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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
#include "fentry_test.lskel.h"
static int fentry_test(struct fentry_test_lskel *fentry_skel)
{
int err, prog_fd, i;
int link_fd;
__u64 *result;
LIBBPF_OPTS(bpf_test_run_opts, topts);
err = fentry_test_lskel__attach(fentry_skel);
if (!ASSERT_OK(err, "fentry_attach"))
return err;
/* Check that already linked program can't be attached again. */
link_fd = fentry_test_lskel__test1__attach(fentry_skel);
if (!ASSERT_LT(link_fd, 0, "fentry_attach_link"))
return -1;
prog_fd = fentry_skel->progs.test1.prog_fd;
err = bpf_prog_test_run_opts(prog_fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "test_run");
result = (__u64 *)fentry_skel->bss;
for (i = 0; i < sizeof(*fentry_skel->bss) / sizeof(__u64); i++) {
if (!ASSERT_EQ(result[i], 1, "fentry_result"))
return -1;
}
fentry_test_lskel__detach(fentry_skel);
/* zero results for re-attach test */
memset(fentry_skel->bss, 0, sizeof(*fentry_skel->bss));
return 0;
}
void test_fentry_test(void)
{
struct fentry_test_lskel *fentry_skel = NULL;
int err;
fentry_skel = fentry_test_lskel__open_and_load();
if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
goto cleanup;
err = fentry_test(fentry_skel);
if (!ASSERT_OK(err, "fentry_first_attach"))
goto cleanup;
err = fentry_test(fentry_skel);
ASSERT_OK(err, "fentry_second_attach");
cleanup:
fentry_test_lskel__destroy(fentry_skel);
}
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