cvs commit: src/sys/security/audit audit.c audit_private.h audit_syscalls.c audit_worker.c

[Christian S.J. Peron]

csjp        2006-09-17 17:52:57 UTC

  FreeBSD src repository

  Modified files:
    sys/security/audit   audit.c audit_private.h audit_syscalls.c 
                         audit_worker.c 
  Log:
  Correct a slight regression which was introduced with the implementation of
  audit pipes. If the kernel record was not selected for the trail or the pipe,
  any user supplied record attached to it would be tossed away, resulting in
  otherwise selected events being lost.
  
  - Introduce two new masks: AR_PRESELECT_USER_TRAIL AR_PRESELECT_USER_PIPE,
    currently we have AR_PRESELECT_TRAIL and AR_PRESELECT_PIPE, which tells
    the audit worker that we are interested in the kernel record, with
    the additional masks we can determine if either the pipe or trail is
    interested in seeing the kernel or user record.
  
  - In audit(2), we unconditionally set the AR_PRESELECT_USER_TRAIL and
    AR_PRESELECT_USER_PIPE masks under the assumption that userspace has
    done the preselection [1].
  
  Currently, there is work being done that allows the kernel to parse and
  preselect user supplied records, so in the future preselection could occur
  in either layer. But there is still a few details to work out here.
  
  [1] At some point we need to teach au_preselect(3) about the interests of
      all the individual audit pipes.
  
  This is a RELENG_6 candidate.
  
  Reviewed by:    rwatson
  Obtained from:  TrustedBSD Project
  MFC after:      1 week
  
  Revision  Changes    Path
  1.20      +2 -2      src/sys/security/audit/audit.c
  1.11      +3 -0      src/sys/security/audit/audit_private.h
  1.6       +8 -0      src/sys/security/audit/audit_syscalls.c
  1.10      +7 -3      src/sys/security/audit/audit_worker.c