| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| * 07/2001 John George |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| /* |
| * Test Description: |
| * Verify that, |
| * 1) truncate(2) returns -1 and sets errno to EACCES if search/write |
| * permission denied for the process on the component of the path prefix |
| * or named file. |
| * 2) truncate(2) returns -1 and sets errno to ENOTDIR if the component of |
| * the path prefix is not a directory. |
| * 3) truncate(2) returns -1 and sets errno to EFAULT if pathname points |
| * outside user's accessible address space. |
| * 4) truncate(2) returns -1 and sets errno to ENAMETOOLONG if the component |
| * of a pathname exceeded 255 characters or entire pathname exceeds 1023 |
| * characters. |
| * 5) truncate(2) returns -1 and sets errno to ENOENT if the named file |
| * does not exist. |
| * 6) truncate(2) returns -1 and sets errno to EISDIR if the named file |
| * is a directory. |
| * 7) truncate(2) returns -1 and sets errno to EFBIG if the argument length |
| * is larger than the maximum file size. |
| * 8) truncate(2) returns -1 and sets errno to ELOOP if too many symbolic |
| * links were encountered in translating the pathname. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/fcntl.h> |
| #include <sys/mman.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <pwd.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| #include "safe_macros.h" |
| |
| #define TEST_FILE1 "testfile" |
| #define TEST_FILE2 "t_file/testfile" |
| #define TEST_FILE3 "testfile3" |
| #define TEST_SYM1 "testsymlink1" |
| #define TEST_SYM2 "testsymlink2" |
| #define TEST_DIR1 "testdir" |
| #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH |
| #define NEW_MODE S_IRUSR | S_IRGRP | S_IROTH |
| #define DIR_MODE S_IRWXU |
| #define TRUNC_LEN 256 |
| |
| static char long_pathname[PATH_MAX + 2]; |
| |
| static struct test_case_t { |
| char *pathname; |
| off_t length; |
| int exp_errno; |
| } test_cases[] = { |
| { TEST_FILE1, TRUNC_LEN, EACCES }, |
| { TEST_FILE2, TRUNC_LEN, ENOTDIR }, |
| #if !defined(UCLINUX) |
| { NULL, TRUNC_LEN, EFAULT }, |
| { (char *)-1, TRUNC_LEN, EFAULT }, |
| #endif |
| { long_pathname, TRUNC_LEN, ENAMETOOLONG }, |
| { "", TRUNC_LEN, ENOENT }, |
| { TEST_DIR1, TRUNC_LEN, EISDIR }, |
| { TEST_FILE3, LLONG_MAX, EFBIG }, |
| { TEST_SYM1, TRUNC_LEN, ELOOP } |
| }; |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void truncate_verify(struct test_case_t *); |
| |
| char *TCID = "truncate03"; |
| int TST_TOTAL = ARRAY_SIZE(test_cases); |
| static int exp_enos[] = { EACCES, ENOTDIR, EFAULT, ENAMETOOLONG, |
| ENOENT, EISDIR, EFBIG, ELOOP, 0 }; |
| |
| int main(int ac, char **av) |
| { |
| int i, lc; |
| const char *msg; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| TEST_EXP_ENOS(exp_enos); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) |
| truncate_verify(&test_cases[i]); |
| |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void setup(void) |
| { |
| struct passwd *ltpuser; |
| char *bad_addr; |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(NULL); |
| |
| ltpuser = SAFE_GETPWNAM(cleanup, "nobody"); |
| SAFE_SETEUID(cleanup, ltpuser->pw_uid); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| SAFE_TOUCH(cleanup, TEST_FILE1, NEW_MODE, NULL); |
| |
| SAFE_TOUCH(cleanup, "t_file", FILE_MODE, NULL); |
| |
| #if !defined(UCLINUX) |
| test_cases[2].pathname = (char *)get_high_address(); |
| |
| bad_addr = SAFE_MMAP(cleanup, 0, 1, PROT_NONE, |
| MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); |
| test_cases[3].pathname = bad_addr; |
| #endif |
| |
| memset(long_pathname, 'a', PATH_MAX + 1); |
| |
| SAFE_MKDIR(cleanup, TEST_DIR1, DIR_MODE); |
| |
| SAFE_TOUCH(cleanup, TEST_FILE3, FILE_MODE, NULL); |
| |
| SAFE_SYMLINK(cleanup, TEST_SYM1, TEST_SYM2); |
| SAFE_SYMLINK(cleanup, TEST_SYM2, TEST_SYM1); |
| } |
| |
| void truncate_verify(struct test_case_t *tc) |
| { |
| TEST(truncate(tc->pathname, tc->length)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "truncate() returned %ld, " |
| "expected -1, errno:%d", TEST_RETURN, |
| tc->exp_errno); |
| return; |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| if (TEST_ERRNO == tc->exp_errno) { |
| tst_resm(TPASS | TTERRNO, "truncate() failed as expected"); |
| } else { |
| tst_resm(TFAIL | TTERRNO, |
| "truncate() failed unexpectedly; expected: %d - %s", |
| tc->exp_errno, strerror(tc->exp_errno)); |
| } |
| } |
| |
| void cleanup(void) |
| { |
| TEST_CLEANUP; |
| |
| tst_rmdir(); |
| } |