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7be690ed8c
This isn't fixing a known issue, but more preparing for a potential PSX mechanism error. Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
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* This is a test case for:
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*
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* https://bugzilla.kernel.org/show_bug.cgi?id=219174
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*/
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#include <dlfcn.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/prctl.h>
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#include <sys/psx_syscall.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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int main(int argc, char **argv)
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{
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void *handle = dlopen("./weaver.so", RTLD_NOW);
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if (handle == NULL) {
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perror("no weaver.so loaded");
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exit(1);
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}
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pthread_t (*weaver_thread)(void) = dlsym(handle, "weaver_thread");
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void (*weaver_setup)(void) = dlsym(handle, "weaver_setup");
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int (*weaver_waitforit)(int n) = dlsym(handle, "weaver_waitforit");
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void (*weaver_terminate)(void) = dlsym(handle, "weaver_terminate");
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weaver_setup();
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#define N_THREADS 37
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long int i;
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pthread_t th[N_THREADS];
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for (i = 0; i < N_THREADS; i++) {
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if (psx_syscall6(SYS_prctl, PR_SET_KEEPCAPS, i&1, 0, 0, 0, 0) != 0) {
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perror((i&1) ? "failed to set keep-caps" :
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"failed to reset keep-caps");
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exit(1);
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}
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th[i] = weaver_thread();
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int got = weaver_waitforit(i+1);
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int want = (i&1) ? (3*(i+1)) : (2*(i+1));
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printf("for %ld weaver.so launched threads, total=%d, wanted=%d\n",
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i+1, got, want);
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if (got != want) {
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printf("FAILED\n");
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exit(1);
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}
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}
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weaver_terminate();
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for (i = 0; i < N_THREADS; i++) {
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pthread_join(th[i], NULL);
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}
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printf("PASSED\n");
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exit(0);
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}
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