diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/task_pt_regs.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/task_pt_regs.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c new file mode 100644 index 000000000000..53f0e0fa1a53 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <test_progs.h> +#include <linux/ptrace.h> +#include "test_task_pt_regs.skel.h" + +void test_task_pt_regs(void) +{ + struct test_task_pt_regs *skel; + struct bpf_link *uprobe_link; + size_t uprobe_offset; + ssize_t base_addr; + bool match; + + base_addr = get_base_addr(); + if (!ASSERT_GT(base_addr, 0, "get_base_addr")) + return; + uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr); + + skel = test_task_pt_regs__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + return; + if (!ASSERT_OK_PTR(skel->bss, "check_bss")) + goto cleanup; + + uprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uprobe, + false /* retprobe */, + 0 /* self pid */, + "/proc/self/exe", + uprobe_offset); + if (!ASSERT_OK_PTR(uprobe_link, "attach_uprobe")) + goto cleanup; + skel->links.handle_uprobe = uprobe_link; + + /* trigger & validate uprobe */ + get_base_addr(); + + if (!ASSERT_EQ(skel->bss->uprobe_res, 1, "check_uprobe_res")) + goto cleanup; + + match = !memcmp(&skel->bss->current_regs, &skel->bss->ctx_regs, + sizeof(skel->bss->current_regs)); + ASSERT_TRUE(match, "check_regs_match"); + +cleanup: + test_task_pt_regs__destroy(skel); +} |