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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
b3b0d09c EM |
2 | #include <sys/mman.h> |
3 | #include <stdio.h> | |
4 | #include <unistd.h> | |
5 | #include <string.h> | |
6 | #include <sys/time.h> | |
7 | #include <sys/resource.h> | |
8 | ||
9 | #ifndef MCL_ONFAULT | |
10 | #define MCL_ONFAULT (MCL_FUTURE << 1) | |
11 | #endif | |
12 | ||
13 | static int test_limit(void) | |
14 | { | |
15 | int ret = 1; | |
16 | struct rlimit lims; | |
17 | void *map; | |
18 | ||
19 | if (getrlimit(RLIMIT_MEMLOCK, &lims)) { | |
20 | perror("getrlimit"); | |
21 | return ret; | |
22 | } | |
23 | ||
bff12468 | 24 | if (mlockall(MCL_ONFAULT | MCL_FUTURE)) { |
b3b0d09c EM |
25 | perror("mlockall"); |
26 | return ret; | |
27 | } | |
28 | ||
29 | map = mmap(NULL, 2 * lims.rlim_max, PROT_READ | PROT_WRITE, | |
70d1a4e6 | 30 | MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0); |
b3b0d09c EM |
31 | if (map != MAP_FAILED) |
32 | printf("mmap should have failed, but didn't\n"); | |
33 | else { | |
34 | ret = 0; | |
35 | munmap(map, 2 * lims.rlim_max); | |
36 | } | |
37 | ||
38 | munlockall(); | |
39 | return ret; | |
40 | } | |
41 | ||
42 | int main(int argc, char **argv) | |
43 | { | |
44 | int ret = 0; | |
45 | ||
46 | ret += test_limit(); | |
47 | return ret; | |
48 | } |