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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
{
}