audit: log AUDIT_TIME_* records only from rules
authorRichard Guy Briggs <rgb@redhat.com>
Tue, 22 Feb 2022 16:44:51 +0000 (11:44 -0500)
committerPaul Moore <paul@paul-moore.com>
Tue, 22 Feb 2022 18:51:40 +0000 (13:51 -0500)
commit272ceeaea355214b301530e262a0df8600bfca95
tree98bbdd67587240bcedf02cc735d1e7fb351bfdf6
parente783362eb54cd99b2cac8b3a9aeac942e6f6ac07
audit: log AUDIT_TIME_* records only from rules

AUDIT_TIME_* events are generated when there are syscall rules present
that are not related to time keeping.  This will produce noisy log
entries that could flood the logs and hide events we really care about.

Rather than immediately produce the AUDIT_TIME_* records, store the data
in the context and log it at syscall exit time respecting the filter
rules.

Note: This eats the audit_buffer, unlike any others in show_special().

Please see https://bugzilla.redhat.com/show_bug.cgi?id=1991919

Fixes: 7e8eda734d30 ("ntp: Audit NTP parameters adjustment")
Fixes: 2d87a0674bd6 ("timekeeping: Audit clock adjustments")
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
[PM: fixed style/whitespace issues]
Signed-off-by: Paul Moore <paul@paul-moore.com>
kernel/audit.h
kernel/auditsc.c