From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E1FAA932 for ; Fri, 30 Jun 2023 08:37:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7DCFC433CC; Fri, 30 Jun 2023 08:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1688114256; bh=IoOBhwY1eF6Gv08BSOfriLcg7VCmDxonftgpfGo4Dvo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AJ1UmnOXv5AlHtJGMw4C01T6b1uwKgasCp75cm1KFOGthPeX+isH6aMW+1cuk8sQb a9Y3ZITT0gqVGqWU3A2Yj8Pi0qGCU44+9F5uDc9ZXnRO1XOMRgBbiftBHkAJTP0aCU ZSZSIDSe71nfc9H+izpYeoMndTyW1qYJU+wO/DXVYT6iKJd5KnR4B1RWnNRBK5j2tX IhDzz9SeAiIifYen25ZjIjA4SdgALZ4s2iftj4at262TU5SDMAtPuAdYsNBO9UEYOL 2g7z0UM08ZdklWfrsfaAuf6rwFf0qUnIxdEPtJEWvhAKeGtcG7+Zj5Z8vYUTQMhKXm SMftd8IB+sB1g== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo Subject: [PATCHv3 bpf-next 19/26] selftests/bpf: Add uprobe_multi link test Date: Fri, 30 Jun 2023 10:33:37 +0200 Message-ID: <20230630083344.984305-20-jolsa@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230630083344.984305-1-jolsa@kernel.org> References: <20230630083344.984305-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adding uprobe_multi test for bpf_link_create attach function. Testing attachment using the struct bpf_link_create_opts. Signed-off-by: Jiri Olsa --- .../bpf/prog_tests/uprobe_multi_test.c | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index f97a68871e73..fd858636b8b0 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -3,6 +3,7 @@ #include #include #include "uprobe_multi.skel.h" +#include "bpf/libbpf_elf.h" static char test_data[] = "test_data"; @@ -136,6 +137,71 @@ static void test_attach_api_syms(void) test_attach_api("/proc/self/exe", NULL, &opts); } +static void test_link_api(void) +{ + int prog_fd, link1_fd = -1, link2_fd = -1, link3_fd = -1, link4_fd = -1; + LIBBPF_OPTS(bpf_link_create_opts, opts); + const char *path = "/proc/self/exe"; + struct uprobe_multi *skel = NULL; + unsigned long *offsets = NULL; + const char *syms[3] = { + "uprobe_multi_func_1", + "uprobe_multi_func_2", + "uprobe_multi_func_3", + }; + int err; + + err = elf_resolve_syms_offsets(path, 3, syms, (unsigned long **) &offsets); + if (!ASSERT_OK(err, "elf_resolve_syms_offsets")) + return; + + opts.uprobe_multi.path = path; + opts.uprobe_multi.offsets = offsets; + opts.uprobe_multi.cnt = ARRAY_SIZE(syms); + + skel = uprobe_multi__open_and_load(); + if (!ASSERT_OK_PTR(skel, "uprobe_multi__open_and_load")) + goto cleanup; + + opts.kprobe_multi.flags = 0; + prog_fd = bpf_program__fd(skel->progs.test_uprobe); + link1_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_GE(link1_fd, 0, "link1_fd")) + goto cleanup; + + opts.kprobe_multi.flags = BPF_F_UPROBE_MULTI_RETURN; + prog_fd = bpf_program__fd(skel->progs.test_uretprobe); + link2_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_GE(link2_fd, 0, "link2_fd")) + goto cleanup; + + opts.kprobe_multi.flags = 0; + prog_fd = bpf_program__fd(skel->progs.test_uprobe_sleep); + link3_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_GE(link1_fd, 0, "link3_fd")) + goto cleanup; + + opts.kprobe_multi.flags = BPF_F_UPROBE_MULTI_RETURN; + prog_fd = bpf_program__fd(skel->progs.test_uretprobe_sleep); + link4_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_GE(link2_fd, 0, "link4_fd")) + goto cleanup; + uprobe_multi_test_run(skel); + +cleanup: + if (link1_fd >= 0) + close(link1_fd); + if (link2_fd >= 0) + close(link2_fd); + if (link3_fd >= 0) + close(link3_fd); + if (link4_fd >= 0) + close(link4_fd); + + uprobe_multi__destroy(skel); + free(offsets); +} + void test_uprobe_multi_test(void) { if (test__start_subtest("skel_api")) @@ -144,4 +210,6 @@ void test_uprobe_multi_test(void) test_attach_api_pattern(); if (test__start_subtest("attach_api_syms")) test_attach_api_syms(); + if (test__start_subtest("link_api")) + test_link_api(); } -- 2.41.0