linux/security
Paul Moore b1edeb1023 netlabel: Replace protocol/NetLabel linking with refrerence counts
NetLabel has always had a list of backpointers in the CIPSO DOI definition
structure which pointed to the NetLabel LSM domain mapping structures which
referenced the CIPSO DOI struct.  The rationale for this was that when an
administrator removed a CIPSO DOI from the system all of the associated
NetLabel LSM domain mappings should be removed as well; a list of
backpointers made this a simple operation.

Unfortunately, while the backpointers did make the removal easier they were
a bit of a mess from an implementation point of view which was making
further development difficult.  Since the removal of a CIPSO DOI is a
realtively rare event it seems to make sense to remove this backpointer
list as the optimization was hurting us more then it was helping.  However,
we still need to be able to track when a CIPSO DOI definition is being used
so replace the backpointer list with a reference count.  In order to
preserve the current functionality of removing the associated LSM domain
mappings when a CIPSO DOI is removed we walk the LSM domain mapping table,
removing the relevant entries.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Reviewed-by: James Morris <jmorris@namei.org>
2008-10-10 10:16:31 -04:00
..
keys keys: remove unused key_alloc_sem 2008-06-06 11:29:11 -07:00
selinux selinux: Fix missing calls to netlbl_skbuff_err() 2008-10-10 10:16:31 -04:00
smack netlabel: Replace protocol/NetLabel linking with refrerence counts 2008-10-10 10:16:31 -04:00
capability.c security: Fix setting of PF_SUPERPRIV by __capable() 2008-08-14 22:59:43 +10:00
commoncap.c security: Fix setting of PF_SUPERPRIV by __capable() 2008-08-14 22:59:43 +10:00
device_cgroup.c devcgroup: fix race against rmdir() 2008-09-02 19:21:38 -07:00
inode.c Kobject: convert remaining kobject_unregister() to kobject_put() 2008-01-24 20:40:40 -08:00
Kconfig security: filesystem capabilities no longer experimental 2008-07-24 10:47:22 -07:00
Makefile security: remove dummy module 2008-07-14 15:03:04 +10:00
root_plug.c security: Fix setting of PF_SUPERPRIV by __capable() 2008-08-14 22:59:43 +10:00
security.c security: Fix setting of PF_SUPERPRIV by __capable() 2008-08-14 22:59:43 +10:00