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fa6ac760 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2014 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <sys/mman.h> | |
21 | ||
3ffd4af2 | 22 | #include "fd-util.h" |
fa6ac760 | 23 | #include "sigbus.h" |
3ffd4af2 | 24 | #include "util.h" |
349cc4a5 | 25 | #if HAVE_VALGRIND_VALGRIND_H |
af02b15a EV |
26 | #include <valgrind/valgrind.h> |
27 | #endif | |
fa6ac760 LP |
28 | |
29 | int main(int argc, char *argv[]) { | |
30 | _cleanup_close_ int fd = -1; | |
31 | char template[] = "/tmp/sigbus-test-XXXXXX"; | |
32 | void *addr = NULL; | |
33 | uint8_t *p; | |
34 | ||
349cc4a5 | 35 | #if HAVE_VALGRIND_VALGRIND_H |
af02b15a EV |
36 | if (RUNNING_ON_VALGRIND) |
37 | return EXIT_TEST_SKIP; | |
38 | #endif | |
39 | ||
d6d46cdd CR |
40 | #ifdef __SANITIZE_ADDRESS__ |
41 | return EXIT_TEST_SKIP; | |
42 | #endif | |
fa6ac760 LP |
43 | sigbus_install(); |
44 | ||
0c0cdb06 | 45 | assert_se(sigbus_pop(&addr) == 0); |
fa6ac760 LP |
46 | |
47 | assert_se((fd = mkostemp(template, O_RDWR|O_CREAT|O_EXCL)) >= 0); | |
48 | assert_se(unlink(template) >= 0); | |
aab7037d | 49 | assert_se(posix_fallocate(fd, 0, page_size() * 8) >= 0); |
fa6ac760 LP |
50 | |
51 | p = mmap(NULL, page_size() * 16, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); | |
52 | assert_se(p != MAP_FAILED); | |
53 | ||
54 | assert_se(sigbus_pop(&addr) == 0); | |
55 | ||
56 | p[0] = 0xFF; | |
57 | assert_se(sigbus_pop(&addr) == 0); | |
58 | ||
59 | p[page_size()] = 0xFF; | |
60 | assert_se(sigbus_pop(&addr) == 0); | |
61 | ||
62 | p[page_size()*8] = 0xFF; | |
63 | p[page_size()*8+1] = 0xFF; | |
64 | p[page_size()*10] = 0xFF; | |
65 | assert_se(sigbus_pop(&addr) > 0); | |
66 | assert_se(addr == p + page_size() * 8); | |
67 | assert_se(sigbus_pop(&addr) > 0); | |
68 | assert_se(addr == p + page_size() * 10); | |
69 | assert_se(sigbus_pop(&addr) == 0); | |
70 | ||
71 | sigbus_reset(); | |
72 | } |