| /* |
| * Copyright (c) International Business Machines Corp., 2004 |
| * Written by Robbie Williamson |
| * |
| * 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: Test that a normal page cannot be mapped into a high |
| * memory region. |
| */ |
| |
| #include <sys/types.h> |
| #include <sys/mman.h> |
| #include <sys/mount.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| char *TCID = "mmap15"; |
| int TST_TOTAL = 1; |
| |
| #define HIGH_ADDR (void *)(1L << 53) |
| |
| static long map_sz; |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| int main(int ac, char **av) |
| { |
| int lc, fd; |
| const char *msg; |
| void *addr; |
| |
| #if __WORDSIZE == 32 |
| tst_brkm(TCONF, NULL, "This test is only for 64bit"); |
| #endif |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| fd = SAFE_OPEN(cleanup, "testfile", O_RDWR | O_CREAT, 0666); |
| |
| /* Attempt to mmap into highmem addr, should get ENOMEM */ |
| addr = mmap(HIGH_ADDR, map_sz, PROT_READ, |
| MAP_SHARED | MAP_FIXED, fd, 0); |
| if (addr != MAP_FAILED) { |
| tst_resm(TFAIL, "mmap into high region " |
| "succeeded unexpectedly"); |
| munmap(addr, map_sz); |
| close(fd); |
| continue; |
| } |
| |
| if (errno != ENOMEM) { |
| tst_resm(TFAIL | TERRNO, "mmap into high region " |
| "failed unexpectedly - expect " |
| "errno=ENOMEM, got"); |
| } else { |
| tst_resm(TPASS | TERRNO, "mmap into high region " |
| "failed as expected"); |
| } |
| |
| SAFE_CLOSE(cleanup, fd); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| tst_tmpdir(); |
| |
| map_sz = getpagesize(); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| tst_rmdir(); |
| } |