Auditd event cache

Operating Systems Linux Red Hat Auditd event cache

08-12-2010

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Auditd event cache

I'm writing an auditd plugin. In my testing, I enabled pam_tty_audit.

After running test data through it, I notice that when logged in as root, the tty events are sent in real time, and not cached in the event queue.

When running as a user, the events are only spit out by the dispatcher (and presumably downstream in the auditd daemon) much later - presumably when the cache is full.

The other difference is the root tty events are sent as individual events, whereas the user events are collected and sent as a single compound event. I've tried various configuration changes, but this behavior seems to be set in stone. Is there a way of forcing the system to send tty events to the plugin in near real time as with root?

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LEARN ABOUT V7

audit_binfile

audit_binfile(5)					Standards, Environments, and Macros					  audit_binfile(5)

NAME

       audit_binfile - generation of Solaris audit logs

SYNOPSIS

       /usr/lib/security/audit_binfile.so

DESCRIPTION

       The  audit_binfile  plugin module for Solaris audit, /usr/lib/security/audit_binfile.so, writes binary audit data to files as configured in
       audit_control(4); it is the default plugin for the Solaris audit daemon auditd(1M). Its output is described by audit.log(4).

       The audit_binfile plugin is loaded by auditd if audit_control contains one or more lines defining audit directories by means  of  the  dir:
       specification or if audit_control has a plugin: specification of name=audit_binfile.so.

OBJECT ATTRIBUTES

       The  p_dir and p_minfree attributes are equivalent to the dir: and minfree: lines described in audit_control. If both the dir: line and the
       p_dir attribute are used, the plugin combines all directories into a single list with those specified by means of dir: at the front of  the
       list. If both the minfree and the p_minfree attributes are given, the p_minfree value is used.

EXAMPLES

       The following directives cause audit_binfile.so to be loaded, specify the directories for writing audit logs, and specify the percentage of
       required free space per directory.

       flags: lo,ad,-fm
       naflags: lo,ad
       plugin: name=audit_binfile.so;
       p_minfree=20;
       p_dir=/etc/security/jedgar/eggplant,
       /etc/security/jedgar.aux/eggplant,
       /etc/security/global/eggplant

ATTRIBUTES

       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       auditd(1M), audit_control(4), syslog.conf(4), attributes(5)

SunOS 5.10							    20 May 2003 						  audit_binfile(5)

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