freebsd-dev/sys/security/mac/mac_policy.h

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/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 2001-2005 Networks Associates Technology, Inc.
* Copyright (c) 2005-2006 SPARTA, Inc.
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* 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.
*
When devfs cloning takes place, provide access to the credential of the process that caused the clone event to take place for the device driver creating the device. This allows cloned device drivers to adapt the device node based on security aspects of the process, such as the uid, gid, and MAC label. - Add a cred reference to struct cdev, so that when a device node is instantiated as a vnode, the cloning credential can be exposed to MAC. - Add make_dev_cred(), a version of make_dev() that additionally accepts the credential to stick in the struct cdev. Implement it and make_dev() in terms of a back-end make_dev_credv(). - Add a new event handler, dev_clone_cred, which can be registered to receive the credential instead of dev_clone, if desired. - Modify the MAC entry point mac_create_devfs_device() to accept an optional credential pointer (may be NULL), so that MAC policies can inspect and act on the label or other elements of the credential when initializing the skeleton device protections. - Modify tty_pty.c to register clone_dev_cred and invoke make_dev_cred(), so that the pty clone credential is exposed to the MAC Framework. While currently primarily focussed on MAC policies, this change is also a prerequisite for changes to allow ptys to be instantiated with the UID of the process looking up the pty. This requires further changes to the pty driver -- in particular, to immediately recycle pty nodes on last close so that the credential-related state can be recreated on next lookup. Submitted by: Andrew Reisse <andrew.reisse@sparta.com> Obtained from: TrustedBSD Project Sponsored by: SPAWAR, SPARTA MFC after: 1 week MFC note: Merge to 6.x, but not 5.x for ABI reasons
2005-07-14 10:22:09 +00:00
* This software was enhanced by SPARTA ISSO under SPAWAR contract
* N66001-04-C-6019 ("SEFOS").
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Kernel interface for MAC policy modules.
*/
#ifndef _SYS_SECURITY_MAC_MAC_POLICY_H_
#define _SYS_SECURITY_MAC_MAC_POLICY_H_
#ifndef _KERNEL
#error "no user-serviceable parts inside"
#endif
/*-
* Pluggable access control policy definition structure.
*
* List of operations that are performed as part of the implementation of a
* MAC policy. Policy implementors declare operations with a mac_policy_ops
* structure, and using the MAC_POLICY_SET() macro. If an entry point is not
* declared, then then the policy will be ignored during evaluation of that
* event or check.
*
* Operations are sorted first by general class of operation, then
* alphabetically.
*/
#include <sys/acl.h> /* XXX acl_type_t */
struct acl;
struct auditinfo;
struct auditinfo_addr;
struct bpf_d;
struct cdev;
struct componentname;
struct devfs_dirent;
struct ifnet;
struct image_params;
struct inpcb;
struct ipq;
struct ksem;
struct label;
struct mac_policy_conf;
struct mbuf;
struct mount;
struct msg;
struct msqid_kernel;
Coalesce pipe allocations and frees. Previously, the pipe code would allocate two 'struct pipe's from the pipe zone, and malloc a mutex. - Create a new "struct pipepair" object holding the two 'struct pipe' instances, struct mutex, and struct label reference. Pipe structures now have a back-pointer to the pipe pair, and a 'pipe_present' flag to indicate whether the half has been closed. - Perform mutex init/destroy in zone init/destroy, avoiding reallocating the mutex for each pipe. Perform most pipe structure setup in zone constructor. - VM memory mappings for pageable buffers are still done outside of the UMA zone. - Change MAC API to speak 'struct pipepair' instead of 'struct pipe', update many policies. MAC labels are also handled outside of the UMA zone for now. Label-only policy modules don't have to be recompiled, but if a module is recompiled, its pipe entry points will need to be updated. If a module actually reached into the pipe structures (unlikely), that would also need to be modified. These changes substantially simplify failure handling in the pipe code as there are many fewer possible failure modes. On half-close, pipes no longer free the 'struct pipe' for the closed half until a full-close takes place. However, VM mapped buffers are still released on half-close. Some code refactoring is now possible to clean up some of the back references, etc; this patch attempts not to change the structure of most of the pipe implementation, only allocation/free code paths, so as to avoid introducing bugs (hopefully). This cuts about 8%-9% off the cost of sequential pipe allocation and free in system call tests on UP and SMP in my micro-benchmarks. May or may not make a difference in macro-benchmarks, but doing less work is good. Reviewed by: juli, tjr Testing help: dwhite, fenestro, scottl, et al
2004-02-01 05:56:51 +00:00
struct pipepair;
struct proc;
struct sbuf;
struct semid_kernel;
struct shmid_kernel;
struct sockaddr;
struct socket;
struct sysctl_oid;
struct sysctl_req;
struct thread;
struct ucred;
struct uio;
struct vattr;
struct vnode;
/*
* Policy module operations.
*/
typedef void (*mpo_destroy_t)(struct mac_policy_conf *mpc);
typedef void (*mpo_init_t)(struct mac_policy_conf *mpc);
/*
* General policy-directed security system call so that policies may
* implement new services without reserving explicit system call numbers.
*/
typedef int (*mpo_syscall_t)(struct thread *td, int call, void *arg);
/*
* Place-holder function pointers for ABI-compatibility purposes.
*/
typedef void (*mpo_placeholder_t)(void);
/*
* Operations sorted alphabetically by primary object type and then method.
*/
typedef int (*mpo_bpfdesc_check_receive_t)(struct bpf_d *d,
struct label *dlabel, struct ifnet *ifp,
struct label *ifplabel);
typedef void (*mpo_bpfdesc_create_t)(struct ucred *cred,
struct bpf_d *d, struct label *dlabel);
typedef void (*mpo_bpfdesc_create_mbuf_t)(struct bpf_d *d,
struct label *dlabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_bpfdesc_destroy_label_t)(struct label *label);
typedef void (*mpo_bpfdesc_init_label_t)(struct label *label);
typedef int (*mpo_cred_check_relabel_t)(struct ucred *cred,
struct label *newlabel);
typedef int (*mpo_cred_check_visible_t)(struct ucred *cr1,
struct ucred *cr2);
typedef void (*mpo_cred_copy_label_t)(struct label *src,
struct label *dest);
typedef void (*mpo_cred_destroy_label_t)(struct label *label);
typedef int (*mpo_cred_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef void (*mpo_cred_init_label_t)(struct label *label);
typedef int (*mpo_cred_internalize_label_t)(struct label *label,
char *element_name, char *element_data, int *claimed);
typedef void (*mpo_cred_relabel_t)(struct ucred *cred,
struct label *newlabel);
typedef void (*mpo_devfs_create_device_t)(struct ucred *cred,
When devfs cloning takes place, provide access to the credential of the process that caused the clone event to take place for the device driver creating the device. This allows cloned device drivers to adapt the device node based on security aspects of the process, such as the uid, gid, and MAC label. - Add a cred reference to struct cdev, so that when a device node is instantiated as a vnode, the cloning credential can be exposed to MAC. - Add make_dev_cred(), a version of make_dev() that additionally accepts the credential to stick in the struct cdev. Implement it and make_dev() in terms of a back-end make_dev_credv(). - Add a new event handler, dev_clone_cred, which can be registered to receive the credential instead of dev_clone, if desired. - Modify the MAC entry point mac_create_devfs_device() to accept an optional credential pointer (may be NULL), so that MAC policies can inspect and act on the label or other elements of the credential when initializing the skeleton device protections. - Modify tty_pty.c to register clone_dev_cred and invoke make_dev_cred(), so that the pty clone credential is exposed to the MAC Framework. While currently primarily focussed on MAC policies, this change is also a prerequisite for changes to allow ptys to be instantiated with the UID of the process looking up the pty. This requires further changes to the pty driver -- in particular, to immediately recycle pty nodes on last close so that the credential-related state can be recreated on next lookup. Submitted by: Andrew Reisse <andrew.reisse@sparta.com> Obtained from: TrustedBSD Project Sponsored by: SPAWAR, SPARTA MFC after: 1 week MFC note: Merge to 6.x, but not 5.x for ABI reasons
2005-07-14 10:22:09 +00:00
struct mount *mp, struct cdev *dev,
struct devfs_dirent *de, struct label *delabel);
typedef void (*mpo_devfs_create_directory_t)(struct mount *mp,
char *dirname, int dirnamelen, struct devfs_dirent *de,
struct label *delabel);
typedef void (*mpo_devfs_create_symlink_t)(struct ucred *cred,
struct mount *mp, struct devfs_dirent *dd,
struct label *ddlabel, struct devfs_dirent *de,
struct label *delabel);
typedef void (*mpo_devfs_destroy_label_t)(struct label *label);
typedef void (*mpo_devfs_init_label_t)(struct label *label);
typedef void (*mpo_devfs_update_t)(struct mount *mp,
struct devfs_dirent *de, struct label *delabel,
struct vnode *vp, struct label *vplabel);
typedef void (*mpo_devfs_vnode_associate_t)(struct mount *mp,
struct label *mplabel, struct devfs_dirent *de,
struct label *delabel, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_ifnet_check_relabel_t)(struct ucred *cred,
struct ifnet *ifp, struct label *ifplabel,
struct label *newlabel);
typedef int (*mpo_ifnet_check_transmit_t)(struct ifnet *ifp,
struct label *ifplabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_ifnet_copy_label_t)(struct label *src,
struct label *dest);
typedef void (*mpo_ifnet_create_t)(struct ifnet *ifp,
struct label *ifplabel);
typedef void (*mpo_ifnet_create_mbuf_t)(struct ifnet *ifp,
struct label *ifplabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_ifnet_destroy_label_t)(struct label *label);
typedef int (*mpo_ifnet_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef void (*mpo_ifnet_init_label_t)(struct label *label);
typedef int (*mpo_ifnet_internalize_label_t)(struct label *label,
char *element_name, char *element_data, int *claimed);
typedef void (*mpo_ifnet_relabel_t)(struct ucred *cred, struct ifnet *ifp,
struct label *ifplabel, struct label *newlabel);
typedef int (*mpo_inpcb_check_deliver_t)(struct inpcb *inp,
struct label *inplabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_inpcb_create_t)(struct socket *so,
struct label *solabel, struct inpcb *inp,
struct label *inplabel);
typedef void (*mpo_inpcb_create_mbuf_t)(struct inpcb *inp,
struct label *inplabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_inpcb_destroy_label_t)(struct label *label);
typedef int (*mpo_inpcb_init_label_t)(struct label *label, int flag);
typedef void (*mpo_inpcb_sosetlabel_t)(struct socket *so,
struct label *label, struct inpcb *inp,
struct label *inplabel);
typedef void (*mpo_ipq_create_t)(struct mbuf *m, struct label *mlabel,
struct ipq *ipq, struct label *ipqlabel);
typedef void (*mpo_ipq_destroy_label_t)(struct label *label);
typedef int (*mpo_ipq_init_label_t)(struct label *label, int flag);
typedef int (*mpo_ipq_match_t)(struct mbuf *m, struct label *mlabel,
struct ipq *ipq, struct label *ipqlabel);
typedef void (*mpo_ipq_reassemble)(struct ipq *ipq,
struct label *ipqlabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_ipq_update_t)(struct mbuf *m, struct label *mlabel,
struct ipq *ipq, struct label *ipqlabel);
typedef int (*mpo_kenv_check_dump_t)(struct ucred *cred);
typedef int (*mpo_kenv_check_get_t)(struct ucred *cred, char *name);
typedef int (*mpo_kenv_check_set_t)(struct ucred *cred, char *name,
char *value);
typedef int (*mpo_kenv_check_unset_t)(struct ucred *cred, char *name);
typedef int (*mpo_kld_check_load_t)(struct ucred *cred, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_kld_check_stat_t)(struct ucred *cred);
typedef void (*mpo_mbuf_copy_label_t)(struct label *src,
struct label *dest);
typedef void (*mpo_mbuf_create_linklayer_t)(struct ifnet *ifp,
struct label *ifplabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_mbuf_create_multicast_encap_t)(struct mbuf *m,
struct label *mlabel, struct ifnet *ifp,
struct label *ifplabel, struct mbuf *mnew,
struct label *mnewlabel);
typedef void (*mpo_mbuf_create_netlayer_t)(struct mbuf *m,
struct label *mlabel, struct mbuf *mnew,
struct label *mnewlabel);
typedef void (*mpo_mbuf_destroy_label_t)(struct label *label);
typedef int (*mpo_mbuf_init_label_t)(struct label *label, int flag);
typedef int (*mpo_mount_check_stat_t)(struct ucred *cred,
struct mount *mp, struct label *mplabel);
typedef void (*mpo_mount_create_t)(struct ucred *cred, struct mount *mp,
struct label *mplabel);
typedef void (*mpo_mount_destroy_label_t)(struct label *label);
typedef void (*mpo_mount_init_label_t)(struct label *label);
typedef void (*mpo_netinet_firewall_send_t)(struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_netinet_fragment_t)(struct mbuf *m,
struct label *mlabel, struct mbuf *frag,
struct label *fraglabel);
typedef void (*mpo_netinet_icmp_reply_t)(struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_netinet_tcp_reply_t)(struct mbuf *m,
struct label *mlabel);
typedef int (*mpo_pipe_check_ioctl_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel,
unsigned long cmd, void *data);
typedef int (*mpo_pipe_check_poll_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel);
typedef int (*mpo_pipe_check_read_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel);
typedef int (*mpo_pipe_check_relabel_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel,
struct label *newlabel);
typedef int (*mpo_pipe_check_stat_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel);
typedef int (*mpo_pipe_check_write_t)(struct ucred *cred,
struct pipepair *pp, struct label *pplabel);
typedef void (*mpo_pipe_copy_label_t)(struct label *src,
struct label *dest);
typedef void (*mpo_pipe_create_t)(struct ucred *cred, struct pipepair *pp,
struct label *pplabel);
typedef void (*mpo_pipe_destroy_label_t)(struct label *label);
typedef int (*mpo_pipe_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef void (*mpo_pipe_init_label_t)(struct label *label);
typedef int (*mpo_pipe_internalize_label_t)(struct label *label,
char *element_name, char *element_data, int *claimed);
typedef void (*mpo_pipe_relabel_t)(struct ucred *cred, struct pipepair *pp,
struct label *oldlabel, struct label *newlabel);
typedef int (*mpo_posixsem_check_destroy_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef int (*mpo_posixsem_check_getvalue_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef int (*mpo_posixsem_check_open_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef int (*mpo_posixsem_check_post_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef int (*mpo_posixsem_check_unlink_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef int (*mpo_posixsem_check_wait_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef void (*mpo_posixsem_create_t)(struct ucred *cred,
struct ksem *ks, struct label *kslabel);
typedef void (*mpo_posixsem_destroy_label_t)(struct label *label);
typedef void (*mpo_posixsem_init_label_t)(struct label *label);
typedef int (*mpo_priv_check_t)(struct ucred *cred, int priv);
typedef int (*mpo_priv_grant_t)(struct ucred *cred, int priv);
typedef void (*mpo_proc_associate_nfsd_t)(struct ucred *cred);
typedef int (*mpo_proc_check_debug_t)(struct ucred *cred,
struct proc *p);
typedef int (*mpo_proc_check_sched_t)(struct ucred *cred,
struct proc *p);
typedef int (*mpo_proc_check_setaudit_t)(struct ucred *cred,
struct auditinfo *ai);
typedef int (*mpo_proc_check_setaudit_addr_t)(struct ucred *cred,
struct auditinfo_addr *aia);
typedef int (*mpo_proc_check_setauid_t)(struct ucred *cred, uid_t auid);
typedef int (*mpo_proc_check_setegid_t)(struct ucred *cred, gid_t egid);
typedef int (*mpo_proc_check_seteuid_t)(struct ucred *cred, uid_t euid);
typedef int (*mpo_proc_check_setgid_t)(struct ucred *cred, gid_t gid);
typedef int (*mpo_proc_check_setgroups_t)(struct ucred *cred, int ngroups,
gid_t *gidset);
typedef int (*mpo_proc_check_setregid_t)(struct ucred *cred, gid_t rgid,
gid_t egid);
typedef int (*mpo_proc_check_setresgid_t)(struct ucred *cred, gid_t rgid,
gid_t egid, gid_t sgid);
typedef int (*mpo_proc_check_setresuid_t)(struct ucred *cred, uid_t ruid,
uid_t euid, uid_t suid);
typedef int (*mpo_proc_check_setreuid_t)(struct ucred *cred, uid_t ruid,
uid_t euid);
typedef int (*mpo_proc_check_setuid_t)(struct ucred *cred, uid_t uid);
typedef int (*mpo_proc_check_signal_t)(struct ucred *cred,
struct proc *proc, int signum);
typedef int (*mpo_proc_check_wait_t)(struct ucred *cred,
struct proc *proc);
typedef void (*mpo_proc_create_init_t)(struct ucred *cred);
typedef void (*mpo_proc_create_swapper_t)(struct ucred *cred);
typedef void (*mpo_proc_destroy_label_t)(struct label *label);
typedef void (*mpo_proc_init_label_t)(struct label *label);
typedef int (*mpo_socket_check_accept_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_bind_t)(struct ucred *cred,
struct socket *so, struct label *solabel,
struct sockaddr *sa);
typedef int (*mpo_socket_check_connect_t)(struct ucred *cred,
struct socket *so, struct label *solabel,
struct sockaddr *sa);
typedef int (*mpo_socket_check_create_t)(struct ucred *cred, int domain,
int type, int protocol);
typedef int (*mpo_socket_check_deliver_t)(struct socket *so,
struct label *solabel, struct mbuf *m,
struct label *mlabel);
typedef int (*mpo_socket_check_listen_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_poll_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_receive_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_relabel_t)(struct ucred *cred,
struct socket *so, struct label *solabel,
struct label *newlabel);
typedef int (*mpo_socket_check_send_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_stat_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef int (*mpo_socket_check_visible_t)(struct ucred *cred,
struct socket *so, struct label *solabel);
typedef void (*mpo_socket_copy_label_t)(struct label *src,
struct label *dest);
typedef void (*mpo_socket_create_t)(struct ucred *cred, struct socket *so,
struct label *solabel);
typedef void (*mpo_socket_create_mbuf_t)(struct socket *so,
struct label *solabel, struct mbuf *m,
struct label *mlabel);
typedef void (*mpo_socket_destroy_label_t)(struct label *label);
typedef int (*mpo_socket_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef int (*mpo_socket_init_label_t)(struct label *label, int flag);
typedef int (*mpo_socket_internalize_label_t)(struct label *label,
char *element_name, char *element_data, int *claimed);
typedef void (*mpo_socket_newconn_t)(struct socket *oldso,
struct label *oldsolabel, struct socket *newso,
struct label *newsolabel);
typedef void (*mpo_socket_relabel_t)(struct ucred *cred, struct socket *so,
struct label *oldlabel, struct label *newlabel);
typedef void (*mpo_socketpeer_destroy_label_t)(struct label *label);
typedef int (*mpo_socketpeer_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef int (*mpo_socketpeer_init_label_t)(struct label *label,
int flag);
typedef void (*mpo_socketpeer_set_from_mbuf_t)(struct mbuf *m,
struct label *mlabel, struct socket *so,
struct label *sopeerlabel);
typedef void (*mpo_socketpeer_set_from_socket_t)(struct socket *oldso,
struct label *oldsolabel, struct socket *newso,
struct label *newsopeerlabel);
typedef void (*mpo_syncache_create_t)(struct label *label,
struct inpcb *inp);
typedef void (*mpo_syncache_create_mbuf_t)(struct label *sc_label,
struct mbuf *m, struct label *mlabel);
typedef void (*mpo_syncache_destroy_label_t)(struct label *label);
typedef int (*mpo_syncache_init_label_t)(struct label *label, int flag);
typedef int (*mpo_system_check_acct_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_system_check_audit_t)(struct ucred *cred, void *record,
int length);
typedef int (*mpo_system_check_auditctl_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_system_check_auditon_t)(struct ucred *cred, int cmd);
typedef int (*mpo_system_check_reboot_t)(struct ucred *cred, int howto);
typedef int (*mpo_system_check_swapon_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_system_check_swapoff_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_system_check_sysctl_t)(struct ucred *cred,
struct sysctl_oid *oidp, void *arg1, int arg2,
struct sysctl_req *req);
typedef void (*mpo_sysvmsg_cleanup_t)(struct label *msglabel);
typedef void (*mpo_sysvmsg_create_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqlabel,
struct msg *msgptr, struct label *msglabel);
typedef void (*mpo_sysvmsg_destroy_label_t)(struct label *label);
typedef void (*mpo_sysvmsg_init_label_t)(struct label *label);
typedef int (*mpo_sysvmsq_check_msgmsq_t)(struct ucred *cred,
struct msg *msgptr, struct label *msglabel,
struct msqid_kernel *msqkptr, struct label *msqklabel);
typedef int (*mpo_sysvmsq_check_msgrcv_t)(struct ucred *cred,
struct msg *msgptr, struct label *msglabel);
typedef int (*mpo_sysvmsq_check_msgrmid_t)(struct ucred *cred,
struct msg *msgptr, struct label *msglabel);
typedef int (*mpo_sysvmsq_check_msqget_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqklabel);
typedef int (*mpo_sysvmsq_check_msqctl_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqklabel,
int cmd);
typedef int (*mpo_sysvmsq_check_msqrcv_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqklabel);
typedef int (*mpo_sysvmsq_check_msqsnd_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqklabel);
typedef void (*mpo_sysvmsq_cleanup_t)(struct label *msqlabel);
typedef void (*mpo_sysvmsq_create_t)(struct ucred *cred,
struct msqid_kernel *msqkptr, struct label *msqlabel);
typedef void (*mpo_sysvmsq_destroy_label_t)(struct label *label);
typedef void (*mpo_sysvmsq_init_label_t)(struct label *label);
typedef int (*mpo_sysvsem_check_semctl_t)(struct ucred *cred,
struct semid_kernel *semakptr, struct label *semaklabel,
int cmd);
typedef int (*mpo_sysvsem_check_semget_t)(struct ucred *cred,
struct semid_kernel *semakptr, struct label *semaklabel);
typedef int (*mpo_sysvsem_check_semop_t)(struct ucred *cred,
struct semid_kernel *semakptr, struct label *semaklabel,
size_t accesstype);
typedef void (*mpo_sysvsem_cleanup_t)(struct label *semalabel);
typedef void (*mpo_sysvsem_create_t)(struct ucred *cred,
struct semid_kernel *semakptr, struct label *semalabel);
typedef void (*mpo_sysvsem_destroy_label_t)(struct label *label);
typedef void (*mpo_sysvsem_init_label_t)(struct label *label);
typedef int (*mpo_sysvshm_check_shmat_t)(struct ucred *cred,
struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int shmflg);
typedef int (*mpo_sysvshm_check_shmctl_t)(struct ucred *cred,
struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int cmd);
typedef int (*mpo_sysvshm_check_shmdt_t)(struct ucred *cred,
struct shmid_kernel *shmsegptr,
struct label *shmseglabel);
typedef int (*mpo_sysvshm_check_shmget_t)(struct ucred *cred,
struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int shmflg);
typedef void (*mpo_sysvshm_cleanup_t)(struct label *shmlabel);
typedef void (*mpo_sysvshm_create_t)(struct ucred *cred,
struct shmid_kernel *shmsegptr, struct label *shmlabel);
typedef void (*mpo_sysvshm_destroy_label_t)(struct label *label);
typedef void (*mpo_sysvshm_init_label_t)(struct label *label);
typedef void (*mpo_thread_userret_t)(struct thread *thread);
typedef int (*mpo_vnode_associate_extattr_t)(struct mount *mp,
struct label *mplabel, struct vnode *vp,
struct label *vplabel);
typedef void (*mpo_vnode_associate_singlelabel_t)(struct mount *mp,
struct label *mplabel, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_vnode_check_access_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, int acc_mode);
typedef int (*mpo_vnode_check_chdir_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel);
typedef int (*mpo_vnode_check_chroot_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel);
typedef int (*mpo_vnode_check_create_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct componentname *cnp, struct vattr *vap);
typedef int (*mpo_vnode_check_deleteacl_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
acl_type_t type);
typedef int (*mpo_vnode_check_deleteextattr_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
int attrnamespace, const char *name);
typedef int (*mpo_vnode_check_exec_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
struct image_params *imgp, struct label *execlabel);
typedef int (*mpo_vnode_check_getacl_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
acl_type_t type);
typedef int (*mpo_vnode_check_getextattr_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
int attrnamespace, const char *name, struct uio *uio);
typedef int (*mpo_vnode_check_link_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel,
struct componentname *cnp);
typedef int (*mpo_vnode_check_listextattr_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
int attrnamespace);
typedef int (*mpo_vnode_check_lookup_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct componentname *cnp);
typedef int (*mpo_vnode_check_mmap_t)(struct ucred *cred,
struct vnode *vp, struct label *label, int prot,
int flags);
typedef void (*mpo_vnode_check_mmap_downgrade_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, int *prot);
typedef int (*mpo_vnode_check_mprotect_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, int prot);
typedef int (*mpo_vnode_check_open_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, int acc_mode);
typedef int (*mpo_vnode_check_poll_t)(struct ucred *active_cred,
struct ucred *file_cred, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_vnode_check_read_t)(struct ucred *active_cred,
struct ucred *file_cred, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_vnode_check_readdir_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel);
typedef int (*mpo_vnode_check_readlink_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_vnode_check_relabel_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
struct label *newlabel);
typedef int (*mpo_vnode_check_rename_from_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel,
struct componentname *cnp);
typedef int (*mpo_vnode_check_rename_to_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel, int samedir,
struct componentname *cnp);
typedef int (*mpo_vnode_check_revoke_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel);
typedef int (*mpo_vnode_check_setacl_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, acl_type_t type,
struct acl *acl);
typedef int (*mpo_vnode_check_setextattr_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
int attrnamespace, const char *name, struct uio *uio);
typedef int (*mpo_vnode_check_setflags_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, u_long flags);
typedef int (*mpo_vnode_check_setmode_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, mode_t mode);
typedef int (*mpo_vnode_check_setowner_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel, uid_t uid,
gid_t gid);
typedef int (*mpo_vnode_check_setutimes_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
struct timespec atime, struct timespec mtime);
typedef int (*mpo_vnode_check_stat_t)(struct ucred *active_cred,
struct ucred *file_cred, struct vnode *vp,
struct label *vplabel);
typedef int (*mpo_vnode_check_unlink_t)(struct ucred *cred,
struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel,
struct componentname *cnp);
typedef int (*mpo_vnode_check_write_t)(struct ucred *active_cred,
struct ucred *file_cred, struct vnode *vp,
struct label *vplabel);
typedef void (*mpo_vnode_copy_label_t)(struct label *src,
struct label *dest);
typedef int (*mpo_vnode_create_extattr_t)(struct ucred *cred,
struct mount *mp, struct label *mplabel,
struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel,
struct componentname *cnp);
typedef void (*mpo_vnode_destroy_label_t)(struct label *label);
typedef void (*mpo_vnode_execve_transition_t)(struct ucred *old,
struct ucred *new, struct vnode *vp,
struct label *vplabel, struct label *interpvplabel,
struct image_params *imgp, struct label *execlabel);
typedef int (*mpo_vnode_execve_will_transition_t)(struct ucred *old,
struct vnode *vp, struct label *vplabel,
struct label *interpvplabel, struct image_params *imgp,
struct label *execlabel);
typedef int (*mpo_vnode_externalize_label_t)(struct label *label,
char *element_name, struct sbuf *sb, int *claimed);
typedef void (*mpo_vnode_init_label_t)(struct label *label);
typedef int (*mpo_vnode_internalize_label_t)(struct label *label,
char *element_name, char *element_data, int *claimed);
typedef void (*mpo_vnode_relabel_t)(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct label *label);
typedef int (*mpo_vnode_setlabel_extattr_t)(struct ucred *cred,
struct vnode *vp, struct label *vplabel,
struct label *intlabel);
struct mac_policy_ops {
/*
* Policy module operations.
*/
mpo_destroy_t mpo_destroy;
mpo_init_t mpo_init;
/*
* General policy-directed security system call so that policies may
* implement new services without reserving explicit system call
* numbers.
*/
mpo_syscall_t mpo_syscall;
/*
* Label operations. Initialize label storage, destroy label
* storage, recycle for re-use without init/destroy, copy a label to
* initialized storage, and externalize/internalize from/to
* initialized storage.
*/
mpo_bpfdesc_check_receive_t mpo_bpfdesc_check_receive;
mpo_bpfdesc_create_t mpo_bpfdesc_create;
mpo_bpfdesc_create_mbuf_t mpo_bpfdesc_create_mbuf;
mpo_bpfdesc_destroy_label_t mpo_bpfdesc_destroy_label;
mpo_bpfdesc_init_label_t mpo_bpfdesc_init_label;
mpo_cred_check_relabel_t mpo_cred_check_relabel;
mpo_cred_check_visible_t mpo_cred_check_visible;
mpo_cred_copy_label_t mpo_cred_copy_label;
mpo_cred_destroy_label_t mpo_cred_destroy_label;
mpo_cred_externalize_label_t mpo_cred_externalize_label;
mpo_cred_init_label_t mpo_cred_init_label;
mpo_cred_internalize_label_t mpo_cred_internalize_label;
mpo_cred_relabel_t mpo_cred_relabel;
mpo_devfs_create_device_t mpo_devfs_create_device;
mpo_devfs_create_directory_t mpo_devfs_create_directory;
mpo_devfs_create_symlink_t mpo_devfs_create_symlink;
mpo_devfs_destroy_label_t mpo_devfs_destroy_label;
mpo_devfs_init_label_t mpo_devfs_init_label;
mpo_devfs_update_t mpo_devfs_update;
mpo_devfs_vnode_associate_t mpo_devfs_vnode_associate;
mpo_ifnet_check_relabel_t mpo_ifnet_check_relabel;
mpo_ifnet_check_transmit_t mpo_ifnet_check_transmit;
mpo_ifnet_copy_label_t mpo_ifnet_copy_label;
mpo_ifnet_create_t mpo_ifnet_create;
mpo_ifnet_create_mbuf_t mpo_ifnet_create_mbuf;
mpo_ifnet_destroy_label_t mpo_ifnet_destroy_label;
mpo_ifnet_externalize_label_t mpo_ifnet_externalize_label;
mpo_ifnet_init_label_t mpo_ifnet_init_label;
mpo_ifnet_internalize_label_t mpo_ifnet_internalize_label;
mpo_ifnet_relabel_t mpo_ifnet_relabel;
mpo_inpcb_check_deliver_t mpo_inpcb_check_deliver;
mpo_inpcb_create_t mpo_inpcb_create;
mpo_inpcb_create_mbuf_t mpo_inpcb_create_mbuf;
mpo_inpcb_destroy_label_t mpo_inpcb_destroy_label;
mpo_inpcb_init_label_t mpo_inpcb_init_label;
mpo_inpcb_sosetlabel_t mpo_inpcb_sosetlabel;
mpo_ipq_create_t mpo_ipq_create;
mpo_ipq_destroy_label_t mpo_ipq_destroy_label;
mpo_ipq_init_label_t mpo_ipq_init_label;
mpo_ipq_match_t mpo_ipq_match;
mpo_ipq_reassemble mpo_ipq_reassemble;
mpo_ipq_update_t mpo_ipq_update;
mpo_kenv_check_dump_t mpo_kenv_check_dump;
mpo_kenv_check_get_t mpo_kenv_check_get;
mpo_kenv_check_set_t mpo_kenv_check_set;
mpo_kenv_check_unset_t mpo_kenv_check_unset;
mpo_kld_check_load_t mpo_kld_check_load;
mpo_kld_check_stat_t mpo_kld_check_stat;
mpo_mbuf_copy_label_t mpo_mbuf_copy_label;
mpo_mbuf_create_linklayer_t mpo_mbuf_create_linklayer;
mpo_mbuf_create_multicast_encap_t mpo_mbuf_create_multicast_encap;
mpo_mbuf_create_netlayer_t mpo_mbuf_create_netlayer;
mpo_mbuf_destroy_label_t mpo_mbuf_destroy_label;
mpo_mbuf_init_label_t mpo_mbuf_init_label;
mpo_mount_check_stat_t mpo_mount_check_stat;
mpo_mount_create_t mpo_mount_create;
mpo_mount_destroy_label_t mpo_mount_destroy_label;
mpo_mount_init_label_t mpo_mount_init_label;
mpo_netinet_firewall_send_t mpo_netinet_firewall_send;
mpo_netinet_fragment_t mpo_netinet_fragment;
mpo_netinet_icmp_reply_t mpo_netinet_icmp_reply;
mpo_netinet_tcp_reply_t mpo_netinet_tcp_reply;
mpo_pipe_check_ioctl_t mpo_pipe_check_ioctl;
mpo_pipe_check_poll_t mpo_pipe_check_poll;
mpo_pipe_check_read_t mpo_pipe_check_read;
mpo_pipe_check_relabel_t mpo_pipe_check_relabel;
mpo_pipe_check_stat_t mpo_pipe_check_stat;
mpo_pipe_check_write_t mpo_pipe_check_write;
mpo_pipe_copy_label_t mpo_pipe_copy_label;
mpo_pipe_create_t mpo_pipe_create;
mpo_pipe_destroy_label_t mpo_pipe_destroy_label;
mpo_pipe_externalize_label_t mpo_pipe_externalize_label;
mpo_pipe_init_label_t mpo_pipe_init_label;
mpo_pipe_internalize_label_t mpo_pipe_internalize_label;
mpo_pipe_relabel_t mpo_pipe_relabel;
mpo_posixsem_check_destroy_t mpo_posixsem_check_destroy;
mpo_posixsem_check_getvalue_t mpo_posixsem_check_getvalue;
mpo_posixsem_check_open_t mpo_posixsem_check_open;
mpo_posixsem_check_post_t mpo_posixsem_check_post;
mpo_posixsem_check_unlink_t mpo_posixsem_check_unlink;
mpo_posixsem_check_wait_t mpo_posixsem_check_wait;
mpo_posixsem_create_t mpo_posixsem_create;
mpo_posixsem_destroy_label_t mpo_posixsem_destroy_label;
mpo_posixsem_init_label_t mpo_posixsem_init_label;
mpo_priv_check_t mpo_priv_check;
mpo_priv_grant_t mpo_priv_grant;
mpo_proc_associate_nfsd_t mpo_proc_associate_nfsd;
mpo_proc_check_debug_t mpo_proc_check_debug;
mpo_proc_check_sched_t mpo_proc_check_sched;
mpo_proc_check_setaudit_t mpo_proc_check_setaudit;
mpo_proc_check_setaudit_addr_t mpo_proc_check_setaudit_addr;
mpo_proc_check_setauid_t mpo_proc_check_setauid;
mpo_proc_check_setuid_t mpo_proc_check_setuid;
mpo_proc_check_seteuid_t mpo_proc_check_seteuid;
mpo_proc_check_setgid_t mpo_proc_check_setgid;
mpo_proc_check_setegid_t mpo_proc_check_setegid;
mpo_proc_check_setgroups_t mpo_proc_check_setgroups;
mpo_proc_check_setreuid_t mpo_proc_check_setreuid;
mpo_proc_check_setregid_t mpo_proc_check_setregid;
mpo_proc_check_setresuid_t mpo_proc_check_setresuid;
mpo_proc_check_setresgid_t mpo_proc_check_setresgid;
mpo_proc_check_signal_t mpo_proc_check_signal;
mpo_proc_check_wait_t mpo_proc_check_wait;
mpo_proc_create_swapper_t mpo_proc_create_swapper;
mpo_proc_create_init_t mpo_proc_create_init;
mpo_proc_destroy_label_t mpo_proc_destroy_label;
mpo_proc_init_label_t mpo_proc_init_label;
mpo_socket_check_accept_t mpo_socket_check_accept;
mpo_socket_check_bind_t mpo_socket_check_bind;
mpo_socket_check_connect_t mpo_socket_check_connect;
mpo_socket_check_create_t mpo_socket_check_create;
mpo_socket_check_deliver_t mpo_socket_check_deliver;
mpo_socket_check_listen_t mpo_socket_check_listen;
mpo_socket_check_poll_t mpo_socket_check_poll;
mpo_socket_check_receive_t mpo_socket_check_receive;
mpo_socket_check_relabel_t mpo_socket_check_relabel;
mpo_socket_check_send_t mpo_socket_check_send;
mpo_socket_check_stat_t mpo_socket_check_stat;
mpo_socket_check_visible_t mpo_socket_check_visible;
mpo_socket_copy_label_t mpo_socket_copy_label;
mpo_socket_create_t mpo_socket_create;
mpo_socket_create_mbuf_t mpo_socket_create_mbuf;
mpo_socket_destroy_label_t mpo_socket_destroy_label;
mpo_socket_externalize_label_t mpo_socket_externalize_label;
mpo_socket_init_label_t mpo_socket_init_label;
mpo_socket_internalize_label_t mpo_socket_internalize_label;
mpo_socket_newconn_t mpo_socket_newconn;
mpo_socket_relabel_t mpo_socket_relabel;
mpo_socketpeer_destroy_label_t mpo_socketpeer_destroy_label;
mpo_socketpeer_externalize_label_t mpo_socketpeer_externalize_label;
mpo_socketpeer_init_label_t mpo_socketpeer_init_label;
mpo_socketpeer_set_from_mbuf_t mpo_socketpeer_set_from_mbuf;
mpo_socketpeer_set_from_socket_t mpo_socketpeer_set_from_socket;
mpo_syncache_init_label_t mpo_syncache_init_label;
mpo_syncache_destroy_label_t mpo_syncache_destroy_label;
mpo_syncache_create_t mpo_syncache_create;
mpo_syncache_create_mbuf_t mpo_syncache_create_mbuf;
mpo_system_check_acct_t mpo_system_check_acct;
mpo_system_check_audit_t mpo_system_check_audit;
mpo_system_check_auditctl_t mpo_system_check_auditctl;
mpo_system_check_auditon_t mpo_system_check_auditon;
mpo_system_check_reboot_t mpo_system_check_reboot;
mpo_system_check_swapon_t mpo_system_check_swapon;
mpo_system_check_swapoff_t mpo_system_check_swapoff;
mpo_system_check_sysctl_t mpo_system_check_sysctl;
mpo_sysvmsg_cleanup_t mpo_sysvmsg_cleanup;
mpo_sysvmsg_create_t mpo_sysvmsg_create;
mpo_sysvmsg_destroy_label_t mpo_sysvmsg_destroy_label;
mpo_sysvmsg_init_label_t mpo_sysvmsg_init_label;
mpo_sysvmsq_check_msgmsq_t mpo_sysvmsq_check_msgmsq;
mpo_sysvmsq_check_msgrcv_t mpo_sysvmsq_check_msgrcv;
mpo_sysvmsq_check_msgrmid_t mpo_sysvmsq_check_msgrmid;
mpo_sysvmsq_check_msqctl_t mpo_sysvmsq_check_msqctl;
mpo_sysvmsq_check_msqget_t mpo_sysvmsq_check_msqget;
mpo_sysvmsq_check_msqrcv_t mpo_sysvmsq_check_msqrcv;
mpo_sysvmsq_check_msqsnd_t mpo_sysvmsq_check_msqsnd;
mpo_sysvmsq_cleanup_t mpo_sysvmsq_cleanup;
mpo_sysvmsq_create_t mpo_sysvmsq_create;
mpo_sysvmsq_destroy_label_t mpo_sysvmsq_destroy_label;
mpo_sysvmsq_init_label_t mpo_sysvmsq_init_label;
mpo_sysvsem_check_semctl_t mpo_sysvsem_check_semctl;
mpo_sysvsem_check_semget_t mpo_sysvsem_check_semget;
mpo_sysvsem_check_semop_t mpo_sysvsem_check_semop;
mpo_sysvsem_cleanup_t mpo_sysvsem_cleanup;
mpo_sysvsem_create_t mpo_sysvsem_create;
mpo_sysvsem_destroy_label_t mpo_sysvsem_destroy_label;
mpo_sysvsem_init_label_t mpo_sysvsem_init_label;
mpo_sysvshm_check_shmat_t mpo_sysvshm_check_shmat;
mpo_sysvshm_check_shmctl_t mpo_sysvshm_check_shmctl;
mpo_sysvshm_check_shmdt_t mpo_sysvshm_check_shmdt;
mpo_sysvshm_check_shmget_t mpo_sysvshm_check_shmget;
mpo_sysvshm_cleanup_t mpo_sysvshm_cleanup;
mpo_sysvshm_create_t mpo_sysvshm_create;
mpo_sysvshm_destroy_label_t mpo_sysvshm_destroy_label;
mpo_sysvshm_init_label_t mpo_sysvshm_init_label;
mpo_thread_userret_t mpo_thread_userret;
mpo_vnode_check_access_t mpo_vnode_check_access;
mpo_vnode_check_chdir_t mpo_vnode_check_chdir;
mpo_vnode_check_chroot_t mpo_vnode_check_chroot;
mpo_vnode_check_create_t mpo_vnode_check_create;
mpo_vnode_check_deleteacl_t mpo_vnode_check_deleteacl;
mpo_vnode_check_deleteextattr_t mpo_vnode_check_deleteextattr;
mpo_vnode_check_exec_t mpo_vnode_check_exec;
mpo_vnode_check_getacl_t mpo_vnode_check_getacl;
mpo_vnode_check_getextattr_t mpo_vnode_check_getextattr;
mpo_vnode_check_link_t mpo_vnode_check_link;
mpo_vnode_check_listextattr_t mpo_vnode_check_listextattr;
mpo_vnode_check_lookup_t mpo_vnode_check_lookup;
mpo_vnode_check_mmap_t mpo_vnode_check_mmap;
mpo_vnode_check_mmap_downgrade_t mpo_vnode_check_mmap_downgrade;
mpo_vnode_check_mprotect_t mpo_vnode_check_mprotect;
mpo_vnode_check_open_t mpo_vnode_check_open;
mpo_vnode_check_poll_t mpo_vnode_check_poll;
mpo_vnode_check_read_t mpo_vnode_check_read;
mpo_vnode_check_readdir_t mpo_vnode_check_readdir;
mpo_vnode_check_readlink_t mpo_vnode_check_readlink;
mpo_vnode_check_relabel_t mpo_vnode_check_relabel;
mpo_vnode_check_rename_from_t mpo_vnode_check_rename_from;
mpo_vnode_check_rename_to_t mpo_vnode_check_rename_to;
mpo_vnode_check_revoke_t mpo_vnode_check_revoke;
mpo_vnode_check_setacl_t mpo_vnode_check_setacl;
mpo_vnode_check_setextattr_t mpo_vnode_check_setextattr;
mpo_vnode_check_setflags_t mpo_vnode_check_setflags;
mpo_vnode_check_setmode_t mpo_vnode_check_setmode;
mpo_vnode_check_setowner_t mpo_vnode_check_setowner;
mpo_vnode_check_setutimes_t mpo_vnode_check_setutimes;
mpo_vnode_check_stat_t mpo_vnode_check_stat;
mpo_vnode_check_unlink_t mpo_vnode_check_unlink;
mpo_vnode_check_write_t mpo_vnode_check_write;
mpo_vnode_associate_extattr_t mpo_vnode_associate_extattr;
mpo_vnode_associate_singlelabel_t mpo_vnode_associate_singlelabel;
mpo_vnode_destroy_label_t mpo_vnode_destroy_label;
mpo_vnode_copy_label_t mpo_vnode_copy_label;
mpo_vnode_create_extattr_t mpo_vnode_create_extattr;
mpo_vnode_execve_transition_t mpo_vnode_execve_transition;
mpo_vnode_execve_will_transition_t mpo_vnode_execve_will_transition;
mpo_vnode_externalize_label_t mpo_vnode_externalize_label;
mpo_vnode_init_label_t mpo_vnode_init_label;
mpo_vnode_internalize_label_t mpo_vnode_internalize_label;
mpo_vnode_relabel_t mpo_vnode_relabel;
mpo_vnode_setlabel_extattr_t mpo_vnode_setlabel_extattr;
};
/*
* struct mac_policy_conf is the registration structure for policies, and is
* provided to the MAC Framework using MAC_POLICY_SET() to invoke a SYSINIT
* to register the policy. In general, the fields are immutable, with the
* exception of the "security field", run-time flags, and policy list entry,
* which are managed by the MAC Framework. Be careful when modifying this
* structure, as its layout is statically compiled into all policies.
*/
struct mac_policy_conf {
char *mpc_name; /* policy name */
char *mpc_fullname; /* policy full name */
struct mac_policy_ops *mpc_ops; /* policy operations */
int mpc_loadtime_flags; /* flags */
int *mpc_field_off; /* security field */
int mpc_runtime_flags; /* flags */
LIST_ENTRY(mac_policy_conf) mpc_list; /* global list */
};
/* Flags for the mpc_loadtime_flags field. */
#define MPC_LOADTIME_FLAG_NOTLATE 0x00000001
#define MPC_LOADTIME_FLAG_UNLOADOK 0x00000002
Move MAC label storage for mbufs into m_tags from the m_pkthdr structure, returning some additional room in the first mbuf in a chain, and avoiding feature-specific contents in the mbuf header. To do this: - Modify mbuf_to_label() to extract the tag, returning NULL if not found. - Introduce mac_init_mbuf_tag() which does most of the work mac_init_mbuf() used to do, except on an m_tag rather than an mbuf. - Scale back mac_init_mbuf() to perform m_tag allocation and invoke mac_init_mbuf_tag(). - Replace mac_destroy_mbuf() with mac_destroy_mbuf_tag(), since m_tag's are now GC'd deep in the m_tag/mbuf code rather than at a higher level when mbufs are directly free()'d. - Add mac_copy_mbuf_tag() to support m_copy_pkthdr() and related notions. - Generally change all references to mbuf labels so that they use mbuf_to_label() rather than &mbuf->m_pkthdr.label. This required no changes in the MAC policies (yay!). - Tweak mbuf release routines to not call mac_destroy_mbuf(), tag destruction takes care of it for us now. - Remove MAC magic from m_copy_pkthdr() and m_move_pkthdr() -- the existing m_tag support does all this for us. Note that we can no longer just zero the m_tag list on the target mbuf, rather, we have to delete the chain because m_tag's will already be hung off freshly allocated mbuf's. - Tweak m_tag copying routines so that if we're copying a MAC m_tag, we don't do a binary copy, rather, we initialize the new storage and do a deep copy of the label. - Remove use of MAC_FLAG_INITIALIZED in a few bizarre places having to do with mbuf header copies previously. - When an mbuf is copied in ip_input(), we no longer need to explicitly copy the label because it will get handled by the m_tag code now. - No longer any weird handling of MAC labels in if_loop.c during header copies. - Add MPC_LOADTIME_FLAG_LABELMBUFS flag to Biba, MLS, mac_test. In mac_test, handle the label==NULL case, since it can be dynamically loaded. In order to improve performance with this change, introduce the notion of "lazy MAC label allocation" -- only allocate m_tag storage for MAC labels if we're running with a policy that uses MAC labels on mbufs. Policies declare this intent by setting the MPC_LOADTIME_FLAG_LABELMBUFS flag in their load-time flags field during declaration. Note: this opens up the possibility of post-boot policy modules getting back NULL slot entries even though they have policy invariants of non-NULL slot entries, as the policy might have been loaded after the mbuf was allocated, leaving the mbuf without label storage. Policies that cannot handle this case must be declared as NOTLATE, or must be modified. - mac_labelmbufs holds the current cumulative status as to whether any policies require mbuf labeling or not. This is updated whenever the active policy set changes by the function mac_policy_updateflags(). The function iterates the list and checks whether any have the flag set. Write access to this variable is protected by the policy list; read access is currently not protected for performance reasons. This might change if it causes problems. - Add MAC_POLICY_LIST_ASSERT_EXCLUSIVE() to permit the flags update function to assert appropriate locks. - This makes allocation in mac_init_mbuf() conditional on the flag. Reviewed by: sam Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
2003-04-14 20:39:06 +00:00
#define MPC_LOADTIME_FLAG_LABELMBUFS 0x00000004
/* Flags for the mpc_runtime_flags field. */
#define MPC_RUNTIME_FLAG_REGISTERED 0x00000001
/*-
* The TrustedBSD MAC Framework has a major version number, MAC_VERSION,
* which defines the ABI of the Framework present in the kernel (and depended
* on by policy modules compiled against that kernel). Currently,
* MAC_POLICY_SET() requires that the kernel and module ABI version numbers
* exactly match. The following major versions have been defined to date:
*
* MAC version FreeBSD versions
* 1 5.x
* 2 6.x
* 3 7.x
* 4 8.x
*/
#define MAC_VERSION 4
#define MAC_POLICY_SET(mpops, mpname, mpfullname, mpflags, privdata_wanted) \
static struct mac_policy_conf mpname##_mac_policy_conf = { \
#mpname, \
mpfullname, \
mpops, \
mpflags, \
privdata_wanted, \
0, \
}; \
static moduledata_t mpname##_mod = { \
#mpname, \
mac_policy_modevent, \
&mpname##_mac_policy_conf \
}; \
MODULE_DEPEND(mpname, kernel_mac_support, MAC_VERSION, \
MAC_VERSION, MAC_VERSION); \
DECLARE_MODULE(mpname, mpname##_mod, SI_SUB_MAC_POLICY, \
SI_ORDER_MIDDLE)
int mac_policy_modevent(module_t mod, int type, void *data);
/*
* Policy interface to map a struct label pointer to per-policy data.
* Typically, policies wrap this in their own accessor macro that casts a
* uintptr_t to a policy-specific data type.
*/
intptr_t mac_label_get(struct label *l, int slot);
void mac_label_set(struct label *l, int slot, intptr_t v);
#endif /* !_SYS_SECURITY_MAC_MAC_POLICY_H_ */