#include <sys/syscall.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <unistd.h>
#include <malloc.h>
#include <stdlib.h>
#include <test_progs.h>
#include "cgroup_helpers.h"
#include "iters.skel.h"
#include "iters_state_safety.skel.h"
#include "iters_looping.skel.h"
#include "iters_num.skel.h"
#include "iters_testmod.skel.h"
#include "iters_testmod_seq.skel.h"
#include "iters_task_vma.skel.h"
#include "iters_task.skel.h"
#include "iters_css_task.skel.h"
#include "iters_css.skel.h"
#include "iters_task_failure.skel.h"
static void subtest_num_iters(void)
{
struct iters_num *skel;
int err;
skel = iters_num__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
return;
err = iters_num__attach(skel);
if (!ASSERT_OK(err, "skel_attach"))
goto cleanup;
usleep(1);
iters_num__detach(skel);
#define VALIDATE_CASE(case_name) \
ASSERT_EQ(skel->bss->res_##case_name, \
skel->rodata->exp_##case_name, \
#case_name)
VALIDATE_CASE(empty_zero);
VALIDATE_CASE(empty_int_min);
VALIDATE_CASE(empty_int_max);
VALIDATE_CASE(empty_minus_one);
VALIDATE_CASE(simple_sum);
VALIDATE_CASE(neg_sum);
VALIDATE_CASE(very_neg_sum);
VALIDATE_CASE(neg_pos_sum);
VALIDATE_CASE(invalid_range);
VALIDATE_CASE(max_range);
VALIDATE_CASE(e2big_range);
VALIDATE_CASE(succ_elem_cnt);
VALIDATE_CASE(overfetched_elem_cnt);
VALIDATE_CASE(fail_elem_cnt);
#undef VALIDATE_CASE
cleanup:
iters_num__destroy(skel);
}
static void subtest_testmod_seq_iters(void)
{
struct iters_testmod_seq *skel;
int err;
if (!env.has_testmod) {
test__skip();
return;
}
skel = iters_testmod_seq__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
return;
err = iters_testmod_seq__attach(skel);
if (!ASSERT_OK(err, "skel_attach"))
goto cleanup;
usleep(1);
iters_testmod_seq__detach(skel);
#define VALIDATE_CASE(case_name) \
ASSERT_EQ(skel->bss->res_##case_name, \
skel->rodata->exp_##case_name, \
#case_name)
VALIDATE_CASE(empty);
VALIDATE_CASE(full);
VALIDATE_CASE(truncated);
#undef VALIDATE_CASE
cleanup:
iters_testmod_seq__destroy(skel);
}
static void subtest_task_vma_iters(void)
{
unsigned long start, end, bpf_iter_start, bpf_iter_end;
struct iters_task_vma *skel;
char rest_of_line[1000];
unsigned int seen;
FILE *f = NULL;
int err;
skel = iters_task_vma__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
return;
skel->bss->target_pid = getpid();
err = iters_task_vma__attach(skel);
if (!ASSERT_OK(err, "skel_attach"))
goto cleanup;
getpgid(skel->bss->target_pid);
iters_task_vma__detach(skel);
if (!ASSERT_GT(skel->bss->vmas_seen, 0, "vmas_seen_gt_zero"))
goto cleanup;
f = fopen("/proc/self/maps", "r");
if (!ASSERT_OK_PTR(f, "proc_maps_fopen"))
goto cleanup;
seen = 0;
while (fscanf(f, "%lx-%lx %[^\n]\n", &start, &end, rest_of_line) == 3) {
if (strstr(rest_of_line, "[vsyscall]"))
continue;
bpf_iter_start = skel->bss->vm_ranges[seen].vm_start;
bpf_iter_end = skel->bss->vm_ranges[seen].vm_end;
ASSERT_EQ(bpf_iter_start, start, "vma->vm_start match");
ASSERT_EQ(bpf_iter_end, end, "vma->vm_end match");
seen++;
}
if (!ASSERT_EQ(skel->bss->vmas_seen, seen, "vmas_seen_eq"))
goto cleanup;
cleanup:
if (f)
fclose(f);
iters_task_vma__destroy(skel);
}
static pthread_mutex_t do_nothing_mutex;
static void *do_nothing_wait(void *arg)
{
pthread_mutex_lock(&do_nothing_mutex);
pthread_mutex_unlock(&do_nothing_mutex);
pthread_exit(arg);
}
#define thread_num 2
static void subtest_task_iters(void)
{
struct iters_task *skel = NULL;
pthread_t thread_ids[thread_num];
void *ret;
int err;
skel = iters_task__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
goto cleanup;
skel->bss->target_pid = getpid();
err = iters_task__attach(skel);
if (!ASSERT_OK(err, "iters_task__attach"))
goto cleanup;
pthread_mutex_lock(&do_nothing_mutex);
for (int i = 0; i < thread_num; i++)
ASSERT_OK(pthread_create(&thread_ids[i], NULL, &do_nothing_wait, NULL),
"pthread_create");
syscall(SYS_getpgid);
iters_task__detach(skel);
ASSERT_EQ(skel->bss->procs_cnt, 1, "procs_cnt");
ASSERT_EQ(skel->bss->threads_cnt, thread_num + 2, "threads_cnt");
ASSERT_EQ(skel->bss->proc_threads_cnt, thread_num + 2, "proc_threads_cnt");
ASSERT_EQ(skel->bss->invalid_cnt, 0, "invalid_cnt");
pthread_mutex_unlock(&do_nothing_mutex);
for (int i = 0; i < thread_num; i++)
ASSERT_OK(pthread_join(thread_ids[i], &ret), "pthread_join");
cleanup:
iters_task__destroy(skel);
}
extern int stack_mprotect(void);
static void subtest_css_task_iters(void)
{
struct iters_css_task *skel = NULL;
int err, cg_fd, cg_id;
const char *cgrp_path = "/cg1";
err = setup_cgroup_environment();
if (!ASSERT_OK(err, "setup_cgroup_environment"))
goto cleanup;
cg_fd = create_and_get_cgroup(cgrp_path);
if (!ASSERT_GE(cg_fd, 0, "create_and_get_cgroup"))
goto cleanup;
cg_id = get_cgroup_id(cgrp_path);
err = join_cgroup(cgrp_path);
if (!ASSERT_OK(err, "join_cgroup"))
goto cleanup;
skel = iters_css_task__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
goto cleanup;
skel->bss->target_pid = getpid();
skel->bss->cg_id = cg_id;
err = iters_css_task__attach(skel);
if (!ASSERT_OK(err, "iters_task__attach"))
goto cleanup;
err = stack_mprotect();
if (!ASSERT_EQ(err, -1, "stack_mprotect") ||
!ASSERT_EQ(errno, EPERM, "stack_mprotect"))
goto cleanup;
iters_css_task__detach(skel);
ASSERT_EQ(skel->bss->css_task_cnt, 1, "css_task_cnt");
cleanup:
cleanup_cgroup_environment();
iters_css_task__destroy(skel);
}
static void subtest_css_iters(void)
{
struct iters_css *skel = NULL;
struct {
const char *path;
int fd;
} cgs[] = {
{ "/cg1" },
{ "/cg1/cg2" },
{ "/cg1/cg2/cg3" },
{ "/cg1/cg2/cg3/cg4" },
{ "/cg1/cg5" },
{ "/cg1/cg5/cg6" },
{ "/cg1/cg7" },
{ "/cg1/cg7/cg8" },
{ "/cg1/cg7/cg8/cg9" },
};
int err, cg_nr = ARRAY_SIZE(cgs);
int i;
err = setup_cgroup_environment();
if (!ASSERT_OK(err, "setup_cgroup_environment"))
goto cleanup;
for (i = 0; i < cg_nr; i++) {
cgs[i].fd = create_and_get_cgroup(cgs[i].path);
if (!ASSERT_GE(cgs[i].fd, 0, "create_and_get_cgroup"))
goto cleanup;
}
skel = iters_css__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
goto cleanup;
skel->bss->target_pid = getpid();
skel->bss->root_cg_id = get_cgroup_id(cgs[0].path);
skel->bss->leaf_cg_id = get_cgroup_id(cgs[cg_nr - 1].path);
err = iters_css__attach(skel);
if (!ASSERT_OK(err, "iters_task__attach"))
goto cleanup;
syscall(SYS_getpgid);
ASSERT_EQ(skel->bss->pre_order_cnt, cg_nr, "pre_order_cnt");
ASSERT_EQ(skel->bss->first_cg_id, get_cgroup_id(cgs[0].path), "first_cg_id");
ASSERT_EQ(skel->bss->post_order_cnt, cg_nr, "post_order_cnt");
ASSERT_EQ(skel->bss->last_cg_id, get_cgroup_id(cgs[0].path), "last_cg_id");
ASSERT_EQ(skel->bss->children_cnt, 3, "children_cnt");
ASSERT_EQ(skel->bss->tree_high, 3, "tree_high");
iters_css__detach(skel);
cleanup:
cleanup_cgroup_environment();
iters_css__destroy(skel);
}
void test_iters(void)
{
RUN_TESTS(iters_state_safety);
RUN_TESTS(iters_looping);
RUN_TESTS(iters);
RUN_TESTS(iters_css_task);
if (env.has_testmod) {
RUN_TESTS(iters_testmod);
RUN_TESTS(iters_testmod_seq);
}
if (test__start_subtest("num"))
subtest_num_iters();
if (test__start_subtest("testmod_seq"))
subtest_testmod_seq_iters();
if (test__start_subtest("task_vma"))
subtest_task_vma_iters();
if (test__start_subtest("task"))
subtest_task_iters();
if (test__start_subtest("css_task"))
subtest_css_task_iters();
if (test__start_subtest("css"))
subtest_css_iters();
RUN_TESTS(iters_task_failure);
}
