// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */
#define _GNU_SOURCE
#include <pthread.h>
#include <sched.h>
#include <sys/syscall.h>
#include <sys/mman.h>
#include <unistd.h>
#include <test_progs.h>
#include <network_helpers.h>
#include <bpf/btf.h>
#include "test_bpf_cookie.skel.h"
#include "kprobe_multi.skel.h"
#include "uprobe_multi.skel.h"
/* uprobe attach point */
static noinline void trigger_func(void)
{
asm volatile ("");
}
static void kprobe_subtest(struct test_bpf_cookie *skel)
{
DECLARE_LIBBPF_OPTS(bpf_kprobe_opts, opts);
struct bpf_link *link1 = NULL, *link2 = NULL;
struct bpf_link *retlink1 = NULL, *retlink2 = NULL;
/* attach two kprobes */
opts.bpf_cookie = 0x1;
opts.retprobe = false;
link1 = bpf_program__attach_kprobe_opts(skel->progs.handle_kprobe,
SYS_NANOSLEEP_KPROBE_NAME, &opts);
if (!ASSERT_OK_PTR(link1, "link1"))
goto cleanup;
opts.bpf_cookie = 0x2;
opts.retprobe = false;
link2 = bpf_program__attach_kprobe_opts(skel->progs.handle_kprobe,
SYS_NANOSLEEP_KPROBE_NAME, &opts);
if (!ASSERT_OK_PTR(link2, "link2"))
goto cleanup;
/* attach two kretprobes */
opts.bpf_cookie = 0x10;
opts.retprobe = true;
retlink1 = bpf_program__attach_kprobe_opts(skel->progs.handle_kretprobe,
SYS_NANOSLEEP_KPROBE_NAME, &opts);
if (!ASSERT_OK_PTR(retlink1, "retlink1"))
goto cleanup;
opts.bpf_cookie = 0x20;
opts.retprobe = true;
retlink2 = bpf_program__attach_kprobe_opts(skel->progs.handle_kretprobe,
SYS_NANOSLEEP_KPROBE_NAME, &opts);
if (!ASSERT_OK_PTR(retlink2, "retlink2"))
goto cleanup;
/* trigger kprobe && kretprobe */
usleep(1);
ASSERT_EQ(skel->bss->kprobe_res, 0x1 | 0x2, "kprobe_res");
ASSERT_EQ(skel->bss->kretprobe_res, 0x10 | 0x20, "kretprobe_res");
cleanup:
bpf_link__destroy(link1);
bpf_link__destroy(link2);
bpf_link__destroy(retlink1);
bpf_link__destroy(retlink2);
}
static void kprobe_multi_test_run(struct kprobe_multi *skel)
{
LIBBPF_OPTS(bpf_test_run_opts, topts);
int err, prog_fd;
prog_fd = bpf_program__fd(skel->progs.trigger);
err = bpf_prog_test_run_opts(prog_fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "test_run");
ASSERT_EQ(skel->bss->kprobe_test1_result, 1, "kprobe_test1_result");
ASSERT_EQ(skel->bss->kprobe_test2_result, 1, "kprobe_test2_result");
ASSERT_EQ(skel->bss->kprobe_test3_result, 1, "kprobe_test3_result");
ASSERT_EQ(skel->bss->kprobe_test4_result, 1, "kprobe_test4_result");
ASSERT_EQ(skel->bss->kprobe_test5_result, 1, "kprobe_test5_result");
ASSERT_EQ(skel->bss->kprobe_test6_result, 1, "kprobe_test6_result");
ASSERT_EQ(skel->bss->kprobe_test7_result, 1, "kprobe_test7_result");
ASSERT_EQ(skel->bss->kprobe_test8_result, 1, "kprobe_test8_result");
ASSERT_EQ(skel->bss->kretprobe_test1_result, 1, "kretprobe_test1_result");
ASSERT_EQ(skel->bss->kretprobe_test2_result, 1, "kretprobe_test2_result");
ASSERT_EQ(skel->bss->kretprobe_test3_result, 1, "kretprobe_test3_result");
ASSERT_EQ(skel->bss->kretprobe_test4_result, 1, "kretprobe_test4_result");
ASSERT_EQ(skel->bss->kretprobe_test5_result, 1, "kretprobe_test5_result");
ASSERT_EQ(skel->bss->kretprobe_test6_result, 1, "kretprobe_test6_result");
ASSERT_EQ(skel->bss->kretprobe_test7_result, 1, "kretprobe_test7_result");
ASSERT_EQ(skel->bss->kretprobe_test8_result, 1, "kretprobe_test8_result");
}
static void kprobe_multi_link_api_subtest(void)
{
int prog_fd, link1_fd = -1, link2_fd = -1;
struct kprobe_multi *skel = NULL;
LIBBPF_OPTS(bpf_link_create_opts, opts);
unsigned long long addrs[8];
__u64 cookies[8];
if (!ASSERT_OK(load_kallsyms(), "load_kallsyms"))
goto cleanup;
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
skel->bss->pid = getpid();
skel->bss->test_cookie = true;
#define GET_ADDR(__sym, __addr) ({ \
__addr = ksym_get_addr(__sym); \
if (!ASSERT_NEQ(__addr, 0, "ksym_get_addr " #__sym)) \
goto cleanup; \
})
GET_ADDR("bpf_fentry_test1", addrs[0]);
GET_ADDR("bpf_fentry_test3", addrs[1]);
GET_ADDR("bpf_fentry_test4", addrs[2]);
GET_ADDR("bpf_fentry_test5", addrs[3]);
GET_ADDR("bpf_fentry_test6", addrs[4]);
GET_ADDR("bpf_fentry_test7", addrs[5]);
GET_ADDR("bpf_fentry_test2", addrs[6]);
GET_ADDR("bpf_fentry_test8", addrs[7]);
#undef GET_ADDR
cookies[0] = 1; /* bpf_fentry_test1 */
cookies[1] = 2; /* bpf_fentry_test3 */
cookies[2] = 3; /* bpf_fentry_test4 */
cookies[3] = 4; /* bpf_fentry_test5 */
cookies[4] = 5; /* bpf_fentry_test6 */
cookies[5] = 6; /* bpf_fentry_test7 */
cookies[6] = 7; /* bpf_fentry_test2 */
cookies[7] = 8; /* bpf_fentry_test8 */
opts.kprobe_multi.addrs = (const unsigned long *) &addrs;
opts.kprobe_multi.cnt = ARRAY_SIZE(addrs);
opts.kprobe_multi.cookies = (const __u64 *) &cookies;
prog_fd = bpf_program__fd(skel->progs.test_kprobe);
link1_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_KPROBE_MULTI, &opts);
if (!ASSERT_GE(link1_fd, 0, "link1_fd"))
goto cleanup;
cookies[0] = 8; /* bpf_fentry_test1 */
cookies[1] = 7; /* bpf_fentry_test3 */
cookies[2] = 6; /* bpf_fentry_test4 */
cookies[3] = 5; /* bpf_fentry_test5 */
cookies[4] = 4; /* bpf_fentry_test6 */
cookies[5] = 3; /* bpf_fentry_test7 */
cookies[6] = 2; /* bpf_fentry_test2 */
cookies[7] = 1; /* bpf_fentry_test8 */
opts.kprobe_multi.flags = BPF_F_KPROBE_MULTI_RETURN;
prog_fd = bpf_program__fd(skel->progs.test_kretprobe);
link2_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_KPROBE_MULTI, &opts);
if (!ASSERT_GE(link2_fd, 0, "link2_fd"))
goto cleanup;
kprobe_multi_test_run(skel);
cleanup:
close(link1_fd);
close(link2_fd);
kprobe_multi__destroy(skel);
}
static void kprobe_multi_attach_api_subtest(void)
{
struct bpf_link *link1 = NULL, *link2 = NULL;
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
LIBBPF_OPTS(bpf_test_run_opts, topts);
struct kprobe_multi *skel = NULL;
const char *syms[8] = {
"bpf_fentry_test1",
"bpf_fentry_test3",
"bpf_fentry_test4",
"bpf_fentry_test5",
"bpf_fentry_test6",
"bpf_fentry_test7",
"bpf_fentry_test2",
"bpf_fentry_test8",
};
__u64 cookies[8];
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
skel->bss->pid = getpid();
skel->bss->test_cookie = true;
cookies[0] = 1; /* bpf_fentry_test1 */
cookies[1] = 2; /* bpf_fentry_test3 */
cookies[2] = 3; /* bpf_fentry_test4 */
cookies[3] = 4; /* bpf_fentry_test5 */
cookies[4] = 5; /* bpf_fentry_test6 */
cookies[5] = 6; /* bpf_fentry_test7 */
cookies[6] = 7; /* bpf_fentry_test2 */
cookies[7] = 8; /* bpf_fentry_test8 */
opts.syms = syms;
opts.cnt = ARRAY_SIZE(syms);
opts.cookies = cookies;
link1 = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe,
NULL, &opts);
if (!ASSERT_OK_PTR(link1, "bpf_program__attach_kprobe_multi_opts"))
goto cleanup;
cookies[0] = 8; /* bpf_fentry_test1 */
cookies[1] = 7; /* bpf_fentry_test3 */
cookies[2] = 6; /* bpf_fentry_test4 */
cookies[3] = 5; /* bpf_fentry_test5 */
cookies[4] = 4; /* bpf_fentry_test6 */
cookies[5] = 3; /* bpf_fentry_test7 */
cookies[6] = 2; /* bpf_fentry_test2 */
cookies[7] = 1; /* bpf_fentry_test8 */
opts.retprobe = true;
link2 = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kretprobe,
NULL, &opts);
if (!ASSERT_OK_PTR(link2, "bpf_program__attach_kprobe_multi_opts"))
goto cleanup;
kprobe_multi_test_run(skel);
cleanup:
bpf_link__destroy(link2);
bpf_link__destroy(link1);
kprobe_multi__destroy(skel);
}
/* defined in prog_tests/uprobe_multi_test.c */
void uprobe_multi_func_1(void);
void uprobe_multi_func_2(void);
void uprobe_multi_func_3(void);
static void uprobe_multi_test_run(struct uprobe_multi *skel)
{
skel->bss->uprobe_multi_func_1_addr = (__u64) uprobe_multi_func_1;
skel->bss->uprobe_multi_func_2_addr = (__u64) uprobe_multi_func_2;
skel->bss->uprobe_multi_func_3_addr = (__u64) uprobe_multi_func_3;
skel->bss->pid = getpid();
skel->bss->test_cookie = true;
uprobe_multi_func_1();
uprobe_multi_func_2();
uprobe_multi_func_3();
ASSERT_EQ(skel->bss->uprobe_multi_func_1_result, 1, "uprobe_multi_func_1_result");
ASSERT_EQ(skel->bss->uprobe_multi_func_2_result, 1, "uprobe_multi_func_2_result");
ASSERT_EQ(skel->bss->uprobe_multi_func_3_result, 1, "uprobe_multi_func_3_result");
ASSERT_EQ(skel->bss->uretprobe_multi_func_1_result, 1, "uretprobe_multi_func_1_result");
ASSERT_EQ(skel->bss->uretprobe_multi_func_2_result, 1, "uretprobe_multi_func_2_result");
ASSERT_EQ(skel->bss->uretprobe_multi_func_3_result, 1, "uretprobe_multi_func_3_result");
}
static void uprobe_multi_attach_api_subtest(void)
{
struct bpf_link *link1 = NULL, *link2 = NULL;
struct uprobe_multi *skel = NULL;
LIBBPF_OPTS(bpf_uprobe_multi_opts, opts);
const char *syms[3] = {
"uprobe_multi_func_1",
"uprobe_multi_func_2",
"uprobe_multi_func_3",
};
__u64 cookies[3];
cookies[0] = 3; /* uprobe_multi_func_1 */
cookies[1] = 1; /* uprobe_multi_func_2 */
cookies[2] = 2; /* uprobe_multi_func_3 */
opts.syms = syms;
opts.cnt = ARRAY_SIZE(syms);
opts.cookies = &cookies[0];
skel = uprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "uprobe_multi"))
goto cleanup;
link1 = bpf_program__attach_uprobe_multi(skel->progs.uprobe, -1,
"/proc/self/exe", NULL, &opts);
if (!ASSERT_OK_PTR(link1, "bpf_program__attach_uprobe_multi"))
goto cleanup;
cookies[0] = 2; /* uprobe_multi_func_1 */
cookies[1] = 3; /* uprobe_multi_func_2 */
cookies[2] = 1; /* uprobe_multi_func_3 */
opts.retprobe = true;
link2 = bpf_program__attach_uprobe_multi(skel->progs.uretprobe, -1,
"/proc/self/exe", NULL, &opts);
if (!ASSERT_OK_PTR(link2, "bpf_program__attach_uprobe_multi_retprobe"))
goto cleanup;
uprobe_multi_test_run(skel);
cleanup:
bpf_link__destroy(link2);
bpf_link__destroy(link1);
uprobe_multi__destroy(skel);
}
static void uprobe_subtest(struct test_bpf_cookie *skel)
{
DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, opts);
struct bpf_link *link1 = NULL, *link2 = NULL;
struct bpf_link *retlink1 = NULL, *retlink2 = NULL;
ssize_t uprobe_offset;
uprobe_offset = get_uprobe_offset(&trigger_func);
if (!ASSERT_GE(uprobe_offset, 0, "uprobe_offset"))
goto cleanup;
/* attach two uprobes */
opts.bpf_cookie = 0x100;
opts.retprobe = false;
link1 = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe, 0 /* self pid */,
"/proc/self/exe", uprobe_offset, &opts);
if (!ASSERT_OK_PTR(link1, "link1"))
goto cleanup;
opts.bpf_cookie = 0x200;
opts.retprobe = false;
link2 = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe, -1 /* any pid */,
"/proc/self/exe", uprobe_offset, &opts);
if (!ASSERT_OK_PTR(link2, "link2"))
goto cleanup;
/* attach two uretprobes */
opts.bpf_cookie = 0x1000;
opts.retprobe = true;
retlink1 = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe, -1 /* any pid */,
"/proc/self/exe", uprobe_offset, &opts);
if (!ASSERT_OK_PTR(retlink1, "retlink1"))
goto cleanup;
opts.bpf_cookie = 0x2000;
opts.retprobe = true;
retlink2 = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe, 0 /* self pid */,
"/proc/self/exe", uprobe_offset, &opts);
if (!ASSERT_OK_PTR(retlink2, "retlink2"))
goto cleanup;
/* trigger uprobe && uretprobe */
trigger_func();
ASSERT_EQ(skel->bss->uprobe_res, 0x100 | 0x200, "uprobe_res");
ASSERT_EQ(skel->bss->uretprobe_res, 0x1000 | 0x2000, "uretprobe_res");
cleanup:
bpf_link__destroy(link1);
bpf_link__destroy(link2);
bpf_link__destroy(retlink1);
bpf_link__destroy(retlink2);
}
static void tp_subtest(struct test_bpf_cookie *skel)
{
DECLARE_LIBBPF_OPTS(bpf_tracepoint_opts, opts);
struct bpf_link *link1 = NULL, *link2 = NULL, *link3 = NULL;
/* attach first tp prog */
opts.bpf_cookie = 0x10000;
link1 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp1,
"syscalls", "sys_enter_nanosleep", &opts);
if (!ASSERT_OK_PTR(link1, "link1"))
goto cleanup;
/* attach second tp prog */
opts.bpf_cookie = 0x20000;
link2 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp2,
"syscalls", "sys_enter_nanosleep", &opts);
if (!ASSERT_OK_PTR(link2, "link2"))
goto cleanup;
/* trigger tracepoints */
usleep(1);
ASSERT_EQ(skel->bss->tp_res, 0x10000 | 0x20000, "tp_res1");
/* now we detach first prog and will attach third one, which causes
* two internal calls to bpf_prog_array_copy(), shuffling
* bpf_prog_array_items around. We test here that we don't lose track
* of associated bpf_cookies.
*/
bpf_link__destroy(link1);
link1 = NULL;
kern_sync_rcu();
skel->bss->tp_res = 0;
/* attach third tp prog */
opts.bpf_cookie = 0x40000;
link3 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp3,
"syscalls", "sys_enter_nanosleep", &opts);
if (!ASSERT_OK_PTR(link3, "link3"))
goto cleanup;
/* trigger tracepoints */
usleep(1);
ASSERT_EQ(skel->bss->tp_res, 0x20000 | 0x40000, "tp_res2");
cleanup:
bpf_link__destroy(link1);
bpf_link__destroy(link2);
bpf_link__destroy(link3);
}
static void burn_cpu(void)
{
volatile int j = 0;
cpu_set_t cpu_set;
int i, err;
/* generate some branches on cpu 0 */
CPU_ZERO(&cpu_set);
CPU_SET(0, &cpu_set);
err = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set), &cpu_set);
ASSERT_OK(err, "set_thread_affinity");
/* spin the loop for a while (random high number) */
for (i = 0; i < 1000000; ++i)
++j;
}
static void pe_subtest(struct test_bpf_cookie *skel)
{
DECLARE_LIBBPF_OPTS(bpf_perf_event_opts, opts);
struct bpf_link *link = NULL;
struct perf_event_attr attr;
int pfd = -1;
/* create perf event */
memset(&attr, 0, sizeof(attr));
attr.size = sizeof(attr);
attr.type = PERF_TYPE_SOFTWARE;
attr.config = PERF_COUNT_SW_CPU_CLOCK;
attr.freq = 1;
attr.sample_freq = 10000;
pfd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, PERF_FLAG_FD_CLOEXEC);
if (!ASSERT_GE(pfd, 0, "perf_fd"))
goto cleanup;
opts.bpf_cookie = 0x100000;
link = bpf_program__attach_perf_event_opts(skel->progs.handle_pe, pfd, &opts);
if (!ASSERT_OK_PTR(link, "link1"))
goto cleanup;
burn_cpu(); /* trigger BPF prog */
ASSERT_EQ(skel->bss->pe_res, 0x100000, "pe_res1");
/* prevent bpf_link__destroy() closing pfd itself */
bpf_link__disconnect(link);
/* close BPF link's FD explicitly */
close(bpf_link__fd(link));
/* free up memory used by struct bpf_link */
bpf_link__destroy(link);
link = NULL;
kern_sync_rcu();
skel->bss->pe_res = 0;
opts.bpf_cookie = 0x200000;
link = bpf_program__attach_perf_event_opts(skel->progs.handle_pe, pfd, &opts);
if (!ASSERT_OK_PTR(link, "link2"))
goto cleanup;
burn_cpu(); /* trigger BPF prog */
ASSERT_EQ(skel->bss->pe_res, 0x200000, "pe_res2");
cleanup:
close(pfd);
bpf_link__destroy(link);
}
static void tracing_subtest(struct test_bpf_cookie *skel)
{
__u64 cookie;
int prog_fd;
int fentry_fd = -1, fexit_fd = -1, fmod_ret_fd = -1;
LIBBPF_OPTS(bpf_test_run_opts, opts);
LIBBPF_OPTS(bpf_link_create_opts, link_opts);
skel->bss->fentry_res = 0;
skel->bss->fexit_res = 0;
cookie = 0x10000000000000L;
prog_fd = bpf_program__fd(skel->progs.fentry_test1);
link_opts.tracing.cookie = cookie;
fentry_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_FENTRY, &link_opts);
if (!ASSERT_GE(fentry_fd, 0, "fentry.link_create"))
goto cleanup;
cookie = 0x20000000000000L;
prog_fd = bpf_program__fd(skel->progs.fexit_test1);
link_opts.tracing.cookie = cookie;
fexit_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_FEXIT, &link_opts);
if (!ASSERT_GE(fexit_fd, 0, "fexit.link_create"))
goto cleanup;
cookie = 0x30000000000000L;
prog_fd = bpf_program__fd(skel->progs.fmod_ret_test);
link_opts.tracing.cookie = cookie;
fmod_ret_fd = bpf_link_create(prog_fd, 0, BPF_MODIFY_RETURN, &link_opts);
if (!ASSERT_GE(fmod_ret_fd, 0, "fmod_ret.link_create"))
goto cleanup;
prog_fd = bpf_program__fd(skel->progs.fentry_test1);
bpf_prog_test_run_opts(prog_fd, &opts);
prog_fd = bpf_program__fd(skel->progs.fmod_ret_test);
bpf_prog_test_run_opts(prog_fd, &opts);
ASSERT_EQ(skel->bss->fentry_res, 0x10000000000000L, "fentry_res");
ASSERT_EQ(skel->bss->fexit_res, 0x20000000000000L, "fexit_res");
ASSERT_EQ(skel->bss->fmod_ret_res, 0x30000000000000L, "fmod_ret_res");
cleanup:
if (fentry_fd >= 0)
close(fentry_fd);
if (fexit_fd >= 0)
close(fexit_fd);
if (fmod_ret_fd >= 0)
close(fmod_ret_fd);
}
int stack_mprotect(void);
static void lsm_subtest(struct test_bpf_cookie *skel)
{
__u64 cookie;
int prog_fd;
int lsm_fd = -1;
LIBBPF_OPTS(bpf_link_create_opts, link_opts);
int err;
skel->bss->lsm_res = 0;
cookie = 0x90000000000090L;
prog_fd = bpf_program__fd(skel->progs.test_int_hook);
link_opts.tracing.cookie = cookie;
lsm_fd = bpf_link_create(prog_fd, 0, BPF_LSM_MAC, &link_opts);
if (!ASSERT_GE(lsm_fd, 0, "lsm.link_create"))
goto cleanup;
err = stack_mprotect();
if (!ASSERT_EQ(err, -1, "stack_mprotect") ||
!ASSERT_EQ(errno, EPERM, "stack_mprotect"))
goto cleanup;
usleep(1);
ASSERT_EQ(skel->bss->lsm_res, 0x90000000000090L, "fentry_res");
cleanup:
if (lsm_fd >= 0)
close(lsm_fd);
}
static void tp_btf_subtest(struct test_bpf_cookie *skel)
{
__u64 cookie;
int prog_fd, link_fd = -1;
struct bpf_link *link = NULL;
LIBBPF_OPTS(bpf_link_create_opts, link_opts);
LIBBPF_OPTS(bpf_raw_tp_opts, raw_tp_opts);
LIBBPF_OPTS(bpf_trace_opts, trace_opts);
/* There are three different ways to attach tp_btf (BTF-aware raw
* tracepoint) programs. Let's test all of them.
*/
prog_fd = bpf_program__fd(skel->progs.handle_tp_btf);
/* low-level BPF_RAW_TRACEPOINT_OPEN command wrapper */
skel->bss->tp_btf_res = 0;
raw_tp_opts.cookie = cookie = 0x11000000000000L;
link_fd = bpf_raw_tracepoint_open_opts(prog_fd, &raw_tp_opts);
if (!ASSERT_GE(link_fd, 0, "bpf_raw_tracepoint_open_opts"))
goto cleanup;
usleep(1); /* trigger */
close(link_fd); /* detach */
link_fd = -1;
ASSERT_EQ(skel->bss->tp_btf_res, cookie, "raw_tp_open_res");
/* low-level generic bpf_link_create() API */
skel->bss->tp_btf_res = 0;
link_opts.tracing.cookie = cookie = 0x22000000000000L;
link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_RAW_TP, &link_opts);
if (!ASSERT_GE(link_fd, 0, "bpf_link_create"))
goto cleanup;
usleep(1); /* trigger */
close(link_fd); /* detach */
link_fd = -1;
ASSERT_EQ(skel->bss->tp_btf_res, cookie, "link_create_res");
/* high-level bpf_link-based bpf_program__attach_trace_opts() API */
skel->bss->tp_btf_res = 0;
trace_opts.cookie = cookie = 0x33000000000000L;
link = bpf_program__attach_trace_opts(skel->progs.handle_tp_btf, &trace_opts);
if (!ASSERT_OK_PTR(link, "attach_trace_opts"))
goto cleanup;
usleep(1); /* trigger */
bpf_link__destroy(link); /* detach */
link = NULL;
ASSERT_EQ(skel->bss->tp_btf_res, cookie, "attach_trace_opts_res");
cleanup:
if (link_fd >= 0)
close(link_fd);
bpf_link__destroy(link);
}
static void raw_tp_subtest(struct test_bpf_cookie *skel)
{
__u64 cookie;
int prog_fd, link_fd = -1;
struct bpf_link *link = NULL;
LIBBPF_OPTS(bpf_raw_tp_opts, raw_tp_opts);
LIBBPF_OPTS(bpf_raw_tracepoint_opts, opts);
/* There are two different ways to attach raw_tp programs */
prog_fd = bpf_program__fd(skel->progs.handle_raw_tp);
/* low-level BPF_RAW_TRACEPOINT_OPEN command wrapper */
skel->bss->raw_tp_res = 0;
raw_tp_opts.tp_name = "sys_enter";
raw_tp_opts.cookie = cookie = 0x55000000000000L;
link_fd = bpf_raw_tracepoint_open_opts(prog_fd, &raw_tp_opts);
if (!ASSERT_GE(link_fd, 0, "bpf_raw_tracepoint_open_opts"))
goto cleanup;
usleep(1); /* trigger */
close(link_fd); /* detach */
link_fd = -1;
ASSERT_EQ(skel->bss->raw_tp_res, cookie, "raw_tp_open_res");
/* high-level bpf_link-based bpf_program__attach_raw_tracepoint_opts() API */
skel->bss->raw_tp_res = 0;
opts.cookie = cookie = 0x66000000000000L;
link = bpf_program__attach_raw_tracepoint_opts(skel->progs.handle_raw_tp,
"sys_enter", &opts);
if (!ASSERT_OK_PTR(link, "attach_raw_tp_opts"))
goto cleanup;
usleep(1); /* trigger */
bpf_link__destroy(link); /* detach */
link = NULL;
ASSERT_EQ(skel->bss->raw_tp_res, cookie, "attach_raw_tp_opts_res");
cleanup:
if (link_fd >= 0)
close(link_fd);
bpf_link__destroy(link);
}
void test_bpf_cookie(void)
{
struct test_bpf_cookie *skel;
skel = test_bpf_cookie__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel_open"))
return;
skel->bss->my_tid = syscall(SYS_gettid);
if (test__start_subtest("kprobe"))
kprobe_subtest(skel);
if (test__start_subtest("multi_kprobe_link_api"))
kprobe_multi_link_api_subtest();
if (test__start_subtest("multi_kprobe_attach_api"))
kprobe_multi_attach_api_subtest();
if (test__start_subtest("uprobe"))
uprobe_subtest(skel);
if (test__start_subtest("multi_uprobe_attach_api"))
uprobe_multi_attach_api_subtest();
if (test__start_subtest("tracepoint"))
tp_subtest(skel);
if (test__start_subtest("perf_event"))
pe_subtest(skel);
if (test__start_subtest("trampoline"))
tracing_subtest(skel);
if (test__start_subtest("lsm"))
lsm_subtest(skel);
if (test__start_subtest("tp_btf"))
tp_btf_subtest(skel);
if (test__start_subtest("raw_tp"))
raw_tp_subtest(skel);
test_bpf_cookie__destroy(skel);
}
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