Robert Watson a557af222b 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		2003-11-18 00:39:07 +00:00
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ipatm	Include <sys/malloc.h> for the declaration of malloc(), etc. instead	2003-11-14 21:02:10 +00:00
sigpvc
spans
uni
atm_aal5.c	Introduce a MAC label reference in 'struct inpcb', which caches	2003-11-18 00:39:07 +00:00
atm_cm.c
atm_cm.h
atm_device.c
atm_if.c
atm_if.h
atm_ioctl.h
atm_pcb.h
atm_proto.c
atm_sap.h
atm_sigmgr.h
atm_signal.c
atm_socket.c
atm_stack.h
atm_subr.c
atm_sys.h
atm_usrreq.c	Introduce a MAC label reference in 'struct inpcb', which caches	2003-11-18 00:39:07 +00:00
atm_var.h
atm_vc.h
atm.h
port.h
queue.h