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/*
* This is a test case for:
*
* https://bugzilla.kernel.org/show_bug.cgi?id=219174
*/
#include <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/prctl.h>
#include <sys/psx_syscall.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int argc, char **argv)
{
void *handle = dlopen("./weaver.so", RTLD_NOW);
if (handle == NULL) {
perror("no weaver.so loaded");
exit(1);
}
pthread_t (*weaver_thread)(void) = dlsym(handle, "weaver_thread");
void (*weaver_setup)(void) = dlsym(handle, "weaver_setup");
int (*weaver_waitforit)(int n) = dlsym(handle, "weaver_waitforit");
void (*weaver_terminate)(void) = dlsym(handle, "weaver_terminate");
weaver_setup();
#define N_THREADS 37
long int i;
pthread_t th[N_THREADS];
for (i = 0; i < N_THREADS; i++) {
if (psx_syscall6(SYS_prctl, PR_SET_KEEPCAPS, i&1, 0, 0, 0, 0) != 0) {
perror((i&1) ? "failed to set keep-caps" :
"failed to reset keep-caps");
exit(1);
}
th[i] = weaver_thread();
int got = weaver_waitforit(i+1);
int want = (i&1) ? (3*(i+1)) : (2*(i+1));
printf("for %ld weaver.so launched threads, total=%d, wanted=%d\n",
i+1, got, want);
if (got != want) {
printf("FAILED\n");
exit(1);
}
}
weaver_terminate();
for (i = 0; i < N_THREADS; i++) {
pthread_join(th[i], NULL);
}
printf("PASSED\n");
exit(0);
}
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