cvs commit: src/sys/security/mac_portacl mac_portacl.c

[Robert Watson]

rwatson     2004-12-22 09:38:10 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/security/mac_portacl mac_portacl.c 
  Log:
  Merge mac_portacl.c:1.5 from HEAD to RELENG_5:
  
    date: 2004/12/06 19:43:45;  author: rwatson;  state: Exp;  lines: +19 -26
    Switch from using an sx lock to a mutex for the mac_portacl rule chain:
    the sx lock was used previously because we might sleep allocating
    additional memory by using auto-extending sbufs.  However, we no longer
    do this, instead retaining the user-submitted rule string, so mutexes
    can be used instead.  Annotate the reason for not using the sbuf-related
    rule-to-string code with a comment.
  
    Switch to using TAILQ_CONCAT() instead of manual list copying, as it's
    O(1), reducing the rule replacement step under the mutex from O(2N) to
    O(2).
  
    Remove now uneeded vnode-related includes.
  
    MFC after:      2 weeks
  
  Revision  Changes    Path
  1.5.2.1   +19 -26    src/sys/security/mac_portacl/mac_portacl.c