xref: /freebsd/sbin/mount_cd9660/mount_cd9660.8 (revision 069ac18495ad8fde2748bc94b0f80a50250bb01d)
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32.Dd August 11, 2018
33.Dt MOUNT_CD9660 8
34.Os
35.Sh NAME
36.Nm mount_cd9660
37.Nd mount an ISO-9660 file system
38.Sh SYNOPSIS
39.Nm
40.Op Fl begjrv
41.Op Fl C Ar charset
42.Op Fl o Ar options
43.Op Fl s Ar startsector
44.Ar special node
45.Sh DESCRIPTION
46The
47.Nm
48utility attaches the ISO-9660 file system residing on the device
49.Pa special
50to the global file system namespace at the location indicated by
51.Pa node .
52This command is normally executed by
53.Xr mount 8
54at boot time.
55.Pp
56The options are as follows:
57.Bl -tag -width indent
58.It Fl b
59Relax checking for Supplementary Volume Descriptor Flags field
60which is set to a wrong value on some Joliet formatted disks.
61.It Fl e
62Enable the use of extended attributes.
63.It Fl g
64Do not strip version numbers on files.
65(By default, if there are files with different version numbers on the disk,
66only the last one will be listed.)
67In either case, files may be opened without explicitly stating a
68version number.
69.It Fl j
70Do not use any Joliet extensions included in the file system.
71.It Fl o
72Options are specified with a
73.Fl o
74flag followed by a comma separated string of options.
75See the
76.Xr mount 8
77man page for possible options and their meanings.
78The following cd9660 specific options are available:
79.Pp
80.Bl -tag -width "brokenjoliet" -compact
81.It Cm extatt
82Same as
83.Fl e .
84.It Cm gens
85Same as
86.Fl g .
87.It Cm nojoliet
88Same as
89.Fl j .
90.It Cm norrip
91Same as
92.Fl r .
93.It Cm brokenjoliet
94Same as
95.Fl b .
96.El
97.It Fl r
98Do not use any Rockridge extensions included in the file system.
99.It Fl s Ar startsector
100Start the file system at
101.Ar startsector .
102Normally, if the underlying device is a CD-ROM drive,
103.Nm
104will try to figure out the last track from the CD-ROM containing
105data, and start the file system there.
106If the device is not a CD-ROM,
107or the table of contents cannot be examined, the file system will be
108started at sector 0.
109This option can be used to override the behaviour.
110Note that
111.Ar startsector
112is measured in CD-ROM blocks, with 2048 bytes each.
113This is the same
114as for example the
115.Cm info
116command of
117.Xr cdcontrol 1
118is printing.
119It is possible to mount an arbitrary session of a multi-session CD by specifying
120the correct
121.Ar startsector
122here.
123.It Fl C Ar charset
124Specify local
125.Ar charset
126to convert Unicode file names when using Joliet extensions.
127.It Fl v
128Be verbose about the starting sector decisions made.
129.El
130.Sh EXAMPLES
131The following command can be used to mount a Kodak Photo-CD:
132.Pp
133.Dl "mount_cd9660 -o rw -v -s 0 /dev/cd0 /cdrom"
134.Sh SEE ALSO
135.Xr cdcontrol 1 ,
136.Xr mount 2 ,
137.Xr unmount 2 ,
138.Xr cd9660 5 ,
139.Xr fstab 5 ,
140.Xr mdconfig 8 ,
141.Xr mount 8
142.Sh HISTORY
143The
144.Nm
145utility first appeared in
146.Bx 4.4 .
147.Pp
148The Unicode conversion routine was added by
149.An Ryuichiro Imura Aq Mt imura@ryu16.org
150in 2003.
151.Sh BUGS
152POSIX device node mapping is currently not supported.
153.Pp
154Version numbers are not stripped if Rockridge extensions are in use.
155In this case, accessing files that do not have Rockridge names without
156version numbers gets the one with the lowest version number and not
157the one with the highest.
158.Pp
159There is no ECMA support.
160