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Introduce experimental support for MAC in the AppleTalk/EtherTalk stack.

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Label link layer mbufs as they are created for transmission, check
mbufs before delivering them to sockets, label mbufs as they are created
from sockets, and preserve mbuf labels if mbufs are copied.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
This commit is contained in:
Robert Watson 2002-08-15 18:58:44 +00:00
parent 2caa6a5afe
commit a7320549ac
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=101937
3 changed files with 28 additions and 0 deletions
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8
sys/netatalk/aarp.c
View File

@ -6,9 +6,11 @@
*/
#include "opt_atalk.h"
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mac.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
@ -128,6 +130,9 @@ aarpwhohas( struct arpcom *ac, struct sockaddr_at *sat )
if (( m = m_gethdr( M_DONTWAIT, MT_DATA )) == NULL ) {
return;
}
#ifdef MAC
mac_create_mbuf_linklayer(&ac->ac_if, m);
#endif
m->m_len = sizeof( *ea );
m->m_pkthdr.len = sizeof( *ea );
MH_ALIGN( m, sizeof( *ea ));
@ -549,6 +554,9 @@ aarpprobe( void *arg )
if (( m = m_gethdr( M_DONTWAIT, MT_DATA )) == NULL ) {
return;
}
#ifdef MAC
mac_create_mbuf_linklayer(&ac->ac_if, m);
#endif
m->m_len = sizeof( *ea );
m->m_pkthdr.len = sizeof( *ea );
MH_ALIGN( m, sizeof( *ea ));

10
sys/netatalk/ddp_input.c
View File

@ -5,9 +5,12 @@
* $FreeBSD$
*/
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mac.h>
#include <sys/mbuf.h>
#include <sys/signalvar.h>
#include <sys/socket.h>
@ -395,6 +398,13 @@ ddp_input( m, ifp, elh, phase )
return;
}
#ifdef MAC
if (mac_check_socket_deliver(ddp->ddp_socket, m) != 0) {
m_freem( m );
return;
}
#endif
/*
* If we found one, deliver th epacket to the socket
*/

10
sys/netatalk/ddp_output.c
View File

@ -23,8 +23,11 @@
/* $FreeBSD$ */
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mac.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
@ -48,6 +51,10 @@ ddp_output( struct mbuf *m, struct socket *so)
struct ddpehdr *deh;
struct ddpcb *ddp = sotoddpcb( so );
#ifdef MAC
mac_create_mbuf_from_socket(so, m);
#endif
M_PREPEND( m, sizeof( struct ddpehdr ), M_TRYWAIT );
deh = mtod( m, struct ddpehdr *);
@ -195,6 +202,9 @@ ddp_route( struct mbuf *m, struct route *ro)
printf("ddp_route: no buffers\n");
return( ENOBUFS );
}
#ifdef MAC
mac_create_mbuf_from_mbuf(m, m0);
#endif
m0->m_next = m;
/* XXX perhaps we ought to align the header? */
m0->m_len = SZ_ELAPHDR;