 94
