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176 lines
4.3 KiB
Groff
176 lines
4.3 KiB
Groff
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.\" Copyright (c) 2002 Networks Associates Technology, Inc.
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.\" All rights reserved.
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.\"
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.\" This software was developed for the FreeBSD Project by Chris
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.\" Costello at Safeport Network Services and NAI Labs, the Security
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.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR
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.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
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.\" 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 AUTHORS 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 AUTHORS 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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.Dd OCTOBER 11, 2002
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.Dt UGIDFW 8
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.Sh NAME
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.Nm ugidfw
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.Nd firewall-like access controls for file system objects
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.Sh SYNOPSIS
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.Nm
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.Cm list
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.Nm
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.Cm set
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.Ar rulenum
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.Cm subject
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.Op Cm not
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.Op uid Ar uid
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.Op gid Ar gid
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.Cm object
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.Op Cm not
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.Op Cm uid Ar uid
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.Op Cm gid Ar gid
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.Cm mode
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.Ar arswxn
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.Nm
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.Cm remove
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.Ar rulenum
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.Sh DESCRIPTION
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The
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.Nm
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command provides an
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.Xr ipfw 8 Ns -like
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interface to manage accesses to file system objects by UID and GID,
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supported by the
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.Nm mac_bsdextended
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.Xr mac 9
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policy.
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.Pp
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The arguments are as follows:
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.Bl -tag -width 6n -offset indent
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.It Cm list
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Produces a list of all the current
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.Nm
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rules in the system.
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.It Xo
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.Cm set Ar rulenum
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.Cm subject
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.Op Cm not
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.Op uid Ar uid
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.Op gid Ar gid
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.Cm object
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.Op Cm not
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.Op Cm uid Ar uid
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.Op Cm gid Ar gid
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.Cm mode
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.Ar arswxn
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.Xc
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Add a new rule or modify an existing rule.
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The arguments are as follows:
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.Bl -tag -width 7n
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.It Ar rulenum
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Rule number.
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Entries with a lower rule number
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are applied first;
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placing the most frequently-matched rules at the beginning of the list
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(i.e. lower-numbered)
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will yield a slight performance increase.
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.It Xo
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.Cm subject
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.Op Cm not
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.Op Cm uid Ar uid
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.Op Cm gid Ar gid
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.Xc
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Subjects performing an operation must match
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(or, if
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.Dq not
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is specified, must
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.Em not
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match)
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the user and group specified by
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.Ar uid
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and/or
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.Ar gid
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for the rule to be applied.
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.It Xo
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.Cm object
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.Op Cm not
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.Op Cm uid Ar uid
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.Op Cm gid Ar gid
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.Xc
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Objects must be owned by
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(or, if
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.Dq not
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is specified, must
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.Em not
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be owned by)
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the user and/or group specified by
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.Ar uid
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and/or
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.Ar gid
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for the rule to be applied.
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.It Cm mode Ar arswxn
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Similar to
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.Xr chmod 1 ,
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each character represents an access mode.
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If the rule applies,
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the specified access permissions are enforced
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for the object.
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When a character is specified in the rule,
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the rule will allow for the operation.
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Conversely, not including it will cause the operation
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to be denied.
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The definitions of each character are as follows:
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.Bl -tag -width 3n -compact -offset indent
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.It Sq a
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Administrative operations
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.It Sq r
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Read access
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.It Sq s
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Access to file attributes
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.It Sq w
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Write access
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.It Sq x
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Execute access
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.It Sq n
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None
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.El
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.El
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.It Cd remove Ar rulenum
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Disable and remove the rule with the specified rule number.
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.El
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.Sh SEE ALSO
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.Xr mac 9
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Fx 5.0 .
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.Sh AUTHORS
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This software was contributed to the
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.Fx
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Project by NAI Labs, the Security Research Division of Network Associates Inc.
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under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
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as part of the DARPA CHATS research program.
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