1 // SPDX-License-Identifier: GPL-2.0
2 #define _GNU_SOURCE
3 #include <test_progs.h>
4 #include "test_task_pt_regs.skel.h"
5 
6 void test_task_pt_regs(void)
7 {
8 	struct test_task_pt_regs *skel;
9 	struct bpf_link *uprobe_link;
10 	size_t uprobe_offset;
11 	ssize_t base_addr;
12 	bool match;
13 
14 	base_addr = get_base_addr();
15 	if (!ASSERT_GT(base_addr, 0, "get_base_addr"))
16 		return;
17 	uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr);
18 
19 	skel = test_task_pt_regs__open_and_load();
20 	if (!ASSERT_OK_PTR(skel, "skel_open"))
21 		return;
22 	if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
23 		goto cleanup;
24 
25 	uprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uprobe,
26 						 false /* retprobe */,
27 						 0 /* self pid */,
28 						 "/proc/self/exe",
29 						 uprobe_offset);
30 	if (!ASSERT_OK_PTR(uprobe_link, "attach_uprobe"))
31 		goto cleanup;
32 	skel->links.handle_uprobe = uprobe_link;
33 
34 	/* trigger & validate uprobe */
35 	get_base_addr();
36 
37 	if (!ASSERT_EQ(skel->bss->uprobe_res, 1, "check_uprobe_res"))
38 		goto cleanup;
39 
40 	match = !memcmp(&skel->bss->current_regs, &skel->bss->ctx_regs,
41 			sizeof(skel->bss->current_regs));
42 	ASSERT_TRUE(match, "check_regs_match");
43 
44 cleanup:
45 	test_task_pt_regs__destroy(skel);
46 }
47