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mac_vfs.c
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mac_vfs.c
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/*
* Copyright (c) 2007-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*-
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
* Copyright (c) 2001 Ilmar S. Habibulin
* Copyright (c) 2001, 2002, 2003, 2004 Networks Associates Technology, Inc.
* Copyright (c) 2005 SPARTA, Inc.
*
* This software was developed by Robert Watson and Ilmar Habibulin 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <kern/kalloc.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/file_internal.h>
#include <sys/imgact.h>
#include <sys/namei.h>
#include <sys/mount_internal.h>
#include <sys/pipe.h>
#include <sys/posix_sem.h>
#include <sys/posix_shm.h>
#include <sys/reason.h>
#include <sys/uio_internal.h>
#include <sys/vnode_internal.h>
#include <miscfs/devfs/devfsdefs.h>
#include <miscfs/devfs/fdesc.h>
#include <security/mac_internal.h>
/* convert {R,W,X}_OK values to V{READ,WRITE,EXEC} */
#define ACCESS_MODE_TO_VNODE_MASK(m) (m << 6)
static struct label *
mac_devfsdirent_label_alloc(void)
{
struct label *label;
label = mac_labelzone_alloc(MAC_WAITOK);
if (label == NULL)
return (NULL);
MAC_PERFORM(devfs_label_init, label);
return (label);
}
void
mac_devfs_label_init(struct devnode *de)
{
de->dn_label = mac_devfsdirent_label_alloc();
}
static struct label *
mac_mount_label_alloc(void)
{
struct label *label;
label = mac_labelzone_alloc(MAC_WAITOK);
if (label == NULL)
return (NULL);
MAC_PERFORM(mount_label_init, label);
return (label);
}
void
mac_mount_label_init(struct mount *mp)
{
mp->mnt_mntlabel = mac_mount_label_alloc();
}
struct label *
mac_vnode_label_alloc(void)
{
struct label *label;
label = mac_labelzone_alloc(MAC_WAITOK);
if (label == NULL)
return (NULL);
MAC_PERFORM(vnode_label_init, label);
return (label);
}
void
mac_vnode_label_init(vnode_t vp)
{
vp->v_label = mac_vnode_label_alloc();
}
int
mac_vnode_label_init_needed(vnode_t vp)
{
return (mac_label_vnodes != 0 && vp->v_label == NULL);
}
/*
* vnode labels are allocated at the same time as vnodes, but vnodes are never
* freed. Instead, we want to remove any sensitive information before putting
* them on the free list for reuse.
*/
void
mac_vnode_label_recycle(vnode_t vp)
{
MAC_PERFORM(vnode_label_recycle, vp->v_label);
}
static void
mac_devfs_label_free(struct label *label)
{
MAC_PERFORM(devfs_label_destroy, label);
mac_labelzone_free(label);
}
void
mac_devfs_label_destroy(struct devnode *de)
{
if (de->dn_label != NULL) {
mac_devfs_label_free(de->dn_label);
de->dn_label = NULL;
}
}
static void
mac_mount_label_free(struct label *label)
{
MAC_PERFORM(mount_label_destroy, label);
mac_labelzone_free(label);
}
void
mac_mount_label_destroy(struct mount *mp)
{
if (mp->mnt_mntlabel != NULL) {
mac_mount_label_free(mp->mnt_mntlabel);
mp->mnt_mntlabel = NULL;
}
}
void
mac_vnode_label_free(struct label *label)
{
MAC_PERFORM(vnode_label_destroy, label);
mac_labelzone_free(label);
}
#ifndef __APPLE__
void
mac_vnode_label_destroy(struct vnode *vp)
{
if (vp->v_label != NULL) {
mac_vnode_label_free(vp->v_label);
vp->v_label = NULL;
}
}
#endif
void
mac_vnode_label_copy(struct label *src, struct label *dest)
{
if (src == NULL) {
MAC_PERFORM(vnode_label_init, dest);
} else {
MAC_PERFORM(vnode_label_copy, src, dest);
}
}
int
mac_vnode_label_externalize_audit(struct vnode *vp, struct mac *mac)
{
int error;
/* It is assumed that any necessary vnode locking is done on entry */
error = MAC_EXTERNALIZE_AUDIT(vnode, vp->v_label,
mac->m_string, mac->m_buflen);
return (error);
}
int
mac_vnode_label_externalize(struct label *label, char *elements,
char *outbuf, size_t outbuflen, int flags __unused)
{
int error;
error = MAC_EXTERNALIZE(vnode, label, elements, outbuf, outbuflen);
return (error);
}
int
mac_vnode_label_internalize(struct label *label, char *string)
{
int error;
error = MAC_INTERNALIZE(vnode, label, string);
return (error);
}
int
mac_mount_label_internalize(struct label *label, char *string)
{
int error;
error = MAC_INTERNALIZE(mount, label, string);
return (error);
}
int
mac_mount_label_externalize(struct label *label, char *elements,
char *outbuf, size_t outbuflen)
{
int error;
error = MAC_EXTERNALIZE(mount, label, elements, outbuf, outbuflen);
return (error);
}
void
mac_devfs_label_copy(struct label *src, struct label *dest)
{
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_device_enforce)
return;
#endif
MAC_PERFORM(devfs_label_copy, src, dest);
}
void
mac_devfs_label_update(struct mount *mp, struct devnode *de,
struct vnode *vp)
{
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_device_enforce)
return;
#endif
MAC_PERFORM(devfs_label_update, mp, de, de->dn_label, vp,
vp->v_label);
}
int
mac_vnode_label_associate(struct mount *mp, struct vnode *vp, vfs_context_t ctx)
{
struct devnode *dnp;
struct fdescnode *fnp;
int error = 0;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return (error);
#endif
/* XXX: should not inspect v_tag in kernel! */
switch (vp->v_tag) {
case VT_DEVFS:
dnp = VTODN(vp);
mac_vnode_label_associate_devfs(mp, dnp, vp);
break;
case VT_FDESC:
fnp = VTOFDESC(vp);
error = mac_vnode_label_associate_fdesc(mp, fnp, vp, ctx);
break;
default:
error = mac_vnode_label_associate_extattr(mp, vp);
break;
}
return (error);
}
void
mac_vnode_label_associate_devfs(struct mount *mp, struct devnode *de,
struct vnode *vp)
{
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_device_enforce)
return;
#endif
MAC_PERFORM(vnode_label_associate_devfs,
mp, mp ? mp->mnt_mntlabel : NULL,
de, de->dn_label,
vp, vp->v_label);
}
int
mac_vnode_label_associate_extattr(struct mount *mp, struct vnode *vp)
{
int error;
MAC_CHECK(vnode_label_associate_extattr, mp, mp->mnt_mntlabel, vp,
vp->v_label);
return (error);
}
void
mac_vnode_label_associate_singlelabel(struct mount *mp, struct vnode *vp)
{
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
if (!mac_label_vnodes)
return;
MAC_PERFORM(vnode_label_associate_singlelabel, mp,
mp ? mp->mnt_mntlabel : NULL, vp, vp->v_label);
}
int
mac_vnode_notify_create(vfs_context_t ctx, struct mount *mp,
struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return (0);
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_notify_create, cred, mp, mp->mnt_mntlabel,
dvp, dvp->v_label, vp, vp->v_label, cnp);
return (error);
}
void
mac_vnode_notify_rename(vfs_context_t ctx, struct vnode *vp,
struct vnode *dvp, struct componentname *cnp)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_rename, cred, vp, vp->v_label,
dvp, dvp->v_label, cnp);
}
void
mac_vnode_notify_open(vfs_context_t ctx, struct vnode *vp, int acc_flags)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_open, cred, vp, vp->v_label, acc_flags);
}
void
mac_vnode_notify_link(vfs_context_t ctx, struct vnode *vp,
struct vnode *dvp, struct componentname *cnp)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_link, cred, dvp, dvp->v_label, vp, vp->v_label, cnp);
}
void
mac_vnode_notify_deleteextattr(vfs_context_t ctx, struct vnode *vp, const char *name)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_deleteextattr, cred, vp, vp->v_label, name);
}
void
mac_vnode_notify_setacl(vfs_context_t ctx, struct vnode *vp, struct kauth_acl *acl)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setacl, cred, vp, vp->v_label, acl);
}
void
mac_vnode_notify_setattrlist(vfs_context_t ctx, struct vnode *vp, struct attrlist *alist)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setattrlist, cred, vp, vp->v_label, alist);
}
void
mac_vnode_notify_setextattr(vfs_context_t ctx, struct vnode *vp, const char *name, struct uio *uio)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setextattr, cred, vp, vp->v_label, name, uio);
}
void
mac_vnode_notify_setflags(vfs_context_t ctx, struct vnode *vp, u_long flags)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setflags, cred, vp, vp->v_label, flags);
}
void
mac_vnode_notify_setmode(vfs_context_t ctx, struct vnode *vp, mode_t mode)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setmode, cred, vp, vp->v_label, mode);
}
void
mac_vnode_notify_setowner(vfs_context_t ctx, struct vnode *vp, uid_t uid, gid_t gid)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setowner, cred, vp, vp->v_label, uid, gid);
}
void
mac_vnode_notify_setutimes(vfs_context_t ctx, struct vnode *vp, struct timespec atime, struct timespec mtime)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_setutimes, cred, vp, vp->v_label, atime, mtime);
}
void
mac_vnode_notify_truncate(vfs_context_t ctx, kauth_cred_t file_cred, struct vnode *vp)
{
kauth_cred_t cred;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return;
MAC_PERFORM(vnode_notify_truncate, cred, file_cred, vp, vp->v_label);
}
/*
* Extended attribute 'name' was updated via
* vn_setxattr() or vn_removexattr(). Allow the
* policy to update the vnode label.
*/
void
mac_vnode_label_update_extattr(struct mount *mp, struct vnode *vp,
const char *name)
{
int error = 0;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return;
#endif
if (!mac_label_vnodes)
return;
MAC_PERFORM(vnode_label_update_extattr, mp, mp->mnt_mntlabel, vp,
vp->v_label, name);
if (error == 0)
return;
vnode_lock(vp);
vnode_relabel(vp);
vnode_unlock(vp);
return;
}
static int
mac_vnode_label_store(vfs_context_t ctx, struct vnode *vp,
struct label *intlabel)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
if (!mac_label_vnodes)
return 0;
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_label_store, cred, vp, vp->v_label, intlabel);
return (error);
}
void
mac_cred_label_update_execve(vfs_context_t ctx, kauth_cred_t new, struct vnode *vp, off_t offset,
struct vnode *scriptvp, struct label *scriptvnodelabel, struct label *execl, u_int *csflags,
void *macextensions, int *disjoint, int *labelupdateerror)
{
kauth_cred_t cred;
*disjoint = 0;
int error;
posix_cred_t pcred = posix_cred_get(new);
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_proc_enforce || !mac_vnode_enforce)
return;
#endif
/* mark the new cred to indicate "matching" includes the label */
pcred->cr_flags |= CRF_MAC_ENFORCE;
cred = vfs_context_ucred(ctx);
/*
* NB: Cannot use MAC_CHECK macro because we need a sequence point after
* calling exec_spawnattr_getmacpolicyinfo() and before passing the
* spawnattrlen as an argument to the hook.
*/
{
struct mac_policy_conf *mpc;
u_int i;
error = 0;
for (i = 0; i< mac_policy_list.staticmax; i++) {
mpc = mac_policy_list.entries[i].mpc;
if (mpc == NULL)
continue;
mpo_cred_label_update_execve_t *hook = mpc->mpc_ops->mpo_cred_label_update_execve;
if (hook == NULL)
continue;
size_t spawnattrlen = 0;
void *spawnattr = exec_spawnattr_getmacpolicyinfo(macextensions, mpc->mpc_name, &spawnattrlen);
error = mac_error_select(hook(cred, new, vfs_context_proc(ctx), vp, offset, scriptvp,
vp->v_label, scriptvnodelabel, execl, csflags, spawnattr, spawnattrlen, disjoint),
error);
}
if (mac_policy_list_conditional_busy() != 0) {
for (; i <= mac_policy_list.maxindex; i++) {
mpc = mac_policy_list.entries[i].mpc;
if (mpc == NULL)
continue;
mpo_cred_label_update_execve_t *hook = mpc->mpc_ops->mpo_cred_label_update_execve;
if (hook == NULL)
continue;
size_t spawnattrlen = 0;
void *spawnattr = exec_spawnattr_getmacpolicyinfo(macextensions, mpc->mpc_name, &spawnattrlen);
error = mac_error_select(hook(cred, new, vfs_context_proc(ctx), vp, offset, scriptvp,
vp->v_label, scriptvnodelabel, execl, csflags, spawnattr, spawnattrlen, disjoint),
error);
}
mac_policy_list_unbusy();
}
}
*labelupdateerror = error;
}
int
mac_cred_check_label_update_execve(vfs_context_t ctx, struct vnode *vp, off_t offset,
struct vnode *scriptvp, struct label *scriptvnodelabel, struct label *execlabel,
struct proc *p, void *macextensions)
{
kauth_cred_t cred;
int result = 0;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_proc_enforce || !mac_vnode_enforce)
return result;
#endif
cred = vfs_context_ucred(ctx);
/*
* NB: Cannot use MAC_BOOLEAN macro because we need a sequence point after
* calling exec_spawnattr_getmacpolicyinfo() and before passing the
* spawnattrlen as an argument to the hook.
*/
{
struct mac_policy_conf *mpc;
u_int i;
for (i = 0; i< mac_policy_list.staticmax; i++) {
mpc = mac_policy_list.entries[i].mpc;
if (mpc == NULL)
continue;
mpo_cred_check_label_update_execve_t *hook = mpc->mpc_ops->mpo_cred_check_label_update_execve;
if (hook == NULL)
continue;
size_t spawnattrlen = 0;
void *spawnattr = exec_spawnattr_getmacpolicyinfo(macextensions, mpc->mpc_name, &spawnattrlen);
result = result || hook(cred, vp, offset, scriptvp, vp->v_label, scriptvnodelabel, execlabel, p, spawnattr, spawnattrlen);
}
if (mac_policy_list_conditional_busy() != 0) {
for (; i <= mac_policy_list.maxindex; i++) {
mpc = mac_policy_list.entries[i].mpc;
if (mpc == NULL)
continue;
mpo_cred_check_label_update_execve_t *hook = mpc->mpc_ops->mpo_cred_check_label_update_execve;
if (hook == NULL)
continue;
size_t spawnattrlen = 0;
void *spawnattr = exec_spawnattr_getmacpolicyinfo(macextensions, mpc->mpc_name, &spawnattrlen);
result = result || hook(cred, vp, offset, scriptvp, vp->v_label, scriptvnodelabel, execlabel, p, spawnattr, spawnattrlen);
}
mac_policy_list_unbusy();
}
}
return (result);
}
int
mac_vnode_check_access(vfs_context_t ctx, struct vnode *vp,
int acc_mode)
{
kauth_cred_t cred;
int error;
int mask;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
/* Convert {R,W,X}_OK values to V{READ,WRITE,EXEC} for entry points */
mask = ACCESS_MODE_TO_VNODE_MASK(acc_mode);
MAC_CHECK(vnode_check_access, cred, vp, vp->v_label, mask);
return (error);
}
int
mac_vnode_check_chdir(vfs_context_t ctx, struct vnode *dvp)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_chdir, cred, dvp, dvp->v_label);
return (error);
}
int
mac_vnode_check_chroot(vfs_context_t ctx, struct vnode *dvp,
struct componentname *cnp)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_chroot, cred, dvp, dvp->v_label, cnp);
return (error);
}
int
mac_vnode_check_clone(vfs_context_t ctx, struct vnode *dvp,
struct vnode *vp, struct componentname *cnp)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_clone, cred, dvp, dvp->v_label, vp,
vp->v_label, cnp);
return (error);
}
int
mac_vnode_check_create(vfs_context_t ctx, struct vnode *dvp,
struct componentname *cnp, struct vnode_attr *vap)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_create, cred, dvp, dvp->v_label, cnp, vap);
return (error);
}
int
mac_vnode_check_unlink(vfs_context_t ctx, struct vnode *dvp, struct vnode *vp,
struct componentname *cnp)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_unlink, cred, dvp, dvp->v_label, vp,
vp->v_label, cnp);
return (error);
}
#if 0
int
mac_vnode_check_deleteacl(vfs_context_t ctx, struct vnode *vp,
acl_type_t type)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_deleteacl, cred, vp, vp->v_label, type);
return (error);
}
#endif
int
mac_vnode_check_deleteextattr(vfs_context_t ctx, struct vnode *vp,
const char *name)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_deleteextattr, cred, vp, vp->v_label, name);
return (error);
}
int
mac_vnode_check_exchangedata(vfs_context_t ctx,
struct vnode *v1, struct vnode *v2)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_exchangedata, cred, v1, v1->v_label,
v2, v2->v_label);
return (error);
}
#if 0
int
mac_vnode_check_getacl(vfs_context_t ctx, struct vnode *vp, acl_type_t type)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_getacl, cred, vp, vp->v_label, type);
return (error);
}
#endif
int
mac_vnode_check_getattr(vfs_context_t ctx, struct ucred *file_cred,
struct vnode *vp, struct vnode_attr *va)
{
kauth_cred_t cred;
int error;
#if SECURITY_MAC_CHECK_ENFORCE
/* 21167099 - only check if we allow write */
if (!mac_vnode_enforce)
return 0;
#endif
cred = vfs_context_ucred(ctx);
if (!mac_cred_check_enforce(cred))
return (0);
MAC_CHECK(vnode_check_getattr, cred, file_cred, vp, vp->v_label, va);
return (error);
}
int
mac_vnode_check_getattrlist(vfs_context_t ctx, struct vnode *vp,
struct attrlist *alist)
{
kauth_cred_t cred;
int error;