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freebsd-dev/sys/security/mac_stub/mac_stub.c
Robert Watson 3de4046939 Continue work to optimize performance of "options MAC" when no MAC policy 
modules are loaded by avoiding mbuf label lookups when policies aren't
loaded, pushing further socket locking into MAC policy modules, and
avoiding locking MAC ifnet locks when no policies are loaded:

- Check mac_policies_count before looking for mbuf MAC label m_tags in MAC
  Framework entry points.  We will still pay label lookup costs if MAC
  policies are present but don't require labels (typically a single mbuf
  header field read, but perhaps further indirection if IPSEC or other
  m_tag consumers are in use).

- Further push socket locking for socket-related access control checks and
  events into MAC policies from the MAC Framework, so that sockets are
  only locked if a policy specifically requires a lock to protect a label.
  This resolves lock order issues during sonewconn() and also in local
  domain socket cross-connect where multiple socket locks could not be
  held at once for the purposes of propagatig MAC labels across multiple
  sockets.  Eliminate mac_policy_count check in some entry points where it
  no longer avoids locking.

- Add mac_policy_count checking in some entry points relating to network
  interfaces that otherwise lock a global MAC ifnet lock used to protect
  ifnet labels.

Obtained from:	TrustedBSD Project
2009-06-03 18:46:28 +00:00

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/*-
* Copyright (c) 1999-2002, 2007-2009 Robert N. M. Watson
* Copyright (c) 2001-2005 McAfee, 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 McAfee
* Research, the Security Research Division of McAfee, 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.
*
* $FreeBSD$
*/
/*
* Developed by the TrustedBSD Project.
*
* Stub module that implements a NOOP for most (if not all) MAC Framework
* policy entry points.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/acl.h>
#include <sys/conf.h>
#include <sys/extattr.h>
#include <sys/kernel.h>
#include <sys/ksem.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/sysent.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/pipe.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <fs/devfs/devfs.h>
#include <net/bpfdesc.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet/ip_var.h>
#include <vm/vm.h>
#include <security/mac/mac_policy.h>
SYSCTL_DECL(_security_mac);
SYSCTL_NODE(_security_mac, OID_AUTO, stub, CTLFLAG_RW, 0,
"TrustedBSD mac_stub policy controls");
static int stub_enabled = 1;
SYSCTL_INT(_security_mac_stub, OID_AUTO, enabled, CTLFLAG_RW,
&stub_enabled, 0, "Enforce mac_stub policy");
/*
* Policy module operations.
*/
static void
stub_destroy(struct mac_policy_conf *conf)
{
}
static void
stub_init(struct mac_policy_conf *conf)
{
}
static int
stub_syscall(struct thread *td, int call, void *arg)
{
return (0);
}
/*
* Label operations.
*/
static void
stub_init_label(struct label *label)
{
}
static int
stub_init_label_waitcheck(struct label *label, int flag)
{
return (0);
}
static void
stub_destroy_label(struct label *label)
{
}
static void
stub_copy_label(struct label *src, struct label *dest)
{
}
static int
stub_externalize_label(struct label *label, char *element_name,
struct sbuf *sb, int *claimed)
{
return (0);
}
static int
stub_internalize_label(struct label *label, char *element_name,
char *element_data, int *claimed)
{
return (0);
}
/*
* Object-specific entry point imeplementations are sorted alphabetically by
* object type name and then by operation.
*/
static int
stub_bpfdesc_check_receive(struct bpf_d *d, struct label *dlabel,
struct ifnet *ifp, struct label *ifplabel)
{
return (0);
}
static void
stub_bpfdesc_create(struct ucred *cred, struct bpf_d *d,
struct label *dlabel)
{
}
static void
stub_bpfdesc_create_mbuf(struct bpf_d *d, struct label *dlabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_cred_associate_nfsd(struct ucred *cred)
{
}
static int
stub_cred_check_relabel(struct ucred *cred, struct label *newlabel)
{
return (0);
}
static int
stub_cred_check_setaudit(struct ucred *cred, struct auditinfo *ai)
{
return (0);
}
static int
stub_cred_check_setaudit_addr(struct ucred *cred, struct auditinfo_addr *aia)
{
return (0);
}
static int
stub_cred_check_setauid(struct ucred *cred, uid_t auid)
{
return (0);
}
static int
stub_cred_check_setegid(struct ucred *cred, gid_t egid)
{
return (0);
}
static int
stub_cred_check_seteuid(struct ucred *cred, uid_t euid)
{
return (0);
}
static int
stub_cred_check_setgid(struct ucred *cred, gid_t gid)
{
return (0);
}
static int
stub_cred_check_setgroups(struct ucred *cred, int ngroups,
gid_t *gidset)
{
return (0);
}
static int
stub_cred_check_setregid(struct ucred *cred, gid_t rgid, gid_t egid)
{
return (0);
}
static int
stub_cred_check_setresgid(struct ucred *cred, gid_t rgid, gid_t egid,
gid_t sgid)
{
return (0);
}
static int
stub_cred_check_setresuid(struct ucred *cred, uid_t ruid, uid_t euid,
uid_t suid)
{
return (0);
}
static int
stub_cred_check_setreuid(struct ucred *cred, uid_t ruid, uid_t euid)
{
return (0);
}
static int
stub_cred_check_setuid(struct ucred *cred, uid_t uid)
{
return (0);
}
static int
stub_cred_check_visible(struct ucred *cr1, struct ucred *cr2)
{
return (0);
}
static void
stub_cred_create_init(struct ucred *cred)
{
}
static void
stub_cred_create_swapper(struct ucred *cred)
{
}
static void
stub_cred_relabel(struct ucred *cred, struct label *newlabel)
{
}
static void
stub_devfs_create_device(struct ucred *cred, struct mount *mp,
struct cdev *dev, struct devfs_dirent *de, struct label *delabel)
{
}
static void
stub_devfs_create_directory(struct mount *mp, char *dirname,
int dirnamelen, struct devfs_dirent *de, struct label *delabel)
{
}
static void
stub_devfs_create_symlink(struct ucred *cred, struct mount *mp,
struct devfs_dirent *dd, struct label *ddlabel, struct devfs_dirent *de,
struct label *delabel)
{
}
static void
stub_devfs_update(struct mount *mp, struct devfs_dirent *de,
struct label *delabel, struct vnode *vp, struct label *vplabel)
{
}
static void
stub_devfs_vnode_associate(struct mount *mp, struct label *mplabel,
struct devfs_dirent *de, struct label *delabel, struct vnode *vp,
struct label *vplabel)
{
}
static int
stub_ifnet_check_relabel(struct ucred *cred, struct ifnet *ifp,
struct label *ifplabel, struct label *newlabel)
{
return (0);
}
static int
stub_ifnet_check_transmit(struct ifnet *ifp, struct label *ifplabel,
struct mbuf *m, struct label *mlabel)
{
return (0);
}
static void
stub_ifnet_create(struct ifnet *ifp, struct label *ifplabel)
{
}
static void
stub_ifnet_create_mbuf(struct ifnet *ifp, struct label *ifplabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_ifnet_relabel(struct ucred *cred, struct ifnet *ifp,
struct label *ifplabel, struct label *newlabel)
{
}
static int
stub_inpcb_check_deliver(struct inpcb *inp, struct label *inplabel,
struct mbuf *m, struct label *mlabel)
{
return (0);
}
static void
stub_inpcb_create(struct socket *so, struct label *solabel,
struct inpcb *inp, struct label *inplabel)
{
}
static void
stub_inpcb_create_mbuf(struct inpcb *inp, struct label *inplabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_inpcb_sosetlabel(struct socket *so, struct label *solabel,
struct inpcb *inp, struct label *inplabel)
{
SOCK_LOCK_ASSERT(so);
}
static void
stub_ip6q_create(struct mbuf *m, struct label *mlabel, struct ip6q *q6,
struct label *q6label)
{
}
static int
stub_ip6q_match(struct mbuf *m, struct label *mlabel, struct ip6q *q6,
struct label *q6label)
{
return (1);
}
static void
stub_ip6q_reassemble(struct ip6q *q6, struct label *q6label, struct mbuf *m,
struct label *mlabel)
{
}
static void
stub_ip6q_update(struct mbuf *m, struct label *mlabel, struct ip6q *q6,
struct label *q6label)
{
}
static void
stub_ipq_create(struct mbuf *m, struct label *mlabel, struct ipq *q,
struct label *qlabel)
{
}
static int
stub_ipq_match(struct mbuf *m, struct label *mlabel, struct ipq *q,
struct label *qlabel)
{
return (1);
}
static void
stub_ipq_reassemble(struct ipq *q, struct label *qlabel, struct mbuf *m,
struct label *mlabel)
{
}
static void
stub_ipq_update(struct mbuf *m, struct label *mlabel, struct ipq *q,
struct label *qlabel)
{
}
static int
stub_kenv_check_dump(struct ucred *cred)
{
return (0);
}
static int
stub_kenv_check_get(struct ucred *cred, char *name)
{
return (0);
}
static int
stub_kenv_check_set(struct ucred *cred, char *name, char *value)
{
return (0);
}
static int
stub_kenv_check_unset(struct ucred *cred, char *name)
{
return (0);
}
static int
stub_kld_check_load(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_kld_check_stat(struct ucred *cred)
{
return (0);
}
static int
stub_mount_check_stat(struct ucred *cred, struct mount *mp,
struct label *mplabel)
{
return (0);
}
static void
stub_mount_create(struct ucred *cred, struct mount *mp,
struct label *mplabel)
{
}
static void
stub_netatalk_aarp_send(struct ifnet *ifp, struct label *iflpabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet_arp_send(struct ifnet *ifp, struct label *iflpabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet_firewall_reply(struct mbuf *mrecv, struct label *mrecvlabel,
struct mbuf *msend, struct label *msendlabel)
{
}
static void
stub_netinet_firewall_send(struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet_fragment(struct mbuf *m, struct label *mlabel, struct mbuf *frag,
struct label *fraglabel)
{
}
static void
stub_netinet_icmp_reply(struct mbuf *mrecv, struct label *mrecvlabel,
struct mbuf *msend, struct label *msendlabel)
{
}
static void
stub_netinet_icmp_replyinplace(struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet_igmp_send(struct ifnet *ifp, struct label *iflpabel,
struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet_tcp_reply(struct mbuf *m, struct label *mlabel)
{
}
static void
stub_netinet6_nd6_send(struct ifnet *ifp, struct label *iflpabel,
struct mbuf *m, struct label *mlabel)
{
}
static int
stub_pipe_check_ioctl(struct ucred *cred, struct pipepair *pp,
struct label *pplabel, unsigned long cmd, void /* caddr_t */ *data)
{
return (0);
}
static int
stub_pipe_check_poll(struct ucred *cred, struct pipepair *pp,
struct label *pplabel)
{
return (0);
}
static int
stub_pipe_check_read(struct ucred *cred, struct pipepair *pp,
struct label *pplabel)
{
return (0);
}
static int
stub_pipe_check_relabel(struct ucred *cred, struct pipepair *pp,
struct label *pplabel, struct label *newlabel)
{
return (0);
}
static int
stub_pipe_check_stat(struct ucred *cred, struct pipepair *pp,
struct label *pplabel)
{
return (0);
}
static int
stub_pipe_check_write(struct ucred *cred, struct pipepair *pp,
struct label *pplabel)
{
return (0);
}
static void
stub_pipe_create(struct ucred *cred, struct pipepair *pp,
struct label *pplabel)
{
}
static void
stub_pipe_relabel(struct ucred *cred, struct pipepair *pp,
struct label *pplabel, struct label *newlabel)
{
}
static int
stub_posixsem_check_getvalue(struct ucred *active_cred, struct ucred *file_cred,
struct ksem *ks, struct label *kslabel)
{
return (0);
}
static int
stub_posixsem_check_open(struct ucred *cred, struct ksem *ks,
struct label *kslabel)
{
return (0);
}
static int
stub_posixsem_check_post(struct ucred *active_cred, struct ucred *file_cred,
struct ksem *ks, struct label *kslabel)
{
return (0);
}
static int
stub_posixsem_check_stat(struct ucred *active_cred, struct ucred *file_cred,
struct ksem *ks, struct label *kslabel)
{
return (0);
}
static int
stub_posixsem_check_unlink(struct ucred *cred, struct ksem *ks,
struct label *kslabel)
{
return (0);
}
static int
stub_posixsem_check_wait(struct ucred *active_cred, struct ucred *file_cred,
struct ksem *ks, struct label *kslabel)
{
return (0);
}
static void
stub_posixsem_create(struct ucred *cred, struct ksem *ks,
struct label *kslabel)
{
}
static int
stub_posixshm_check_mmap(struct ucred *cred, struct shmfd *shmfd,
struct label *shmlabel, int prot, int flags)
{
return (0);
}
static int
stub_posixshm_check_open(struct ucred *cred, struct shmfd *shmfd,
struct label *shmlabel)
{
return (0);
}
static int
stub_posixshm_check_stat(struct ucred *active_cred, struct ucred *file_cred,
struct shmfd *shmfd, struct label *shmlabel)
{
return (0);
}
static int
stub_posixshm_check_truncate(struct ucred *active_cred,
struct ucred *file_cred, struct shmfd *shmfd, struct label *shmlabel)
{
return (0);
}
static int
stub_posixshm_check_unlink(struct ucred *cred, struct shmfd *shmfd,
struct label *shmlabel)
{
return (0);
}
static void
stub_posixshm_create(struct ucred *cred, struct shmfd *shmfd,
struct label *shmlabel)
{
}
static int
stub_priv_check(struct ucred *cred, int priv)
{
return (0);
}
static int
stub_priv_grant(struct ucred *cred, int priv)
{
return (EPERM);
}
static int
stub_proc_check_debug(struct ucred *cred, struct proc *p)
{
return (0);
}
static int
stub_proc_check_sched(struct ucred *cred, struct proc *p)
{
return (0);
}
static int
stub_proc_check_signal(struct ucred *cred, struct proc *p, int signum)
{
return (0);
}
static int
stub_proc_check_wait(struct ucred *cred, struct proc *p)
{
return (0);
}
static int
stub_socket_check_accept(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_bind(struct ucred *cred, struct socket *so,
struct label *solabel, struct sockaddr *sa)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_connect(struct ucred *cred, struct socket *so,
struct label *solabel, struct sockaddr *sa)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_create(struct ucred *cred, int domain, int type, int proto)
{
return (0);
}
static int
stub_socket_check_deliver(struct socket *so, struct label *solabel,
struct mbuf *m, struct label *mlabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_listen(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_poll(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_receive(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_relabel(struct ucred *cred, struct socket *so,
struct label *solabel, struct label *newlabel)
{
SOCK_LOCK_ASSERT(so);
return (0);
}
static int
stub_socket_check_send(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_socket_check_stat(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static int
stub_inpcb_check_visible(struct ucred *cred, struct inpcb *inp,
struct label *inplabel)
{
return (0);
}
static int
stub_socket_check_visible(struct ucred *cred, struct socket *so,
struct label *solabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
return (0);
}
static void
stub_socket_create(struct ucred *cred, struct socket *so,
struct label *solabel)
{
}
static void
stub_socket_create_mbuf(struct socket *so, struct label *solabel,
struct mbuf *m, struct label *mlabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
}
static void
stub_socket_newconn(struct socket *oldso, struct label *oldsolabel,
struct socket *newso, struct label *newsolabel)
{
#if 0
SOCK_LOCK(oldso);
SOCK_UNLOCK(oldso);
#endif
#if 0
SOCK_LOCK(newso);
SOCK_UNLOCK(newso);
#endif
}
static void
stub_socket_relabel(struct ucred *cred, struct socket *so,
struct label *solabel, struct label *newlabel)
{
SOCK_LOCK_ASSERT(so);
}
static void
stub_socketpeer_set_from_mbuf(struct mbuf *m, struct label *mlabel,
struct socket *so, struct label *sopeerlabel)
{
#if 0
SOCK_LOCK(so);
SOCK_UNLOCK(so);
#endif
}
static void
stub_socketpeer_set_from_socket(struct socket *oldso,
struct label *oldsolabel, struct socket *newso,
struct label *newsopeerlabel)
{
#if 0
SOCK_LOCK(oldso);
SOCK_UNLOCK(oldso);
#endif
#if 0
SOCK_LOCK(newso);
SOCK_UNLOCK(newso);
#endif
}
static void
stub_syncache_create(struct label *label, struct inpcb *inp)
{
}
static void
stub_syncache_create_mbuf(struct label *sc_label, struct mbuf *m,
struct label *mlabel)
{
}
static int
stub_system_check_acct(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_system_check_audit(struct ucred *cred, void *record, int length)
{
return (0);
}
static int
stub_system_check_auditctl(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_system_check_auditon(struct ucred *cred, int cmd)
{
return (0);
}
static int
stub_system_check_reboot(struct ucred *cred, int how)
{
return (0);
}
static int
stub_system_check_swapoff(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_system_check_swapon(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_system_check_sysctl(struct ucred *cred, struct sysctl_oid *oidp,
void *arg1, int arg2, struct sysctl_req *req)
{
return (0);
}
static void
stub_sysvmsg_cleanup(struct label *msglabel)
{
}
static void
stub_sysvmsg_create(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqlabel, struct msg *msgptr, struct label *msglabel)
{
}
static int
stub_sysvmsq_check_msgmsq(struct ucred *cred, struct msg *msgptr,
struct label *msglabel, struct msqid_kernel *msqkptr,
struct label *msqklabel)
{
return (0);
}
static int
stub_sysvmsq_check_msgrcv(struct ucred *cred, struct msg *msgptr,
struct label *msglabel)
{
return (0);
}
static int
stub_sysvmsq_check_msgrmid(struct ucred *cred, struct msg *msgptr,
struct label *msglabel)
{
return (0);
}
static int
stub_sysvmsq_check_msqget(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqklabel)
{
return (0);
}
static int
stub_sysvmsq_check_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqklabel)
{
return (0);
}
static int
stub_sysvmsq_check_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqklabel)
{
return (0);
}
static int
stub_sysvmsq_check_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqklabel, int cmd)
{
return (0);
}
static void
stub_sysvmsq_cleanup(struct label *msqlabel)
{
}
static void
stub_sysvmsq_create(struct ucred *cred, struct msqid_kernel *msqkptr,
struct label *msqlabel)
{
}
static int
stub_sysvsem_check_semctl(struct ucred *cred, struct semid_kernel *semakptr,
struct label *semaklabel, int cmd)
{
return (0);
}
static int
stub_sysvsem_check_semget(struct ucred *cred, struct semid_kernel *semakptr,
struct label *semaklabel)
{
return (0);
}
static int
stub_sysvsem_check_semop(struct ucred *cred, struct semid_kernel *semakptr,
struct label *semaklabel, size_t accesstype)
{
return (0);
}
static void
stub_sysvsem_cleanup(struct label *semalabel)
{
}
static void
stub_sysvsem_create(struct ucred *cred, struct semid_kernel *semakptr,
struct label *semalabel)
{
}
static int
stub_sysvshm_check_shmat(struct ucred *cred, struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int shmflg)
{
return (0);
}
static int
stub_sysvshm_check_shmctl(struct ucred *cred, struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int cmd)
{
return (0);
}
static int
stub_sysvshm_check_shmdt(struct ucred *cred, struct shmid_kernel *shmsegptr,
struct label *shmseglabel)
{
return (0);
}
static int
stub_sysvshm_check_shmget(struct ucred *cred, struct shmid_kernel *shmsegptr,
struct label *shmseglabel, int shmflg)
{
return (0);
}
static void
stub_sysvshm_cleanup(struct label *shmlabel)
{
}
static void
stub_sysvshm_create(struct ucred *cred, struct shmid_kernel *shmsegptr,
struct label *shmalabel)
{
}
static void
stub_thread_userret(struct thread *td)
{
}
static int
stub_vnode_associate_extattr(struct mount *mp, struct label *mplabel,
struct vnode *vp, struct label *vplabel)
{
return (0);
}
static void
stub_vnode_associate_singlelabel(struct mount *mp, struct label *mplabel,
struct vnode *vp, struct label *vplabel)
{
}
static int
stub_vnode_check_access(struct ucred *cred, struct vnode *vp,
struct label *vplabel, accmode_t accmode)
{
return (0);
}
static int
stub_vnode_check_chdir(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel)
{
return (0);
}
static int
stub_vnode_check_chroot(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel)
{
return (0);
}
static int
stub_vnode_check_create(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct componentname *cnp, struct vattr *vap)
{
return (0);
}
static int
stub_vnode_check_deleteacl(struct ucred *cred, struct vnode *vp,
struct label *vplabel, acl_type_t type)
{
return (0);
}
static int
stub_vnode_check_deleteextattr(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int attrnamespace, const char *name)
{
return (0);
}
static int
stub_vnode_check_exec(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct image_params *imgp,
struct label *execlabel)
{
return (0);
}
static int
stub_vnode_check_getacl(struct ucred *cred, struct vnode *vp,
struct label *vplabel, acl_type_t type)
{
return (0);
}
static int
stub_vnode_check_getextattr(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int attrnamespace, const char *name)
{
return (0);
}
static int
stub_vnode_check_link(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct vnode *vp, struct label *vplabel,
struct componentname *cnp)
{
return (0);
}
static int
stub_vnode_check_listextattr(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int attrnamespace)
{
return (0);
}
static int
stub_vnode_check_lookup(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct componentname *cnp)
{
return (0);
}
static int
stub_vnode_check_mmap(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int prot, int flags)
{
return (0);
}
static void
stub_vnode_check_mmap_downgrade(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int *prot)
{
}
static int
stub_vnode_check_mprotect(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int prot)
{
return (0);
}
static int
stub_vnode_check_open(struct ucred *cred, struct vnode *vp,
struct label *vplabel, accmode_t accmode)
{
return (0);
}
static int
stub_vnode_check_poll(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *vplabel)
{
return (0);
}
static int
stub_vnode_check_read(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *vplabel)
{
return (0);
}
static int
stub_vnode_check_readdir(struct ucred *cred, struct vnode *vp,
struct label *dvplabel)
{
return (0);
}
static int
stub_vnode_check_readlink(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_vnode_check_relabel(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct label *newlabel)
{
return (0);
}
static int
stub_vnode_check_rename_from(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct vnode *vp, struct label *vplabel,
struct componentname *cnp)
{
return (0);
}
static int
stub_vnode_check_rename_to(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct vnode *vp, struct label *vplabel,
int samedir, struct componentname *cnp)
{
return (0);
}
static int
stub_vnode_check_revoke(struct ucred *cred, struct vnode *vp,
struct label *vplabel)
{
return (0);
}
static int
stub_vnode_check_setacl(struct ucred *cred, struct vnode *vp,
struct label *vplabel, acl_type_t type, struct acl *acl)
{
return (0);
}
static int
stub_vnode_check_setextattr(struct ucred *cred, struct vnode *vp,
struct label *vplabel, int attrnamespace, const char *name)
{
return (0);
}
static int
stub_vnode_check_setflags(struct ucred *cred, struct vnode *vp,
struct label *vplabel, u_long flags)
{
return (0);
}
static int
stub_vnode_check_setmode(struct ucred *cred, struct vnode *vp,
struct label *vplabel, mode_t mode)
{
return (0);
}
static int
stub_vnode_check_setowner(struct ucred *cred, struct vnode *vp,
struct label *vplabel, uid_t uid, gid_t gid)
{
return (0);
}
static int
stub_vnode_check_setutimes(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct timespec atime, struct timespec mtime)
{
return (0);
}
static int
stub_vnode_check_stat(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *vplabel)
{
return (0);
}
static int
stub_vnode_check_unlink(struct ucred *cred, struct vnode *dvp,
struct label *dvplabel, struct vnode *vp, struct label *vplabel,
struct componentname *cnp)
{
return (0);
}
static int
stub_vnode_check_write(struct ucred *active_cred, struct ucred *file_cred,
struct vnode *vp, struct label *vplabel)
{
return (0);
}
static int
stub_vnode_create_extattr(struct ucred *cred, struct mount *mp,
struct label *mntlabel, struct vnode *dvp, struct label *dvplabel,
struct vnode *vp, struct label *vplabel, struct componentname *cnp)
{
return (0);
}
static void
stub_vnode_execve_transition(struct ucred *old, struct ucred *new,
struct vnode *vp, struct label *vplabel, struct label *interpvplabel,
struct image_params *imgp, struct label *execlabel)
{
}
static int
stub_vnode_execve_will_transition(struct ucred *old, struct vnode *vp,
struct label *vplabel, struct label *interpvplabel,
struct image_params *imgp, struct label *execlabel)
{
return (0);
}
static void
stub_vnode_relabel(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct label *label)
{
}
static int
stub_vnode_setlabel_extattr(struct ucred *cred, struct vnode *vp,
struct label *vplabel, struct label *intlabel)
{
return (0);
}
/*
* Register functions with MAC Framework policy entry points.
*/
static struct mac_policy_ops stub_ops =
{
.mpo_destroy = stub_destroy,
.mpo_init = stub_init,
.mpo_syscall = stub_syscall,
.mpo_bpfdesc_check_receive = stub_bpfdesc_check_receive,
.mpo_bpfdesc_create = stub_bpfdesc_create,
.mpo_bpfdesc_create_mbuf = stub_bpfdesc_create_mbuf,
.mpo_bpfdesc_destroy_label = stub_destroy_label,
.mpo_bpfdesc_init_label = stub_init_label,
.mpo_cred_associate_nfsd = stub_cred_associate_nfsd,
.mpo_cred_check_relabel = stub_cred_check_relabel,
.mpo_cred_check_setaudit = stub_cred_check_setaudit,
.mpo_cred_check_setaudit_addr = stub_cred_check_setaudit_addr,
.mpo_cred_check_setauid = stub_cred_check_setauid,
.mpo_cred_check_setegid = stub_cred_check_setegid,
.mpo_cred_check_seteuid = stub_cred_check_seteuid,
.mpo_cred_check_setgid = stub_cred_check_setgid,
.mpo_cred_check_setgroups = stub_cred_check_setgroups,
.mpo_cred_check_setregid = stub_cred_check_setregid,
.mpo_cred_check_setresgid = stub_cred_check_setresgid,
.mpo_cred_check_setresuid = stub_cred_check_setresuid,
.mpo_cred_check_setreuid = stub_cred_check_setreuid,
.mpo_cred_check_setuid = stub_cred_check_setuid,
.mpo_cred_check_visible = stub_cred_check_visible,
.mpo_cred_copy_label = stub_copy_label,
.mpo_cred_create_init = stub_cred_create_init,
.mpo_cred_create_swapper = stub_cred_create_swapper,
.mpo_cred_destroy_label = stub_destroy_label,
.mpo_cred_externalize_label = stub_externalize_label,
.mpo_cred_init_label = stub_init_label,
.mpo_cred_internalize_label = stub_internalize_label,
.mpo_cred_relabel= stub_cred_relabel,
.mpo_devfs_create_device = stub_devfs_create_device,
.mpo_devfs_create_directory = stub_devfs_create_directory,
.mpo_devfs_create_symlink = stub_devfs_create_symlink,
.mpo_devfs_destroy_label = stub_destroy_label,
.mpo_devfs_init_label = stub_init_label,
.mpo_devfs_update = stub_devfs_update,
.mpo_devfs_vnode_associate = stub_devfs_vnode_associate,
.mpo_ifnet_check_relabel = stub_ifnet_check_relabel,
.mpo_ifnet_check_transmit = stub_ifnet_check_transmit,
.mpo_ifnet_copy_label = stub_copy_label,
.mpo_ifnet_create = stub_ifnet_create,
.mpo_ifnet_create_mbuf = stub_ifnet_create_mbuf,
.mpo_ifnet_destroy_label = stub_destroy_label,
.mpo_ifnet_externalize_label = stub_externalize_label,
.mpo_ifnet_init_label = stub_init_label,
.mpo_ifnet_internalize_label = stub_internalize_label,
.mpo_ifnet_relabel = stub_ifnet_relabel,
.mpo_inpcb_check_deliver = stub_inpcb_check_deliver,
.mpo_inpcb_check_visible = stub_inpcb_check_visible,
.mpo_inpcb_create = stub_inpcb_create,
.mpo_inpcb_create_mbuf = stub_inpcb_create_mbuf,
.mpo_inpcb_destroy_label = stub_destroy_label,
.mpo_inpcb_init_label = stub_init_label_waitcheck,
.mpo_inpcb_sosetlabel = stub_inpcb_sosetlabel,
.mpo_ip6q_create = stub_ip6q_create,
.mpo_ip6q_destroy_label = stub_destroy_label,
.mpo_ip6q_init_label = stub_init_label_waitcheck,
.mpo_ip6q_match = stub_ip6q_match,
.mpo_ip6q_update = stub_ip6q_update,
.mpo_ip6q_reassemble = stub_ip6q_reassemble,
.mpo_ipq_create = stub_ipq_create,
.mpo_ipq_destroy_label = stub_destroy_label,
.mpo_ipq_init_label = stub_init_label_waitcheck,
.mpo_ipq_match = stub_ipq_match,
.mpo_ipq_update = stub_ipq_update,
.mpo_ipq_reassemble = stub_ipq_reassemble,
.mpo_kenv_check_dump = stub_kenv_check_dump,
.mpo_kenv_check_get = stub_kenv_check_get,
.mpo_kenv_check_set = stub_kenv_check_set,
.mpo_kenv_check_unset = stub_kenv_check_unset,
.mpo_kld_check_load = stub_kld_check_load,
.mpo_kld_check_stat = stub_kld_check_stat,
.mpo_mbuf_copy_label = stub_copy_label,
.mpo_mbuf_destroy_label = stub_destroy_label,
.mpo_mbuf_init_label = stub_init_label_waitcheck,
.mpo_mount_check_stat = stub_mount_check_stat,
.mpo_mount_create = stub_mount_create,
.mpo_mount_destroy_label = stub_destroy_label,
.mpo_mount_init_label = stub_init_label,
.mpo_netatalk_aarp_send = stub_netatalk_aarp_send,
.mpo_netinet_arp_send = stub_netinet_arp_send,
.mpo_netinet_firewall_reply = stub_netinet_firewall_reply,
.mpo_netinet_firewall_send = stub_netinet_firewall_send,
.mpo_netinet_fragment = stub_netinet_fragment,
.mpo_netinet_icmp_reply = stub_netinet_icmp_reply,
.mpo_netinet_icmp_replyinplace = stub_netinet_icmp_replyinplace,
.mpo_netinet_tcp_reply = stub_netinet_tcp_reply,
.mpo_netinet_igmp_send = stub_netinet_igmp_send,
.mpo_netinet6_nd6_send = stub_netinet6_nd6_send,
.mpo_pipe_check_ioctl = stub_pipe_check_ioctl,
.mpo_pipe_check_poll = stub_pipe_check_poll,
.mpo_pipe_check_read = stub_pipe_check_read,
.mpo_pipe_check_relabel = stub_pipe_check_relabel,
.mpo_pipe_check_stat = stub_pipe_check_stat,
.mpo_pipe_check_write = stub_pipe_check_write,
.mpo_pipe_copy_label = stub_copy_label,
.mpo_pipe_create = stub_pipe_create,
.mpo_pipe_destroy_label = stub_destroy_label,
.mpo_pipe_externalize_label = stub_externalize_label,
.mpo_pipe_init_label = stub_init_label,
.mpo_pipe_internalize_label = stub_internalize_label,
.mpo_pipe_relabel = stub_pipe_relabel,
.mpo_posixsem_check_getvalue = stub_posixsem_check_getvalue,
.mpo_posixsem_check_open = stub_posixsem_check_open,
.mpo_posixsem_check_post = stub_posixsem_check_post,
.mpo_posixsem_check_stat = stub_posixsem_check_stat,
.mpo_posixsem_check_unlink = stub_posixsem_check_unlink,
.mpo_posixsem_check_wait = stub_posixsem_check_wait,
.mpo_posixsem_create = stub_posixsem_create,
.mpo_posixsem_destroy_label = stub_destroy_label,
.mpo_posixsem_init_label = stub_init_label,
.mpo_posixshm_check_mmap = stub_posixshm_check_mmap,
.mpo_posixshm_check_open = stub_posixshm_check_open,
.mpo_posixshm_check_stat = stub_posixshm_check_stat,
.mpo_posixshm_check_truncate = stub_posixshm_check_truncate,
.mpo_posixshm_check_unlink = stub_posixshm_check_unlink,
.mpo_posixshm_create = stub_posixshm_create,
.mpo_posixshm_destroy_label = stub_destroy_label,
.mpo_posixshm_init_label = stub_init_label,
.mpo_priv_check = stub_priv_check,
.mpo_priv_grant = stub_priv_grant,
.mpo_proc_check_debug = stub_proc_check_debug,
.mpo_proc_check_sched = stub_proc_check_sched,
.mpo_proc_check_signal = stub_proc_check_signal,
.mpo_proc_check_wait = stub_proc_check_wait,
.mpo_socket_check_accept = stub_socket_check_accept,
.mpo_socket_check_bind = stub_socket_check_bind,
.mpo_socket_check_connect = stub_socket_check_connect,
.mpo_socket_check_create = stub_socket_check_create,
.mpo_socket_check_deliver = stub_socket_check_deliver,
.mpo_socket_check_listen = stub_socket_check_listen,
.mpo_socket_check_poll = stub_socket_check_poll,
.mpo_socket_check_receive = stub_socket_check_receive,
.mpo_socket_check_relabel = stub_socket_check_relabel,
.mpo_socket_check_send = stub_socket_check_send,
.mpo_socket_check_stat = stub_socket_check_stat,
.mpo_socket_check_visible = stub_socket_check_visible,
.mpo_socket_copy_label = stub_copy_label,
.mpo_socket_create = stub_socket_create,
.mpo_socket_create_mbuf = stub_socket_create_mbuf,
.mpo_socket_destroy_label = stub_destroy_label,
.mpo_socket_externalize_label = stub_externalize_label,
.mpo_socket_init_label = stub_init_label_waitcheck,
.mpo_socket_internalize_label = stub_internalize_label,
.mpo_socket_newconn = stub_socket_newconn,
.mpo_socket_relabel = stub_socket_relabel,
.mpo_socketpeer_destroy_label = stub_destroy_label,
.mpo_socketpeer_externalize_label = stub_externalize_label,
.mpo_socketpeer_init_label = stub_init_label_waitcheck,
.mpo_socketpeer_set_from_mbuf = stub_socketpeer_set_from_mbuf,
.mpo_socketpeer_set_from_socket = stub_socketpeer_set_from_socket,
.mpo_syncache_init_label = stub_init_label_waitcheck,
.mpo_syncache_destroy_label = stub_destroy_label,
.mpo_syncache_create = stub_syncache_create,
.mpo_syncache_create_mbuf= stub_syncache_create_mbuf,
.mpo_sysvmsg_cleanup = stub_sysvmsg_cleanup,
.mpo_sysvmsg_create = stub_sysvmsg_create,
.mpo_sysvmsg_destroy_label = stub_destroy_label,
.mpo_sysvmsg_init_label = stub_init_label,
.mpo_sysvmsq_check_msgmsq = stub_sysvmsq_check_msgmsq,
.mpo_sysvmsq_check_msgrcv = stub_sysvmsq_check_msgrcv,
.mpo_sysvmsq_check_msgrmid = stub_sysvmsq_check_msgrmid,
.mpo_sysvmsq_check_msqget = stub_sysvmsq_check_msqget,
.mpo_sysvmsq_check_msqsnd = stub_sysvmsq_check_msqsnd,
.mpo_sysvmsq_check_msqrcv = stub_sysvmsq_check_msqrcv,
.mpo_sysvmsq_check_msqctl = stub_sysvmsq_check_msqctl,
.mpo_sysvmsq_cleanup = stub_sysvmsq_cleanup,
.mpo_sysvmsq_create = stub_sysvmsq_create,
.mpo_sysvmsq_destroy_label = stub_destroy_label,
.mpo_sysvmsq_init_label = stub_init_label,
.mpo_sysvsem_check_semctl = stub_sysvsem_check_semctl,
.mpo_sysvsem_check_semget = stub_sysvsem_check_semget,
.mpo_sysvsem_check_semop = stub_sysvsem_check_semop,
.mpo_sysvsem_cleanup = stub_sysvsem_cleanup,
.mpo_sysvsem_create = stub_sysvsem_create,
.mpo_sysvsem_destroy_label = stub_destroy_label,
.mpo_sysvsem_init_label = stub_init_label,
.mpo_sysvshm_check_shmat = stub_sysvshm_check_shmat,
.mpo_sysvshm_check_shmctl = stub_sysvshm_check_shmctl,
.mpo_sysvshm_check_shmdt = stub_sysvshm_check_shmdt,
.mpo_sysvshm_check_shmget = stub_sysvshm_check_shmget,
.mpo_sysvshm_cleanup = stub_sysvshm_cleanup,
.mpo_sysvshm_create = stub_sysvshm_create,
.mpo_sysvshm_destroy_label = stub_destroy_label,
.mpo_sysvshm_init_label = stub_init_label,
.mpo_system_check_acct = stub_system_check_acct,
.mpo_system_check_audit = stub_system_check_audit,
.mpo_system_check_auditctl = stub_system_check_auditctl,
.mpo_system_check_auditon = stub_system_check_auditon,
.mpo_system_check_reboot = stub_system_check_reboot,
.mpo_system_check_swapoff = stub_system_check_swapoff,
.mpo_system_check_swapon = stub_system_check_swapon,
.mpo_system_check_sysctl = stub_system_check_sysctl,
.mpo_thread_userret = stub_thread_userret,
.mpo_vnode_associate_extattr = stub_vnode_associate_extattr,
.mpo_vnode_associate_singlelabel = stub_vnode_associate_singlelabel,
.mpo_vnode_check_access = stub_vnode_check_access,
.mpo_vnode_check_chdir = stub_vnode_check_chdir,
.mpo_vnode_check_chroot = stub_vnode_check_chroot,
.mpo_vnode_check_create = stub_vnode_check_create,
.mpo_vnode_check_deleteacl = stub_vnode_check_deleteacl,
.mpo_vnode_check_deleteextattr = stub_vnode_check_deleteextattr,
.mpo_vnode_check_exec = stub_vnode_check_exec,
.mpo_vnode_check_getacl = stub_vnode_check_getacl,
.mpo_vnode_check_getextattr = stub_vnode_check_getextattr,
.mpo_vnode_check_link = stub_vnode_check_link,
.mpo_vnode_check_listextattr = stub_vnode_check_listextattr,
.mpo_vnode_check_lookup = stub_vnode_check_lookup,
.mpo_vnode_check_mmap = stub_vnode_check_mmap,
.mpo_vnode_check_mmap_downgrade = stub_vnode_check_mmap_downgrade,
.mpo_vnode_check_mprotect = stub_vnode_check_mprotect,
.mpo_vnode_check_open = stub_vnode_check_open,
.mpo_vnode_check_poll = stub_vnode_check_poll,
.mpo_vnode_check_read = stub_vnode_check_read,
.mpo_vnode_check_readdir = stub_vnode_check_readdir,
.mpo_vnode_check_readlink = stub_vnode_check_readlink,
.mpo_vnode_check_relabel = stub_vnode_check_relabel,
.mpo_vnode_check_rename_from = stub_vnode_check_rename_from,
.mpo_vnode_check_rename_to = stub_vnode_check_rename_to,
.mpo_vnode_check_revoke = stub_vnode_check_revoke,
.mpo_vnode_check_setacl = stub_vnode_check_setacl,
.mpo_vnode_check_setextattr = stub_vnode_check_setextattr,
.mpo_vnode_check_setflags = stub_vnode_check_setflags,
.mpo_vnode_check_setmode = stub_vnode_check_setmode,
.mpo_vnode_check_setowner = stub_vnode_check_setowner,
.mpo_vnode_check_setutimes = stub_vnode_check_setutimes,
.mpo_vnode_check_stat = stub_vnode_check_stat,
.mpo_vnode_check_unlink = stub_vnode_check_unlink,
.mpo_vnode_check_write = stub_vnode_check_write,
.mpo_vnode_copy_label = stub_copy_label,
.mpo_vnode_create_extattr = stub_vnode_create_extattr,
.mpo_vnode_destroy_label = stub_destroy_label,
.mpo_vnode_execve_transition = stub_vnode_execve_transition,
.mpo_vnode_execve_will_transition = stub_vnode_execve_will_transition,
.mpo_vnode_externalize_label = stub_externalize_label,
.mpo_vnode_init_label = stub_init_label,
.mpo_vnode_internalize_label = stub_internalize_label,
.mpo_vnode_relabel = stub_vnode_relabel,
.mpo_vnode_setlabel_extattr = stub_vnode_setlabel_extattr,
};
MAC_POLICY_SET(&stub_ops, mac_stub, "TrustedBSD MAC/Stub",
MPC_LOADTIME_FLAG_UNLOADOK, NULL);
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