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author | rwatson <rwatson@FreeBSD.org> | 2003-11-18 00:39:07 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2003-11-18 00:39:07 +0000 |
commit | 9c969b771a32651104f16586408deb67d7039014 (patch) | |
tree | 9ae16c9f3cb9780bbad2d9f596380ed1094d201c /sys/netinet/tcp_usrreq.c | |
parent | c428ace885437d38f0343448bc61807c6e7a690c (diff) | |
download | FreeBSD-src-9c969b771a32651104f16586408deb67d7039014.zip FreeBSD-src-9c969b771a32651104f16586408deb67d7039014.tar.gz |
Introduce a MAC label reference in 'struct inpcb', which caches
the MAC label referenced from 'struct socket' in the IPv4 and
IPv6-based protocols. This permits MAC labels to be checked during
network delivery operations without dereferencing inp->inp_socket
to get to so->so_label, which will eventually avoid our having to
grab the socket lock during delivery at the network layer.
This change introduces 'struct inpcb' as a labeled object to the
MAC Framework, along with the normal circus of entry points:
initialization, creation from socket, destruction, as well as a
delivery access control check.
For most policies, the inpcb label will simply be a cache of the
socket label, so a new protocol switch method is introduced,
pr_sosetlabel() to notify protocols that the socket layer label
has been updated so that the cache can be updated while holding
appropriate locks. Most protocols implement this using
pru_sosetlabel_null(), but IPv4/IPv6 protocols using inpcbs use
the the worker function in_pcbsosetlabel(), which calls into the
MAC Framework to perform a cache update.
Biba, LOMAC, and MLS implement these entry points, as do the stub
policy, and test policy.
Reviewed by: sam, bms
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
Diffstat (limited to 'sys/netinet/tcp_usrreq.c')
-rw-r--r-- | sys/netinet/tcp_usrreq.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index 805a4fb..7035227 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -816,7 +816,7 @@ struct pr_usrreqs tcp_usrreqs = { tcp_usr_connect, pru_connect2_notsupp, in_control, tcp_usr_detach, tcp_usr_disconnect, tcp_usr_listen, tcp_peeraddr, tcp_usr_rcvd, tcp_usr_rcvoob, tcp_usr_send, pru_sense_null, tcp_usr_shutdown, - tcp_sockaddr, sosend, soreceive, sopoll + tcp_sockaddr, sosend, soreceive, sopoll, in_pcbsosetlabel }; #ifdef INET6 @@ -825,7 +825,7 @@ struct pr_usrreqs tcp6_usrreqs = { tcp6_usr_connect, pru_connect2_notsupp, in6_control, tcp_usr_detach, tcp_usr_disconnect, tcp6_usr_listen, in6_mapped_peeraddr, tcp_usr_rcvd, tcp_usr_rcvoob, tcp_usr_send, pru_sense_null, tcp_usr_shutdown, - in6_mapped_sockaddr, sosend, soreceive, sopoll + in6_mapped_sockaddr, sosend, soreceive, sopoll, in_pcbsosetlabel }; #endif /* INET6 */ |