4cfe5ad8b3
It's useful for how to mount an iso file via loopback. Reviewed by: jilles Approved by: bcr (mentor) Differential Revision: https://reviews.freebsd.org/D16067
163 lines
4.8 KiB
Groff
163 lines
4.8 KiB
Groff
.\" Copyright (c) 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software donated to Berkeley by
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.\" Christopher G. Demetriou.
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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. 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
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.\" 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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.\" @(#)mount_cd9660.8 8.3 (Berkeley) 3/27/94
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.\" $FreeBSD$
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.\"
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.Dd August 11, 2018
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.Dt MOUNT_CD9660 8
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.Os
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.Sh NAME
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.Nm mount_cd9660
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.Nd mount an ISO-9660 file system
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.Sh SYNOPSIS
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.Nm
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.Op Fl begjrv
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.Op Fl C Ar charset
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.Op Fl o Ar options
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.Op Fl s Ar startsector
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.Ar special node
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.Sh DESCRIPTION
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The
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.Nm
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utility attaches the ISO-9660 file system residing on the device
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.Pa special
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to the global file system namespace at the location indicated by
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.Pa node .
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This command is normally executed by
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.Xr mount 8
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at boot time.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl b
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Relax checking for Supplementary Volume Descriptor Flags field
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which is set to a wrong value on some Joliet formatted disks.
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.It Fl e
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Enable the use of extended attributes.
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.It Fl g
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Do not strip version numbers on files.
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(By default, if there are files with different version numbers on the disk,
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only the last one will be listed.)
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In either case, files may be opened without explicitly stating a
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version number.
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.It Fl j
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Do not use any Joliet extensions included in the file system.
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.It Fl o
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Options are specified with a
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.Fl o
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flag followed by a comma separated string of options.
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See the
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.Xr mount 8
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man page for possible options and their meanings.
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The following cd9660 specific options are available:
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.Pp
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.Bl -tag -width "brokenjoliet" -compact
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.It Cm extatt
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Same as
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.Fl e .
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.It Cm gens
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Same as
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.Fl g .
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.It Cm nojoliet
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Same as
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.Fl j .
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.It Cm norrip
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Same as
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.Fl r .
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.It Cm brokenjoliet
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Same as
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.Fl b .
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.El
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.It Fl r
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Do not use any Rockridge extensions included in the file system.
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.It Fl s Ar startsector
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Start the file system at
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.Ar startsector .
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Normally, if the underlying device is a CD-ROM drive,
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.Nm
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will try to figure out the last track from the CD-ROM containing
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data, and start the file system there.
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If the device is not a CD-ROM,
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or the table of contents cannot be examined, the file system will be
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started at sector 0.
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This option can be used to override the behaviour.
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Note that
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.Ar startsector
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is measured in CD-ROM blocks, with 2048 bytes each.
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This is the same
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as for example the
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.Cm info
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command of
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.Xr cdcontrol 1
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is printing.
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It is possible to mount an arbitrary session of a multi-session CD by specifying
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the correct
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.Ar startsector
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here.
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.It Fl C Ar charset
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Specify local
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.Ar charset
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to convert Unicode file names when using Joliet extensions.
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.It Fl v
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Be verbose about the starting sector decisions made.
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.El
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.Sh EXAMPLES
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The following command can be used to mount a Kodak Photo-CD:
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.Pp
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.Dl "mount_cd9660 -o rw -v -s 0 /dev/cd0 /cdrom"
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.Sh SEE ALSO
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.Xr cdcontrol 1 ,
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.Xr mount 2 ,
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.Xr unmount 2 ,
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.Xr cd9660 5 ,
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.Xr fstab 5 ,
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.Xr mdconfig 8 ,
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.Xr mount 8
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Bx 4.4 .
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.Pp
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The Unicode conversion routine was added by
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.An Ryuichiro Imura Aq Mt imura@ryu16.org
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in 2003.
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.Sh BUGS
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POSIX device node mapping is currently not supported.
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.Pp
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Version numbers are not stripped if Rockridge extensions are in use.
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In this case, accessing files that do not have Rockridge names without
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version numbers gets the one with the lowest version number and not
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the one with the highest.
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.Pp
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There is no ECMA support.
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