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