AUDITD(8)

NAME
auditd - audit daemon

SYNOPSIS
/usr/etc/auditd

DESCRIPTION
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 terminated. 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.

  Auditing Conditions

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.

audit_warn allsoft
    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.

audit_warn ebusy
    There is already an audit daemon running.

audit_warn tmpfile
    The file /etc/security/audit/audit_tmp exists, indicating a fatal error.

audit_warn nostart
    The internal system audit condition is AUC_FCHDONE. Auditing cannot be started without rebooting the system.

audit_warn auditoff
    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.

audit_warn postsigterm
    An error occurred during the orderly shutdown of the auditing system.

audit_warn getacdir
    There is a problem getting the directory list from /etc/security/audit/audit_control.

    The audit daemon will hang in a sleep loop until this file is fixed.

FILES
/etc/security/audit/audit_control
/etc/security/audit/audit_data

SEE ALSO
auditsvc(2), audit_control(5), audit.log(5), audit(8), audit_warn(8)