AUDITD(8) System Manager's Manual AUDITD(8)
auditd - audit daemon
The audit daemon controls the generation and location of audit trail
files. If the function issecure(3) returns false, the only action that
auditd takes is to disable the auditing system; otherwise, auditing is
set up and started. If auditing is desired, auditd reads the
audit_control(5) file to get a list of directories into which audit
files can be written and the percentage limit for how much space to
reserve on each filesystem before changing to the next directory.
If auditd receives the signal SIGUSR1, the current audit file is closed
and another is opened. If SIGHUP is received, the current audit trail
is closed, the audit_control file reread, and a new trail is opened.
If SIGTERM is received, the audit trail is closed and auditing is ter-
minated. The program audit(8) sends these signals and is recommended
for this purpose.
Each time the audit daemon opens a new audit trail file, it updates the
file audit_data(5) to include the correct name.
The audit daemon invokes the program audit_warn(8) under the following
conditions with the indicated options:
audit_warn soft pathname
The file system upon which pathname resides has exceeded the
minimum free space limit defined in audit_control(5). A new
audit trail has been opened on another file system.
All available file systems have been filled beyond the minimum
free space limit. A new audit trail has been opened anyway.
audit_warn hard pathname
The file system upon which pathname resides has filled or for
some reason become unavailable. A new audit trail has been
opened on another file system.
audit_warn allhard count
All available file systems have been filled or for some reason
become unavailable. The audit daemon will repeat this call to
audit_warn every twenty seconds until space becomes available.
count is the number of times that audit_warn has been called
since the problem arose.
There is already an audit daemon running.
The file /etc/security/audit/audit_tmp exists, indicating a
The internal system audit condition is AUC_FCHDONE. Auditing
cannot be started without rebooting the system.
The internal system audit condition has been changed to not be
AUC_AUDITING by someone other than the audit daemon. This
causes the audit daemon to exit.
An error occurred during the orderly shutdown of the auditing
There is a problem getting the directory list from /etc/secu-
The audit daemon will hang in a sleep loop until this file is
auditsvc(2), audit_control(5), audit.log(5), audit(8), audit_warn(8)
7 September 1988 AUDITD(8)