Commit Graph

119 Commits

Author SHA1 Message Date
Robert Watson
acd3428b7d Sweep kernel replacing suser(9) calls with priv(9) calls, assigning
specific privilege names to a broad range of privileges.  These may
require some future tweaking.

Sponsored by:           nCircle Network Security, Inc.
Obtained from:          TrustedBSD Project
Discussed on:           arch@
Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri,
                        Alex Lyashkov <umka at sevcity dot net>,
                        Skip Ford <skip dot ford at verizon dot net>,
                        Antoine Brodin <antoine dot brodin at laposte dot net>
2006-11-06 13:42:10 +00:00
Robert Watson
aed5570872 Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h
begun with a repo-copy of mac.h to mac_framework.h.  sys/mac.h now
contains the userspace and user<->kernel API and definitions, with all
in-kernel interfaces moved to mac_framework.h, which is now included
across most of the kernel instead.

This change is the first step in a larger cleanup and sweep of MAC
Framework interfaces in the kernel, and will not be MFC'd.

Obtained from:	TrustedBSD Project
Sponsored by:	SPARTA
2006-10-22 11:52:19 +00:00
Robert Watson
738f14d4b1 Remove MAC_DEBUG label counters, which were used to debug leaks and
other problems while labels were first being added to various kernel
objects.  They have outlived their usefulness.

MFC after:	1 month
Suggested by:	Christopher dot Vance at SPARTA dot com
Obtained from:	TrustedBSD Project
2006-09-20 13:33:41 +00:00
Robert Watson
3c308b091f Eliminate MAC entry point mac_create_mbuf_from_mbuf(), which is
redundant with respect to existing mbuf copy label routines.  Expose
a new mac_copy_mbuf() routine at the top end of the Framework and
use that; use the existing mpo_copy_mbuf_label() routine on the
bottom end.

Obtained from:	TrustedBSD Project
Sponsored by:	SPARTA, SPAWAR
Approved by:	re (scottl)
2005-07-05 23:39:51 +00:00
Robert Watson
2220907b6e Introduce a temporary mutex, mac_ifnet_mtx, to lock MAC labels on
network interfaces.  This global mutex will protect all ifnet labels.
Acquire the mutex across various MAC activities on interfaces, such
as security checks, propagating interface labels to mbufs generated
from the interface, retrieving and setting the interface label.

Introduce mpo_copy_ifnet_label MAC policy entry point to copy the
value of an interface label from one label to another.  Use this
to avoid performing a label externalize while holding mac_ifnet_mtx;
copy the label to a temporary ifnet label and then externalize that.

Implement mpo_copy_ifnet_label for various MAC policies that
implement interface labeling using generic label copying routines.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, McAfee Research
2004-06-24 03:34:46 +00:00
Robert Watson
583284e1d7 If the mbuf pointer passed to mac_mbuf_to_label() is NULL, or the tag
lookup for the label tag fails, return NULL rather than something close
to NULL.  This scenario occurs if mbuf header labeling is optional and
a policy requiring labeling is loaded, resulting in some mbufs having
labels and others not.  Previously, 0x14 would be returned because the
NULL from m_tag_find() was not treated specially.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, McAfee Research
2004-05-03 23:37:48 +00:00
Robert Watson
e33d9f2929 Define BPFD_LOCK_ASSERT() to assert the BPF descriptor lock.
Assert the BPF descriptor lock in the MAC calls referencing live
BPF descriptors.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, McAfee Research
2004-02-29 15:33:56 +00:00
Robert Watson
c66b4d8d26 Move inet and inet6 related MAC Framework entry points from mac_net.c
to a new mac_inet.c.  This code is now conditionally compiled based
on inet support being compiled into the kernel.

Move socket related MAC Framework entry points from mac_net.c to a new
mac_socket.c.

To do this, some additional _enforce MIB variables are now non-static.
In addition, mbuf_to_label() is now mac_mbuf_to_label() and non-static.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, McAfee Research
2004-02-26 03:51:04 +00:00
Robert Watson
f6a4109212 Update my personal copyrights and NETA copyrights in the kernel
to use the "year1-year3" format, as opposed to "year1, year2, year3".
This seems to make lawyers more happy, but also prevents the
lines from getting excessively long as the years start to add up.

Suggested by:	imp
2004-02-22 00:33:12 +00:00
Robert Watson
2d92ec9858 Switch TCP over to using the inpcb label when responding in timed
wait, rather than the socket label.  This avoids reaching up to
the socket layer during connection close, which requires locking
changes.  To do this, introduce MAC Framework entry point
mac_create_mbuf_from_inpcb(), which is called from tcp_twrespond()
instead of calling mac_create_mbuf_from_socket() or
mac_create_mbuf_netlayer().  Introduce MAC Policy entry point
mpo_create_mbuf_from_inpcb(), and implementations for various
policies, which generally just copy label data from the inpcb to
the mbuf.  Assert the inpcb lock in the entry point since we
require consistency for the inpcb label reference.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-12-17 14:55:11 +00:00
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
Robert Watson
b0323ea3aa Implement sockets support for __mac_get_fd() and __mac_set_fd()
system calls, and prefer these calls over getsockopt()/setsockopt()
for ABI reasons.  When addressing UNIX domain sockets, these calls
retrieve and modify the socket label, not the label of the
rendezvous vnode.

- Create mac_copy_socket_label() entry point based on
  mac_copy_pipe_label() entry point, intended to copy the socket
  label into temporary storage that doesn't require a socket lock
  to be held (currently Giant).

- Implement mac_copy_socket_label() for various policies.

- Expose socket label allocation, free, internalize, externalize
  entry points as non-static from mac_net.c.

- Use mac_socket_label_set() in __mac_set_fd().

MAC-aware applications may now use mac_get_fd(), mac_set_fd(), and
mac_get_peer() to retrieve and set various socket labels without
directly invoking the getsockopt() interface.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-16 23:31:45 +00:00
Robert Watson
c9ea2dcf62 Abstract the label checking and setting logic from
mac_setsockopt_label() into mac_socket_label_set(); make it non-static
so that it can be invoked from kern_mac.c for mac_set_fd().

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-16 20:01:50 +00:00
Robert Watson
9e71dd0feb Reduce gratuitous redundancy and length in function names:
mac_setsockopt_label_set() -> mac_setsockopt_label()
  mac_getsockopt_label_get() -> mac_getsockopt_label()
  mac_getsockopt_peerlabel_get() -> mac_getsockopt_peerlabel()

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-16 18:25:20 +00:00
Robert Watson
5d9d409ca9 Whitespace fix. 2003-11-16 03:17:30 +00:00
Robert Watson
eca8a663d4 Modify the MAC Framework so that instead of embedding a (struct label)
in various kernel objects to represent security data, we embed a
(struct label *) pointer, which now references labels allocated using
a UMA zone (mac_label.c).  This allows the size and shape of struct
label to be varied without changing the size and shape of these kernel
objects, which become part of the frozen ABI with 5-STABLE.  This opens
the door for boot-time selection of the number of label slots, and hence
changes to the bound on the number of simultaneous labeled policies
at boot-time instead of compile-time.  This also makes it easier to
embed label references in new objects as required for locking/caching
with fine-grained network stack locking, such as inpcb structures.

This change also moves us further in the direction of hiding the
structure of kernel objects from MAC policy modules, not to mention
dramatically reducing the number of '&' symbols appearing in both the
MAC Framework and MAC policy modules, and improving readability.

While this results in minimal performance change with MAC enabled, it
will observably shrink the size of a number of critical kernel data
structures for the !MAC case, and should have a small (but measurable)
performance benefit (i.e., struct vnode, struct socket) do to memory
conservation and reduced cost of zeroing memory.

NOTE: Users of MAC must recompile their kernel and all MAC modules as a
result of this change.  Because this is an API change, third party
MAC modules will also need to be updated to make less use of the '&'
symbol.

Suggestions from:	bmilekic
Obtained from:		TrustedBSD Project
Sponsored by:		DARPA, Network Associates Laboratories
2003-11-12 03:14:31 +00:00
Robert Watson
bea2b56b26 When allocation of a socket peer label fails, scrub what was
successfully initialized in the label as a socket peer label, not a
socket label.  For current policy modules, this didn't make a
difference, but if a policy module had label data in the peer label
that was to be GC'd in a different way than the normal socket label,
it might have been a problem.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-07 22:31:27 +00:00
Robert Watson
83b7b0edca Remove the flags argument from mac_externalize_*_label(), as it's not
passed into policies or used internally to the MAC Framework.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-06 03:42:43 +00:00
Robert Watson
da77b2fa6b Make MAC_EXTERNALIZE() and MAC_INTERNALIZE() simply take the object
type, rather than "object_label" as the first argument.  This reduces
complexity a little for the consumer, and also makes it easier for
use to rename the underlying entry points in struct mac_policy_obj.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-10-25 15:28:20 +00:00
Robert Watson
28e65e3d2b Remove non-network related contents from mac_net.c. Leave:
Network and socket enforcement toggles.
  Counters for network objects (mbufs, ifnets, bpfdecs, sockets, and ipqs).
  Label management routines for network objects.
  Life cycle events for network objects.
  Label internalization/externalization/relabel for ifnets, sockets,
    including ioctl implementations for sockets, ifnets.
  Access control checks relating to network obejcts.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-10-22 19:15:34 +00:00
Robert Watson
cc7b13bfe0 If the struct mac copied into the kernel has a negative length, return
EINVAL rather than failing the following malloc due to the value being
too large.
2003-09-29 18:35:17 +00:00
Robert Watson
a6a65b05d5 Fix a mac_policy_list reference to be a mac_static_policy_list
reference: this fixes mac_syscall() for static policies when using
optimized locking.

Obtained from:	TrustedBSD Project
Sponosred by:	DARPA, Network Associates Laboratories
2003-08-26 17:29:02 +00:00
Robert Watson
eb8c7f9992 Introduce two new MAC Framework and MAC policy entry points:
mac_reflect_mbuf_icmp()
  mac_reflect_mbuf_tcp()

These entry points permit MAC policies to do "update in place"
changes to the labels on ICMP and TCP mbuf headers when an ICMP or
TCP response is generated to a packet outside of the context of
an existing socket.  For example, in respond to a ping or a RST
packet to a SYN on a closed port.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-08-21 18:21:22 +00:00
Robert Watson
c096756c00 Add mac_check_vnode_deleteextattr() and mac_check_vnode_listextattr():
explicit access control checks to delete and list extended attributes
on a vnode, rather than implicitly combining with the setextattr and
getextattr checks.  This reflects EA API changes in the kernel made
recently, including the move to explicit VOP's for both of these
operations.

Obtained from:	TrustedBSD PRoject
Sponsored by:	DARPA, Network Associates Laboratories
2003-08-21 13:53:01 +00:00
Robert Watson
8d8d5ea8f2 Remove about 40 lines of #ifdef/#endif by using new macros
MAC_DEBUG_COUNTER_INC() and MAC_DEBUG_COUNTER_DEC() to maintain
debugging counter values rather than #ifdef'ing the atomic
operations to MAC_DEBUG.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-08-20 19:16:49 +00:00
Robert Watson
19c3e120f0 Attempt to simplify #ifdef logic for MAC_ALWAYS_LABEL_MBUF.
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-08-01 15:45:14 +00:00
Robert Watson
f51e58036e Redesign the externalization APIs from the MAC Framework to
the MAC policy modules to improve robustness against C string
bugs and vulnerabilities.  Following these revisions, all
string construction of labels for export to userspace (or
elsewhere) is performed using the sbuf API, which prevents
the consumer from having to perform laborious and intricate
pointer and buffer checks.  This substantially simplifies
the externalization logic, both at the MAC Framework level,
and in individual policies; this becomes especially useful
when policies export more complex label data, such as with
compartments in Biba and MLS.

Bundled in here are some other minor fixes associated with
externalization: including avoiding malloc while holding the
process mutex in mac_lomac, and hence avoid a failure mode
when printing labels during a downgrade operation due to
the removal of the M_NOWAIT case.

This has been running in the MAC development tree for about
three weeks without problems.

Obtained from:	TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
2003-06-23 01:26:34 +00:00
Poul-Henning Kamp
3b6d965263 Add a f_vnode field to struct file.
Several of the subtypes have an associated vnode which is used for
stuff like the f*() functions.

By giving the vnode a speparate field, a number of checks for the specific
subtype can be replaced simply with a check for f_vnode != NULL, and
we can later free f_data up to subtype specific use.

At this point in time, f_data still points to the vnode, so any code I
might have overlooked will still work.
2003-06-22 08:41:43 +00:00
David E. O'Brien
677b542ea2 Use __FBSDID(). 2003-06-11 00:56:59 +00:00
Robert Watson
b2aef57123 Rename MAC_MAX_POLICIES to MAC_MAX_SLOTS, since the variables and
constants in question refer to the number of label slots, not the
maximum number of policies that may be loaded.  This should reduce
confusion regarding an element in the MAC sysctl MIB, as well as
make it more clear what the affect of changing the compile-time
constants is.

Approved by:	re (jhb)
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-05-08 19:49:42 +00:00
Robert Watson
41a17fe326 Clean up locking for the MAC Framework:
(1) Accept that we're now going to use mutexes, so don't attempt
    to avoid treating them as mutexes.  This cleans up locking
    accessor function names some.

(2) Rename variables to _mtx, _cv, _count, simplifying the naming.

(3) Add a new form of the _busy() primitive that conditionally
    makes the list busy: if there are entries on the list, bump
    the busy count.  If there are no entries, don't bump the busy
    count.  Return a boolean indicating whether or not the busy
    count was bumped.

(4) Break mac_policy_list into two lists: one with the same name
    holding dynamic policies, and a new list, mac_static_policy_list,
    which holds policies loaded before mac_late and without the
    unload flag set.  The static list may be accessed without
    holding the busy count, since it can't change at run-time.

(5) In general, prefer making the list busy conditionally, meaning
    we pay only one mutex lock per entry point if all modules are
    on the static list, rather than two (since we don't have to
    lower the busy count when we're done with the framework).  For
    systems running just Biba or MLS, this will halve the mutex
    accesses in the network stack, and may offer a substantial
    performance benefits.

(6) Lay the groundwork for a dynamic-free kernel option which
    eliminates all locking associated with dynamically loaded or
    unloaded policies, for pre-configured systems requiring
    maximum performance but less run-time flexibility.

These changes have been running for a few weeks on MAC development
branch systems.

Approved by:	re (jhb)
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-05-07 17:49:24 +00:00
Alan Cox
b6e48e0372 - Acquire the vm_object's lock when performing vm_object_page_clean().
- Add a parameter to vm_pageout_flush() that tells vm_pageout_flush()
   whether its caller has locked the vm_object.  (This is a temporary
   measure to bootstrap vm_object locking.)
2003-04-24 04:31:25 +00:00
Robert Watson
2d3db0b823 Update NAI copyright to 2003, missed in earlier commits and merges. 2003-04-18 19:57:37 +00:00
Robert Watson
6d1a6a9a9a mac_init_mbuf_tag() accepts malloc flags, not mbuf allocator flags, so
don't try and convert the argument flags to malloc flags, or we risk
implicitly requesting blocking and generating witness warnings.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-04-15 19:33:23 +00:00
Robert Watson
225bff6f8b Move MAC label storage for mbufs into m_tags from the m_pkthdr structure,
returning some additional room in the first mbuf in a chain, and
avoiding feature-specific contents in the mbuf header.  To do this:

- Modify mbuf_to_label() to extract the tag, returning NULL if not
  found.

- Introduce mac_init_mbuf_tag() which does most of the work
  mac_init_mbuf() used to do, except on an m_tag rather than an
  mbuf.

- Scale back mac_init_mbuf() to perform m_tag allocation and invoke
  mac_init_mbuf_tag().

- Replace mac_destroy_mbuf() with mac_destroy_mbuf_tag(), since
  m_tag's are now GC'd deep in the m_tag/mbuf code rather than
  at a higher level when mbufs are directly free()'d.

- Add mac_copy_mbuf_tag() to support m_copy_pkthdr() and related
  notions.

- Generally change all references to mbuf labels so that they use
  mbuf_to_label() rather than &mbuf->m_pkthdr.label.  This
  required no changes in the MAC policies (yay!).

- Tweak mbuf release routines to not call mac_destroy_mbuf(),
  tag destruction takes care of it for us now.

- Remove MAC magic from m_copy_pkthdr() and m_move_pkthdr() --
  the existing m_tag support does all this for us.  Note that
  we can no longer just zero the m_tag list on the target mbuf,
  rather, we have to delete the chain because m_tag's will
  already be hung off freshly allocated mbuf's.

- Tweak m_tag copying routines so that if we're copying a MAC
  m_tag, we don't do a binary copy, rather, we initialize the
  new storage and do a deep copy of the label.

- Remove use of MAC_FLAG_INITIALIZED in a few bizarre places
  having to do with mbuf header copies previously.

- When an mbuf is copied in ip_input(), we no longer need to
  explicitly copy the label because it will get handled by the
  m_tag code now.

- No longer any weird handling of MAC labels in if_loop.c during
  header copies.

- Add MPC_LOADTIME_FLAG_LABELMBUFS flag to Biba, MLS, mac_test.
  In mac_test, handle the label==NULL case, since it can be
  dynamically loaded.

In order to improve performance with this change, introduce the notion
of "lazy MAC label allocation" -- only allocate m_tag storage for MAC
labels if we're running with a policy that uses MAC labels on mbufs.
Policies declare this intent by setting the MPC_LOADTIME_FLAG_LABELMBUFS
flag in their load-time flags field during declaration.  Note: this
opens up the possibility of post-boot policy modules getting back NULL
slot entries even though they have policy invariants of non-NULL slot
entries, as the policy might have been loaded after the mbuf was
allocated, leaving the mbuf without label storage.  Policies that cannot
handle this case must be declared as NOTLATE, or must be modified.

- mac_labelmbufs holds the current cumulative status as to whether
  any policies require mbuf labeling or not.  This is updated whenever
  the active policy set changes by the function mac_policy_updateflags().
  The function iterates the list and checks whether any have the
  flag set.  Write access to this variable is protected by the policy
  list; read access is currently not protected for performance reasons.
  This might change if it causes problems.

- Add MAC_POLICY_LIST_ASSERT_EXCLUSIVE() to permit the flags update
  function to assert appropriate locks.

- This makes allocation in mac_init_mbuf() conditional on the flag.

Reviewed by:	sam
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-04-14 20:39:06 +00:00
Robert Watson
10eeb10c63 Abstract access to the mbuf header label behind a new function,
mbuf_to_label().  This permits the vast majority of entry point code
to be unaware that labels are stored in m->m_pkthdr.label, such that
we can experiment storage of labels elsewhere (such as in m_tags).

Reviewed by:	sam
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-04-14 18:11:18 +00:00
Dag-Erling Smørgrav
fe58453891 Introduce an M_ASSERTPKTHDR() macro which performs the very common task
of asserting that an mbuf has a packet header.  Use it instead of hand-
rolled versions wherever applicable.

Submitted by:	Hiten Pandya <hiten@unixdaemons.com>
2003-04-08 14:25:47 +00:00
Robert Watson
5e7ce4785f Modify the mac_init_ipq() MAC Framework entry point to accept an
additional flags argument to indicate blocking disposition, and
pass in M_NOWAIT from the IP reassembly code to indicate that
blocking is not OK when labeling a new IP fragment reassembly
queue.  This should eliminate some of the WITNESS warnings that
have started popping up since fine-grained IP stack locking
started going in; if memory allocation fails, the creation of
the fragment queue will be aborted.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-03-26 15:12:03 +00:00
Robert Watson
9283578946 Instrument sysarch() MD privileged I/O access interfaces with a MAC
check, mac_check_sysarch_ioperm(), permitting MAC security policy
modules to control access to these interfaces.  Currently, they
protect access to IOPL on i386, and setting HAE on Alpha.
Additional checks might be required on other platforms to prevent
bypass of kernel security protections by unauthorized processes.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-03-06 04:47:47 +00:00
Robert Watson
1b2c2ab29a Provide a mac_check_system_swapoff() entry point, which permits MAC
modules to authorize disabling of swap against a particular vnode.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-03-05 23:50:15 +00:00
John Baldwin
263067951a Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls
to WITNESS_WARN().
2003-03-04 21:03:05 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Matthew Dillon
48e3128b34 Bow to the whining masses and change a union back into void *. Retain
removal of unnecessary casts and throw in some minor cleanups to see if
anyone complains, just for the hell of it.
2003-01-13 00:33:17 +00:00
Matthew Dillon
cd72f2180b Change struct file f_data to un_data, a union of the correct struct
pointer types, and remove a huge number of casts from code using it.

Change struct xfile xf_data to xun_data (ABI is still compatible).

If we need to add a #define for f_data and xf_data we can, but I don't
think it will be necessary.  There are no operational changes in this
commit.
2003-01-12 01:37:13 +00:00
Alfred Perlstein
d1e405c5ce SCARGS removal take II. 2002-12-14 01:56:26 +00:00
Alfred Perlstein
bc9e75d7ca Backout removal SCARGS, the code freeze is only "selectively" over. 2002-12-13 22:41:47 +00:00
Alfred Perlstein
0bbe7292e1 Remove SCARGS.
Reviewed by: md5
2002-12-13 22:27:25 +00:00
Robert Watson
990b4b2dc5 Remove dm_root entry from struct devfs_mount. It's never set, and is
unused.  Replace it with a dm_mount back-pointer to the struct mount
that the devfs_mount is associated with.  Export that pointer to MAC
Framework entry points, where all current policies don't use the
pointer.  This permits the SEBSD port of SELinux's FLASK/TE to compile
out-of-the-box on 5.0-CURRENT with full file system labeling support.

Approved by:	re (murray)
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2002-12-09 03:44:28 +00:00
Robert Watson
4d10c0ce5f Un-staticize mac_cred_mmapped_drop_perms() so that it may be used
by policy modules making use of downgrades in the MAC AST event.  This
is required by the mac_lomac port of LOMAC to the MAC Framework.

Approved by:	re
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2002-11-26 17:11:57 +00:00