sofdsnoop(8) System Manager's Manual sofdsnoop(8)
NAME
sofdsnoop - Trace FDs passed through unix sockets. Uses Linux eBPF/bcc.
SYNOPSIS
sofdsnoop [-h] [-T] [-p PID] [-t TID] [-n NAME] [-d DURATION]
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 de-
tails (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.
REQUIREMENTS
CONFIG_BPF and 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)
EXAMPLES
Trace all sockets:
# sofdsnoop
Trace all sockets, and include timestamps:
# sofdsnoop -T
Only trace sockets where the process contains "server":
# sofdsnoop -n server
FIELDS
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
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.
OS
Linux
STABILITY
Unstable - in development.
AUTHOR
Jiri Olsa
SEE ALSO
opensnoop(1)
USER COMMANDS 2018-11-08 sofdsnoop(8)
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