NAME

undump.bt - Catch UNIX domain socket packages. Uses bpftrace/eBPF.

SYNOPSIS

undump.bt

DESCRIPTION

undump.bt tracked reception of UNIX domain sockets.

This program is also a basic example of bpftrace and kprobes.

Since this uses BPF, only the root user can use this tool.

REQUIREMENTS

CONFIG_BPF and bpftrace.

EXAMPLES

Trace reception of UNIX domain sockets:

# undump.bt

FIELDS

TIME

A timestamp on the output, in "HH:MM:SS" format.

COMM

The process COMM.

PID

The process ID.

SIZE

The size of the received packet, in bytes.

DATA

Display received packets in hex or string.

OVERHEAD

The overhead of this program mainly comes from the data packets received by the terminal output.

SOURCE

This is from bpftrace.

https://github.com/iovisor/bpftrace

Also look in the bpftrace distribution for a companion _examples.txt file containing example usage, output, and commentary for this tool.

This is a bpftrace version of the bcc examples/tracing of the same name. The bcc tool may provide more options and customizations.

https://github.com/iovisor/bcc

OS

Linux

STABILITY

Unstable - in development.

AUTHOR

Rong Tao

SEE ALSO

opensnoop.bt(8)