tests that verify auto-attach works for function entry/return for
local functions in program, library functions in program and library
functions in library.
Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
---
.../selftests/bpf/prog_tests/uprobe_autoattach.c | 48 +++++++++++++++
.../selftests/bpf/progs/test_uprobe_autoattach.c | 69 ++++++++++++++++++++++
2 files changed, 117 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
create mode 100644 tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c b/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
new file mode 100644
index 0000000..57ed636
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022, Oracle and/or its affiliates. */
+
+#include <test_progs.h>
+#include "test_uprobe_autoattach.skel.h"
+
+/* uprobe attach point */
+static void autoattach_trigger_func(void)
+{
+ asm volatile ("");
+}
+
+void test_uprobe_autoattach(void)
+{
+ struct test_uprobe_autoattach *skel;
+ char *mem;
+
+ skel = test_uprobe_autoattach__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "skel_open"))
+ return;
+ if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
+ goto cleanup;
+
+ if (!ASSERT_OK(test_uprobe_autoattach__attach(skel), "skel_attach"))
+ goto cleanup;
+
+ /* trigger & validate uprobe & uretprobe */
+ autoattach_trigger_func();
+
+ /* trigger & validate shared library u[ret]probes attached by name */
+ mem = malloc(1);
+ free(mem);
+
+ if (!ASSERT_EQ(skel->bss->uprobe_byname_res, 1, "check_uprobe_byname_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname_res, 2, "check_uretprobe_byname_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uprobe_byname2_res, 3, "check_uprobe_byname2_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname2_res, 4, "check_uretprobe_byname2_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uprobe_byname3_res, 5, "check_uprobe_byname3_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname3_res, 6, "check_uretprobe_byname3_res"))
+ goto cleanup;
+cleanup:
+ test_uprobe_autoattach__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c b/tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c
new file mode 100644
index 0000000..a808bcf
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022, Oracle and/or its affiliates. */
+
+#include <linux/ptrace.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+int uprobe_byname_res = 0;
+int uretprobe_byname_res = 0;
+int uprobe_byname2_res = 0;
+int uretprobe_byname2_res = 0;
+int uprobe_byname3_res = 0;
+int uretprobe_byname3_res = 0;
+
+/* This program cannot auto-attach, but that should not stop other
+ * programs from attaching.
+ */
+SEC("uprobe/no_autoattach")
+int handle_uprobe_noautoattach(struct pt_regs *ctx)
+{
+ return 0;
+}
+
+SEC("uprobe//proc/self/exe:autoattach_trigger_func")
+int handle_uprobe_byname(struct pt_regs *ctx)
+{
+ uprobe_byname_res = 1;
+ return 0;
+}
+
+SEC("uretprobe//proc/self/exe:autoattach_trigger_func")
+int handle_uretprobe_byname(struct pt_regs *ctx)
+{
+ uretprobe_byname_res = 2;
+ return 0;
+}
+
+
+SEC("uprobe//proc/self/exe:malloc")
+int handle_uprobe_byname2(struct pt_regs *ctx)
+{
+ uprobe_byname2_res = 3;
+ return 0;
+}
+
+SEC("uretprobe//proc/self/exe:malloc")
+int handle_uretprobe_byname2(struct pt_regs *ctx)
+{
+ uretprobe_byname2_res = 4;
+ return 0;
+}
+
+
+SEC("uprobe/libc.so.6:free")
+int handle_uprobe_byname3(struct pt_regs *ctx)
+{
+ uprobe_byname3_res = 5;
+ return 0;
+}
+
+SEC("uretprobe/libc.so.6:free")
+int handle_uretprobe_byname3(struct pt_regs *ctx)
+{
+ uretprobe_byname3_res = 6;
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
--
1.8.3.1
