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AUDIT(4) FreeBSD Kernel Interfaces Manual AUDIT(4)
NAME
audit - Security Event Audit
SYNOPSIS
options AUDIT
DESCRIPTION
Security Event Audit is a facility to provide fine-grained, configurable
logging of security-relevant events, and is intended to meet the
requirements of the Common Criteria (CC) Common Access Protection Profile
(CAPP) evaluation. The FreeBSD audit facility implements the de facto
industry standard BSM API, file formats, and command line interface,
first found in the Solaris operating system. Information on the user
space implementation can be found in libbsm(3).
Audit support is enabled at boot, if present in the kernel, using an
rc.conf(5) flag. The audit daemon, auditd(8), is responsible for
configuring the kernel to perform audit, pushing configuration data from
the various audit configuration files into the kernel.
Audit Special Device
The kernel audit facility provides a special device, /dev/audit, which is
used by auditd(8) to monitor for audit events, such as requests to cycle
the log, low disk space conditions, and requests to terminate auditing.
This device is not intended for use by applications.
Audit Pipe Special Devices
Audit pipe special devices, discussed in auditpipe(4), provide a
configurable live tracking mechanism to allow applications to tee the
audit trail, as well as to configure custom preselection parameters to
track users and events in a fine-grained manner.
DTrace Audit Provider
The DTrace Audit Provider, dtaudit(4), allows D scripts to enable capture
of in-kernel audit records for kernel audit event types, and then process
their contents during audit commit or BSM generation.
SEE ALSO
auditreduce(1), praudit(1), audit(2), auditctl(2), auditon(2),
getaudit(2), getauid(2), poll(2), select(2), setaudit(2), setauid(2),
libbsm(3), auditpipe(4), dtaudit(4), audit.log(5), audit_class(5),
audit_control(5), audit_event(5), audit_user(5), audit_warn(5),
rc.conf(5), audit(8), auditd(8), auditdistd(8)
HISTORY
The OpenBSM implementation was created by McAfee Research, the security
division of McAfee Inc., under contract to Apple Computer Inc. in 2004.
It was subsequently adopted by the TrustedBSD Project as the foundation
for the OpenBSM distribution.
Support for kernel audit first appeared in FreeBSD 6.2.
AUTHORS
This software was created by McAfee Research, the security research
division of McAfee, Inc., under contract to Apple Computer Inc.
Additional authors include Wayne Salamon, Robert Watson, and SPARTA Inc.
by user applications are syntactically valid BSM; as submission of
records is limited to privileged processes, this is not a critical bug.
Instrumentation of auditable events in the kernel is not complete, as
some system calls do not generate audit records, or generate audit
records with incomplete argument information.
Mandatory Access Control (MAC) labels, as provided by the mac(4)
facility, are not audited as part of records involving MAC decisions.
Currently the audit syscalls are not supported for jailed processes.
However, if a process has audit session state associated with it, audit
records will still be produced and a zonename token containing the jail's
ID or name will be present in the audit records.
FreeBSD 14.0-RELEASE-p11 April 28, 2019 FreeBSD 14.0-RELEASE-p11