96adb90996
- Change mpo_init_foo(obj, label) and mpo_destroy_foo(obj, label) policy
entry points to mpo_init_foo_label(label) and
mpo_destroy_foo_label(label). This will permit the use of the same
entry points for holding temporary type-specific label during
internalization and externalization, as well as for caching purposes.
- Because of this, break out mpo_{init,destroy}_socket() and
mpo_{init,destroy}_mount() into seperate entry points for socket
main/peer labels and mount main/fs labels.
- Since the prototype for label initialization is the same across almost
all entry points, implement these entry points using common
implementations for Biba, MLS, and Test, reducing the number of
almost identical looking functions.
This simplifies policy implementation, as well as preparing us for the
merge of the new flexible userland API for managing labels on objects.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
2133 lines
48 KiB
C
2133 lines
48 KiB
C
/*-
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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*
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* This software was developed for the FreeBSD Project in part by NAI Labs,
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* the Security Research Division of Network Associates, Inc. under
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* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
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* CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Developed by the TrustedBSD Project.
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* Biba fixed label mandatory integrity policy.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/acl.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/mac.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/sysent.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/pipe.h>
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#include <sys/sysctl.h>
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#include <fs/devfs/devfs.h>
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#include <net/bpfdesc.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <netinet/in.h>
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#include <netinet/ip_var.h>
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#include <vm/vm.h>
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#include <sys/mac_policy.h>
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#include <security/mac_biba/mac_biba.h>
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SYSCTL_DECL(_security_mac);
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SYSCTL_NODE(_security_mac, OID_AUTO, biba, CTLFLAG_RW, 0,
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"TrustedBSD mac_biba policy controls");
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static int mac_biba_enabled = 0;
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SYSCTL_INT(_security_mac_biba, OID_AUTO, enabled, CTLFLAG_RW,
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&mac_biba_enabled, 0, "Enforce MAC/Biba policy");
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TUNABLE_INT("security.mac.biba.enabled", &mac_biba_enabled);
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|
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static int destroyed_not_inited;
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SYSCTL_INT(_security_mac_biba, OID_AUTO, destroyed_not_inited, CTLFLAG_RD,
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&destroyed_not_inited, 0, "Count of labels destroyed but not inited");
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|
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static int trust_all_interfaces = 0;
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SYSCTL_INT(_security_mac_biba, OID_AUTO, trust_all_interfaces, CTLFLAG_RD,
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&trust_all_interfaces, 0, "Consider all interfaces 'trusted' by MAC/Biba");
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TUNABLE_INT("security.mac.biba.trust_all_interfaces", &trust_all_interfaces);
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static char trusted_interfaces[128];
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SYSCTL_STRING(_security_mac_biba, OID_AUTO, trusted_interfaces, CTLFLAG_RD,
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trusted_interfaces, 0, "Interfaces considered 'trusted' by MAC/Biba");
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TUNABLE_STR("security.mac.biba.trusted_interfaces", trusted_interfaces,
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sizeof(trusted_interfaces));
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static int mac_biba_revocation_enabled = 0;
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SYSCTL_INT(_security_mac_biba, OID_AUTO, revocation_enabled, CTLFLAG_RW,
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&mac_biba_revocation_enabled, 0, "Revoke access to objects on relabel");
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TUNABLE_INT("security.mac.biba.revocation_enabled",
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&mac_biba_revocation_enabled);
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static int mac_biba_slot;
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#define SLOT(l) ((struct mac_biba *)LABEL_TO_SLOT((l), mac_biba_slot).l_ptr)
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MALLOC_DEFINE(M_MACBIBA, "biba label", "MAC/Biba labels");
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static int mac_biba_check_vnode_open(struct ucred *cred, struct vnode *vp,
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struct label *vnodelabel, mode_t acc_mode);
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static struct mac_biba *
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biba_alloc(int flag)
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{
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struct mac_biba *mac_biba;
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mac_biba = malloc(sizeof(struct mac_biba), M_MACBIBA, M_ZERO | flag);
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return (mac_biba);
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}
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static void
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biba_free(struct mac_biba *mac_biba)
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{
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if (mac_biba != NULL)
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free(mac_biba, M_MACBIBA);
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else
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atomic_add_int(&destroyed_not_inited, 1);
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}
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static int
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mac_biba_dominate_element(struct mac_biba_element *a,
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struct mac_biba_element *b)
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{
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switch(a->mbe_type) {
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_HIGH:
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return (1);
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case MAC_BIBA_TYPE_LOW:
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switch (b->mbe_type) {
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case MAC_BIBA_TYPE_GRADE:
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case MAC_BIBA_TYPE_HIGH:
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return (0);
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_LOW:
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return (1);
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default:
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panic("mac_biba_dominate_element: b->mbe_type invalid");
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}
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case MAC_BIBA_TYPE_GRADE:
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switch (b->mbe_type) {
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_LOW:
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return (1);
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case MAC_BIBA_TYPE_HIGH:
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return (0);
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case MAC_BIBA_TYPE_GRADE:
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return (a->mbe_grade >= b->mbe_grade);
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default:
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panic("mac_biba_dominate_element: b->mbe_type invalid");
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}
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default:
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panic("mac_biba_dominate_element: a->mbe_type invalid");
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}
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return (0);
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}
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static int
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mac_biba_range_in_range(struct mac_biba *rangea, struct mac_biba *rangeb)
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{
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return (mac_biba_dominate_element(&rangeb->mb_rangehigh,
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&rangea->mb_rangehigh) &&
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mac_biba_dominate_element(&rangea->mb_rangelow,
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&rangeb->mb_rangelow));
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}
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static int
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mac_biba_single_in_range(struct mac_biba *single, struct mac_biba *range)
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|
{
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KASSERT((single->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
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("mac_biba_single_in_range: a not single"));
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KASSERT((range->mb_flags & MAC_BIBA_FLAG_RANGE) != 0,
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("mac_biba_single_in_range: b not range"));
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return (mac_biba_dominate_element(&range->mb_rangehigh,
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&single->mb_single) &&
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mac_biba_dominate_element(&single->mb_single,
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&range->mb_rangelow));
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return (1);
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}
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static int
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mac_biba_dominate_single(struct mac_biba *a, struct mac_biba *b)
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{
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KASSERT((a->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
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("mac_biba_dominate_single: a not single"));
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KASSERT((b->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
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("mac_biba_dominate_single: b not single"));
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return (mac_biba_dominate_element(&a->mb_single, &b->mb_single));
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}
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static int
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mac_biba_equal_element(struct mac_biba_element *a, struct mac_biba_element *b)
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|
{
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if (a->mbe_type == MAC_BIBA_TYPE_EQUAL ||
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b->mbe_type == MAC_BIBA_TYPE_EQUAL)
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return (1);
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return (a->mbe_type == b->mbe_type && a->mbe_grade == b->mbe_grade);
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}
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static int
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mac_biba_equal_single(struct mac_biba *a, struct mac_biba *b)
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{
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KASSERT((a->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
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("mac_biba_equal_single: a not single"));
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KASSERT((b->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
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("mac_biba_equal_single: b not single"));
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return (mac_biba_equal_element(&a->mb_single, &b->mb_single));
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}
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static int
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mac_biba_valid(struct mac_biba *mac_biba)
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{
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if (mac_biba->mb_flags & MAC_BIBA_FLAG_SINGLE) {
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switch (mac_biba->mb_single.mbe_type) {
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case MAC_BIBA_TYPE_GRADE:
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break;
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_HIGH:
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case MAC_BIBA_TYPE_LOW:
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if (mac_biba->mb_single.mbe_grade != 0)
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return (EINVAL);
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break;
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default:
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return (EINVAL);
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}
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} else {
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if (mac_biba->mb_single.mbe_type != MAC_BIBA_TYPE_UNDEF)
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return (EINVAL);
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}
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|
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if (mac_biba->mb_flags & MAC_BIBA_FLAG_RANGE) {
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switch (mac_biba->mb_rangelow.mbe_type) {
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case MAC_BIBA_TYPE_GRADE:
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break;
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_HIGH:
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case MAC_BIBA_TYPE_LOW:
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if (mac_biba->mb_rangelow.mbe_grade != 0)
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return (EINVAL);
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break;
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default:
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return (EINVAL);
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}
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|
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switch (mac_biba->mb_rangehigh.mbe_type) {
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case MAC_BIBA_TYPE_GRADE:
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break;
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|
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case MAC_BIBA_TYPE_EQUAL:
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case MAC_BIBA_TYPE_HIGH:
|
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case MAC_BIBA_TYPE_LOW:
|
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if (mac_biba->mb_rangehigh.mbe_grade != 0)
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return (EINVAL);
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break;
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|
default:
|
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return (EINVAL);
|
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}
|
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if (!mac_biba_dominate_element(&mac_biba->mb_rangehigh,
|
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&mac_biba->mb_rangelow))
|
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return (EINVAL);
|
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} else {
|
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if (mac_biba->mb_rangelow.mbe_type != MAC_BIBA_TYPE_UNDEF ||
|
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mac_biba->mb_rangehigh.mbe_type != MAC_BIBA_TYPE_UNDEF)
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return (EINVAL);
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}
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|
|
return (0);
|
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}
|
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|
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static void
|
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mac_biba_set_range(struct mac_biba *mac_biba, u_short typelow,
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u_short gradelow, u_short typehigh, u_short gradehigh)
|
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{
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mac_biba->mb_rangelow.mbe_type = typelow;
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mac_biba->mb_rangelow.mbe_grade = gradelow;
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mac_biba->mb_rangehigh.mbe_type = typehigh;
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mac_biba->mb_rangehigh.mbe_grade = gradehigh;
|
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mac_biba->mb_flags |= MAC_BIBA_FLAG_RANGE;
|
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}
|
|
|
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static void
|
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mac_biba_set_single(struct mac_biba *mac_biba, u_short type, u_short grade)
|
|
{
|
|
|
|
mac_biba->mb_single.mbe_type = type;
|
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mac_biba->mb_single.mbe_grade = grade;
|
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mac_biba->mb_flags |= MAC_BIBA_FLAG_SINGLE;
|
|
}
|
|
|
|
static void
|
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mac_biba_copy_range(struct mac_biba *labelfrom, struct mac_biba *labelto)
|
|
{
|
|
KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_RANGE) != 0,
|
|
("mac_biba_copy_range: labelfrom not range"));
|
|
|
|
labelto->mb_rangelow = labelfrom->mb_rangelow;
|
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labelto->mb_rangehigh = labelfrom->mb_rangehigh;
|
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labelto->mb_flags |= MAC_BIBA_FLAG_RANGE;
|
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}
|
|
|
|
static void
|
|
mac_biba_copy_single(struct mac_biba *labelfrom, struct mac_biba *labelto)
|
|
{
|
|
|
|
KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
|
|
("mac_biba_copy_single: labelfrom not single"));
|
|
|
|
labelto->mb_single = labelfrom->mb_single;
|
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labelto->mb_flags |= MAC_BIBA_FLAG_SINGLE;
|
|
}
|
|
|
|
static void
|
|
mac_biba_copy_single_to_range(struct mac_biba *labelfrom,
|
|
struct mac_biba *labelto)
|
|
{
|
|
|
|
KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0,
|
|
("mac_biba_copy_single_to_range: labelfrom not single"));
|
|
|
|
labelto->mb_rangelow = labelfrom->mb_single;
|
|
labelto->mb_rangehigh = labelfrom->mb_single;
|
|
labelto->mb_flags |= MAC_BIBA_FLAG_RANGE;
|
|
}
|
|
|
|
/*
|
|
* Policy module operations.
|
|
*/
|
|
static void
|
|
mac_biba_destroy(struct mac_policy_conf *conf)
|
|
{
|
|
|
|
}
|
|
|
|
static void
|
|
mac_biba_init(struct mac_policy_conf *conf)
|
|
{
|
|
|
|
}
|
|
|
|
/*
|
|
* Label operations.
|
|
*/
|
|
static void
|
|
mac_biba_init_label(struct label *label)
|
|
{
|
|
|
|
SLOT(label) = biba_alloc(M_WAITOK);
|
|
}
|
|
|
|
static int
|
|
mac_biba_init_label_waitcheck(struct label *label, int flag)
|
|
{
|
|
|
|
SLOT(label) = biba_alloc(flag);
|
|
if (SLOT(label) == NULL)
|
|
return (ENOMEM);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_destroy_label(struct label *label)
|
|
{
|
|
|
|
biba_free(SLOT(label));
|
|
SLOT(label) = NULL;
|
|
}
|
|
|
|
static int
|
|
mac_biba_externalize(struct label *label, struct mac *extmac)
|
|
{
|
|
struct mac_biba *mac_biba;
|
|
|
|
mac_biba = SLOT(label);
|
|
|
|
if (mac_biba == NULL) {
|
|
printf("mac_biba_externalize: NULL pointer\n");
|
|
return (0);
|
|
}
|
|
|
|
extmac->m_biba = *mac_biba;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_internalize(struct label *label, struct mac *extmac)
|
|
{
|
|
struct mac_biba *mac_biba;
|
|
int error;
|
|
|
|
mac_biba = SLOT(label);
|
|
|
|
error = mac_biba_valid(mac_biba);
|
|
if (error)
|
|
return (error);
|
|
|
|
*mac_biba = extmac->m_biba;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Labeling event operations: file system objects, and things that look
|
|
* a lot like file system objects.
|
|
*/
|
|
static void
|
|
mac_biba_create_devfs_device(dev_t dev, struct devfs_dirent *devfs_dirent,
|
|
struct label *label)
|
|
{
|
|
struct mac_biba *mac_biba;
|
|
int biba_type;
|
|
|
|
mac_biba = SLOT(label);
|
|
if (strcmp(dev->si_name, "null") == 0 ||
|
|
strcmp(dev->si_name, "zero") == 0 ||
|
|
strcmp(dev->si_name, "random") == 0 ||
|
|
strncmp(dev->si_name, "fd/", strlen("fd/")) == 0)
|
|
biba_type = MAC_BIBA_TYPE_EQUAL;
|
|
else
|
|
biba_type = MAC_BIBA_TYPE_HIGH;
|
|
mac_biba_set_single(mac_biba, biba_type, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_devfs_directory(char *dirname, int dirnamelen,
|
|
struct devfs_dirent *devfs_dirent, struct label *label)
|
|
{
|
|
struct mac_biba *mac_biba;
|
|
|
|
mac_biba = SLOT(label);
|
|
mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_devfs_vnode(struct devfs_dirent *devfs_dirent,
|
|
struct label *direntlabel, struct vnode *vp, struct label *vnodelabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(direntlabel);
|
|
dest = SLOT(vnodelabel);
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_vnode(struct ucred *cred, struct vnode *parent,
|
|
struct label *parentlabel, struct vnode *child, struct label *childlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(childlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mount(struct ucred *cred, struct mount *mp,
|
|
struct label *mntlabel, struct label *fslabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(mntlabel);
|
|
mac_biba_copy_single(source, dest);
|
|
dest = SLOT(fslabel);
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_root_mount(struct ucred *cred, struct mount *mp,
|
|
struct label *mntlabel, struct label *fslabel)
|
|
{
|
|
struct mac_biba *mac_biba;
|
|
|
|
/* Always mount root as high integrity. */
|
|
mac_biba = SLOT(fslabel);
|
|
mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0);
|
|
mac_biba = SLOT(mntlabel);
|
|
mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_relabel_vnode(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, struct label *label)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(label);
|
|
dest = SLOT(vnodelabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_update_devfsdirent(struct devfs_dirent *devfs_dirent,
|
|
struct label *direntlabel, struct vnode *vp, struct label *vnodelabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(vnodelabel);
|
|
dest = SLOT(direntlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_update_procfsvnode(struct vnode *vp, struct label *vnodelabel,
|
|
struct ucred *cred)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(vnodelabel);
|
|
|
|
/*
|
|
* Only copy the single, not the range, since vnodes only have
|
|
* a single.
|
|
*/
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static int
|
|
mac_biba_update_vnode_from_externalized(struct vnode *vp,
|
|
struct label *vnodelabel, struct mac *extmac)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
int error;
|
|
|
|
source = &extmac->m_biba;
|
|
dest = SLOT(vnodelabel);
|
|
|
|
error = mac_biba_valid(source);
|
|
if (error)
|
|
return (error);
|
|
|
|
if ((source->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE)
|
|
return (EINVAL);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_update_vnode_from_mount(struct vnode *vp, struct label *vnodelabel,
|
|
struct mount *mp, struct label *fslabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(fslabel);
|
|
dest = SLOT(vnodelabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
/*
|
|
* Labeling event operations: IPC object.
|
|
*/
|
|
static void
|
|
mac_biba_create_mbuf_from_socket(struct socket *so, struct label *socketlabel,
|
|
struct mbuf *m, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(socketlabel);
|
|
dest = SLOT(mbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_socket(struct ucred *cred, struct socket *socket,
|
|
struct label *socketlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(socketlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_single_to_range(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_pipe(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(pipelabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_socket_from_socket(struct socket *oldsocket,
|
|
struct label *oldsocketlabel, struct socket *newsocket,
|
|
struct label *newsocketlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(oldsocketlabel);
|
|
dest = SLOT(newsocketlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_relabel_socket(struct ucred *cred, struct socket *socket,
|
|
struct label *socketlabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(newlabel);
|
|
dest = SLOT(socketlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_relabel_pipe(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(newlabel);
|
|
dest = SLOT(pipelabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel,
|
|
struct socket *socket, struct label *socketpeerlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(mbuflabel);
|
|
dest = SLOT(socketpeerlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
/*
|
|
* Labeling event operations: network objects.
|
|
*/
|
|
static void
|
|
mac_biba_set_socket_peer_from_socket(struct socket *oldsocket,
|
|
struct label *oldsocketlabel, struct socket *newsocket,
|
|
struct label *newsocketpeerlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(oldsocketlabel);
|
|
dest = SLOT(newsocketpeerlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d,
|
|
struct label *bpflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred->cr_label);
|
|
dest = SLOT(bpflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel)
|
|
{
|
|
char tifname[IFNAMSIZ], ifname[IFNAMSIZ], *p, *q;
|
|
char tiflist[sizeof(trusted_interfaces)];
|
|
struct mac_biba *dest;
|
|
int len, grade;
|
|
|
|
dest = SLOT(ifnetlabel);
|
|
|
|
if (ifnet->if_type == IFT_LOOP) {
|
|
grade = MAC_BIBA_TYPE_EQUAL;
|
|
goto set;
|
|
}
|
|
|
|
if (trust_all_interfaces) {
|
|
grade = MAC_BIBA_TYPE_HIGH;
|
|
goto set;
|
|
}
|
|
|
|
grade = MAC_BIBA_TYPE_LOW;
|
|
|
|
if (trusted_interfaces[0] == '\0' ||
|
|
!strvalid(trusted_interfaces, sizeof(trusted_interfaces)))
|
|
goto set;
|
|
|
|
for (p = trusted_interfaces, q = tiflist; *p != '\0'; p++, q++)
|
|
if(*p != ' ' && *p != '\t')
|
|
*q = *p;
|
|
|
|
snprintf(ifname, IFNAMSIZ, "%s%d", ifnet->if_name, ifnet->if_unit);
|
|
|
|
for (p = q = tiflist;; p++) {
|
|
if (*p == ',' || *p == '\0') {
|
|
len = p - q;
|
|
if (len < IFNAMSIZ) {
|
|
bzero(tifname, sizeof(tifname));
|
|
bcopy(q, tifname, len);
|
|
if (strcmp(tifname, ifname) == 0) {
|
|
grade = MAC_BIBA_TYPE_HIGH;
|
|
break;
|
|
}
|
|
}
|
|
if (*p == '\0')
|
|
break;
|
|
q = p + 1;
|
|
}
|
|
}
|
|
set:
|
|
mac_biba_set_single(dest, grade, 0);
|
|
mac_biba_set_range(dest, grade, 0, grade, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_ipq(struct mbuf *fragment, struct label *fragmentlabel,
|
|
struct ipq *ipq, struct label *ipqlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(fragmentlabel);
|
|
dest = SLOT(ipqlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel,
|
|
struct mbuf *datagram, struct label *datagramlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(ipqlabel);
|
|
dest = SLOT(datagramlabel);
|
|
|
|
/* Just use the head, since we require them all to match. */
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_fragment(struct mbuf *datagram, struct label *datagramlabel,
|
|
struct mbuf *fragment, struct label *fragmentlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(datagramlabel);
|
|
dest = SLOT(fragmentlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_from_mbuf(struct mbuf *oldmbuf,
|
|
struct label *oldmbuflabel, struct mbuf *newmbuf,
|
|
struct label *newmbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(oldmbuflabel);
|
|
dest = SLOT(newmbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel,
|
|
struct mbuf *mbuf, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *dest;
|
|
|
|
dest = SLOT(mbuflabel);
|
|
|
|
mac_biba_set_single(dest, MAC_BIBA_TYPE_EQUAL, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel,
|
|
struct mbuf *mbuf, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(bpflabel);
|
|
dest = SLOT(mbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel,
|
|
struct mbuf *m, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(ifnetlabel);
|
|
dest = SLOT(mbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_multicast_encap(struct mbuf *oldmbuf,
|
|
struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel,
|
|
struct mbuf *newmbuf, struct label *newmbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(oldmbuflabel);
|
|
dest = SLOT(newmbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_mbuf_netlayer(struct mbuf *oldmbuf, struct label *oldmbuflabel,
|
|
struct mbuf *newmbuf, struct label *newmbuflabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(oldmbuflabel);
|
|
dest = SLOT(newmbuflabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
}
|
|
|
|
static int
|
|
mac_biba_fragment_match(struct mbuf *fragment, struct label *fragmentlabel,
|
|
struct ipq *ipq, struct label *ipqlabel)
|
|
{
|
|
struct mac_biba *a, *b;
|
|
|
|
a = SLOT(ipqlabel);
|
|
b = SLOT(fragmentlabel);
|
|
|
|
return (mac_biba_equal_single(a, b));
|
|
}
|
|
|
|
static void
|
|
mac_biba_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet,
|
|
struct label *ifnetlabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(newlabel);
|
|
dest = SLOT(ifnetlabel);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_update_ipq(struct mbuf *fragment, struct label *fragmentlabel,
|
|
struct ipq *ipq, struct label *ipqlabel)
|
|
{
|
|
|
|
/* NOOP: we only accept matching labels, so no need to update */
|
|
}
|
|
|
|
/*
|
|
* Labeling event operations: processes.
|
|
*/
|
|
static void
|
|
mac_biba_create_cred(struct ucred *cred_parent, struct ucred *cred_child)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&cred_parent->cr_label);
|
|
dest = SLOT(&cred_child->cr_label);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
static void
|
|
mac_biba_execve_transition(struct ucred *old, struct ucred *new,
|
|
struct vnode *vp, struct mac *vnodelabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(&old->cr_label);
|
|
dest = SLOT(&new->cr_label);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
static int
|
|
mac_biba_execve_will_transition(struct ucred *old, struct vnode *vp,
|
|
struct mac *vnodelabel)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_proc0(struct ucred *cred)
|
|
{
|
|
struct mac_biba *dest;
|
|
|
|
dest = SLOT(&cred->cr_label);
|
|
|
|
mac_biba_set_single(dest, MAC_BIBA_TYPE_EQUAL, 0);
|
|
mac_biba_set_range(dest, MAC_BIBA_TYPE_LOW, 0, MAC_BIBA_TYPE_HIGH, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_create_proc1(struct ucred *cred)
|
|
{
|
|
struct mac_biba *dest;
|
|
|
|
dest = SLOT(&cred->cr_label);
|
|
|
|
mac_biba_set_single(dest, MAC_BIBA_TYPE_HIGH, 0);
|
|
mac_biba_set_range(dest, MAC_BIBA_TYPE_LOW, 0, MAC_BIBA_TYPE_HIGH, 0);
|
|
}
|
|
|
|
static void
|
|
mac_biba_relabel_cred(struct ucred *cred, struct label *newlabel)
|
|
{
|
|
struct mac_biba *source, *dest;
|
|
|
|
source = SLOT(newlabel);
|
|
dest = SLOT(&cred->cr_label);
|
|
|
|
mac_biba_copy_single(source, dest);
|
|
mac_biba_copy_range(source, dest);
|
|
}
|
|
|
|
/*
|
|
* Access control checks.
|
|
*/
|
|
static int
|
|
mac_biba_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel,
|
|
struct ifnet *ifnet, struct label *ifnetlabel)
|
|
{
|
|
struct mac_biba *a, *b;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
a = SLOT(bpflabel);
|
|
b = SLOT(ifnetlabel);
|
|
|
|
if (mac_biba_equal_single(a, b))
|
|
return (0);
|
|
return (EACCES);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_cred_relabel(struct ucred *cred, struct label *newlabel)
|
|
{
|
|
struct mac_biba *subj, *new;
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
new = SLOT(newlabel);
|
|
|
|
if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAGS_BOTH)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* XXX: Allow processes with root privilege to set labels outside
|
|
* their range, so suid things like "su" work. This WILL go away
|
|
* when we figure out the 'correct' solution...
|
|
*/
|
|
if (!suser_cred(cred, 0))
|
|
return (0);
|
|
|
|
/*
|
|
* The new single must be in the old range.
|
|
*/
|
|
if (!mac_biba_single_in_range(new, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* The new range must be in the old range.
|
|
*/
|
|
if (!mac_biba_range_in_range(new, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* XXX: Don't permit EQUAL in a label unless the subject has EQUAL.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_cred_visible(struct ucred *u1, struct ucred *u2)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&u1->cr_label);
|
|
obj = SLOT(&u2->cr_label);
|
|
|
|
/* XXX: range */
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (ESRCH);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet,
|
|
struct label *ifnetlabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *subj, *new;
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
new = SLOT(newlabel);
|
|
|
|
if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAGS_BOTH)
|
|
return (EINVAL);
|
|
|
|
return (suser_cred(cred, 0));
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel,
|
|
struct mbuf *m, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *p, *i;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
p = SLOT(mbuflabel);
|
|
i = SLOT(ifnetlabel);
|
|
|
|
return (mac_biba_single_in_range(p, i) ? 0 : EACCES);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_mount_stat(struct ucred *cred, struct mount *mp,
|
|
struct label *mntlabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(mntlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data)
|
|
{
|
|
|
|
if(!mac_biba_enabled)
|
|
return (0);
|
|
|
|
/* XXX: This will be implemented soon... */
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_poll(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT((pipelabel));
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_read(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT((pipelabel));
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_relabel(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *subj, *obj, *new;
|
|
|
|
new = SLOT(newlabel);
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(pipelabel);
|
|
|
|
if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* To relabel a pipe, the old pipe label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(obj, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* To relabel a pipe, the new pipe label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(new, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* XXX: Don't permit EQUAL in a label unless the subject has EQUAL.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_stat(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT((pipelabel));
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_pipe_write(struct ucred *cred, struct pipe *pipe,
|
|
struct label *pipelabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT((pipelabel));
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_proc_debug(struct ucred *cred, struct proc *proc)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(&proc->p_ucred->cr_label);
|
|
|
|
/* XXX: range checks */
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (ESRCH);
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_proc_sched(struct ucred *cred, struct proc *proc)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(&proc->p_ucred->cr_label);
|
|
|
|
/* XXX: range checks */
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (ESRCH);
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_proc_signal(struct ucred *cred, struct proc *proc, int signum)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(&proc->p_ucred->cr_label);
|
|
|
|
/* XXX: range checks */
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (ESRCH);
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_socket_deliver(struct socket *so, struct label *socketlabel,
|
|
struct mbuf *m, struct label *mbuflabel)
|
|
{
|
|
struct mac_biba *p, *s;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
p = SLOT(mbuflabel);
|
|
s = SLOT(socketlabel);
|
|
|
|
return (mac_biba_equal_single(p, s) ? 0 : EACCES);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_socket_relabel(struct ucred *cred, struct socket *socket,
|
|
struct label *socketlabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *subj, *obj, *new;
|
|
|
|
new = SLOT(newlabel);
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(socketlabel);
|
|
|
|
if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* To relabel a socket, the old socket label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(obj, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* To relabel a socket, the new socket label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(new, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* XXX: Don't permit EQUAL in a label unless the subject has EQUAL.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_socket_visible(struct ucred *cred, struct socket *socket,
|
|
struct label *socketlabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(socketlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (ENOENT);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_access(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, mode_t flags)
|
|
{
|
|
|
|
return (mac_biba_check_vnode_open(cred, vp, label, flags));
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_create(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct componentname *cnp, struct vattr *vap)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label,
|
|
struct componentname *cnp)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_exec(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, int attrnamespace, const char *name, struct uio *uio)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct componentname *cnp)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_open(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, mode_t acc_mode)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
/* XXX privilege override for admin? */
|
|
if (acc_mode & (VREAD | VEXEC | VSTAT)) {
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
}
|
|
if (acc_mode & (VWRITE | VAPPEND | VADMIN)) {
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp, struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled || !mac_biba_revocation_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&active_cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp, struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled || !mac_biba_revocation_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&active_cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_readdir(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_readlink(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_relabel(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, struct label *newlabel)
|
|
{
|
|
struct mac_biba *old, *new, *subj;
|
|
|
|
old = SLOT(vnodelabel);
|
|
new = SLOT(newlabel);
|
|
subj = SLOT(&cred->cr_label);
|
|
|
|
if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* To relabel a vnode, the old vnode label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(old, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* To relabel a vnode, the new vnode label must be in the subject
|
|
* range.
|
|
*/
|
|
if (!mac_biba_single_in_range(new, subj))
|
|
return (EPERM);
|
|
|
|
/*
|
|
* XXX: Don't permit EQUAL in a label unless the subject has EQUAL.
|
|
*/
|
|
|
|
return (suser_cred(cred, 0));
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label,
|
|
struct componentname *cnp)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
|
|
struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
|
|
struct componentname *cnp)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(dlabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
if (vp != NULL) {
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
|
|
struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setacl(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, acl_type_t type, struct acl *acl)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, int attrnamespace, const char *name,
|
|
struct uio *uio)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
/* XXX: protect the MAC EA in a special way? */
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, u_long flags)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, mode_t mode)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, uid_t uid, gid_t gid)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
|
|
struct label *vnodelabel, struct timespec atime, struct timespec mtime)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp, struct label *vnodelabel)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&active_cred->cr_label);
|
|
obj = SLOT(vnodelabel);
|
|
|
|
if (!mac_biba_dominate_single(obj, subj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mac_biba_check_vnode_write(struct ucred *active_cred,
|
|
struct ucred *file_cred, struct vnode *vp, struct label *label)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
|
|
if (!mac_biba_enabled || !mac_biba_revocation_enabled)
|
|
return (0);
|
|
|
|
subj = SLOT(&active_cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (!mac_biba_dominate_single(subj, obj))
|
|
return (EACCES);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static vm_prot_t
|
|
mac_biba_check_vnode_mmap_perms(struct ucred *cred, struct vnode *vp,
|
|
struct label *label, int newmapping)
|
|
{
|
|
struct mac_biba *subj, *obj;
|
|
vm_prot_t prot = 0;
|
|
|
|
if (!mac_biba_enabled || (!mac_biba_revocation_enabled && !newmapping))
|
|
return (VM_PROT_ALL);
|
|
|
|
subj = SLOT(&cred->cr_label);
|
|
obj = SLOT(label);
|
|
|
|
if (mac_biba_dominate_single(obj, subj))
|
|
prot |= VM_PROT_READ | VM_PROT_EXECUTE;
|
|
if (mac_biba_dominate_single(subj, obj))
|
|
prot |= VM_PROT_WRITE;
|
|
return (prot);
|
|
}
|
|
|
|
static struct mac_policy_op_entry mac_biba_ops[] =
|
|
{
|
|
{ MAC_DESTROY,
|
|
(macop_t)mac_biba_destroy },
|
|
{ MAC_INIT,
|
|
(macop_t)mac_biba_init },
|
|
{ MAC_INIT_BPFDESC_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_CRED_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_DEVFSDIRENT_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_IFNET_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_IPQ_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_MBUF_LABEL,
|
|
(macop_t)mac_biba_init_label_waitcheck },
|
|
{ MAC_INIT_MOUNT_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_MOUNT_FS_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_PIPE_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_SOCKET_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_SOCKET_PEER_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_TEMP_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_INIT_VNODE_LABEL,
|
|
(macop_t)mac_biba_init_label },
|
|
{ MAC_DESTROY_BPFDESC_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_CRED_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_DEVFSDIRENT_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_IFNET_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_IPQ_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_MBUF_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_MOUNT_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_MOUNT_FS_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_PIPE_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_SOCKET_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_SOCKET_PEER_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_TEMP_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_DESTROY_VNODE_LABEL,
|
|
(macop_t)mac_biba_destroy_label },
|
|
{ MAC_EXTERNALIZE,
|
|
(macop_t)mac_biba_externalize },
|
|
{ MAC_INTERNALIZE,
|
|
(macop_t)mac_biba_internalize },
|
|
{ MAC_CREATE_DEVFS_DEVICE,
|
|
(macop_t)mac_biba_create_devfs_device },
|
|
{ MAC_CREATE_DEVFS_DIRECTORY,
|
|
(macop_t)mac_biba_create_devfs_directory },
|
|
{ MAC_CREATE_DEVFS_VNODE,
|
|
(macop_t)mac_biba_create_devfs_vnode },
|
|
{ MAC_CREATE_VNODE,
|
|
(macop_t)mac_biba_create_vnode },
|
|
{ MAC_CREATE_MOUNT,
|
|
(macop_t)mac_biba_create_mount },
|
|
{ MAC_CREATE_ROOT_MOUNT,
|
|
(macop_t)mac_biba_create_root_mount },
|
|
{ MAC_RELABEL_VNODE,
|
|
(macop_t)mac_biba_relabel_vnode },
|
|
{ MAC_UPDATE_DEVFSDIRENT,
|
|
(macop_t)mac_biba_update_devfsdirent },
|
|
{ MAC_UPDATE_PROCFSVNODE,
|
|
(macop_t)mac_biba_update_procfsvnode },
|
|
{ MAC_UPDATE_VNODE_FROM_EXTERNALIZED,
|
|
(macop_t)mac_biba_update_vnode_from_externalized },
|
|
{ MAC_UPDATE_VNODE_FROM_MOUNT,
|
|
(macop_t)mac_biba_update_vnode_from_mount },
|
|
{ MAC_CREATE_MBUF_FROM_SOCKET,
|
|
(macop_t)mac_biba_create_mbuf_from_socket },
|
|
{ MAC_CREATE_PIPE,
|
|
(macop_t)mac_biba_create_pipe },
|
|
{ MAC_CREATE_SOCKET,
|
|
(macop_t)mac_biba_create_socket },
|
|
{ MAC_CREATE_SOCKET_FROM_SOCKET,
|
|
(macop_t)mac_biba_create_socket_from_socket },
|
|
{ MAC_RELABEL_PIPE,
|
|
(macop_t)mac_biba_relabel_pipe },
|
|
{ MAC_RELABEL_SOCKET,
|
|
(macop_t)mac_biba_relabel_socket },
|
|
{ MAC_SET_SOCKET_PEER_FROM_MBUF,
|
|
(macop_t)mac_biba_set_socket_peer_from_mbuf },
|
|
{ MAC_SET_SOCKET_PEER_FROM_SOCKET,
|
|
(macop_t)mac_biba_set_socket_peer_from_socket },
|
|
{ MAC_CREATE_BPFDESC,
|
|
(macop_t)mac_biba_create_bpfdesc },
|
|
{ MAC_CREATE_DATAGRAM_FROM_IPQ,
|
|
(macop_t)mac_biba_create_datagram_from_ipq },
|
|
{ MAC_CREATE_FRAGMENT,
|
|
(macop_t)mac_biba_create_fragment },
|
|
{ MAC_CREATE_IFNET,
|
|
(macop_t)mac_biba_create_ifnet },
|
|
{ MAC_CREATE_IPQ,
|
|
(macop_t)mac_biba_create_ipq },
|
|
{ MAC_CREATE_MBUF_FROM_MBUF,
|
|
(macop_t)mac_biba_create_mbuf_from_mbuf },
|
|
{ MAC_CREATE_MBUF_LINKLAYER,
|
|
(macop_t)mac_biba_create_mbuf_linklayer },
|
|
{ MAC_CREATE_MBUF_FROM_BPFDESC,
|
|
(macop_t)mac_biba_create_mbuf_from_bpfdesc },
|
|
{ MAC_CREATE_MBUF_FROM_IFNET,
|
|
(macop_t)mac_biba_create_mbuf_from_ifnet },
|
|
{ MAC_CREATE_MBUF_MULTICAST_ENCAP,
|
|
(macop_t)mac_biba_create_mbuf_multicast_encap },
|
|
{ MAC_CREATE_MBUF_NETLAYER,
|
|
(macop_t)mac_biba_create_mbuf_netlayer },
|
|
{ MAC_FRAGMENT_MATCH,
|
|
(macop_t)mac_biba_fragment_match },
|
|
{ MAC_RELABEL_IFNET,
|
|
(macop_t)mac_biba_relabel_ifnet },
|
|
{ MAC_UPDATE_IPQ,
|
|
(macop_t)mac_biba_update_ipq },
|
|
{ MAC_CREATE_CRED,
|
|
(macop_t)mac_biba_create_cred },
|
|
{ MAC_EXECVE_TRANSITION,
|
|
(macop_t)mac_biba_execve_transition },
|
|
{ MAC_EXECVE_WILL_TRANSITION,
|
|
(macop_t)mac_biba_execve_will_transition },
|
|
{ MAC_CREATE_PROC0,
|
|
(macop_t)mac_biba_create_proc0 },
|
|
{ MAC_CREATE_PROC1,
|
|
(macop_t)mac_biba_create_proc1 },
|
|
{ MAC_RELABEL_CRED,
|
|
(macop_t)mac_biba_relabel_cred },
|
|
{ MAC_CHECK_BPFDESC_RECEIVE,
|
|
(macop_t)mac_biba_check_bpfdesc_receive },
|
|
{ MAC_CHECK_CRED_RELABEL,
|
|
(macop_t)mac_biba_check_cred_relabel },
|
|
{ MAC_CHECK_CRED_VISIBLE,
|
|
(macop_t)mac_biba_check_cred_visible },
|
|
{ MAC_CHECK_IFNET_RELABEL,
|
|
(macop_t)mac_biba_check_ifnet_relabel },
|
|
{ MAC_CHECK_IFNET_TRANSMIT,
|
|
(macop_t)mac_biba_check_ifnet_transmit },
|
|
{ MAC_CHECK_MOUNT_STAT,
|
|
(macop_t)mac_biba_check_mount_stat },
|
|
{ MAC_CHECK_PIPE_IOCTL,
|
|
(macop_t)mac_biba_check_pipe_ioctl },
|
|
{ MAC_CHECK_PIPE_POLL,
|
|
(macop_t)mac_biba_check_pipe_poll },
|
|
{ MAC_CHECK_PIPE_READ,
|
|
(macop_t)mac_biba_check_pipe_read },
|
|
{ MAC_CHECK_PIPE_RELABEL,
|
|
(macop_t)mac_biba_check_pipe_relabel },
|
|
{ MAC_CHECK_PIPE_STAT,
|
|
(macop_t)mac_biba_check_pipe_stat },
|
|
{ MAC_CHECK_PIPE_WRITE,
|
|
(macop_t)mac_biba_check_pipe_write },
|
|
{ MAC_CHECK_PROC_DEBUG,
|
|
(macop_t)mac_biba_check_proc_debug },
|
|
{ MAC_CHECK_PROC_SCHED,
|
|
(macop_t)mac_biba_check_proc_sched },
|
|
{ MAC_CHECK_PROC_SIGNAL,
|
|
(macop_t)mac_biba_check_proc_signal },
|
|
{ MAC_CHECK_SOCKET_DELIVER,
|
|
(macop_t)mac_biba_check_socket_deliver },
|
|
{ MAC_CHECK_SOCKET_RELABEL,
|
|
(macop_t)mac_biba_check_socket_relabel },
|
|
{ MAC_CHECK_SOCKET_VISIBLE,
|
|
(macop_t)mac_biba_check_socket_visible },
|
|
{ MAC_CHECK_VNODE_ACCESS,
|
|
(macop_t)mac_biba_check_vnode_access },
|
|
{ MAC_CHECK_VNODE_CHDIR,
|
|
(macop_t)mac_biba_check_vnode_chdir },
|
|
{ MAC_CHECK_VNODE_CHROOT,
|
|
(macop_t)mac_biba_check_vnode_chroot },
|
|
{ MAC_CHECK_VNODE_CREATE,
|
|
(macop_t)mac_biba_check_vnode_create },
|
|
{ MAC_CHECK_VNODE_DELETE,
|
|
(macop_t)mac_biba_check_vnode_delete },
|
|
{ MAC_CHECK_VNODE_DELETEACL,
|
|
(macop_t)mac_biba_check_vnode_deleteacl },
|
|
{ MAC_CHECK_VNODE_EXEC,
|
|
(macop_t)mac_biba_check_vnode_exec },
|
|
{ MAC_CHECK_VNODE_GETACL,
|
|
(macop_t)mac_biba_check_vnode_getacl },
|
|
{ MAC_CHECK_VNODE_GETEXTATTR,
|
|
(macop_t)mac_biba_check_vnode_getextattr },
|
|
{ MAC_CHECK_VNODE_LOOKUP,
|
|
(macop_t)mac_biba_check_vnode_lookup },
|
|
{ MAC_CHECK_VNODE_OPEN,
|
|
(macop_t)mac_biba_check_vnode_open },
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|
{ MAC_CHECK_VNODE_POLL,
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|
(macop_t)mac_biba_check_vnode_poll },
|
|
{ MAC_CHECK_VNODE_READ,
|
|
(macop_t)mac_biba_check_vnode_read },
|
|
{ MAC_CHECK_VNODE_READDIR,
|
|
(macop_t)mac_biba_check_vnode_readdir },
|
|
{ MAC_CHECK_VNODE_READLINK,
|
|
(macop_t)mac_biba_check_vnode_readlink },
|
|
{ MAC_CHECK_VNODE_RELABEL,
|
|
(macop_t)mac_biba_check_vnode_relabel },
|
|
{ MAC_CHECK_VNODE_RENAME_FROM,
|
|
(macop_t)mac_biba_check_vnode_rename_from },
|
|
{ MAC_CHECK_VNODE_RENAME_TO,
|
|
(macop_t)mac_biba_check_vnode_rename_to },
|
|
{ MAC_CHECK_VNODE_REVOKE,
|
|
(macop_t)mac_biba_check_vnode_revoke },
|
|
{ MAC_CHECK_VNODE_SETACL,
|
|
(macop_t)mac_biba_check_vnode_setacl },
|
|
{ MAC_CHECK_VNODE_SETEXTATTR,
|
|
(macop_t)mac_biba_check_vnode_setextattr },
|
|
{ MAC_CHECK_VNODE_SETFLAGS,
|
|
(macop_t)mac_biba_check_vnode_setflags },
|
|
{ MAC_CHECK_VNODE_SETMODE,
|
|
(macop_t)mac_biba_check_vnode_setmode },
|
|
{ MAC_CHECK_VNODE_SETOWNER,
|
|
(macop_t)mac_biba_check_vnode_setowner },
|
|
{ MAC_CHECK_VNODE_SETUTIMES,
|
|
(macop_t)mac_biba_check_vnode_setutimes },
|
|
{ MAC_CHECK_VNODE_STAT,
|
|
(macop_t)mac_biba_check_vnode_stat },
|
|
{ MAC_CHECK_VNODE_WRITE,
|
|
(macop_t)mac_biba_check_vnode_write },
|
|
{ MAC_CHECK_VNODE_MMAP_PERMS,
|
|
(macop_t)mac_biba_check_vnode_mmap_perms },
|
|
{ MAC_OP_LAST, NULL }
|
|
};
|
|
|
|
MAC_POLICY_SET(mac_biba_ops, trustedbsd_mac_biba, "TrustedBSD MAC/Biba",
|
|
MPC_LOADTIME_FLAG_NOTLATE, &mac_biba_slot);
|