7ee4e910ce
option, unbreak the lock tracing release semantic by embedding calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined version of the releasing functions for mutex, rwlock and sxlock. Failing to do so skips the lockstat_probe_func invokation for unlocking. - As part of the LOCKSTAT support is inlined in mutex operation, for kernel compiled without lock debugging options, potentially every consumer must be compiled including opt_kdtrace.h. Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES is linked there and it is only used as a compile-time stub [0]. [0] immediately shows some new bug as DTRACE-derived support for debug in sfxge is broken and it was never really tested. As it was not including correctly opt_kdtrace.h before it was never enabled so it was kept broken for a while. Fix this by using a protection stub, leaving sfxge driver authors the responsibility for fixing it appropriately [1]. Sponsored by: EMC / Isilon storage division Discussed with: rstone [0] Reported by: rstone [1] Discussed with: philip
1071 lines
26 KiB
C
1071 lines
26 KiB
C
/*-
|
|
* Copyright (c) 1999-2002, 2009 Robert N. M. Watson
|
|
* Copyright (c) 2001 Ilmar S. Habibulin
|
|
* Copyright (c) 2001-2005 McAfee, Inc.
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* Copyright (c) 2005-2006 SPARTA, Inc.
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* Copyright (c) 2008 Apple Inc.
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* All rights reserved.
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|
*
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* This software was developed by Robert Watson and Ilmar Habibulin for the
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* TrustedBSD Project.
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*
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|
* This software was developed for the FreeBSD Project in part by McAfee
|
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* Research, the Security Research Division of McAfee, Inc. under
|
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* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
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* CHATS research program.
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*
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* This software was enhanced by SPARTA ISSO under SPAWAR contract
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* N66001-04-C-6019 ("SEFOS").
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*
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* This software was developed at the University of Cambridge Computer
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* Laboratory with support from a grant from Google, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
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*/
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|
|
#include <sys/cdefs.h>
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|
__FBSDID("$FreeBSD$");
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|
|
|
#include "opt_mac.h"
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|
|
|
#include <sys/param.h>
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|
#include <sys/condvar.h>
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|
#include <sys/extattr.h>
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|
#include <sys/imgact.h>
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|
#include <sys/kernel.h>
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|
#include <sys/lock.h>
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|
#include <sys/malloc.h>
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|
#include <sys/mutex.h>
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|
#include <sys/proc.h>
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|
#include <sys/sbuf.h>
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|
#include <sys/systm.h>
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|
#include <sys/vnode.h>
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|
#include <sys/mount.h>
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|
#include <sys/file.h>
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|
#include <sys/namei.h>
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|
#include <sys/sdt.h>
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|
#include <sys/sysctl.h>
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|
|
|
#include <vm/vm.h>
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|
#include <vm/pmap.h>
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|
#include <vm/vm_map.h>
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|
#include <vm/vm_object.h>
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|
|
|
#include <fs/devfs/devfs.h>
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|
|
|
#include <security/mac/mac_framework.h>
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|
#include <security/mac/mac_internal.h>
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|
#include <security/mac/mac_policy.h>
|
|
|
|
/*
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|
* Warn about EA transactions only the first time they happen. No locking on
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* this variable.
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|
*/
|
|
static int ea_warn_once = 0;
|
|
|
|
static int mac_vnode_setlabel_extattr(struct ucred *cred,
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struct vnode *vp, struct label *intlabel);
|
|
|
|
static struct label *
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mac_devfs_label_alloc(void)
|
|
{
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|
struct label *label;
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|
|
|
label = mac_labelzone_alloc(M_WAITOK);
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MAC_POLICY_PERFORM(devfs_init_label, label);
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|
return (label);
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|
}
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|
|
|
void
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|
mac_devfs_init(struct devfs_dirent *de)
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|
{
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|
|
|
if (mac_labeled & MPC_OBJECT_DEVFS)
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de->de_label = mac_devfs_label_alloc();
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else
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|
de->de_label = NULL;
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|
}
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|
|
|
static struct label *
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mac_mount_label_alloc(void)
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|
{
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struct label *label;
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|
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label = mac_labelzone_alloc(M_WAITOK);
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MAC_POLICY_PERFORM(mount_init_label, label);
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return (label);
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}
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|
|
|
void
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|
mac_mount_init(struct mount *mp)
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|
{
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|
|
|
if (mac_labeled & MPC_OBJECT_MOUNT)
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mp->mnt_label = mac_mount_label_alloc();
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else
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mp->mnt_label = NULL;
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}
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|
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|
struct label *
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mac_vnode_label_alloc(void)
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{
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struct label *label;
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label = mac_labelzone_alloc(M_WAITOK);
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MAC_POLICY_PERFORM(vnode_init_label, label);
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return (label);
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}
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|
void
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mac_vnode_init(struct vnode *vp)
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|
{
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if (mac_labeled & MPC_OBJECT_VNODE)
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vp->v_label = mac_vnode_label_alloc();
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else
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vp->v_label = NULL;
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}
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static void
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mac_devfs_label_free(struct label *label)
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{
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MAC_POLICY_PERFORM_NOSLEEP(devfs_destroy_label, label);
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mac_labelzone_free(label);
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}
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void
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mac_devfs_destroy(struct devfs_dirent *de)
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{
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if (de->de_label != NULL) {
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mac_devfs_label_free(de->de_label);
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de->de_label = NULL;
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}
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}
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static void
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mac_mount_label_free(struct label *label)
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{
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MAC_POLICY_PERFORM_NOSLEEP(mount_destroy_label, label);
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mac_labelzone_free(label);
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}
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void
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|
mac_mount_destroy(struct mount *mp)
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{
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if (mp->mnt_label != NULL) {
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mac_mount_label_free(mp->mnt_label);
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mp->mnt_label = NULL;
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}
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}
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|
void
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mac_vnode_label_free(struct label *label)
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{
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MAC_POLICY_PERFORM_NOSLEEP(vnode_destroy_label, label);
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mac_labelzone_free(label);
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}
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void
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mac_vnode_destroy(struct vnode *vp)
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{
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if (vp->v_label != NULL) {
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mac_vnode_label_free(vp->v_label);
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vp->v_label = NULL;
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}
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}
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void
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mac_vnode_copy_label(struct label *src, struct label *dest)
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|
{
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MAC_POLICY_PERFORM_NOSLEEP(vnode_copy_label, src, dest);
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}
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|
int
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mac_vnode_externalize_label(struct label *label, char *elements,
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char *outbuf, size_t outbuflen)
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{
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int error;
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MAC_POLICY_EXTERNALIZE(vnode, label, elements, outbuf, outbuflen);
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|
return (error);
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}
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|
int
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mac_vnode_internalize_label(struct label *label, char *string)
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|
{
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int error;
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MAC_POLICY_INTERNALIZE(vnode, label, string);
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return (error);
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}
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void
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mac_devfs_update(struct mount *mp, struct devfs_dirent *de, struct vnode *vp)
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{
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MAC_POLICY_PERFORM_NOSLEEP(devfs_update, mp, de, de->de_label, vp,
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vp->v_label);
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}
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|
void
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mac_devfs_vnode_associate(struct mount *mp, struct devfs_dirent *de,
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struct vnode *vp)
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{
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MAC_POLICY_PERFORM_NOSLEEP(devfs_vnode_associate, mp, mp->mnt_label,
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de, de->de_label, vp, vp->v_label);
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}
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int
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mac_vnode_associate_extattr(struct mount *mp, struct vnode *vp)
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{
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int error;
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ASSERT_VOP_LOCKED(vp, "mac_vnode_associate_extattr");
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MAC_POLICY_CHECK(vnode_associate_extattr, mp, mp->mnt_label, vp,
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vp->v_label);
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return (error);
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}
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|
|
void
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mac_vnode_associate_singlelabel(struct mount *mp, struct vnode *vp)
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|
{
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MAC_POLICY_PERFORM_NOSLEEP(vnode_associate_singlelabel, mp,
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mp->mnt_label, vp, vp->v_label);
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}
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|
|
/*
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* Functions implementing extended-attribute backed labels for file systems
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|
* that support it.
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*
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|
* Where possible, we use EA transactions to make writes to multiple
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* attributes across difference policies mutually atomic. We allow work to
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* continue on file systems not supporting EA transactions, but generate a
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* printf warning.
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|
*/
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|
int
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mac_vnode_create_extattr(struct ucred *cred, struct mount *mp,
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struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
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|
{
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|
int error;
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ASSERT_VOP_LOCKED(dvp, "mac_vnode_create_extattr");
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|
ASSERT_VOP_LOCKED(vp, "mac_vnode_create_extattr");
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|
error = VOP_OPENEXTATTR(vp, cred, curthread);
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if (error == EOPNOTSUPP) {
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|
if (ea_warn_once == 0) {
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printf("Warning: transactions not supported "
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|
"in EA write.\n");
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ea_warn_once = 1;
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}
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} else if (error)
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return (error);
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MAC_POLICY_CHECK(vnode_create_extattr, cred, mp, mp->mnt_label, dvp,
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dvp->v_label, vp, vp->v_label, cnp);
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if (error) {
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VOP_CLOSEEXTATTR(vp, 0, NOCRED, curthread);
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return (error);
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}
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error = VOP_CLOSEEXTATTR(vp, 1, NOCRED, curthread);
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if (error == EOPNOTSUPP)
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error = 0;
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|
return (error);
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|
}
|
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|
|
static int
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mac_vnode_setlabel_extattr(struct ucred *cred, struct vnode *vp,
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struct label *intlabel)
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|
{
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|
int error;
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|
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ASSERT_VOP_LOCKED(vp, "mac_vnode_setlabel_extattr");
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error = VOP_OPENEXTATTR(vp, cred, curthread);
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if (error == EOPNOTSUPP) {
|
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if (ea_warn_once == 0) {
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printf("Warning: transactions not supported "
|
|
"in EA write.\n");
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ea_warn_once = 1;
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|
}
|
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} else if (error)
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|
return (error);
|
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|
|
MAC_POLICY_CHECK(vnode_setlabel_extattr, cred, vp, vp->v_label,
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intlabel);
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|
|
if (error) {
|
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VOP_CLOSEEXTATTR(vp, 0, NOCRED, curthread);
|
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return (error);
|
|
}
|
|
|
|
error = VOP_CLOSEEXTATTR(vp, 1, NOCRED, curthread);
|
|
if (error == EOPNOTSUPP)
|
|
error = 0;
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mac_vnode_execve_transition(struct ucred *old, struct ucred *new,
|
|
struct vnode *vp, struct label *interpvplabel, struct image_params *imgp)
|
|
{
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_execve_transition");
|
|
|
|
MAC_POLICY_PERFORM(vnode_execve_transition, old, new, vp,
|
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vp->v_label, interpvplabel, imgp, imgp->execlabel);
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|
}
|
|
|
|
int
|
|
mac_vnode_execve_will_transition(struct ucred *old, struct vnode *vp,
|
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struct label *interpvplabel, struct image_params *imgp)
|
|
{
|
|
int result;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_execve_will_transition");
|
|
|
|
result = 0;
|
|
/* No sleeping since the process lock will be held by the caller. */
|
|
MAC_POLICY_BOOLEAN_NOSLEEP(vnode_execve_will_transition, ||, old, vp,
|
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vp->v_label, interpvplabel, imgp, imgp->execlabel);
|
|
|
|
return (result);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_access, "struct ucred *",
|
|
"struct vnode *", "accmode_t");
|
|
|
|
int
|
|
mac_vnode_check_access(struct ucred *cred, struct vnode *vp, accmode_t accmode)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_access");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_access, cred, vp, vp->v_label, accmode);
|
|
MAC_CHECK_PROBE3(vnode_check_access, error, cred, vp, accmode);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(vnode_check_chdir, "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_chdir(struct ucred *cred, struct vnode *dvp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_chdir");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_chdir, cred, dvp, dvp->v_label);
|
|
MAC_CHECK_PROBE2(vnode_check_chdir, error, cred, dvp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(vnode_check_chroot, "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_chroot(struct ucred *cred, struct vnode *dvp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_chroot");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_chroot, cred, dvp, dvp->v_label);
|
|
MAC_CHECK_PROBE2(vnode_check_chroot, error, cred, dvp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_create, "struct ucred *",
|
|
"struct vnode *", "struct componentname *", "struct vattr *");
|
|
|
|
int
|
|
mac_vnode_check_create(struct ucred *cred, struct vnode *dvp,
|
|
struct componentname *cnp, struct vattr *vap)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_create");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_create, cred, dvp, dvp->v_label, cnp,
|
|
vap);
|
|
MAC_CHECK_PROBE4(vnode_check_create, error, cred, dvp, cnp, vap);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_deleteacl, "struct ucred *",
|
|
"struct vnode *", "acl_type_t");
|
|
|
|
int
|
|
mac_vnode_check_deleteacl(struct ucred *cred, struct vnode *vp,
|
|
acl_type_t type)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_deleteacl");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_deleteacl, cred, vp, vp->v_label, type);
|
|
MAC_CHECK_PROBE3(vnode_check_deleteacl, error, cred, vp, type);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_deleteextattr, "struct ucred *",
|
|
"struct vnode *", "int", "const char *");
|
|
|
|
int
|
|
mac_vnode_check_deleteextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace, const char *name)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_deleteextattr");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_deleteextattr, cred, vp, vp->v_label,
|
|
attrnamespace, name);
|
|
MAC_CHECK_PROBE4(vnode_check_deleteextattr, error, cred, vp,
|
|
attrnamespace, name);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_exec, "struct ucred *", "struct vnode *",
|
|
"struct image_params *");
|
|
|
|
int
|
|
mac_vnode_check_exec(struct ucred *cred, struct vnode *vp,
|
|
struct image_params *imgp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_exec");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_exec, cred, vp, vp->v_label, imgp,
|
|
imgp->execlabel);
|
|
MAC_CHECK_PROBE3(vnode_check_exec, error, cred, vp, imgp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_getacl, "struct ucred *",
|
|
"struct vnode *", "acl_type_t");
|
|
|
|
int
|
|
mac_vnode_check_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_getacl");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_getacl, cred, vp, vp->v_label, type);
|
|
MAC_CHECK_PROBE3(vnode_check_getacl, error, cred, vp, type);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_getextattr, "struct ucred *",
|
|
"struct vnode *", "int", "const char *");
|
|
|
|
int
|
|
mac_vnode_check_getextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace, const char *name)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_getextattr");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_getextattr, cred, vp, vp->v_label,
|
|
attrnamespace, name);
|
|
MAC_CHECK_PROBE4(vnode_check_getextattr, error, cred, vp,
|
|
attrnamespace, name);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_link, "struct ucred *", "struct vnode *",
|
|
"struct vnode *", "struct componentname *");
|
|
|
|
int
|
|
mac_vnode_check_link(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, struct componentname *cnp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_link");
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_link");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_link, cred, dvp, dvp->v_label, vp,
|
|
vp->v_label, cnp);
|
|
MAC_CHECK_PROBE4(vnode_check_link, error, cred, dvp, vp, cnp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_listextattr, "struct ucred *",
|
|
"struct vnode *", "int");
|
|
|
|
int
|
|
mac_vnode_check_listextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_listextattr");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_listextattr, cred, vp, vp->v_label,
|
|
attrnamespace);
|
|
MAC_CHECK_PROBE3(vnode_check_listextattr, error, cred, vp,
|
|
attrnamespace);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_lookup, "struct ucred *",
|
|
"struct vnode *", "struct componentname *");
|
|
|
|
int
|
|
mac_vnode_check_lookup(struct ucred *cred, struct vnode *dvp,
|
|
struct componentname *cnp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_lookup");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_lookup, cred, dvp, dvp->v_label, cnp);
|
|
MAC_CHECK_PROBE3(vnode_check_lookup, error, cred, dvp, cnp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_mmap, "struct ucred *", "struct vnode *",
|
|
"int", "int");
|
|
|
|
int
|
|
mac_vnode_check_mmap(struct ucred *cred, struct vnode *vp, int prot,
|
|
int flags)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_mmap");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_mmap, cred, vp, vp->v_label, prot, flags);
|
|
MAC_CHECK_PROBE4(vnode_check_mmap, error, cred, vp, prot, flags);
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mac_vnode_check_mmap_downgrade(struct ucred *cred, struct vnode *vp,
|
|
int *prot)
|
|
{
|
|
int result = *prot;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_mmap_downgrade");
|
|
|
|
MAC_POLICY_PERFORM(vnode_check_mmap_downgrade, cred, vp, vp->v_label,
|
|
&result);
|
|
|
|
*prot = result;
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_mprotect, "struct ucred *",
|
|
"struct vnode *", "int");
|
|
|
|
int
|
|
mac_vnode_check_mprotect(struct ucred *cred, struct vnode *vp, int prot)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_mprotect");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_mprotect, cred, vp, vp->v_label, prot);
|
|
MAC_CHECK_PROBE3(vnode_check_mprotect, error, cred, vp, prot);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_open, "struct ucred *", "struct vnode *",
|
|
"accmode_t");
|
|
|
|
int
|
|
mac_vnode_check_open(struct ucred *cred, struct vnode *vp, accmode_t accmode)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_open");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_open, cred, vp, vp->v_label, accmode);
|
|
MAC_CHECK_PROBE3(vnode_check_open, error, cred, vp, accmode);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_poll, "struct ucred *", "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_poll(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_poll");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_poll, active_cred, file_cred, vp,
|
|
vp->v_label);
|
|
MAC_CHECK_PROBE3(vnode_check_poll, error, active_cred, file_cred,
|
|
vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_read, "struct ucred *", "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_read(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_read");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_read, active_cred, file_cred, vp,
|
|
vp->v_label);
|
|
MAC_CHECK_PROBE3(vnode_check_read, error, active_cred, file_cred,
|
|
vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(vnode_check_readdir, "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_readdir(struct ucred *cred, struct vnode *dvp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_readdir");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_readdir, cred, dvp, dvp->v_label);
|
|
MAC_CHECK_PROBE2(vnode_check_readdir, error, cred, dvp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(vnode_check_readlink, "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_readlink(struct ucred *cred, struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_readlink");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_readlink, cred, vp, vp->v_label);
|
|
MAC_CHECK_PROBE2(vnode_check_readlink, error, cred, vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_relabel, "struct ucred *",
|
|
"struct vnode *", "struct label *");
|
|
|
|
static int
|
|
mac_vnode_check_relabel(struct ucred *cred, struct vnode *vp,
|
|
struct label *newlabel)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_relabel");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_relabel, cred, vp, vp->v_label, newlabel);
|
|
MAC_CHECK_PROBE3(vnode_check_relabel, error, cred, vp, newlabel);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_rename_from, "struct ucred *",
|
|
"struct vnode *", "struct vnode *", "struct componentname *");
|
|
|
|
int
|
|
mac_vnode_check_rename_from(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, struct componentname *cnp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_rename_from");
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_rename_from");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_rename_from, cred, dvp, dvp->v_label, vp,
|
|
vp->v_label, cnp);
|
|
MAC_CHECK_PROBE4(vnode_check_rename_from, error, cred, dvp, vp, cnp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_rename_to, "struct ucred *",
|
|
"struct vnode *", "struct vnode *", "struct componentname *");
|
|
|
|
int
|
|
mac_vnode_check_rename_to(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, int samedir, struct componentname *cnp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_rename_to");
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_rename_to");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_rename_to, cred, dvp, dvp->v_label, vp,
|
|
vp != NULL ? vp->v_label : NULL, samedir, cnp);
|
|
MAC_CHECK_PROBE4(vnode_check_rename_to, error, cred, dvp, vp, cnp);
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(vnode_check_revoke, "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_revoke(struct ucred *cred, struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_revoke");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_revoke, cred, vp, vp->v_label);
|
|
MAC_CHECK_PROBE2(vnode_check_revoke, error, cred, vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_setacl, "struct ucred *",
|
|
"struct vnode *", "acl_type_t", "struct acl *");
|
|
|
|
int
|
|
mac_vnode_check_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type,
|
|
struct acl *acl)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setacl");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setacl, cred, vp, vp->v_label, type, acl);
|
|
MAC_CHECK_PROBE4(vnode_check_setacl, error, cred, vp, type, acl);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_setextattr, "struct ucred *",
|
|
"struct vnode *", "int", "const char *");
|
|
|
|
int
|
|
mac_vnode_check_setextattr(struct ucred *cred, struct vnode *vp,
|
|
int attrnamespace, const char *name)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setextattr");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setextattr, cred, vp, vp->v_label,
|
|
attrnamespace, name);
|
|
MAC_CHECK_PROBE4(vnode_check_setextattr, error, cred, vp,
|
|
attrnamespace, name);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_setflags, "struct ucred *",
|
|
"struct vnode *", "u_long");
|
|
|
|
int
|
|
mac_vnode_check_setflags(struct ucred *cred, struct vnode *vp, u_long flags)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setflags");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setflags, cred, vp, vp->v_label, flags);
|
|
MAC_CHECK_PROBE3(vnode_check_setflags, error, cred, vp, flags);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_setmode, "struct ucred *",
|
|
"struct vnode *", "mode_t");
|
|
|
|
int
|
|
mac_vnode_check_setmode(struct ucred *cred, struct vnode *vp, mode_t mode)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setmode");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setmode, cred, vp, vp->v_label, mode);
|
|
MAC_CHECK_PROBE3(vnode_check_setmode, error, cred, vp, mode);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_setowner, "struct ucred *",
|
|
"struct vnode *", "uid_t", "gid_t");
|
|
|
|
int
|
|
mac_vnode_check_setowner(struct ucred *cred, struct vnode *vp, uid_t uid,
|
|
gid_t gid)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setowner");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setowner, cred, vp, vp->v_label, uid, gid);
|
|
MAC_CHECK_PROBE4(vnode_check_setowner, error, cred, vp, uid, gid);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_setutimes, "struct ucred *",
|
|
"struct vnode *", "struct timespec *", "struct timespec *");
|
|
|
|
int
|
|
mac_vnode_check_setutimes(struct ucred *cred, struct vnode *vp,
|
|
struct timespec atime, struct timespec mtime)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_setutimes");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_setutimes, cred, vp, vp->v_label, atime,
|
|
mtime);
|
|
MAC_CHECK_PROBE4(vnode_check_setutimes, error, cred, vp, &atime,
|
|
&mtime);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_stat, "struct ucred *", "struct ucred *",
|
|
"struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_stat(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_stat");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_stat, active_cred, file_cred, vp,
|
|
vp->v_label);
|
|
MAC_CHECK_PROBE3(vnode_check_stat, error, active_cred, file_cred,
|
|
vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE4(vnode_check_unlink, "struct ucred *",
|
|
"struct vnode *", "struct vnode *", "struct componentname *");
|
|
|
|
int
|
|
mac_vnode_check_unlink(struct ucred *cred, struct vnode *dvp,
|
|
struct vnode *vp, struct componentname *cnp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(dvp, "mac_vnode_check_unlink");
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_unlink");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_unlink, cred, dvp, dvp->v_label, vp,
|
|
vp->v_label, cnp);
|
|
MAC_CHECK_PROBE4(vnode_check_unlink, error, cred, dvp, vp, cnp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE3(vnode_check_write, "struct ucred *",
|
|
"struct ucred *", "struct vnode *");
|
|
|
|
int
|
|
mac_vnode_check_write(struct ucred *active_cred, struct ucred *file_cred,
|
|
struct vnode *vp)
|
|
{
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "mac_vnode_check_write");
|
|
|
|
MAC_POLICY_CHECK(vnode_check_write, active_cred, file_cred, vp,
|
|
vp->v_label);
|
|
MAC_CHECK_PROBE3(vnode_check_write, error, active_cred, file_cred,
|
|
vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mac_vnode_relabel(struct ucred *cred, struct vnode *vp,
|
|
struct label *newlabel)
|
|
{
|
|
|
|
MAC_POLICY_PERFORM(vnode_relabel, cred, vp, vp->v_label, newlabel);
|
|
}
|
|
|
|
void
|
|
mac_mount_create(struct ucred *cred, struct mount *mp)
|
|
{
|
|
|
|
MAC_POLICY_PERFORM(mount_create, cred, mp, mp->mnt_label);
|
|
}
|
|
|
|
MAC_CHECK_PROBE_DEFINE2(mount_check_stat, "struct ucred *",
|
|
"struct mount *");
|
|
|
|
int
|
|
mac_mount_check_stat(struct ucred *cred, struct mount *mount)
|
|
{
|
|
int error;
|
|
|
|
MAC_POLICY_CHECK_NOSLEEP(mount_check_stat, cred, mount, mount->mnt_label);
|
|
MAC_CHECK_PROBE2(mount_check_stat, error, cred, mount);
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mac_devfs_create_device(struct ucred *cred, struct mount *mp,
|
|
struct cdev *dev, struct devfs_dirent *de)
|
|
{
|
|
|
|
MAC_POLICY_PERFORM_NOSLEEP(devfs_create_device, cred, mp, dev, de,
|
|
de->de_label);
|
|
}
|
|
|
|
void
|
|
mac_devfs_create_symlink(struct ucred *cred, struct mount *mp,
|
|
struct devfs_dirent *dd, struct devfs_dirent *de)
|
|
{
|
|
|
|
MAC_POLICY_PERFORM_NOSLEEP(devfs_create_symlink, cred, mp, dd,
|
|
dd->de_label, de, de->de_label);
|
|
}
|
|
|
|
void
|
|
mac_devfs_create_directory(struct mount *mp, char *dirname, int dirnamelen,
|
|
struct devfs_dirent *de)
|
|
{
|
|
|
|
MAC_POLICY_PERFORM_NOSLEEP(devfs_create_directory, mp, dirname,
|
|
dirnamelen, de, de->de_label);
|
|
}
|
|
|
|
/*
|
|
* Implementation of VOP_SETLABEL() that relies on extended attributes to
|
|
* store label data. Can be referenced by filesystems supporting extended
|
|
* attributes.
|
|
*/
|
|
int
|
|
vop_stdsetlabel_ea(struct vop_setlabel_args *ap)
|
|
{
|
|
struct vnode *vp = ap->a_vp;
|
|
struct label *intlabel = ap->a_label;
|
|
int error;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea");
|
|
|
|
if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0)
|
|
return (EOPNOTSUPP);
|
|
|
|
error = mac_vnode_setlabel_extattr(ap->a_cred, vp, intlabel);
|
|
if (error)
|
|
return (error);
|
|
|
|
mac_vnode_relabel(ap->a_cred, vp, intlabel);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred)
|
|
{
|
|
int error;
|
|
|
|
if (vp->v_mount == NULL) {
|
|
/* printf("vn_setlabel: null v_mount\n"); */
|
|
if (vp->v_type != VNON)
|
|
printf("vn_setlabel: null v_mount with non-VNON\n");
|
|
return (EBADF);
|
|
}
|
|
|
|
if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0)
|
|
return (EOPNOTSUPP);
|
|
|
|
/*
|
|
* Multi-phase commit. First check the policies to confirm the
|
|
* change is OK. Then commit via the filesystem. Finally, update
|
|
* the actual vnode label.
|
|
*
|
|
* Question: maybe the filesystem should update the vnode at the end
|
|
* as part of VOP_SETLABEL()?
|
|
*/
|
|
error = mac_vnode_check_relabel(cred, vp, intlabel);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* VADMIN provides the opportunity for the filesystem to make
|
|
* decisions about who is and is not able to modify labels and
|
|
* protections on files. This might not be right. We can't assume
|
|
* VOP_SETLABEL() will do it, because we might implement that as part
|
|
* of vop_stdsetlabel_ea().
|
|
*/
|
|
error = VOP_ACCESS(vp, VADMIN, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = VOP_SETLABEL(vp, intlabel, cred, curthread);
|
|
if (error)
|
|
return (error);
|
|
|
|
return (0);
|
|
}
|