97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2020 Facebook */
|
|
#include <test_progs.h>
|
|
#include "test_subprogs.skel.h"
|
|
#include "test_subprogs_unused.skel.h"
|
|
|
|
struct toggler_ctx {
|
|
int fd;
|
|
bool stop;
|
|
};
|
|
|
|
static void *toggle_jit_harden(void *arg)
|
|
{
|
|
struct toggler_ctx *ctx = arg;
|
|
char two = '2';
|
|
char zero = '0';
|
|
|
|
while (!ctx->stop) {
|
|
lseek(ctx->fd, SEEK_SET, 0);
|
|
write(ctx->fd, &two, sizeof(two));
|
|
lseek(ctx->fd, SEEK_SET, 0);
|
|
write(ctx->fd, &zero, sizeof(zero));
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void test_subprogs_with_jit_harden_toggling(void)
|
|
{
|
|
struct toggler_ctx ctx;
|
|
pthread_t toggler;
|
|
int err;
|
|
unsigned int i, loop = 10;
|
|
|
|
ctx.fd = open("/proc/sys/net/core/bpf_jit_harden", O_RDWR);
|
|
if (!ASSERT_GE(ctx.fd, 0, "open bpf_jit_harden"))
|
|
return;
|
|
|
|
ctx.stop = false;
|
|
err = pthread_create(&toggler, NULL, toggle_jit_harden, &ctx);
|
|
if (!ASSERT_OK(err, "new toggler"))
|
|
goto out;
|
|
|
|
/* Make toggler thread to run */
|
|
usleep(1);
|
|
|
|
for (i = 0; i < loop; i++) {
|
|
struct test_subprogs *skel = test_subprogs__open_and_load();
|
|
|
|
if (!ASSERT_OK_PTR(skel, "skel open"))
|
|
break;
|
|
test_subprogs__destroy(skel);
|
|
}
|
|
|
|
ctx.stop = true;
|
|
pthread_join(toggler, NULL);
|
|
out:
|
|
close(ctx.fd);
|
|
}
|
|
|
|
static void test_subprogs_alone(void)
|
|
{
|
|
struct test_subprogs *skel;
|
|
struct test_subprogs_unused *skel2;
|
|
int err;
|
|
|
|
skel = test_subprogs__open_and_load();
|
|
if (!ASSERT_OK_PTR(skel, "skel_open"))
|
|
return;
|
|
|
|
err = test_subprogs__attach(skel);
|
|
if (!ASSERT_OK(err, "skel attach"))
|
|
goto cleanup;
|
|
|
|
usleep(1);
|
|
|
|
ASSERT_EQ(skel->bss->res1, 12, "res1");
|
|
ASSERT_EQ(skel->bss->res2, 17, "res2");
|
|
ASSERT_EQ(skel->bss->res3, 19, "res3");
|
|
ASSERT_EQ(skel->bss->res4, 36, "res4");
|
|
|
|
skel2 = test_subprogs_unused__open_and_load();
|
|
ASSERT_OK_PTR(skel2, "unused_progs_skel");
|
|
test_subprogs_unused__destroy(skel2);
|
|
|
|
cleanup:
|
|
test_subprogs__destroy(skel);
|
|
}
|
|
|
|
void test_subprogs(void)
|
|
{
|
|
if (test__start_subtest("subprogs_alone"))
|
|
test_subprogs_alone();
|
|
if (test__start_subtest("subprogs_and_jit_harden"))
|
|
test_subprogs_with_jit_harden_toggling();
|
|
}
|