mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
6356dba0b4
(1) Abstract interpreter vnode labeling in execve(2) and mac_execve(2) so that the general exec code isn't aware of the details of allocating, copying, and freeing labels, rather, simply passes in a void pointer to start and stop functions that will be used by the framework. This change will be MFC'd. (2) Introduce a new flags field to the MAC_POLICY_SET(9) interface allowing policies to declare which types of objects require label allocation, initialization, and destruction, and define a set of flags covering various supported object types (MPC_OBJECT_PROC, MPC_OBJECT_VNODE, MPC_OBJECT_INPCB, ...). This change reduces the overhead of compiling the MAC Framework into the kernel if policies aren't loaded, or if policies require labels on only a small number or even no object types. Each time a policy is loaded or unloaded, we recalculate a mask of labeled object types across all policies present in the system. Eliminate MAC_ALWAYS_LABEL_MBUF option as it is no longer required. MFC after: 1 week ((1) only) Reviewed by: csjp Obtained from: TrustedBSD Project Sponsored by: Apple, Inc.
165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 2003-2006 SPARTA, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed for the FreeBSD Project in part by Network
|
|
* Associates Laboratories, the Security Research Division of Network
|
|
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
|
|
* as part of the DARPA CHATS research program.
|
|
*
|
|
* This software was enhanced by SPARTA ISSO under SPAWAR contract
|
|
* N66001-04-C-6019 ("SEFOS").
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_mac.h"
|
|
#include "opt_posix.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/ksem.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <security/mac/mac_framework.h>
|
|
#include <security/mac/mac_internal.h>
|
|
#include <security/mac/mac_policy.h>
|
|
|
|
static struct label *
|
|
mac_posixsem_label_alloc(void)
|
|
{
|
|
struct label *label;
|
|
|
|
label = mac_labelzone_alloc(M_WAITOK);
|
|
MAC_PERFORM(posixsem_init_label, label);
|
|
return (label);
|
|
}
|
|
|
|
void
|
|
mac_posixsem_init(struct ksem *ks)
|
|
{
|
|
|
|
if (mac_labeled & MPC_OBJECT_POSIXSEM)
|
|
ks->ks_label = mac_posixsem_label_alloc();
|
|
else
|
|
ks->ks_label = NULL;
|
|
}
|
|
|
|
static void
|
|
mac_posixsem_label_free(struct label *label)
|
|
{
|
|
|
|
MAC_PERFORM(posixsem_destroy_label, label);
|
|
mac_labelzone_free(label);
|
|
}
|
|
|
|
void
|
|
mac_posixsem_destroy(struct ksem *ks)
|
|
{
|
|
|
|
if (ks->ks_label != NULL) {
|
|
mac_posixsem_label_free(ks->ks_label);
|
|
ks->ks_label = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
mac_posixsem_create(struct ucred *cred, struct ksem *ks)
|
|
{
|
|
|
|
MAC_PERFORM(posixsem_create, cred, ks, ks->ks_label);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_open(struct ucred *cred, struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_open, cred, ks, ks->ks_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_getvalue(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_getvalue, active_cred, file_cred, ks,
|
|
ks->ks_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_post(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_post, active_cred, file_cred, ks,
|
|
ks->ks_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_stat(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_stat, active_cred, file_cred, ks,
|
|
ks->ks_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_unlink(struct ucred *cred, struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_unlink, cred, ks, ks->ks_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mac_posixsem_check_wait(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct ksem *ks)
|
|
{
|
|
int error;
|
|
|
|
MAC_CHECK(posixsem_check_wait, active_cred, file_cred, ks,
|
|
ks->ks_label);
|
|
|
|
return (error);
|
|
}
|