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SELinux: Add network port SID cache

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Much like we added a network node cache, this patch adds a network port
cache. The design is taken almost completely from the network node cache
which in turn was taken from the network interface cache.  The basic idea is
to cache entries in a hash table based on protocol/port information.  The
hash function only takes the port number into account since the number of
different protocols in use at any one time is expected to be relatively
small.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Paul Moore 2008-04-10 10:48:14 -04:00 • committed by James Morris
parent 832cbd9aa1
commit 3e11217263
5 changed files with 17 additions and 21 deletions
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3
security/selinux/include/security.h
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@ -102,8 +102,7 @@ int security_context_to_sid_default(char *scontext, u32 scontext_len,
int security_get_user_sids(u32 callsid, char *username,
u32 **sids, u32 *nel);
int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port,
u32 *out_sid);
int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
int security_netif_sid(char *name, u32 *if_sid);