| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| * Copyright (c) 2014 Fujitsu Ltd. |
| * Author: Xiaoguang Wang <wangxg.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. msync() fails with -1 return value and sets errno to EBUSY |
| * if MS_INVALIDATE was specified in flags, and a memory lock |
| * exists for the specified address range. |
| * 2. msync() fails with -1 return value and sets errno to EINVAL |
| * if addr is not a multiple of PAGESIZE; or any bit other than |
| * MS_ASYNC | MS_INVALIDATE | MS_SYNC is set in flags; or both |
| * MS_SYNC and MS_ASYNC are set in flags. |
| * 3. msync() fails with -1 return value and sets errno to ENOMEM |
| * if the indicated memory (or part of it) was not mapped. |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/mman.h> |
| #include <sys/mount.h> |
| #include <pwd.h> |
| #include <sys/resource.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| #define INV_SYNC -1 |
| #define TEMPFILE "msync_file" |
| #define BUF_SIZE 256 |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| static int fd; |
| static char *addr1; |
| static char *addr2; |
| static char *addr3; |
| |
| #if !defined(UCLINUX) |
| static char *addr4; |
| #endif |
| |
| static size_t page_sz; |
| |
| static struct test_case_t { |
| char **addr; |
| int flags; |
| int exp_errno; |
| } test_cases[] = { |
| { &addr1, MS_INVALIDATE, EBUSY }, |
| { &addr1, MS_ASYNC | MS_SYNC, EINVAL }, |
| { &addr1, INV_SYNC, EINVAL }, |
| { &addr2, MS_SYNC, EINVAL }, |
| { &addr3, MS_SYNC, EINVAL }, |
| #if !defined(UCLINUX) |
| { &addr4, MS_SYNC, ENOMEM }, |
| #endif |
| }; |
| |
| static void msync_verify(struct test_case_t *tc); |
| |
| char *TCID = "msync03"; |
| int TST_TOTAL = ARRAY_SIZE(test_cases); |
| |
| 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(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) |
| msync_verify(&test_cases[i]); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| size_t nwrite = 0; |
| char write_buf[BUF_SIZE]; |
| struct rlimit rl; |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_tmpdir(); |
| |
| TEST_PAUSE; |
| |
| page_sz = (size_t)sysconf(_SC_PAGESIZE); |
| |
| fd = SAFE_OPEN(cleanup, TEMPFILE, O_RDWR | O_CREAT, 0666); |
| |
| memset(write_buf, 'a', BUF_SIZE); |
| while (nwrite < page_sz) { |
| SAFE_WRITE(cleanup, 1, fd, write_buf, BUF_SIZE); |
| nwrite += BUF_SIZE; |
| } |
| |
| addr1 = SAFE_MMAP(cleanup, 0, page_sz, PROT_READ | PROT_WRITE, |
| MAP_SHARED | MAP_LOCKED, fd, 0); |
| |
| /* addr2 is not a multiple of PAGESIZE */ |
| addr2 = addr1 + 1; |
| |
| /* addr3 is outside the address space of the process */ |
| if (getrlimit(RLIMIT_DATA, &rl) < 0) |
| tst_brkm(TBROK | TERRNO, NULL, "getrlimit failed"); |
| addr3 = (char *)rl.rlim_max; |
| |
| #if !defined(UCLINUX) |
| /* memory pointed to by addr4 was not mapped */ |
| addr4 = get_high_address(); |
| #endif |
| } |
| |
| static void msync_verify(struct test_case_t *tc) |
| { |
| TEST(msync(*(tc->addr), page_sz, tc->flags)); |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "msync succeeded unexpectedly"); |
| return; |
| } |
| |
| if (TEST_ERRNO == tc->exp_errno) { |
| tst_resm(TPASS | TTERRNO, "msync failed as expected"); |
| } else { |
| tst_resm(TFAIL | TTERRNO, |
| "msync failed unexpectedly; expected: " |
| "%d - %s", tc->exp_errno, |
| strerror(tc->exp_errno)); |
| } |
| } |
| |
| static void cleanup(void) |
| { |
| if (addr1 && munmap(addr1, page_sz) < 0) |
| tst_resm(TWARN | TERRNO, "munmap() failed"); |
| |
| if (fd > 0 && close(fd) < 0) |
| tst_resm(TWARN | TERRNO, "close() failed"); |
| |
| tst_rmdir(); |
| } |