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The vnconfig program.
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svn path=/head/; revision=4966
6
usr.sbin/vnconfig/Makefile
Normal file
6
usr.sbin/vnconfig/Makefile
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@ -0,0 +1,6 @@
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# $Id: Makefile,v 1.2 1993/12/23 07:04:31 cgd Exp $
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PROG= vnconfig
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MAN8= vnconfig.8
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.include <bsd.prog.mk>
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165
usr.sbin/vnconfig/vnconfig.8
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165
usr.sbin/vnconfig/vnconfig.8
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@ -0,0 +1,165 @@
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.\" Copyright (c) 1993 University of Utah.
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.\" Copyright (c) 1980, 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
|
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.\" the Systems Programming Group of the University of Utah Computer
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.\" Science Department.
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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
|
||||
.\" are met:
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in the
|
||||
.\" documentation and/or other materials provided with the distribution.
|
||||
.\" 3. All advertising materials mentioning features or use of this software
|
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.\" must display the following acknowledgement:
|
||||
.\" This product includes software developed by the University of
|
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
|
||||
.\" may be used to endorse or promote products derived from this software
|
||||
.\" without specific prior written permission.
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||||
.\"
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||||
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\" @(#)vnconfig.8 8.1 (Berkeley) 6/5/93
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.\"
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.Dd July 8, 1993
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.Dt VNCONFIG 8
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.Os BSD 4
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.Sh NAME
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.Nm vnconfig
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.Nd configure and enable vnode disks
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.Sh SYNOPSIS
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.Nm vnconfig
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.Op Fl cdeuv
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.Ar special_file Ar regular_file
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.Oo Ar feature Oc
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.Nm vnconfig
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.Fl a
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.Op Fl cdeuv
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.Op Fl f Ar config_file
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.Sh DESCRIPTION
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The
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.Nm vnconfig
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command configures and enables vnode pseudo disk devices.
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The first form of the command will associate the special file
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.Ar special_file
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with the regular file
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.Ar regular_file
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allowing the latter to be accessed as though it were a disk.
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Hence a regular file within the filesystem can be used for swapping
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or can contain a filesystem that is mounted in the name space.
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.Pp
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Options indicate an action to be performed:
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.Bl -tag -width indent
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.It Fl c
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Configures the device.
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If successful, references to
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.Ar special_file
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will access the contents of
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.Ar regular_file .
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.It Fl e
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Configures the device and enables any
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.Ar feature
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that was specified.
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If no feature was specified,
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.Fl e
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is the same as
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.Fl c .
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.It Fl d
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Disables (if possible) the specified feature.
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.It Fl u
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Disables and ``unconfigures'' the device.
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.It Fl v
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Print messages to stdout describing actions taken.
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.El
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.Pp
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If no action option is given,
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.Fl c
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is assumed.
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.Pp
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The
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.Ar feature
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argument specifies a feature that can be enabled via the
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.Fl e
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option:
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.Bl -tag -width indent
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.It Dv swap
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Swapping is enabled on the special file.
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See
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.Xr swapon 2 .
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.It Dv Pf mountro= Pa mount_point
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The special file is mounted read-only on
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.Ar mount_point .
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See
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.Xr mount 2 .
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.It Dv Pf mountrw= Pa mount_point
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The special file is mounted read-write on
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.Ar mount_point .
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See
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.Xr mount 2 .
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.It Dv Pf mount= Pa mount_point
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Same as ``mountrw=''.
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.El
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.Pp
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The second (-a) form of the command reads a command file and performs the
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specified actions for each device/file pair.
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With
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.Fl f
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it reads the indicated configuration file
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.Ar config_file .
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Otherwise it uses a default configuration file.
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A configuration file contains one line per device/file pair in the form:
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.Bd -literal
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special_file regular_file [ feature ]
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.Ed
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.Pp
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where fields are seperated by white space.
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The previously described action options serve to configure, enable,
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disable or unconfigure all devices in the configuration file.
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.Sh FILES
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.Bl -tag -width /etc/vntab -compact
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.It Pa /etc/vntab
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default configuration file for
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.Fl a
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option.
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.El
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.Sh EXAMPLES
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.Pp
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.Dl vnconfig /dev/vnd0c /tmp/diskimage
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.Pp
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Configures the vnode disk
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.Pa vnd0c .
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.Pp
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.Dl vnconfig -e /dev/vnd0c /var/swapfile swap
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.Pp
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Configures
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.Pa vnd0c
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and enables swapping on it.
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.Pp
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.Dl vnconfig -d /dev/vnd0c myfilesystem mount=/mnt
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.Pp
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Unmounts (disables)
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.Pa vnd0c .
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.Pp
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.Dl vnconfig -ae
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.Pp
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Configures and enables all devices specified in
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.Pa /etc/vntab .
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.Sh SEE ALSO
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.Xr swapon 2 ,
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.Xr mount 2 ,
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.Xr unmount 2 .
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368
usr.sbin/vnconfig/vnconfig.c
Normal file
368
usr.sbin/vnconfig/vnconfig.c
Normal file
@ -0,0 +1,368 @@
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/*
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* Copyright (c) 1993 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
|
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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
|
||||
* are met:
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
|
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* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* 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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* from: Utah $Hdr: vnconfig.c 1.1 93/12/15$
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*
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* @(#)vnconfig.c 8.1 (Berkeley) 12/15/93
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/vnioctl.h>
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#define MAXVNDISK 16
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#define LINESIZE 1024
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struct vndisk {
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char *dev;
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char *file;
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int flags;
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char *oarg;
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} vndisks[MAXVNDISK];
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#define VN_CONFIG 0x01
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#define VN_UNCONFIG 0x02
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#define VN_ENABLE 0x04
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#define VN_DISABLE 0x08
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#define VN_SWAP 0x10
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#define VN_MOUNTRO 0x20
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#define VN_MOUNTRW 0x40
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#define VN_IGNORE 0x80
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int nvndisks;
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int all = 0;
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int verbose = 0;
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char *configfile;
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char *pname;
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char *malloc(), *rawdevice(), *rindex();
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main(argc, argv)
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char **argv;
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{
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extern int optind, optopt, opterr;
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extern char *optarg;
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register int i, rv;
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int flags = 0;
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pname = argv[0];
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configfile = _PATH_VNTAB;
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while ((i = getopt(argc, argv, "acdef:uv")) != EOF)
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switch (i) {
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/* all -- use config file */
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case 'a':
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all++;
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break;
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/* configure */
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case 'c':
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flags |= VN_CONFIG;
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flags &= ~VN_UNCONFIG;
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break;
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/* disable */
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case 'd':
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flags |= VN_DISABLE;
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flags &= ~VN_ENABLE;
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break;
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/* enable */
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case 'e':
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flags |= (VN_ENABLE|VN_CONFIG);
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flags &= ~(VN_DISABLE|VN_UNCONFIG);
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break;
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/* alternate config file */
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case 'f':
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configfile = optarg;
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break;
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/* unconfigure */
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case 'u':
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flags |= (VN_DISABLE|VN_UNCONFIG);
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flags &= ~(VN_ENABLE|VN_CONFIG);
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break;
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/* verbose */
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case 'v':
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verbose++;
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break;
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default:
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fprintf(stderr, "invalid option '%c'\n", optopt);
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usage();
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}
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if (flags == 0)
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flags = VN_CONFIG;
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if (all)
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readconfig(flags);
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else {
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if (argc < optind + 1)
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usage();
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vndisks[0].dev = argv[optind++];
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vndisks[0].file = argv[optind++];
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vndisks[0].flags = flags;
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if (optind < argc)
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getoptions(&vndisks[0], argv[optind]);
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nvndisks = 1;
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}
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rv = 0;
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for (i = 0; i < nvndisks; i++)
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rv += config(&vndisks[i]);
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exit(rv);
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}
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config(vnp)
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struct vndisk *vnp;
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{
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char *dev, *file, *oarg;
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int flags;
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struct vn_ioctl vnio;
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register int rv;
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char *rdev;
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FILE *f;
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extern int errno;
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dev = vnp->dev;
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file = vnp->file;
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flags = vnp->flags;
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oarg = vnp->oarg;
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if (flags & VN_IGNORE)
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return(0);
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rdev = rawdevice(dev);
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f = fopen(rdev, "rw");
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if (f == NULL) {
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perror("open");
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return(1);
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}
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vnio.vn_file = file;
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/*
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* Disable the device
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*/
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if (flags & VN_DISABLE) {
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if (flags & (VN_MOUNTRO|VN_MOUNTRW)) {
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rv = unmount(oarg, 0);
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if (rv) {
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if (errno == EBUSY)
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flags &= ~VN_UNCONFIG;
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if ((flags & VN_UNCONFIG) == 0)
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perror("umount");
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} else if (verbose)
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printf("%s: unmounted\n", dev);
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}
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}
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/*
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* Clear (un-configure) the device
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*/
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if (flags & VN_UNCONFIG) {
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rv = ioctl(fileno(f), VNIOCCLR, &vnio);
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if (rv) {
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if (errno == ENODEV) {
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if (verbose)
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printf("%s: not configured\n", dev);
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rv = 0;
|
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} else
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perror("VNIOCCLR");
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} else if (verbose)
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printf("%s: cleared\n", dev);
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}
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/*
|
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* Configure the device
|
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*/
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if (flags & VN_CONFIG) {
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rv = ioctl(fileno(f), VNIOCSET, &vnio);
|
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if (rv) {
|
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perror("VNIOCSET");
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flags &= ~VN_ENABLE;
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} else if (verbose)
|
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printf("%s: %d bytes on %s\n",
|
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dev, vnio.vn_size, file);
|
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}
|
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/*
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* Enable special functions on the device
|
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*/
|
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if (flags & VN_ENABLE) {
|
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if (flags & VN_SWAP) {
|
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rv = swapon(dev);
|
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if (rv)
|
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perror("swapon");
|
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else if (verbose)
|
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printf("%s: swapping enabled\n", dev);
|
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}
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if (flags & (VN_MOUNTRO|VN_MOUNTRW)) {
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struct ufs_args args;
|
||||
int mflags;
|
||||
|
||||
args.fspec = dev;
|
||||
mflags = (flags & VN_MOUNTRO) ? MNT_RDONLY : 0;
|
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rv = mount(MOUNT_UFS, oarg, mflags, &args);
|
||||
if (rv)
|
||||
perror("mount");
|
||||
else if (verbose)
|
||||
printf("%s: mounted on %s\n", dev, oarg);
|
||||
}
|
||||
}
|
||||
done:
|
||||
fclose(f);
|
||||
fflush(stdout);
|
||||
return(rv < 0);
|
||||
}
|
||||
|
||||
#define EOL(c) ((c) == '\0' || (c) == '\n')
|
||||
#define WHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
|
||||
|
||||
readconfig(flags)
|
||||
int flags;
|
||||
{
|
||||
char buf[LINESIZE];
|
||||
FILE *f;
|
||||
register char *cp, *sp;
|
||||
register int ix;
|
||||
|
||||
f = fopen(configfile, "r");
|
||||
if (f == NULL) {
|
||||
perror(configfile);
|
||||
exit(1);
|
||||
}
|
||||
ix = 0;
|
||||
while (fgets(buf, LINESIZE, f) != NULL) {
|
||||
cp = buf;
|
||||
if (*cp == '#')
|
||||
continue;
|
||||
while (!EOL(*cp) && WHITE(*cp))
|
||||
cp++;
|
||||
if (EOL(*cp))
|
||||
continue;
|
||||
sp = cp;
|
||||
while (!EOL(*cp) && !WHITE(*cp))
|
||||
cp++;
|
||||
if (EOL(*cp))
|
||||
continue;
|
||||
*cp++ = '\0';
|
||||
vndisks[ix].dev = malloc(cp - sp);
|
||||
strcpy(vndisks[ix].dev, sp);
|
||||
while (!EOL(*cp) && WHITE(*cp))
|
||||
cp++;
|
||||
if (EOL(*cp))
|
||||
continue;
|
||||
sp = cp;
|
||||
while (!EOL(*cp) && !WHITE(*cp))
|
||||
cp++;
|
||||
*cp++ = '\0';
|
||||
vndisks[ix].file = malloc(cp - sp);
|
||||
strcpy(vndisks[ix].file, sp);
|
||||
while (!EOL(*cp) && WHITE(*cp))
|
||||
cp++;
|
||||
vndisks[ix].flags = flags;
|
||||
if (!EOL(*cp)) {
|
||||
sp = cp;
|
||||
while (!EOL(*cp) && !WHITE(*cp))
|
||||
cp++;
|
||||
*cp++ = '\0';
|
||||
getoptions(&vndisks[ix], sp);
|
||||
}
|
||||
nvndisks++;
|
||||
ix++;
|
||||
}
|
||||
}
|
||||
|
||||
getoptions(vnp, fstr)
|
||||
struct vndisk *vnp;
|
||||
char *fstr;
|
||||
{
|
||||
int flags = 0;
|
||||
char *oarg = NULL;
|
||||
|
||||
if (strcmp(fstr, "swap") == 0)
|
||||
flags |= VN_SWAP;
|
||||
else if (strncmp(fstr, "mount=", 6) == 0) {
|
||||
flags |= VN_MOUNTRW;
|
||||
oarg = &fstr[6];
|
||||
} else if (strncmp(fstr, "mountrw=", 8) == 0) {
|
||||
flags |= VN_MOUNTRW;
|
||||
oarg = &fstr[8];
|
||||
} else if (strncmp(fstr, "mountro=", 8) == 0) {
|
||||
flags |= VN_MOUNTRO;
|
||||
oarg = &fstr[8];
|
||||
} else if (strcmp(fstr, "ignore") == 0)
|
||||
flags |= VN_IGNORE;
|
||||
vnp->flags |= flags;
|
||||
if (oarg) {
|
||||
vnp->oarg = malloc(strlen(oarg) + 1);
|
||||
strcpy(vnp->oarg, oarg);
|
||||
} else
|
||||
vnp->oarg = NULL;
|
||||
}
|
||||
|
||||
char *
|
||||
rawdevice(dev)
|
||||
char *dev;
|
||||
{
|
||||
register char *rawbuf, *dp, *ep;
|
||||
struct stat sb;
|
||||
int len;
|
||||
|
||||
len = strlen(dev);
|
||||
rawbuf = malloc(len + 2);
|
||||
strcpy(rawbuf, dev);
|
||||
if (stat(rawbuf, &sb) != 0 || !S_ISCHR(sb.st_mode)) {
|
||||
dp = rindex(rawbuf, '/');
|
||||
if (dp) {
|
||||
for (ep = &rawbuf[len]; ep > dp; --ep)
|
||||
*(ep+1) = *ep;
|
||||
*++ep = 'r';
|
||||
}
|
||||
}
|
||||
return (rawbuf);
|
||||
}
|
||||
|
||||
usage()
|
||||
{
|
||||
fprintf(stderr, "usage: %s [-acdefuv] [special-device file]\n",
|
||||
pname);
|
||||
exit(1);
|
||||
}
|
Loading…
Reference in New Issue
Block a user