| /* |
| * Copyright (c) 2014 Fujitsu Ltd. |
| * Author: Xing Gu <gux.fnst@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: |
| * Verify that, |
| * 1)openat() succeeds to open a file in append mode, when |
| * 'flags' is set to O_APPEND. |
| * 2)openat() succeeds to enable the close-on-exec flag for a |
| * file descriptor, when 'flags' is set to O_CLOEXEC. |
| * 3)openat() succeeds to allow files whose sizes cannot be |
| * represented in an off_t but can be represented in an off64_t |
| * to be opened, when 'flags' is set to O_LARGEFILE. |
| * 4)openat() succeeds to not update the file last access time |
| * (st_atime in the inode) when the file is read, when 'flags' |
| * is set to O_NOATIME. |
| * 5)openat() succeeds to open the file failed if the file is a |
| * symbolic link, when 'flags' is set to O_NOFOLLOW. |
| * 6)openat() succeeds to truncate the file to length 0 if the file |
| * already exists and is a regular file and the open mode allows |
| * writing, when 'flags' is set to O_TRUNC. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/wait.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <mntent.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| #include "lapi/fcntl.h" |
| #include "openat.h" |
| |
| #define TEST_APP "openat02_child" |
| |
| #define TEST_FILE "test_file" |
| #define SFILE "sfile" |
| #define LARGE_FILE "large_file" |
| |
| #define STR "abcdefg" |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| static void testfunc_append(void); |
| static void testfunc_cloexec(void); |
| static void testfunc_largefile(void); |
| static void testfunc_noatime(void); |
| static void testfunc_nofollow(void); |
| static void testfunc_trunc(void); |
| |
| static void (*testfunc[])(void) = { |
| testfunc_append, |
| testfunc_cloexec, |
| testfunc_largefile, |
| testfunc_noatime, |
| testfunc_nofollow, |
| testfunc_trunc, |
| }; |
| |
| char *TCID = "openat02"; |
| int TST_TOTAL = ARRAY_SIZE(testfunc); |
| |
| 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++) |
| (*testfunc[i])(); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void setup(void) |
| { |
| TEST_PAUSE; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| tst_tmpdir(); |
| |
| SAFE_FILE_PRINTF(cleanup, TEST_FILE, "test file"); |
| |
| SAFE_SYMLINK(cleanup, TEST_FILE, SFILE); |
| } |
| |
| void testfunc_append(void) |
| { |
| off_t file_offset; |
| |
| SAFE_FILE_PRINTF(cleanup, TEST_FILE, "test file"); |
| |
| TEST(openat(AT_FDCWD, TEST_FILE, O_APPEND | O_RDWR, 0777)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "openat failed"); |
| return; |
| } |
| |
| SAFE_WRITE(cleanup, 1, TEST_RETURN, STR, sizeof(STR) - 1); |
| |
| file_offset = SAFE_LSEEK(cleanup, TEST_RETURN, 0, SEEK_CUR); |
| |
| if (file_offset > (off_t)(sizeof(STR) - 1)) |
| tst_resm(TPASS, "test O_APPEND for openat success"); |
| else |
| tst_resm(TFAIL, "test O_APPEND for openat failed"); |
| |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| } |
| |
| void testfunc_cloexec(void) |
| { |
| pid_t pid; |
| int status; |
| char buf[20]; |
| |
| if ((tst_kvercmp(2, 6, 23)) < 0) { |
| tst_resm(TCONF, "test O_CLOEXEC flags for openat " |
| "needs kernel 2.6.23 or higher"); |
| return; |
| } |
| |
| TEST(openat(AT_FDCWD, TEST_FILE, O_CLOEXEC | O_RDWR, 0777)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "openat failed"); |
| return; |
| } |
| |
| sprintf(buf, "%ld", TEST_RETURN); |
| |
| pid = tst_fork(); |
| |
| if (pid < 0) |
| tst_brkm(TBROK | TERRNO, cleanup, "fork() failed"); |
| |
| if (pid == 0) { |
| if (execlp(TEST_APP, TEST_APP, buf, NULL)) |
| exit(2); |
| } |
| |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| |
| if (wait(&status) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "wait() failed"); |
| |
| if (WIFEXITED(status)) { |
| switch ((int8_t)WEXITSTATUS(status)) { |
| case 0: |
| tst_resm(TPASS, "test O_CLOEXEC for openat success"); |
| break; |
| case 1: |
| tst_resm(TFAIL, "test O_CLOEXEC for openat failed"); |
| break; |
| default: |
| tst_brkm(TBROK, cleanup, "execlp() failed"); |
| } |
| } else { |
| tst_brkm(TBROK, cleanup, |
| "openat2_exec exits with unexpected error"); |
| } |
| } |
| |
| void testfunc_largefile(void) |
| { |
| int fd; |
| off64_t offset; |
| |
| fd = SAFE_OPEN(cleanup, LARGE_FILE, |
| O_LARGEFILE | O_RDWR | O_CREAT, 0777); |
| |
| offset = lseek64(fd, 4.1*1024*1024*1024, SEEK_SET); |
| if (offset == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "lseek64 failed"); |
| |
| SAFE_WRITE(cleanup, 1, fd, STR, sizeof(STR) - 1); |
| |
| SAFE_CLOSE(cleanup, fd); |
| |
| TEST(openat(AT_FDCWD, LARGE_FILE, O_LARGEFILE | O_RDONLY, 0777)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL, "test O_LARGEFILE for openat failed"); |
| } else { |
| tst_resm(TPASS, "test O_LARGEFILE for openat success"); |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| } |
| } |
| |
| void testfunc_noatime(void) |
| { |
| struct stat file_stat, file_newstat; |
| char buf; |
| const char *flags[] = {"noatime", "relatime", NULL}; |
| int ret; |
| |
| if ((tst_kvercmp(2, 6, 8)) < 0) { |
| tst_resm(TCONF, "test O_NOATIME flags for openat " |
| "needs kernel 2.6.8 or higher"); |
| return; |
| } |
| |
| ret = tst_path_has_mnt_flags(cleanup, NULL, flags); |
| if (ret > 0) { |
| tst_resm(TCONF, "test O_NOATIME flag for openat needs " |
| "filesystems which are mounted without " |
| "noatime and relatime"); |
| return; |
| } |
| |
| SAFE_STAT(cleanup, TEST_FILE, &file_stat); |
| |
| sleep(1); |
| |
| TEST(openat(AT_FDCWD, TEST_FILE, O_NOATIME | O_RDONLY, 0777)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "openat failed"); |
| return; |
| } |
| |
| SAFE_READ(cleanup, 1, TEST_RETURN, &buf, 1); |
| |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| |
| SAFE_STAT(cleanup, TEST_FILE, &file_newstat); |
| |
| if (file_stat.st_atime == file_newstat.st_atime) |
| tst_resm(TPASS, "test O_NOATIME for openat success"); |
| else |
| tst_resm(TFAIL, "test O_NOATIME for openat failed"); |
| } |
| |
| void testfunc_nofollow(void) |
| { |
| TEST(openat(AT_FDCWD, SFILE, O_NOFOLLOW | O_RDONLY, 0777)); |
| |
| if (TEST_RETURN == -1 && TEST_ERRNO == ELOOP) { |
| tst_resm(TPASS, "test O_NOFOLLOW for openat success"); |
| } else { |
| tst_resm(TFAIL, "test O_NOFOLLOW for openat failed"); |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| } |
| } |
| |
| void testfunc_trunc(void) |
| { |
| struct stat file_stat; |
| |
| TEST(openat(AT_FDCWD, TEST_FILE, O_TRUNC | O_RDWR, 0777)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "openat failed"); |
| return; |
| } |
| |
| SAFE_FSTAT(cleanup, TEST_RETURN, &file_stat); |
| |
| if (file_stat.st_size == 0) |
| tst_resm(TPASS, "test O_TRUNC for openat success"); |
| else |
| tst_resm(TFAIL, "test O_TRUNC for openat failed"); |
| |
| SAFE_CLOSE(cleanup, TEST_RETURN); |
| } |
| |
| void cleanup(void) |
| { |
| tst_rmdir(); |
| } |