Manual: capable.bt

capable.bt(8)					   System Manager's Manual				       capable.bt(8)

NAME
       capable.bt - Trace security capability checks (cap_capable()).

SYNOPSIS
       capable.bt

DESCRIPTION
       This  traces  security capability checks in the kernel, and prints details for each call. This can be useful for gen‐
       eral debugging, and also security enforcement: determining a white list of capabilities an application needs.

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

REQUIREMENTS
       CONFIG_BPF, bpftrace.

EXAMPLES
       Trace all capability checks system-wide:
	      # capable.bt

FIELDS
       TIME(s)
	      Time of capability check: HH:MM:SS.

       UID    User ID.

       PID    Process ID.

       COMM   Process name.

       CAP    Capability number.

       NAME   Capability name. See capabilities(7) for descriptions.

       AUDIT  Whether this was an audit event.

OVERHEAD
       This adds low-overhead instrumentation to capability checks, which are expected to be low  frequency,  however,	that
       depends on the application. Test in a lab environment before use.

SOURCE
       This is from bpftrace.

	      https://github.com/bpftrace/bpftrace

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

       This is a bpftrace version of the bcc tool of the same name. The bcc tool provides options to customize the output.

	      https://github.com/iovisor/bcc

OS
       Linux

STABILITY
       Unstable - in development.

AUTHOR
       Brendan Gregg

SEE ALSO
       capabilities(7)

USER COMMANDS						 2018-09-08					       capable.bt(8)