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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
fa6ac760 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2014 Lennart Poettering | |
fa6ac760 LP |
6 | ***/ |
7 | ||
8 | #include <sys/mman.h> | |
9 | ||
3ffd4af2 | 10 | #include "fd-util.h" |
fa6ac760 | 11 | #include "sigbus.h" |
3ffd4af2 | 12 | #include "util.h" |
349cc4a5 | 13 | #if HAVE_VALGRIND_VALGRIND_H |
af02b15a EV |
14 | #include <valgrind/valgrind.h> |
15 | #endif | |
fa6ac760 LP |
16 | |
17 | int main(int argc, char *argv[]) { | |
18 | _cleanup_close_ int fd = -1; | |
19 | char template[] = "/tmp/sigbus-test-XXXXXX"; | |
20 | void *addr = NULL; | |
21 | uint8_t *p; | |
22 | ||
349cc4a5 | 23 | #if HAVE_VALGRIND_VALGRIND_H |
af02b15a EV |
24 | if (RUNNING_ON_VALGRIND) |
25 | return EXIT_TEST_SKIP; | |
26 | #endif | |
27 | ||
d6d46cdd CR |
28 | #ifdef __SANITIZE_ADDRESS__ |
29 | return EXIT_TEST_SKIP; | |
30 | #endif | |
fa6ac760 LP |
31 | sigbus_install(); |
32 | ||
0c0cdb06 | 33 | assert_se(sigbus_pop(&addr) == 0); |
fa6ac760 LP |
34 | |
35 | assert_se((fd = mkostemp(template, O_RDWR|O_CREAT|O_EXCL)) >= 0); | |
36 | assert_se(unlink(template) >= 0); | |
aab7037d | 37 | assert_se(posix_fallocate(fd, 0, page_size() * 8) >= 0); |
fa6ac760 LP |
38 | |
39 | p = mmap(NULL, page_size() * 16, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); | |
40 | assert_se(p != MAP_FAILED); | |
41 | ||
42 | assert_se(sigbus_pop(&addr) == 0); | |
43 | ||
44 | p[0] = 0xFF; | |
45 | assert_se(sigbus_pop(&addr) == 0); | |
46 | ||
47 | p[page_size()] = 0xFF; | |
48 | assert_se(sigbus_pop(&addr) == 0); | |
49 | ||
50 | p[page_size()*8] = 0xFF; | |
51 | p[page_size()*8+1] = 0xFF; | |
52 | p[page_size()*10] = 0xFF; | |
53 | assert_se(sigbus_pop(&addr) > 0); | |
54 | assert_se(addr == p + page_size() * 8); | |
55 | assert_se(sigbus_pop(&addr) > 0); | |
56 | assert_se(addr == p + page_size() * 10); | |
57 | assert_se(sigbus_pop(&addr) == 0); | |
58 | ||
59 | sigbus_reset(); | |
60 | } |