c1ff2d9baf
kernel access control. Modify procfs so that (when mounted multilabel) it exports process MAC labels as the vnode labels of procfs vnodes associated with processes. Approved by: des Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/*-
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* Copyright (c) 2002 Network Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed in part by NAI Labs, the Security Research
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* Division of Network Associates, Inc. under DARPA/SPAWAR contract
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* N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS research program.
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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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
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* 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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* $FreeBSD$
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*/
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#include "opt_mac.h"
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mac.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/ucred.h>
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#include <sys/vnode.h>
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#include <fs/pseudofs/pseudofs.h>
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#include <fs/procfs/procfs.h>
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int
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procfs_piddir_refreshlabel(PFS_REFRESHLABEL_ARGS)
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{
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#ifdef MAC
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if (p == NULL)
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mac_update_vnode_from_mount(vp, vp->v_mount);
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else {
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PROC_LOCK(p);
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mac_update_procfsvnode(vp, p->p_ucred);
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PROC_UNLOCK(p);
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}
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return (0);
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#else
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return (EOPNOTSUPP);
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#endif
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}
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