sofdsnoop - Trace FDs passed through unix sockets. Uses Linux eBPF/bcc.
Contents
Description
sofdsnoop traces FDs passed through unix sockets
Every file descriptor that is passed via unix sockets os displayed on separate line together with process
info (TID/COMM columns), ACTION details (SEND/RECV), file descriptor number (FD) and its translation to
file if available (NAME).
Since this uses BPF, only the root user can use this tool.
Examples
Trace all sockets:
# sofdsnoop
Trace all sockets, and include timestamps:
# sofdsnoop-T
Only trace sockets where the process contains "server":
# sofdsnoop-nserverFields
TIME(s)
Time of SEDN/RECV actions, in seconds.
ACTION Operation on the fd SEND/RECV.
TID Process TID
COMM Parent process/command name.
SOCKET The socket carrier.
FD file descriptor number
NAME file name for SEND lines
Name
sofdsnoop - Trace FDs passed through unix sockets. Uses Linux eBPF/bcc.
Options
-h Print usage message.
-T Include a timestamp column.
-p PID Trace this process ID only (filtered in-kernel).
-t TID Trace this thread ID only (filtered in-kernel).
-d DURATION
Total duration of trace in seconds.
-n NAME
Only print command lines matching this command name (regex)
Os
Linux
Requirements
CONFIG_BPF and bcc.
See Also
opensnoop(1) USER COMMANDS 2018-11-08 sofdsnoop(8)
Source
This is from bcc.
https://github.com/iovisor/bcc
Also look in the bcc distribution for a companion _examples.txt file containing example usage, output,
and commentary for this tool.
Stability
Unstable - in development.
Synopsis
sofdsnoop[-h][-T][-pPID][-tTID][-nNAME][-dDURATION]
