1 /*
2 * Copyright (c) International Business Machines Corp., 2004
3 * Written by Robbie Williamson
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * Test Description: Test that a normal page cannot be mapped into a high
22 * memory region.
23 */
24
25 #include <sys/types.h>
26 #include <sys/mman.h>
27 #include <sys/mount.h>
28 #include <sys/stat.h>
29 #include <errno.h>
30 #include <fcntl.h>
31 #include <signal.h>
32 #include <stdint.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37 #include "test.h"
38 #include "safe_macros.h"
39 #include "lapi/abisize.h"
40
41 char *TCID = "mmap15";
42 int TST_TOTAL = 1;
43
44 #ifdef __ia64__
45 # define HIGH_ADDR (void *)(0xa000000000000000UL)
46 #else
47 # define HIGH_ADDR (void *)(-page_size)
48 #endif
49
50 static long page_size;
51
52 static void setup(void);
53 static void cleanup(void);
54
main(int ac,char ** av)55 int main(int ac, char **av)
56 {
57 int lc, fd;
58 void *addr;
59
60 #ifdef TST_ABI32
61 tst_brkm(TCONF, NULL, "This test is only for 64bit");
62 #endif
63
64 tst_parse_opts(ac, av, NULL, NULL);
65
66 setup();
67
68 for (lc = 0; TEST_LOOPING(lc); lc++) {
69 tst_count = 0;
70
71 fd = SAFE_OPEN(cleanup, "testfile", O_RDWR | O_CREAT, 0666);
72
73 /* Attempt to mmap into highmem addr, should get ENOMEM */
74 addr = mmap(HIGH_ADDR, page_size, PROT_READ,
75 MAP_SHARED | MAP_FIXED, fd, 0);
76 if (addr != MAP_FAILED) {
77 tst_resm(TFAIL, "mmap into high region "
78 "succeeded unexpectedly");
79 munmap(addr, page_size);
80 close(fd);
81 continue;
82 }
83
84 if (errno != ENOMEM && errno != EINVAL) {
85 tst_resm(TFAIL | TERRNO, "mmap into high region "
86 "failed unexpectedly");
87 } else {
88 tst_resm(TPASS | TERRNO, "mmap into high region "
89 "failed as expected");
90 }
91
92 SAFE_CLOSE(cleanup, fd);
93 }
94
95 cleanup();
96 tst_exit();
97 }
98
setup(void)99 static void setup(void)
100 {
101 tst_require_root();
102
103 tst_tmpdir();
104
105 page_size = getpagesize();
106
107 TEST_PAUSE;
108 }
109
cleanup(void)110 static void cleanup(void)
111 {
112 tst_rmdir();
113 }
114