whatcanGOwrong

go/pkg/mod/github.com/cilium/ebpf@v0.11.0/examples/uretprobe/uretprobe.c

@@ -0,0 +1,31 @@
+//go:build ignore
+
+#include "common.h"
+
+#include "bpf_tracing.h"
+
+char __license[] SEC("license") = "Dual MIT/GPL";
+
+struct event {
+	u32 pid;
+	u8 line[80];
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+} events SEC(".maps");
+
+// Force emitting struct event into the ELF.
+const struct event *unused __attribute__((unused));
+
+SEC("uretprobe/bash_readline")
+int uretprobe_bash_readline(struct pt_regs *ctx) {
+	struct event event;
+
+	event.pid = bpf_get_current_pid_tgid();
+	bpf_probe_read(&event.line, sizeof(event.line), (void *)PT_REGS_RC(ctx));
+
+	bpf_perf_event_output(ctx, &events, BPF_F_CURRENT_CPU, &event, sizeof(event));
+
+	return 0;
+}