/*-
 * Copyright (c) 1999-2002, 2007-2011 Robert N. M. Watson
 * Copyright (c) 2001-2005 Networks Associates Technology, Inc.
 * Copyright (c) 2005-2006 SPARTA, Inc.
 * Copyright (c) 2008 Apple 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.
 *
 * This software was enhanced by SPARTA ISSO under SPAWAR contract 
 * N66001-04-C-6019 ("SEFOS").
 *
 * This software was developed at the University of Cambridge Computer
 * Laboratory with support from a grant from Google, Inc.
 *
 * 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.
 */
/*
 * Kernel interface for MAC policy modules.
 */
#ifndef _SECURITY_MAC_MAC_POLICY_H_
#define _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 */
#include <sys/types.h>  /* XXX accmode_t */

#include <ddb/ddb.h>    /* XXX db_expr_t */

struct acl;
struct auditinfo;
struct auditinfo_addr;
struct bpf_d;
struct cdev;
struct componentname;
struct db_command;
struct devfs_dirent;
struct ifnet;
struct image_params;
struct inpcb;
struct ip6q;
struct ipq;
struct kdb_dbbe;
struct ksem;
struct label;
struct mac_policy_conf;
struct mbuf;
struct mount;
struct msg;
struct msqid_kernel;
struct pipepair;
struct prison;
struct proc;
struct sbuf;
struct semid_kernel;
struct shmfd;
struct shmid_kernel;
struct sockaddr;
struct socket;
struct sysctl_oid;
struct sysctl_req;
struct thread;
struct ucred;
struct vattr;
struct vfsoptlist;
struct vnode;

struct in_addr;
struct in6_addr;

/*
 * 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 void    (*mpo_cred_associate_nfsd_t)(struct ucred *cred);
typedef int     (*mpo_cred_check_relabel_t)(struct ucred *cred,
                    struct label *newlabel);
typedef int     (*mpo_cred_check_setaudit_t)(struct ucred *cred,
                    struct auditinfo *ai);
typedef int     (*mpo_cred_check_setaudit_addr_t)(struct ucred *cred,
                    struct auditinfo_addr *aia);
typedef int     (*mpo_cred_check_setauid_t)(struct ucred *cred, uid_t auid);
typedef void    (*mpo_cred_setcred_enter_t)(void);
typedef int     (*mpo_cred_check_setcred_t)(u_int flags,
                    const struct ucred *old_cred, struct ucred *new_cred);
typedef void    (*mpo_cred_setcred_exit_t)(void);
typedef int     (*mpo_cred_check_setegid_t)(struct ucred *cred, gid_t egid);
typedef int     (*mpo_cred_check_seteuid_t)(struct ucred *cred, uid_t euid);
typedef int     (*mpo_cred_check_setgid_t)(struct ucred *cred, gid_t gid);
typedef int     (*mpo_cred_check_setgroups_t)(struct ucred *cred, int ngroups,
                    gid_t *gidset);
typedef int     (*mpo_cred_check_setregid_t)(struct ucred *cred, gid_t rgid,
                    gid_t egid);
typedef int     (*mpo_cred_check_setresgid_t)(struct ucred *cred, gid_t rgid,
                    gid_t egid, gid_t sgid);
typedef int     (*mpo_cred_check_setresuid_t)(struct ucred *cred, uid_t ruid,
                    uid_t euid, uid_t suid);
typedef int     (*mpo_cred_check_setreuid_t)(struct ucred *cred, uid_t ruid,
                    uid_t euid);
typedef int     (*mpo_cred_check_setuid_t)(struct ucred *cred, uid_t uid);
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_create_init_t)(struct ucred *cred);
typedef void    (*mpo_cred_create_kproc0_t)(struct ucred *cred);
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 int     (*mpo_ddb_command_register_t)(struct db_command_table *table,
                    struct db_command *cmd);
typedef int     (*mpo_ddb_command_exec_t)(struct db_command *cmd,
                    db_expr_t addr, bool have_addr, db_expr_t count,
                    char *modif);

typedef void    (*mpo_devfs_create_device_t)(struct ucred *cred,
                    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 int     (*mpo_inpcb_check_visible_t)(struct ucred *cred,
                    struct inpcb *inp, struct label *inplabel);
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_ip6q_create_t)(struct mbuf *m, struct label *mlabel,
                    struct ip6q *q6, struct label *q6label);
typedef void    (*mpo_ip6q_destroy_label_t)(struct label *label);
typedef int     (*mpo_ip6q_init_label_t)(struct label *label, int flag);
typedef int     (*mpo_ip6q_match_t)(struct mbuf *m, struct label *mlabel,
                    struct ip6q *q6, struct label *q6label);
typedef void    (*mpo_ip6q_reassemble)(struct ip6q *q6, struct label *q6label,
                    struct mbuf *m, struct label *mlabel);
typedef void    (*mpo_ip6q_update_t)(struct mbuf *m, struct label *mlabel,
                    struct ip6q *q6, struct label *q6label);

/* Policy ops checking IPv4 and IPv6 address for ipacl. */
typedef int     (*mpo_ip4_check_jail_t)(struct ucred *cred,
                    const struct in_addr *ia, struct ifnet *ifp);
typedef int     (*mpo_ip6_check_jail_t)(struct ucred *cred,
                    const struct in6_addr *ia6, struct ifnet *ifp);

typedef void    (*mpo_ipq_create_t)(struct mbuf *m, struct label *mlabel,
                    struct ipq *q, struct label *qlabel);
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 *q, struct label *qlabel);
typedef void    (*mpo_ipq_reassemble)(struct ipq *q, struct label *qlabel,
                    struct mbuf *m, struct label *mlabel);
typedef void    (*mpo_ipq_update_t)(struct mbuf *m, struct label *mlabel,
                    struct ipq *q, struct label *qlabel);

typedef int     (*mpo_kdb_check_backend_t)(struct kdb_dbbe *be);

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_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_arp_send_t)(struct ifnet *ifp,
                    struct label *ifplabel, struct mbuf *m,
                    struct label *mlabel);
typedef void    (*mpo_netinet_firewall_reply_t)(struct mbuf *mrecv,
                    struct label *mrecvlabel, struct mbuf *msend,
                    struct label *msendlabel);
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 *mrecv,
                    struct label *mrecvlabel, struct mbuf *msend,
                    struct label *msendlabel);
typedef void    (*mpo_netinet_icmp_replyinplace_t)(struct mbuf *m,
                    struct label *mlabel);
typedef void    (*mpo_netinet_igmp_send_t)(struct ifnet *ifp,
                    struct label *ifplabel, struct mbuf *m,
                    struct label *mlabel);
typedef void    (*mpo_netinet_tcp_reply_t)(struct mbuf *m,
                    struct label *mlabel);

typedef void    (*mpo_netinet6_nd6_send_t)(struct ifnet *ifp,
                    struct label *ifplabel, 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_getvalue_t)(struct ucred *active_cred,
                    struct ucred *file_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 *active_cred,
                    struct ucred *file_cred, struct ksem *ks,
                    struct label *kslabel);
typedef int     (*mpo_posixsem_check_setmode_t)(struct ucred *cred,
                    struct ksem *ks, struct label *shmlabel,
                    mode_t mode);
typedef int     (*mpo_posixsem_check_setowner_t)(struct ucred *cred,
                    struct ksem *ks, struct label *shmlabel,
                    uid_t uid, gid_t gid);
typedef int     (*mpo_posixsem_check_stat_t)(struct ucred *active_cred,
                    struct ucred *file_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 *active_cred,
                    struct ucred *file_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_posixshm_check_create_t)(struct ucred *cred,
                    const char *path);
typedef int     (*mpo_posixshm_check_mmap_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel, int prot,
                    int flags);
typedef int     (*mpo_posixshm_check_open_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel,
                    accmode_t accmode);
typedef int     (*mpo_posixshm_check_read_t)(struct ucred *active_cred,
                    struct ucred *file_cred, struct shmfd *shmfd,
                    struct label *shmlabel);
typedef int     (*mpo_posixshm_check_setmode_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel,
                    mode_t mode);
typedef int     (*mpo_posixshm_check_setowner_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel,
                    uid_t uid, gid_t gid);
typedef int     (*mpo_posixshm_check_stat_t)(struct ucred *active_cred,
                    struct ucred *file_cred, struct shmfd *shmfd,
                    struct label *shmlabel);
typedef int     (*mpo_posixshm_check_truncate_t)(struct ucred *active_cred,
                    struct ucred *file_cred, struct shmfd *shmfd,
                    struct label *shmlabel);
typedef int     (*mpo_posixshm_check_unlink_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel);
typedef int     (*mpo_posixshm_check_write_t)(struct ucred *active_cred,
                    struct ucred *file_cred, struct shmfd *shmfd,
                    struct label *shmlabel);
typedef void    (*mpo_posixshm_create_t)(struct ucred *cred,
                    struct shmfd *shmfd, struct label *shmlabel);
typedef void    (*mpo_posixshm_destroy_label_t)(struct label *label);
typedef void    (*mpo_posixshm_init_label_t)(struct label *label);

typedef int     (*mpo_prison_init_label_t)(struct label *label, int flag);
typedef int     (*mpo_prison_check_relabel_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel,
                    struct label *newlabel);
typedef void    (*mpo_prison_destroy_label_t)(struct label *label);
typedef void    (*mpo_prison_copy_label_t)(struct label *src,
                    struct label *dest);
typedef int     (*mpo_prison_externalize_label_t)(struct label *label,
                    char *element_name, struct sbuf *sb, int *claimed);
typedef int     (*mpo_prison_internalize_label_t)(struct label *label,
                    char *element_name, char *element_data, int *claimed);
typedef void    (*mpo_prison_relabel_t)(struct ucred *cred, struct prison *pr,
                    struct label *prlabel, struct label *newlabel);
typedef int     (*mpo_prison_check_attach_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel);
typedef int     (*mpo_prison_check_create_t)(struct ucred *cred,
                    struct vfsoptlist *opts, int flags);
typedef int     (*mpo_prison_check_get_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel,
                    struct vfsoptlist *opts, int flags);
typedef int     (*mpo_prison_check_set_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel,
                    struct vfsoptlist *opts, int flags);
typedef int     (*mpo_prison_check_remove_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel);
typedef void    (*mpo_prison_created_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel);
typedef void    (*mpo_prison_cleanup_t)(struct ucred *cred,
                    struct prison *pr);
typedef void    (*mpo_prison_attached_t)(struct ucred *cred,
                    struct prison *pr, struct label *prlabel, struct proc *p,
                    struct label *proclabel);

typedef int     (*mpo_priv_check_t)(struct ucred *cred, int priv);
typedef int     (*mpo_priv_grant_t)(struct ucred *cred, int priv);

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_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_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,
                    accmode_t accmode);
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);
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,
                    accmode_t accmode);
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);
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_associate_nfsd_t               mpo_cred_associate_nfsd;
        mpo_cred_check_relabel_t                mpo_cred_check_relabel;
        mpo_cred_check_setaudit_t               mpo_cred_check_setaudit;
        mpo_cred_check_setaudit_addr_t          mpo_cred_check_setaudit_addr;
        mpo_cred_check_setauid_t                mpo_cred_check_setauid;
        mpo_cred_setcred_enter_t                mpo_cred_setcred_enter;
        mpo_cred_check_setcred_t                mpo_cred_check_setcred;
        mpo_cred_setcred_exit_t                 mpo_cred_setcred_exit;
        mpo_cred_check_setuid_t                 mpo_cred_check_setuid;
        mpo_cred_check_seteuid_t                mpo_cred_check_seteuid;
        mpo_cred_check_setgid_t                 mpo_cred_check_setgid;
        mpo_cred_check_setegid_t                mpo_cred_check_setegid;
        mpo_cred_check_setgroups_t              mpo_cred_check_setgroups;
        mpo_cred_check_setreuid_t               mpo_cred_check_setreuid;
        mpo_cred_check_setregid_t               mpo_cred_check_setregid;
        mpo_cred_check_setresuid_t              mpo_cred_check_setresuid;
        mpo_cred_check_setresgid_t              mpo_cred_check_setresgid;
        mpo_cred_check_visible_t                mpo_cred_check_visible;
        mpo_cred_copy_label_t                   mpo_cred_copy_label;
        mpo_cred_create_kproc0_t                mpo_cred_create_kproc0;
        mpo_cred_create_init_t                  mpo_cred_create_init;
        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_ddb_command_register_t              mpo_ddb_command_register;
        mpo_ddb_command_exec_t                  mpo_ddb_command_exec;

        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_check_visible_t               mpo_inpcb_check_visible;
        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_ip4_check_jail_t                    mpo_ip4_check_jail;
        mpo_ip6_check_jail_t                    mpo_ip6_check_jail;

        mpo_ip6q_create_t                       mpo_ip6q_create;
        mpo_ip6q_destroy_label_t                mpo_ip6q_destroy_label;
        mpo_ip6q_init_label_t                   mpo_ip6q_init_label;
        mpo_ip6q_match_t                        mpo_ip6q_match;
        mpo_ip6q_reassemble                     mpo_ip6q_reassemble;
        mpo_ip6q_update_t                       mpo_ip6q_update;

        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_kdb_check_backend_t                 mpo_kdb_check_backend;

        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_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_arp_send_t                  mpo_netinet_arp_send;
        mpo_netinet_firewall_reply_t            mpo_netinet_firewall_reply;
        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_icmp_replyinplace_t         mpo_netinet_icmp_replyinplace;
        mpo_netinet_igmp_send_t                 mpo_netinet_igmp_send;
        mpo_netinet_tcp_reply_t                 mpo_netinet_tcp_reply;

        mpo_netinet6_nd6_send_t                 mpo_netinet6_nd6_send;

        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_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_setmode_t            mpo_posixsem_check_setmode;
        mpo_posixsem_check_setowner_t           mpo_posixsem_check_setowner;
        mpo_posixsem_check_stat_t               mpo_posixsem_check_stat;
        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_posixshm_check_create_t             mpo_posixshm_check_create;
        mpo_posixshm_check_mmap_t               mpo_posixshm_check_mmap;
        mpo_posixshm_check_open_t               mpo_posixshm_check_open;
        mpo_posixshm_check_read_t               mpo_posixshm_check_read;
        mpo_posixshm_check_setmode_t            mpo_posixshm_check_setmode;
        mpo_posixshm_check_setowner_t           mpo_posixshm_check_setowner;
        mpo_posixshm_check_stat_t               mpo_posixshm_check_stat;
        mpo_posixshm_check_truncate_t           mpo_posixshm_check_truncate;
        mpo_posixshm_check_unlink_t             mpo_posixshm_check_unlink;
        mpo_posixshm_check_write_t              mpo_posixshm_check_write;
        mpo_posixshm_create_t                   mpo_posixshm_create;
        mpo_posixshm_destroy_label_t            mpo_posixshm_destroy_label;
        mpo_posixshm_init_label_t               mpo_posixshm_init_label;

        mpo_prison_init_label_t                 mpo_prison_init_label;
        mpo_prison_check_relabel_t              mpo_prison_check_relabel;
        mpo_prison_destroy_label_t              mpo_prison_destroy_label;
        mpo_prison_copy_label_t                 mpo_prison_copy_label;
        mpo_prison_externalize_label_t          mpo_prison_externalize_label;
        mpo_prison_internalize_label_t          mpo_prison_internalize_label;
        mpo_prison_relabel_t                    mpo_prison_relabel;
        mpo_prison_check_attach_t               mpo_prison_check_attach;
        mpo_prison_check_create_t               mpo_prison_check_create;
        mpo_prison_check_get_t                  mpo_prison_check_get;
        mpo_prison_check_set_t                  mpo_prison_check_set;
        mpo_prison_check_remove_t               mpo_prison_check_remove;
        mpo_prison_created_t                    mpo_prison_created;
        mpo_prison_cleanup_t                    mpo_prison_cleanup;
        mpo_prison_attached_t                   mpo_prison_attached;

        mpo_priv_check_t                        mpo_priv_check;
        mpo_priv_grant_t                        mpo_priv_grant;

        mpo_proc_check_debug_t                  mpo_proc_check_debug;
        mpo_proc_check_sched_t                  mpo_proc_check_sched;
        mpo_proc_check_signal_t                 mpo_proc_check_signal;
        mpo_proc_check_wait_t                   mpo_proc_check_wait;
        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 */
        int                              _mpc_spare1;   /* Spare. */
        uint64_t                         _mpc_spare2;   /* Spare. */
        uint64_t                         _mpc_spare3;   /* Spare. */
        void                            *_mpc_spare4;   /* Spare. */
        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

/* 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
 *   5                       14.x
 *   6                       15.x
 */
#define MAC_VERSION     6

#define MAC_POLICY_SET(mpops, mpname, mpfullname, mpflags, privdata_wanted) \
        static struct mac_policy_conf mpname##_mac_policy_conf = {      \
                .mpc_name = #mpname,                                    \
                .mpc_fullname = mpfullname,                             \
                .mpc_ops = mpops,                                       \
                .mpc_loadtime_flags = mpflags,                          \
                .mpc_field_off = privdata_wanted,                       \
        };                                                              \
        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);

/*
 * Common MAC Framework's sysctl and jail parameters' sysctl nodes' declarations.
 *
 * Headers <sys/jail.h> and <sys/sysctl.h> normally have to be included before
 * this header as style(9) hints to.  If they weren't, just forego the
 * corresponding declarations, assuming they are not needed.
 */
#ifdef SYSCTL_DECL
SYSCTL_DECL(_security_mac);
#endif

#ifdef SYSCTL_JAIL_PARAM_DECL
SYSCTL_JAIL_PARAM_DECL(mac);
#endif

#endif /* !_SECURITY_MAC_MAC_POLICY_H_ */