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// SPDX-License-Identifier: GPL-2.0
#include <sys/mman.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/time.h>
#include <sys/resource.h>
#ifndef MCL_ONFAULT
#define MCL_ONFAULT (MCL_FUTURE << 1)
#endif
static int test_limit(void)
{
int ret = 1;
struct rlimit lims;
void *map;
if (getrlimit(RLIMIT_MEMLOCK, &lims)) {
perror("getrlimit");
return ret;
}
if (mlockall(MCL_ONFAULT | MCL_FUTURE)) {
perror("mlockall");
return ret;
}
map = mmap(NULL, 2 * lims.rlim_max, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
if (map != MAP_FAILED)
printf("mmap should have failed, but didn't\n");
else {
ret = 0;
munmap(map, 2 * lims.rlim_max);
}
munlockall();
return ret;
}
int main(int argc, char **argv)
{
int ret = 0;
ret += test_limit();
return ret;
}
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