cvs commit: src/sys/kern sysv_msg.c sysv_sem.c sysv_shm.c src/sys/sys msg.h

[Robert Watson]

rwatson     2005-05-05 18:53:13 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/kern             sysv_msg.c sysv_sem.c sysv_shm.c 
    sys/sys              msg.h 
  Log:
  Merge sysv_msg.c:1.54, sysv_sem.c:1.71-1.72, sysv_shm.c:1.98,
  msg.h:1.18:
  
    Second of several commits to allow kernel System V IPC data structures
    to be modified and extended without breaking the user space ABI:
  
    Use _kernel variants on _ds structures for System V sempahores, message
    queues, and shared memory.  When interfacing with userspace, export
    only the _ds subsets of the _kernel data structures.  A lot of search
    and replace.
  
    Define the message structure in the _KERNEL portion of msg.h so that it
    can be used by other kernel consumers, but not exposed to user space.
  
    Submitted by:   Dandekar Hrishikesh <rishi_dandekar at sbcglobal dot net>
    Obtained from:  TrustedBSD Project
    Sponsored by:   DARPA, SPAWAR, McAfee Research
  
    Correct two incorrectly merged changes introduced in sysv_sem.c:1.71:
    return EINVAL rather than setting error, and don't free sops
    unconditionally.  The first change was merged accidentally as part of
    the larger set of changes to introduce MAC labels and access control,
    and potentially lead to continued processing of a request even after
    it was determined to be invalid.  The second change was due to changes
    in the semaphore code since the original work was performed.
  
    Pointed out by: truckman
  
  NOTE: Change to ipcs.c in user space that catches up with kernel header
  changes to follow shortly in a second commit.  The API has changed, but
  not the ABI.
  
  Requested by:   ps
  
  Revision  Changes    Path
  1.53.2.4  +126 -134  src/sys/kern/sysv_msg.c
  1.70.2.4  +128 -126  src/sys/kern/sysv_sem.c
  1.96.2.4  +88 -88    src/sys/kern/sysv_shm.c
  1.16.6.3  +9 -0      src/sys/sys/msg.h