From 78a117e6fa3ea5484baa385417846432dcafd758 Mon Sep 17 00:00:00 2001 From: rwatson Date: Sat, 23 Aug 2008 15:26:36 +0000 Subject: Introduce two related changes to the TrustedBSD MAC Framework: (1) Abstract interpreter vnode labeling in execve(2) and mac_execve(2) so that the general exec code isn't aware of the details of allocating, copying, and freeing labels, rather, simply passes in a void pointer to start and stop functions that will be used by the framework. This change will be MFC'd. (2) Introduce a new flags field to the MAC_POLICY_SET(9) interface allowing policies to declare which types of objects require label allocation, initialization, and destruction, and define a set of flags covering various supported object types (MPC_OBJECT_PROC, MPC_OBJECT_VNODE, MPC_OBJECT_INPCB, ...). This change reduces the overhead of compiling the MAC Framework into the kernel if policies aren't loaded, or if policies require labels on only a small number or even no object types. Each time a policy is loaded or unloaded, we recalculate a mask of labeled object types across all policies present in the system. Eliminate MAC_ALWAYS_LABEL_MBUF option as it is no longer required. MFC after: 1 week ((1) only) Reviewed by: csjp Obtained from: TrustedBSD Project Sponsored by: Apple, Inc. --- sys/security/mac_lomac/mac_lomac.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'sys/security/mac_lomac/mac_lomac.c') diff --git a/sys/security/mac_lomac/mac_lomac.c b/sys/security/mac_lomac/mac_lomac.c index 25d6273..e1b53ff 100644 --- a/sys/security/mac_lomac/mac_lomac.c +++ b/sys/security/mac_lomac/mac_lomac.c @@ -2981,5 +2981,25 @@ static struct mac_policy_ops lomac_ops = .mpo_vnode_setlabel_extattr = lomac_vnode_setlabel_extattr, }; +#define LOMAC_OBJECTS (MPC_OBJECT_CRED | \ + /* MPC_OBJECT_PROC | */ \ + MPC_OBJECT_VNODE | \ + MPC_OBJECT_INPCB | \ + MPC_OBJECT_SOCKET | \ + MPC_OBJECT_DEVFS | \ + MPC_OBJECT_MBUF | \ + MPC_OBJECT_IPQ | \ + MPC_OBJECT_IFNET | \ + MPC_OBJECT_BPFDESC | \ + MPC_OBJECT_PIPE | \ + MPC_OBJECT_MOUNT | \ + /* MPC_OBJECT_POSIXSEM | */ \ + /* MPC_OBJECT_POSIXSHM | */ \ + /* MPC_OBJECT_SYSVMSG | */ \ + /* MPC_OBJECT_SYSVMSQ | */ \ + /* MPC_OBJECT_SYSVSEM | */ \ + /* MPC_OBJECT_SYSVSHM | */ \ + MPC_OBJECT_SYNCACHE) + MAC_POLICY_SET(&lomac_ops, mac_lomac, "TrustedBSD MAC/LOMAC", - MPC_LOADTIME_FLAG_NOTLATE | MPC_LOADTIME_FLAG_LABELMBUFS, &lomac_slot); + MPC_LOADTIME_FLAG_NOTLATE, &lomac_slot, LOMAC_OBJECTS); -- cgit v1.1