6706552ea6
The recommended practice for `.Os` on FreeBSD is to not specify any arguments. The correct OS name is used automatically. Oddly enough, on the Linux distro I tested this on (CentOS 7), the man pager defaulted to displaying "BSD" as the OS rather than "Linux". To accommodate this, tack " Linux" back on in an install hook on Linux. This is much simpler than removing it for FreeBSD when vendored in the base system. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #10760
373 lines
11 KiB
Groff
373 lines
11 KiB
Groff
.\"
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.\" CDDL HEADER START
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.\"
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.\" The contents of this file are subject to the terms of the
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.\" Common Development and Distribution License (the "License").
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.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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.\" or http://www.opensolaris.org/os/licensing.
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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.\" If applicable, add the following below this CDDL HEADER, with the
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.\" fields enclosed by brackets "[]" replaced with your own identifying
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.\" information: Portions Copyright [yyyy] [name of copyright owner]
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.\"
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.\" CDDL HEADER END
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.\"
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.\"
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.\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
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.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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.\" Copyright (c) 2011, 2019 by Delphix. All rights reserved.
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.\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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.\" Copyright (c) 2014, Joyent, Inc. All rights reserved.
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.\" Copyright (c) 2014 by Adam Stevko. All rights reserved.
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.\" Copyright (c) 2014 Integros [integros.com]
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.\" Copyright 2019 Richard Laager. All rights reserved.
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.\" Copyright 2018 Nexenta Systems, Inc.
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.\" Copyright 2019 Joyent, Inc.
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.\"
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.Dd June 30, 2019
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.Dt ZFS-ALLOW 8
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.Os
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.Sh NAME
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.Nm zfs Ns Pf - Cm allow
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.Nd Delegates ZFS administration permission for the file systems to non-privileged users.
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.Sh SYNOPSIS
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.Nm
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.Cm allow
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.Op Fl dglu
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.Ar user Ns | Ns Ar group Ns Oo , Ns Ar user Ns | Ns Ar group Oc Ns ...
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm allow
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.Op Fl dl
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.Fl e Ns | Ns Sy everyone
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm allow
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.Fl c
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm allow
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.Fl s No @ Ns Ar setname
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm unallow
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.Op Fl dglru
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.Ar user Ns | Ns Ar group Ns Oo , Ns Ar user Ns | Ns Ar group Oc Ns ...
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm unallow
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.Op Fl dlr
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.Fl e Ns | Ns Sy everyone
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm unallow
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.Op Fl r
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.Fl c
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm unallow
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.Op Fl r
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.Fl s No @ Ns Ar setname
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Sh DESCRIPTION
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.Bl -tag -width ""
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.It Xo
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.Nm
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.Cm allow
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Displays permissions that have been delegated on the specified filesystem or
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volume.
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See the other forms of
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.Nm zfs Cm allow
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for more information.
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.Pp
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Delegations are supported under Linux with the exception of
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.Sy mount ,
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.Sy unmount ,
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.Sy mountpoint ,
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.Sy canmount ,
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.Sy rename ,
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and
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.Sy share .
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These permissions cannot be delegated because the Linux
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.Xr mount 8
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command restricts modifications of the global namespace to the root user.
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.It Xo
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.Nm
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.Cm allow
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.Op Fl dglu
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.Ar user Ns | Ns Ar group Ns Oo , Ns Ar user Ns | Ns Ar group Oc Ns ...
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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.It Xo
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.Nm
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.Cm allow
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.Op Fl dl
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.Fl e Ns | Ns Sy everyone
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Delegates ZFS administration permission for the file systems to non-privileged
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users.
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.Bl -tag -width "-d"
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.It Fl d
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Allow only for the descendent file systems.
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.It Fl e Ns | Ns Sy everyone
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Specifies that the permissions be delegated to everyone.
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.It Fl g Ar group Ns Oo , Ns Ar group Oc Ns ...
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Explicitly specify that permissions are delegated to the group.
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.It Fl l
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Allow
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.Qq locally
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only for the specified file system.
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.It Fl u Ar user Ns Oo , Ns Ar user Oc Ns ...
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Explicitly specify that permissions are delegated to the user.
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.It Ar user Ns | Ns Ar group Ns Oo , Ns Ar user Ns | Ns Ar group Oc Ns ...
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Specifies to whom the permissions are delegated.
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Multiple entities can be specified as a comma-separated list.
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If neither of the
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.Fl gu
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options are specified, then the argument is interpreted preferentially as the
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keyword
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.Sy everyone ,
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then as a user name, and lastly as a group name.
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To specify a user or group named
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.Qq everyone ,
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use the
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.Fl g
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or
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.Fl u
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options.
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To specify a group with the same name as a user, use the
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.Fl g
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options.
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.It Xo
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Xc
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The permissions to delegate.
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Multiple permissions may be specified as a comma-separated list.
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Permission names are the same as ZFS subcommand and property names.
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See the property list below.
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Property set names, which begin with
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.Sy @ ,
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may be specified.
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See the
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.Fl s
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form below for details.
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.El
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.Pp
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If neither of the
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.Fl dl
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options are specified, or both are, then the permissions are allowed for the
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file system or volume, and all of its descendents.
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.Pp
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Permissions are generally the ability to use a ZFS subcommand or change a ZFS
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property.
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The following permissions are available:
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.Bd -literal
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NAME TYPE NOTES
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allow subcommand Must also have the permission that is
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being allowed
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clone subcommand Must also have the 'create' ability and
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'mount' ability in the origin file system
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create subcommand Must also have the 'mount' ability.
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Must also have the 'refreservation' ability to
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create a non-sparse volume.
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destroy subcommand Must also have the 'mount' ability
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diff subcommand Allows lookup of paths within a dataset
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given an object number, and the ability
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to create snapshots necessary to
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'zfs diff'.
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load-key subcommand Allows loading and unloading of encryption key
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(see 'zfs load-key' and 'zfs unload-key').
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change-key subcommand Allows changing an encryption key via
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'zfs change-key'.
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mount subcommand Allows mount/umount of ZFS datasets
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promote subcommand Must also have the 'mount' and 'promote'
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ability in the origin file system
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receive subcommand Must also have the 'mount' and 'create'
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ability
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rename subcommand Must also have the 'mount' and 'create'
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ability in the new parent
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rollback subcommand Must also have the 'mount' ability
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send subcommand
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share subcommand Allows sharing file systems over NFS
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or SMB protocols
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snapshot subcommand Must also have the 'mount' ability
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groupquota other Allows accessing any groupquota@...
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property
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groupused other Allows reading any groupused@... property
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userprop other Allows changing any user property
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userquota other Allows accessing any userquota@...
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property
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userused other Allows reading any userused@... property
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projectobjquota other Allows accessing any projectobjquota@...
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property
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projectquota other Allows accessing any projectquota@... property
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projectobjused other Allows reading any projectobjused@... property
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projectused other Allows reading any projectused@... property
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aclinherit property
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acltype property
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atime property
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canmount property
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casesensitivity property
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checksum property
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compression property
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copies property
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devices property
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exec property
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filesystem_limit property
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mountpoint property
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nbmand property
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normalization property
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primarycache property
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quota property
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readonly property
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recordsize property
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refquota property
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refreservation property
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reservation property
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secondarycache property
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setuid property
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sharenfs property
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sharesmb property
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snapdir property
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snapshot_limit property
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utf8only property
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version property
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volblocksize property
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volsize property
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vscan property
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xattr property
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zoned property
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.Ed
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.It Xo
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.Nm
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.Cm allow
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.Fl c
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Sets
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.Qq create time
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permissions.
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These permissions are granted
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.Pq locally
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to the creator of any newly-created descendent file system.
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.It Xo
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.Nm
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.Cm allow
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.Fl s No @ Ns Ar setname
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.Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ...
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Defines or adds permissions to a permission set.
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The set can be used by other
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.Nm zfs Cm allow
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commands for the specified file system and its descendents.
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Sets are evaluated dynamically, so changes to a set are immediately reflected.
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Permission sets follow the same naming restrictions as ZFS file systems, but the
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name must begin with
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.Sy @ ,
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and can be no more than 64 characters long.
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.It Xo
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.Nm
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.Cm unallow
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.Op Fl dglru
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.Ar user Ns | Ns Ar group Ns Oo , Ns Ar user Ns | Ns Ar group Oc Ns ...
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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.It Xo
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.Nm
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.Cm unallow
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.Op Fl dlr
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.Fl e Ns | Ns Sy everyone
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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.It Xo
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.Nm
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.Cm unallow
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.Op Fl r
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.Fl c
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Removes permissions that were granted with the
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.Nm zfs Cm allow
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command.
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No permissions are explicitly denied, so other permissions granted are still in
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effect.
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For example, if the permission is granted by an ancestor.
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If no permissions are specified, then all permissions for the specified
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.Ar user ,
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.Ar group ,
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or
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.Sy everyone
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are removed.
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Specifying
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.Sy everyone
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.Po or using the
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.Fl e
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option
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.Pc
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only removes the permissions that were granted to everyone, not all permissions
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for every user and group.
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See the
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.Nm zfs Cm allow
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command for a description of the
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.Fl ldugec
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options.
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.Bl -tag -width "-r"
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.It Fl r
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Recursively remove the permissions from this file system and all descendents.
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.El
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.It Xo
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.Nm
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.Cm unallow
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.Op Fl r
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.Fl s No @ Ns Ar setname
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.Oo Ar perm Ns | Ns @ Ns Ar setname Ns Oo , Ns Ar perm Ns | Ns @ Ns
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.Ar setname Oc Ns ... Oc
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Removes permissions from a permission set.
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If no permissions are specified, then all permissions are removed, thus removing
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the set entirely.
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.El
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