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freebsd-dev/sys/security/mac_none/mac_none.c

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Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
/*-
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
License and wording updates: NAI has authorized the removal of clause three from their BSD-style license. Also, s/NAI Labs/Network Associates Laboratories/.
2002-11-04 01:53:12 +00:00
* 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.
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
*
* 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.
*
* $FreeBSD$
*/
/*
* Developed by the TrustedBSD Project.
* Generic mandatory access module that does nothing.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/acl.h>
#include <sys/conf.h>
Slightly change the semantics of vnode labels for MAC: rather than "refreshing" the label on the vnode before use, just get the label right from inception. For single-label file systems, set the label in the generic VFS getnewvnode() code; for multi-label file systems, leave the labeling up to the file system. With UFS1/2, this means reading the extended attribute during vfs_vget() as the inode is pulled off disk, rather than hitting the extended attributes frequently during operations later, improving performance. This also corrects sematics for shared vnode locks, which were not previously present in the system. This chances the cache coherrency properties WRT out-of-band access to label data, but in an acceptable form. With UFS1, there is a small race condition during automatic extended attribute start -- this is not present with UFS2, and occurs because EAs aren't available at vnode inception. We'll introduce a work around for this shortly. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-26 14:38:24 +00:00
#include <sys/extattr.h>
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
#include <sys/kernel.h>
#include <sys/mac.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/sysent.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/pipe.h>
#include <sys/sysctl.h>
#include <fs/devfs/devfs.h>
#include <net/bpfdesc.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <vm/vm.h>
#include <sys/mac_policy.h>
SYSCTL_DECL(_security_mac);
SYSCTL_NODE(_security_mac, OID_AUTO, none, CTLFLAG_RW, 0,
"TrustedBSD mac_none policy controls");
static int mac_none_enabled = 0;
SYSCTL_INT(_security_mac_none, OID_AUTO, enabled, CTLFLAG_RW,
&mac_none_enabled, 0, "Enforce none policy");
/*
* Policy module operations.
*/
static void
mac_none_destroy(struct mac_policy_conf *conf)
{
}
static void
mac_none_init(struct mac_policy_conf *conf)
{
}
Provide stub mpo_syscall() implementations for mac_none and mac_test. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-20 02:53:35 +00:00
static int
mac_none_syscall(struct thread *td, int call, void *arg)
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
/*
* Label operations.
*/
static void
Begin another merge from the TrustedBSD MAC branch: - 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
2002-10-05 15:10:00 +00:00
mac_none_init_label(struct label *label)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
static int
Begin another merge from the TrustedBSD MAC branch: - 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
2002-10-05 15:10:00 +00:00
mac_none_init_label_waitcheck(struct label *label, int flag)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static void
Begin another merge from the TrustedBSD MAC branch: - 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
2002-10-05 15:10:00 +00:00
mac_none_destroy_label(struct label *label)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
static int
Adapt MAC policies for the new user API changes; teach policies how to parse their own label elements (some cleanup to occur here in the future to use the newly added kernel strsep()). Policies now entirely encapsulate their notion of label in the policy module. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-22 14:31:34 +00:00
mac_none_externalize_label(struct label *label, char *element_name,
char *element_data, size_t size, size_t *len, int *claimed)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
Adapt MAC policies for the new user API changes; teach policies how to parse their own label elements (some cleanup to occur here in the future to use the newly added kernel strsep()). Policies now entirely encapsulate their notion of label in the policy module. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-22 14:31:34 +00:00
static int
mac_none_internalize_label(struct label *label, char *element_name,
char *element_data, int *claimed)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
/*
* Labeling event operations: file system objects, and things that look
* a lot like file system objects.
*/
Slightly change the semantics of vnode labels for MAC: rather than "refreshing" the label on the vnode before use, just get the label right from inception. For single-label file systems, set the label in the generic VFS getnewvnode() code; for multi-label file systems, leave the labeling up to the file system. With UFS1/2, this means reading the extended attribute during vfs_vget() as the inode is pulled off disk, rather than hitting the extended attributes frequently during operations later, improving performance. This also corrects sematics for shared vnode locks, which were not previously present in the system. This chances the cache coherrency properties WRT out-of-band access to label data, but in an acceptable form. With UFS1, there is a small race condition during automatic extended attribute start -- this is not present with UFS2, and occurs because EAs aren't available at vnode inception. We'll introduce a work around for this shortly. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-26 14:38:24 +00:00
static void
mac_none_associate_vnode_devfs(struct mount *mp, struct label *fslabel,
struct devfs_dirent *de, struct label *delabel, struct vnode *vp,
struct label *vlabel)
{
}
static int
mac_none_associate_vnode_extattr(struct mount *mp, struct label *fslabel,
struct vnode *vp, struct label *vlabel)
{
return (0);
}
static void
mac_none_associate_vnode_singlelabel(struct mount *mp,
struct label *fslabel, struct vnode *vp, struct label *vlabel)
{
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static void
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
mac_none_create_devfs_device(struct mount *mp, dev_t dev,
struct devfs_dirent *devfs_dirent, struct label *label)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
Implement mac_create_devfs_symlink() for policies that interact with vnode labels. Sync from MAC tree. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-05 18:56:25 +00:00
static void
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
mac_none_create_devfs_directory(struct mount *mp, char *dirname,
int dirnamelen, struct devfs_dirent *devfs_dirent, struct label *label)
Implement mac_create_devfs_symlink() for policies that interact with vnode labels. Sync from MAC tree. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-05 18:56:25 +00:00
{
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static void
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
mac_none_create_devfs_symlink(struct ucred *cred, struct mount *mp,
struct devfs_dirent *dd, struct label *ddlabel, struct devfs_dirent *de,
struct label *delabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
Slightly change the semantics of vnode labels for MAC: rather than "refreshing" the label on the vnode before use, just get the label right from inception. For single-label file systems, set the label in the generic VFS getnewvnode() code; for multi-label file systems, leave the labeling up to the file system. With UFS1/2, this means reading the extended attribute during vfs_vget() as the inode is pulled off disk, rather than hitting the extended attributes frequently during operations later, improving performance. This also corrects sematics for shared vnode locks, which were not previously present in the system. This chances the cache coherrency properties WRT out-of-band access to label data, but in an acceptable form. With UFS1, there is a small race condition during automatic extended attribute start -- this is not present with UFS2, and occurs because EAs aren't available at vnode inception. We'll introduce a work around for this shortly. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-26 14:38:24 +00:00
static int
mac_none_create_vnode_extattr(struct ucred *cred, struct mount *mp,
struct label *fslabel, struct vnode *dvp, struct label *dlabel,
struct vnode *vp, struct label *vlabel, struct componentname *cnp)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
Slightly change the semantics of vnode labels for MAC: rather than "refreshing" the label on the vnode before use, just get the label right from inception. For single-label file systems, set the label in the generic VFS getnewvnode() code; for multi-label file systems, leave the labeling up to the file system. With UFS1/2, this means reading the extended attribute during vfs_vget() as the inode is pulled off disk, rather than hitting the extended attributes frequently during operations later, improving performance. This also corrects sematics for shared vnode locks, which were not previously present in the system. This chances the cache coherrency properties WRT out-of-band access to label data, but in an acceptable form. With UFS1, there is a small race condition during automatic extended attribute start -- this is not present with UFS2, and occurs because EAs aren't available at vnode inception. We'll introduce a work around for this shortly. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-26 14:38:24 +00:00
return (0);
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
}
static void
mac_none_create_mount(struct ucred *cred, struct mount *mp,
struct label *mntlabel, struct label *fslabel)
{
}
static void
mac_none_create_root_mount(struct ucred *cred, struct mount *mp,
struct label *mntlabel, struct label *fslabel)
{
}
static void
mac_none_relabel_vnode(struct ucred *cred, struct vnode *vp,
struct label *vnodelabel, struct label *label)
{
}
static int
Slightly change the semantics of vnode labels for MAC: rather than "refreshing" the label on the vnode before use, just get the label right from inception. For single-label file systems, set the label in the generic VFS getnewvnode() code; for multi-label file systems, leave the labeling up to the file system. With UFS1/2, this means reading the extended attribute during vfs_vget() as the inode is pulled off disk, rather than hitting the extended attributes frequently during operations later, improving performance. This also corrects sematics for shared vnode locks, which were not previously present in the system. This chances the cache coherrency properties WRT out-of-band access to label data, but in an acceptable form. With UFS1, there is a small race condition during automatic extended attribute start -- this is not present with UFS2, and occurs because EAs aren't available at vnode inception. We'll introduce a work around for this shortly. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-26 14:38:24 +00:00
mac_none_setlabel_vnode_extattr(struct ucred *cred, struct vnode *vp,
struct label *vlabel, struct label *intlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static void
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
mac_none_update_devfsdirent(struct mount *mp,
struct devfs_dirent *devfs_dirent, struct label *direntlabel,
struct vnode *vp, struct label *vnodelabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
/*
* Labeling event operations: IPC object.
*/
static void
mac_none_create_mbuf_from_socket(struct socket *so, struct label *socketlabel,
struct mbuf *m, struct label *mbuflabel)
{
}
static void
mac_none_create_socket(struct ucred *cred, struct socket *socket,
struct label *socketlabel)
{
}
static void
mac_none_create_pipe(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel)
{
}
static void
mac_none_create_socket_from_socket(struct socket *oldsocket,
struct label *oldsocketlabel, struct socket *newsocket,
struct label *newsocketlabel)
{
}
static void
mac_none_relabel_socket(struct ucred *cred, struct socket *socket,
struct label *socketlabel, struct label *newlabel)
{
}
static void
mac_none_relabel_pipe(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel, struct label *newlabel)
{
}
static void
mac_none_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel,
struct socket *socket, struct label *socketpeerlabel)
{
}
static void
mac_none_set_socket_peer_from_socket(struct socket *oldsocket,
struct label *oldsocketlabel, struct socket *newsocket,
struct label *newsocketpeerlabel)
{
}
/*
* Labeling event operations: network objects.
*/
static void
mac_none_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d,
struct label *bpflabel)
{
}
static void
mac_none_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel,
struct mbuf *datagram, struct label *datagramlabel)
{
}
static void
mac_none_create_fragment(struct mbuf *datagram, struct label *datagramlabel,
struct mbuf *fragment, struct label *fragmentlabel)
{
}
static void
mac_none_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel)
{
}
static void
mac_none_create_ipq(struct mbuf *fragment, struct label *fragmentlabel,
struct ipq *ipq, struct label *ipqlabel)
{
}
static void
mac_none_create_mbuf_from_mbuf(struct mbuf *oldmbuf,
struct label *oldmbuflabel, struct mbuf *newmbuf,
struct label *newmbuflabel)
{
}
static void
mac_none_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel,
struct mbuf *mbuf, struct label *mbuflabel)
{
}
static void
mac_none_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel,
struct mbuf *mbuf, struct label *mbuflabel)
{
}
static void
mac_none_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel,
struct mbuf *m, struct label *mbuflabel)
{
}
static void
mac_none_create_mbuf_multicast_encap(struct mbuf *oldmbuf,
struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel,
struct mbuf *newmbuf, struct label *newmbuflabel)
{
}
static void
mac_none_create_mbuf_netlayer(struct mbuf *oldmbuf,
struct label *oldmbuflabel, struct mbuf *newmbuf, struct label *newmbuflabel)
{
}
static int
mac_none_fragment_match(struct mbuf *fragment, struct label *fragmentlabel,
struct ipq *ipq, struct label *ipqlabel)
{
return (1);
}
static void
mac_none_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet,
struct label *ifnetlabel, struct label *newlabel)
{
}
static void
mac_none_update_ipq(struct mbuf *fragment, struct label *fragmentlabel,
struct ipq *ipq, struct label *ipqlabel)
{
}
/*
* Labeling event operations: processes.
*/
static void
mac_none_create_cred(struct ucred *cred_parent, struct ucred *cred_child)
{
}
static void
mac_none_execve_transition(struct ucred *old, struct ucred *new,
Update policy modules for changes in arguments associated with support for label access on the interpreter, not just the shell script. No policies currently present in the system rely on the new labels.
2002-11-05 17:52:42 +00:00
struct vnode *vp, struct label *vnodelabel,
Update MAC modules for changes in arguments for exec MAC policy entry points to include an explicit execlabel. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-11-08 18:04:36 +00:00
struct label *interpvnodelabel, struct image_params *imgp,
struct label *execlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
}
static int
mac_none_execve_will_transition(struct ucred *old, struct vnode *vp,
Update policy modules for changes in arguments associated with support for label access on the interpreter, not just the shell script. No policies currently present in the system rely on the new labels.
2002-11-05 17:52:42 +00:00
struct label *vnodelabel, struct label *interpvnodelabel,
Update MAC modules for changes in arguments for exec MAC policy entry points to include an explicit execlabel. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-11-08 18:04:36 +00:00
struct image_params *imgp, struct label *execlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static void
mac_none_create_proc0(struct ucred *cred)
{
}
static void
mac_none_create_proc1(struct ucred *cred)
{
}
static void
mac_none_relabel_cred(struct ucred *cred, struct label *newlabel)
{
}
/*
* Access control checks.
*/
static int
mac_none_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel,
struct ifnet *ifnet, struct label *ifnet_label)
{
return (0);
}
static int
mac_none_check_cred_relabel(struct ucred *cred, struct label *newlabel)
{
return (0);
}
static int
mac_none_check_cred_visible(struct ucred *u1, struct ucred *u2)
{
return (0);
}
static int
mac_none_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet,
Various minor type, prototype tweaks -- clean up cruft due to lack of type checking on entry points (to be introduced shortly). Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-30 18:10:46 +00:00
struct label *ifnetlabel, struct label *newlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel,
struct mbuf *m, struct label *mbuflabel)
{
return (0);
}
static int
mac_none_check_mount_stat(struct ucred *cred, struct mount *mp,
struct label *mntlabel)
{
return (0);
}
static int
mac_none_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data)
{
return (0);
}
static int
Break out mac_check_pipe_op() into component check entry points: mac_check_pipe_poll(), mac_check_pipe_read(), mac_check_pipe_stat(), and mac_check_pipe_write(). This is improves consistency with other access control entry points and permits security modules to only control the object methods that they are interested in, avoiding switch statements. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:59:37 +00:00
mac_none_check_pipe_poll(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel)
{
return (0);
}
static int
mac_none_check_pipe_read(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none_check_pipe_relabel(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel, struct label *newlabel)
{
return (0);
}
Break out mac_check_pipe_op() into component check entry points: mac_check_pipe_poll(), mac_check_pipe_read(), mac_check_pipe_stat(), and mac_check_pipe_write(). This is improves consistency with other access control entry points and permits security modules to only control the object methods that they are interested in, avoiding switch statements. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:59:37 +00:00
static int
mac_none_check_pipe_stat(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel)
{
return (0);
}
static int
mac_none_check_pipe_write(struct ucred *cred, struct pipe *pipe,
struct label *pipelabel)
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static int
mac_none_check_proc_debug(struct ucred *cred, struct proc *proc)
{
return (0);
}
static int
mac_none_check_proc_sched(struct ucred *cred, struct proc *proc)
{
return (0);
}
static int
mac_none_check_proc_signal(struct ucred *cred, struct proc *proc, int signum)
{
return (0);
}
static int
mac_none_check_socket_bind(struct ucred *cred, struct socket *socket,
struct label *socketlabel, struct sockaddr *sockaddr)
{
return (0);
}
static int
mac_none_check_socket_connect(struct ucred *cred, struct socket *socket,
struct label *socketlabel, struct sockaddr *sockaddr)
{
return (0);
}
static int
Rename mac_check_socket_receive() to mac_check_socket_deliver() so that we can use the names _receive() and _send() for the receive() and send() checks. Rename related constants, policy implementations, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-15 18:51:27 +00:00
mac_none_check_socket_deliver(struct socket *so, struct label *socketlabel,
struct mbuf *m, struct label *mbuflabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none is a stub policy without any functional implementation. Various cleanups, no functional changes: - Fix a type in an entry point stub, socket checks accept sockets, not vnodes. - Trailing whitespace - Entry point sort order Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-21 23:16:23 +00:00
mac_none_check_socket_listen(struct ucred *cred, struct socket *so,
Rename mac_check_socket_receive() to mac_check_socket_deliver() so that we can use the names _receive() and _send() for the receive() and send() checks. Rename related constants, policy implementations, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-15 18:51:27 +00:00
struct label *socketlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none_check_socket_relabel(struct ucred *cred, struct socket *socket,
struct label *socketlabel, struct label *newlabel)
{
return (0);
}
static int
mac_none_check_socket_visible(struct ucred *cred, struct socket *socket,
struct label *socketlabel)
{
return (0);
}
Hook up no-op stubs for reboot, swapon, sysctl entry points. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-29 19:57:28 +00:00
static int
mac_none_check_system_reboot(struct ucred *cred, int how)
{
return (0);
}
static int
mac_none_check_system_swapon(struct ucred *cred, struct vnode *vp,
struct label *label)
{
return (0);
}
static int
mac_none_check_system_sysctl(struct ucred *cred, int *name, u_int namelen,
void *old, size_t *oldlenp, int inkernel, void *new, size_t newlen)
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static int
mac_none_check_vnode_access(struct ucred *cred, struct vnode *vp,
While 'mode_t' seemed like a good idea for the access mode argument for MAC access() and open() checks, the argument actually has an int type where it becomes available. Switch to using 'int' for the mode argument throughout the MAC Framework and policy modules. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-30 17:56:57 +00:00
struct label *label, int acc_mode)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
struct label *dlabel)
{
return (0);
}
static int
mac_none_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
struct label *dlabel)
{
return (0);
}
static int
mac_none_check_vnode_create(struct ucred *cred, struct vnode *dvp,
struct label *dlabel, struct componentname *cnp, struct vattr *vap)
{
return (0);
}
static int
mac_none_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
struct label *dlabel, struct vnode *vp, struct label *label,
struct componentname *cnp)
{
return (0);
}
static int
mac_none_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
struct label *label, acl_type_t type)
{
return (0);
}
static int
mac_none_check_vnode_exec(struct ucred *cred, struct vnode *vp,
Update MAC modules for changes in arguments for exec MAC policy entry points to include an explicit execlabel. Approved by: re Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-11-08 18:04:36 +00:00
struct label *label, struct image_params *imgp,
struct label *execlabel)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
static int
mac_none_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
struct label *label, acl_type_t type)
{
return (0);
}
static int
mac_none_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
struct label *label, int attrnamespace, const char *name, struct uio *uio)
{
return (0);
}
mac_none is a stub policy without any functional implementation. Various cleanups, no functional changes: - Fix a type in an entry point stub, socket checks accept sockets, not vnodes. - Trailing whitespace - Entry point sort order Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-21 23:16:23 +00:00
static int
Merge implementation of mpo_check_vnode_link() for various appropriate file-system aware MAC policies. Sync to MAC tree. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-05 18:25:48 +00:00
mac_none_check_vnode_link(struct ucred *cred, struct vnode *dvp,
struct label *dlabel, struct vnode *vp, struct label *label,
struct componentname *cnp)
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static int
mac_none is a stub policy without any functional implementation. Various cleanups, no functional changes: - Fix a type in an entry point stub, socket checks accept sockets, not vnodes. - Trailing whitespace - Entry point sort order Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-21 23:16:23 +00:00
mac_none_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
struct label *dlabel, struct componentname *cnp)
{
Sync from MAC tree: break out the single mmap entry point into seperate entry points for each occasion: mac_check_vnode_mmap() Check at initial mapping mac_check_vnode_mprotect() Check at mapping protection change mac_check_vnode_mmap_downgrade() Determine if a mapping downgrade should take place following subject relabel. Implement mmap() and mprotect() entry points for labeled vnode policies. These entry points are currently not hooked up to the VM system in the base tree. These changes improve the consistency of the access control interface and offer more flexibility regarding limiting access to vnode mmaping. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-06 02:46:26 +00:00
return (0);
}
static int
mac_none_check_vnode_mmap(struct ucred *cred, struct vnode *vp,
struct label *label, int prot)
{
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
return (0);
Sync from MAC tree: break out the single mmap entry point into seperate entry points for each occasion: mac_check_vnode_mmap() Check at initial mapping mac_check_vnode_mprotect() Check at mapping protection change mac_check_vnode_mmap_downgrade() Determine if a mapping downgrade should take place following subject relabel. Implement mmap() and mprotect() entry points for labeled vnode policies. These entry points are currently not hooked up to the VM system in the base tree. These changes improve the consistency of the access control interface and offer more flexibility regarding limiting access to vnode mmaping. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-06 02:46:26 +00:00
}
static int
mac_none_check_vnode_mprotect(struct ucred *cred, struct vnode *vp,
struct label *label, int prot)
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static int
mac_none_check_vnode_open(struct ucred *cred, struct vnode *vp,
While 'mode_t' seemed like a good idea for the access mode argument for MAC access() and open() checks, the argument actually has an int type where it becomes available. Switch to using 'int' for the mode argument throughout the MAC Framework and policy modules. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-30 17:56:57 +00:00
struct label *filelabel, int acc_mode)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
Break out mac_check_vnode_op() into three seperate checks: mac_check_vnode_poll(), mac_check_vnode_read(), mac_check_vnode_write(). This improves the consistency with other existing vnode checks, and allows policies to avoid implementing switch statements to determine what operations they do and do not want to authorize. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:43:25 +00:00
static int
Pass active_cred and file_cred into the MAC framework explicitly for mac_check_vnode_{poll,read,stat,write}(). Pass in fp->f_cred when calling these checks with a struct file available. Otherwise, pass NOCRED. All currently MAC policies use active_cred, but could now offer the cached credential semantic used for the base system security model. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 19:04:53 +00:00
mac_none_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *label)
Break out mac_check_vnode_op() into three seperate checks: mac_check_vnode_poll(), mac_check_vnode_read(), mac_check_vnode_write(). This improves the consistency with other existing vnode checks, and allows policies to avoid implementing switch statements to determine what operations they do and do not want to authorize. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:43:25 +00:00
{
return (0);
}
static int
Pass active_cred and file_cred into the MAC framework explicitly for mac_check_vnode_{poll,read,stat,write}(). Pass in fp->f_cred when calling these checks with a struct file available. Otherwise, pass NOCRED. All currently MAC policies use active_cred, but could now offer the cached credential semantic used for the base system security model. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 19:04:53 +00:00
mac_none_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *label)
Break out mac_check_vnode_op() into three seperate checks: mac_check_vnode_poll(), mac_check_vnode_read(), mac_check_vnode_write(). This improves the consistency with other existing vnode checks, and allows policies to avoid implementing switch statements to determine what operations they do and do not want to authorize. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:43:25 +00:00
{
return (0);
}
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
static int
mac_none_check_vnode_readdir(struct ucred *cred, struct vnode *vp,
struct label *dlabel)
{
return (0);
}
static int
mac_none_check_vnode_readlink(struct ucred *cred, struct vnode *vp,
struct label *vnodelabel)
{
return (0);
}
static int
mac_none_check_vnode_relabel(struct ucred *cred, struct vnode *vp,
struct label *vnodelabel, struct label *newlabel)
{
return (0);
}
static int
mac_none_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
struct label *dlabel, struct vnode *vp, struct label *label,
struct componentname *cnp)
{
return (0);
}
static int
mac_none_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
struct componentname *cnp)
{
return (0);
}
static int
mac_none_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
struct label *label)
{
return (0);
}
static int
mac_none_check_vnode_setacl(struct ucred *cred, struct vnode *vp,
struct label *label, acl_type_t type, struct acl *acl)
{
return (0);
}
static int
mac_none_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
struct label *label, int attrnamespace, const char *name, struct uio *uio)
{
return (0);
}
static int
mac_none_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
struct label *label, u_long flags)
{
return (0);
}
static int
mac_none_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
struct label *label, mode_t mode)
{
return (0);
}
static int
mac_none_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
struct label *label, uid_t uid, gid_t gid)
{
return (0);
}
static int
mac_none_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
struct label *label, struct timespec atime, struct timespec mtime)
{
return (0);
}
static int
Pass active_cred and file_cred into the MAC framework explicitly for mac_check_vnode_{poll,read,stat,write}(). Pass in fp->f_cred when calling these checks with a struct file available. Otherwise, pass NOCRED. All currently MAC policies use active_cred, but could now offer the cached credential semantic used for the base system security model. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 19:04:53 +00:00
mac_none_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *label)
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
{
return (0);
}
Break out mac_check_vnode_op() into three seperate checks: mac_check_vnode_poll(), mac_check_vnode_read(), mac_check_vnode_write(). This improves the consistency with other existing vnode checks, and allows policies to avoid implementing switch statements to determine what operations they do and do not want to authorize. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:43:25 +00:00
static int
Pass active_cred and file_cred into the MAC framework explicitly for mac_check_vnode_{poll,read,stat,write}(). Pass in fp->f_cred when calling these checks with a struct file available. Otherwise, pass NOCRED. All currently MAC policies use active_cred, but could now offer the cached credential semantic used for the base system security model. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 19:04:53 +00:00
mac_none_check_vnode_write(struct ucred *active_cred,
struct ucred *file_cred, struct vnode *vp, struct label *label)
Break out mac_check_vnode_op() into three seperate checks: mac_check_vnode_poll(), mac_check_vnode_read(), mac_check_vnode_write(). This improves the consistency with other existing vnode checks, and allows policies to avoid implementing switch statements to determine what operations they do and do not want to authorize. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-08-19 16:43:25 +00:00
{
return (0);
}
Move to C99 sparse structure initialization for the mac_policy_ops structure definition, rather than using an operation vector we translate into the structure. Originally, we used a vector for two reasons: (1) We wanted to define the structure sparsely, which wasn't supported by the C compiler for structures. For a policy with five entry points, you don't want to have to stick in a few hundred NULL function pointers. (2) We thought it would improve ABI compatibility allowing modules to work with kernels that had a superset of the entry points defined in the module, even if the kernel had changed its entry point set. Both of these no longer apply: (1) C99 gives us a way to sparsely define a static structure. (2) The ABI problems existed anyway, due to enumeration numbers, argument changes, and semantic mismatches. Since the going rule for FreeBSD is that you really need your modules to pretty closely match your kernel, it's not worth the complexity. This submit eliminates the operation vector, dynamic allocation of the operation structure, copying of the vector to the structure, and redoes the vectors in each policy to direct structure definitions. One enourmous benefit of this change is that we now get decent type checking on policy entry point implementation arguments. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-30 18:48:51 +00:00
static struct mac_policy_ops mac_none_ops =
{
.mpo_destroy = mac_none_destroy,
.mpo_init = mac_none_init,
.mpo_syscall = mac_none_syscall,
.mpo_init_bpfdesc_label = mac_none_init_label,
.mpo_init_cred_label = mac_none_init_label,
.mpo_init_devfsdirent_label = mac_none_init_label,
.mpo_init_ifnet_label = mac_none_init_label,
.mpo_init_ipq_label = mac_none_init_label,
.mpo_init_mbuf_label = mac_none_init_label_waitcheck,
.mpo_init_mount_label = mac_none_init_label,
.mpo_init_mount_fs_label = mac_none_init_label,
.mpo_init_pipe_label = mac_none_init_label,
.mpo_init_socket_label = mac_none_init_label_waitcheck,
.mpo_init_socket_peer_label = mac_none_init_label_waitcheck,
.mpo_init_vnode_label = mac_none_init_label,
.mpo_destroy_bpfdesc_label = mac_none_destroy_label,
.mpo_destroy_cred_label = mac_none_destroy_label,
.mpo_destroy_devfsdirent_label = mac_none_destroy_label,
.mpo_destroy_ifnet_label = mac_none_destroy_label,
.mpo_destroy_ipq_label = mac_none_destroy_label,
.mpo_destroy_mbuf_label = mac_none_destroy_label,
.mpo_destroy_mount_label = mac_none_destroy_label,
.mpo_destroy_mount_fs_label = mac_none_destroy_label,
.mpo_destroy_pipe_label = mac_none_destroy_label,
.mpo_destroy_socket_label = mac_none_destroy_label,
.mpo_destroy_socket_peer_label = mac_none_destroy_label,
.mpo_destroy_vnode_label = mac_none_destroy_label,
.mpo_externalize_cred_label = mac_none_externalize_label,
.mpo_externalize_ifnet_label = mac_none_externalize_label,
.mpo_externalize_pipe_label = mac_none_externalize_label,
.mpo_externalize_socket_label = mac_none_externalize_label,
.mpo_externalize_socket_peer_label = mac_none_externalize_label,
.mpo_externalize_vnode_label = mac_none_externalize_label,
.mpo_internalize_cred_label = mac_none_internalize_label,
.mpo_internalize_ifnet_label = mac_none_internalize_label,
.mpo_internalize_pipe_label = mac_none_internalize_label,
.mpo_internalize_socket_label = mac_none_internalize_label,
.mpo_internalize_vnode_label = mac_none_internalize_label,
.mpo_associate_vnode_devfs = mac_none_associate_vnode_devfs,
.mpo_associate_vnode_extattr = mac_none_associate_vnode_extattr,
.mpo_associate_vnode_singlelabel = mac_none_associate_vnode_singlelabel,
.mpo_create_devfs_device = mac_none_create_devfs_device,
.mpo_create_devfs_directory = mac_none_create_devfs_directory,
.mpo_create_devfs_symlink = mac_none_create_devfs_symlink,
.mpo_create_vnode_extattr = mac_none_create_vnode_extattr,
.mpo_create_mount = mac_none_create_mount,
.mpo_create_root_mount = mac_none_create_root_mount,
.mpo_relabel_vnode = mac_none_relabel_vnode,
.mpo_setlabel_vnode_extattr = mac_none_setlabel_vnode_extattr,
.mpo_update_devfsdirent = mac_none_update_devfsdirent,
.mpo_create_mbuf_from_socket = mac_none_create_mbuf_from_socket,
.mpo_create_pipe = mac_none_create_pipe,
.mpo_create_socket = mac_none_create_socket,
.mpo_create_socket_from_socket = mac_none_create_socket_from_socket,
.mpo_relabel_pipe = mac_none_relabel_pipe,
.mpo_relabel_socket = mac_none_relabel_socket,
.mpo_set_socket_peer_from_mbuf = mac_none_set_socket_peer_from_mbuf,
.mpo_set_socket_peer_from_socket = mac_none_set_socket_peer_from_socket,
.mpo_create_bpfdesc = mac_none_create_bpfdesc,
.mpo_create_ifnet = mac_none_create_ifnet,
.mpo_create_ipq = mac_none_create_ipq,
.mpo_create_datagram_from_ipq = mac_none_create_datagram_from_ipq,
.mpo_create_fragment = mac_none_create_fragment,
.mpo_create_ipq = mac_none_create_ipq,
.mpo_create_mbuf_from_mbuf = mac_none_create_mbuf_from_mbuf,
.mpo_create_mbuf_linklayer = mac_none_create_mbuf_linklayer,
.mpo_create_mbuf_from_bpfdesc = mac_none_create_mbuf_from_bpfdesc,
.mpo_create_mbuf_from_ifnet = mac_none_create_mbuf_from_ifnet,
.mpo_create_mbuf_multicast_encap = mac_none_create_mbuf_multicast_encap,
.mpo_create_mbuf_netlayer = mac_none_create_mbuf_netlayer,
.mpo_fragment_match = mac_none_fragment_match,
.mpo_relabel_ifnet = mac_none_relabel_ifnet,
.mpo_update_ipq = mac_none_update_ipq,
.mpo_create_cred = mac_none_create_cred,
.mpo_execve_transition = mac_none_execve_transition,
.mpo_execve_will_transition = mac_none_execve_will_transition,
.mpo_create_proc0 = mac_none_create_proc0,
.mpo_create_proc1 = mac_none_create_proc1,
.mpo_relabel_cred = mac_none_relabel_cred,
.mpo_check_bpfdesc_receive = mac_none_check_bpfdesc_receive,
.mpo_check_cred_relabel = mac_none_check_cred_relabel,
.mpo_check_cred_visible = mac_none_check_cred_visible,
.mpo_check_ifnet_relabel = mac_none_check_ifnet_relabel,
.mpo_check_ifnet_transmit = mac_none_check_ifnet_transmit,
.mpo_check_mount_stat = mac_none_check_mount_stat,
.mpo_check_pipe_ioctl = mac_none_check_pipe_ioctl,
.mpo_check_pipe_poll = mac_none_check_pipe_poll,
.mpo_check_pipe_read = mac_none_check_pipe_read,
.mpo_check_pipe_relabel = mac_none_check_pipe_relabel,
.mpo_check_pipe_stat = mac_none_check_pipe_stat,
.mpo_check_pipe_write = mac_none_check_pipe_write,
.mpo_check_proc_debug = mac_none_check_proc_debug,
.mpo_check_proc_sched = mac_none_check_proc_sched,
.mpo_check_proc_signal = mac_none_check_proc_signal,
.mpo_check_socket_bind = mac_none_check_socket_bind,
.mpo_check_socket_connect = mac_none_check_socket_connect,
.mpo_check_socket_deliver = mac_none_check_socket_deliver,
.mpo_check_socket_listen = mac_none_check_socket_listen,
.mpo_check_socket_relabel = mac_none_check_socket_relabel,
.mpo_check_socket_visible = mac_none_check_socket_visible,
.mpo_check_system_reboot = mac_none_check_system_reboot,
.mpo_check_system_swapon = mac_none_check_system_swapon,
.mpo_check_system_sysctl = mac_none_check_system_sysctl,
.mpo_check_vnode_access = mac_none_check_vnode_access,
.mpo_check_vnode_chdir = mac_none_check_vnode_chdir,
.mpo_check_vnode_chroot = mac_none_check_vnode_chroot,
.mpo_check_vnode_create = mac_none_check_vnode_create,
.mpo_check_vnode_delete = mac_none_check_vnode_delete,
.mpo_check_vnode_deleteacl = mac_none_check_vnode_deleteacl,
.mpo_check_vnode_exec = mac_none_check_vnode_exec,
.mpo_check_vnode_getacl = mac_none_check_vnode_getacl,
.mpo_check_vnode_getextattr = mac_none_check_vnode_getextattr,
.mpo_check_vnode_link = mac_none_check_vnode_link,
.mpo_check_vnode_lookup = mac_none_check_vnode_lookup,
.mpo_check_vnode_mmap = mac_none_check_vnode_mmap,
.mpo_check_vnode_mprotect = mac_none_check_vnode_mprotect,
.mpo_check_vnode_open = mac_none_check_vnode_open,
.mpo_check_vnode_poll = mac_none_check_vnode_poll,
.mpo_check_vnode_read = mac_none_check_vnode_read,
.mpo_check_vnode_readdir = mac_none_check_vnode_readdir,
.mpo_check_vnode_readlink = mac_none_check_vnode_readlink,
.mpo_check_vnode_relabel = mac_none_check_vnode_relabel,
.mpo_check_vnode_rename_from = mac_none_check_vnode_rename_from,
.mpo_check_vnode_rename_to = mac_none_check_vnode_rename_to,
.mpo_check_vnode_revoke = mac_none_check_vnode_revoke,
.mpo_check_vnode_setacl = mac_none_check_vnode_setacl,
.mpo_check_vnode_setextattr = mac_none_check_vnode_setextattr,
.mpo_check_vnode_setflags = mac_none_check_vnode_setflags,
.mpo_check_vnode_setmode = mac_none_check_vnode_setmode,
.mpo_check_vnode_setowner = mac_none_check_vnode_setowner,
.mpo_check_vnode_setutimes = mac_none_check_vnode_setutimes,
.mpo_check_vnode_stat = mac_none_check_vnode_stat,
.mpo_check_vnode_write = mac_none_check_vnode_write,
Introduce support for Mandatory Access Control and extensible kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
2002-07-31 18:07:45 +00:00
};
Move to C99 sparse structure initialization for the mac_policy_ops structure definition, rather than using an operation vector we translate into the structure. Originally, we used a vector for two reasons: (1) We wanted to define the structure sparsely, which wasn't supported by the C compiler for structures. For a policy with five entry points, you don't want to have to stick in a few hundred NULL function pointers. (2) We thought it would improve ABI compatibility allowing modules to work with kernels that had a superset of the entry points defined in the module, even if the kernel had changed its entry point set. Both of these no longer apply: (1) C99 gives us a way to sparsely define a static structure. (2) The ABI problems existed anyway, due to enumeration numbers, argument changes, and semantic mismatches. Since the going rule for FreeBSD is that you really need your modules to pretty closely match your kernel, it's not worth the complexity. This submit eliminates the operation vector, dynamic allocation of the operation structure, copying of the vector to the structure, and redoes the vectors in each policy to direct structure definitions. One enourmous benefit of this change is that we now get decent type checking on policy entry point implementation arguments. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2002-10-30 18:48:51 +00:00
MAC_POLICY_SET(&mac_none_ops, trustedbsd_mac_none, "TrustedBSD MAC/None",
Prefer NULL to 0 when passing a NULL pointer.
2002-08-20 02:54:09 +00:00
MPC_LOADTIME_FLAG_UNLOADOK, NULL);
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