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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
#include <linux/bpf.h>
#include "bpf/libbpf_internal.h"
#include "test_raw_tp_test_run.skel.h"
static int duration;
void test_raw_tp_test_run(void)
{
struct bpf_prog_test_run_attr test_attr = {};
int comm_fd = -1, err, nr_online, i, prog_fd;
__u64 args[2] = {0x1234ULL, 0x5678ULL};
int expected_retval = 0x1234 + 0x5678;
struct test_raw_tp_test_run *skel;
char buf[] = "new_name";
bool *online = NULL;
DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
.ctx_in = args,
.ctx_size_in = sizeof(args),
.flags = BPF_F_TEST_RUN_ON_CPU,
);
err = parse_cpu_mask_file("/sys/devices/system/cpu/online", &online,
&nr_online);
if (CHECK(err, "parse_cpu_mask_file", "err %d\n", err))
return;
skel = test_raw_tp_test_run__open_and_load();
if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
goto cleanup;
err = test_raw_tp_test_run__attach(skel);
if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
goto cleanup;
comm_fd = open("/proc/self/comm", O_WRONLY|O_TRUNC);
if (CHECK(comm_fd < 0, "open /proc/self/comm", "err %d\n", errno))
goto cleanup;
err = write(comm_fd, buf, sizeof(buf));
CHECK(err < 0, "task rename", "err %d", errno);
CHECK(skel->bss->count == 0, "check_count", "didn't increase\n");
CHECK(skel->data->on_cpu != 0xffffffff, "check_on_cpu", "got wrong value\n");
prog_fd = bpf_program__fd(skel->progs.rename);
test_attr.prog_fd = prog_fd;
test_attr.ctx_in = args;
test_attr.ctx_size_in = sizeof(__u64);
err = bpf_prog_test_run_xattr(&test_attr);
CHECK(err == 0, "test_run", "should fail for too small ctx\n");
test_attr.ctx_size_in = sizeof(args);
err = bpf_prog_test_run_xattr(&test_attr);
CHECK(err < 0, "test_run", "err %d\n", errno);
CHECK(test_attr.retval != expected_retval, "check_retval",
"expect 0x%x, got 0x%x\n", expected_retval, test_attr.retval);
for (i = 0; i < nr_online; i++) {
if (!online[i])
continue;
opts.cpu = i;
opts.retval = 0;
err = bpf_prog_test_run_opts(prog_fd, &opts);
CHECK(err < 0, "test_run_opts", "err %d\n", errno);
CHECK(skel->data->on_cpu != i, "check_on_cpu",
"expect %d got %d\n", i, skel->data->on_cpu);
CHECK(opts.retval != expected_retval,
"check_retval", "expect 0x%x, got 0x%x\n",
expected_retval, opts.retval);
}
/* invalid cpu ID should fail with ENXIO */
opts.cpu = 0xffffffff;
err = bpf_prog_test_run_opts(prog_fd, &opts);
CHECK(err >= 0 || errno != ENXIO,
"test_run_opts_fail",
"should failed with ENXIO\n");
/* non-zero cpu w/o BPF_F_TEST_RUN_ON_CPU should fail with EINVAL */
opts.cpu = 1;
opts.flags = 0;
err = bpf_prog_test_run_opts(prog_fd, &opts);
CHECK(err >= 0 || errno != EINVAL,
"test_run_opts_fail",
"should failed with EINVAL\n");
cleanup:
close(comm_fd);
test_raw_tp_test_run__destroy(skel);
free(online);
}
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