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#!/usr/bin/env bpftrace
/*
 * undump	Trace unix domain socket package receive.
 *		For Linux, uses bpftrace and eBPF.
 *
 * Also a basic example of bpftrace.
 *
 * This is a bpftrace version of the bcc examples/tracing of the same name.
 *
 * USAGE: undump.bt
 *
 * Copyright 2022 CESTC, Inc.
 * Licensed under the Apache License, Version 2.0 (the "License")
 *
 * 22-May-2022	Rong Tao	Created this.
 */
#ifndef BPFTRACE_HAVE_BTF
#include <linux/skbuff.h>
#endif

BEGIN
{
	printf("Dump UNIX socket packages RX. Ctrl-C to end\n");
	printf("%-8s %-16s %-8s %-8s %-s\n", "TIME", "COMM", "PID", "SIZE", "DATA");
}

kprobe:unix_stream_read_actor
{
	$skb = (struct sk_buff *)arg0;
	time("%H:%M:%S ");
	printf("%-16s %-8d %-8d %r\n", comm, pid, $skb->len, buf($skb->data, $skb->len));
}

END
{
}