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
test_task_pt_regs(void)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