// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
#include <test_progs.h>
#include <sys/mman.h>
#include "mmap_inner_array.skel.h"
void test_mmap_inner_array(void)
{
const long page_size = sysconf(_SC_PAGE_SIZE);
struct mmap_inner_array *skel;
int inner_array_fd, err;
void *tmp;
__u64 *val;
skel = mmap_inner_array__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
return;
inner_array_fd = bpf_map__fd(skel->maps.inner_array);
tmp = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, inner_array_fd, 0);
if (!ASSERT_OK_PTR(tmp, "inner array mmap"))
goto out;
val = (void *)tmp;
err = mmap_inner_array__attach(skel);
if (!ASSERT_OK(err, "attach"))
goto out_unmap;
skel->bss->pid = getpid();
usleep(1);
/* pid is set, pid_match == true and outer_map_match == false */
ASSERT_TRUE(skel->bss->pid_match, "pid match 1");
ASSERT_FALSE(skel->bss->outer_map_match, "outer map match 1");
ASSERT_FALSE(skel->bss->done, "done 1");
ASSERT_EQ(*val, 0, "value match 1");
err = bpf_map__update_elem(skel->maps.outer_map,
&skel->bss->pid, sizeof(skel->bss->pid),
&inner_array_fd, sizeof(inner_array_fd),
BPF_ANY);
if (!ASSERT_OK(err, "update elem"))
goto out_unmap;
usleep(1);
/* outer map key is set, outer_map_match == true */
ASSERT_TRUE(skel->bss->pid_match, "pid match 2");
ASSERT_TRUE(skel->bss->outer_map_match, "outer map match 2");
ASSERT_TRUE(skel->bss->done, "done 2");
ASSERT_EQ(*val, skel->data->match_value, "value match 2");
out_unmap:
munmap(tmp, page_size);
out:
mmap_inner_array__destroy(skel);
}