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People havn't cared about floppies in ages so convert to using

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da0 instead of fd0

Worse though is the continued reference to block devices
which havn't existed since the 3.x days.

Approved by:	bcr (mentor)
This commit is contained in:
Eitan Adler 2012-11-01 03:53:41 +00:00
parent b3d3ee17d4
commit 20181e02ab
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=39888
1 changed files with 22 additions and 68 deletions
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90
en_US.ISO8859-1/books/faq/book.xml
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@ -5278,85 +5278,39 @@ C:\="DOS"</programlisting>
<qandaentry>
<question id="user-floppymount">
<para>How do I let ordinary users mount floppies, CD-ROMs and
other removable media?</para>
<para>How do I let ordinary users mount CD-ROMs, DVDs,
USB drives, and other removable media?</para>
</question>
<answer>
<para>Ordinary users can be permitted to mount devices. Here
is how:</para>
<para>As <username>root</username> set the sysctl variable
<varname>vfs.usermount</varname> to
<literal>1</literal>.</para>
<procedure>
<step>
<para>As <username>root</username> set the sysctl variable
<varname>vfs.usermount</varname> to
<literal>1</literal>.</para>
<screen>&prompt.root; <userinput>sysctl -w vfs.usermount=1</userinput></screen>
<screen>&prompt.root; <userinput>sysctl -w vfs.usermount=1</userinput></screen>
</step>
<para>To make this persist across reboots, add the line
<literal><varname>vfs.usermount</varname>=1</literal> to
<filename>/etc/sysctl.conf</filename> so that
it is reset at system boot time.</para>
<step>
<para>As <username>root</username> assign the appropriate
permissions to the block device associated with the
removable media.</para>
<para>Users can only mount devices they have read
permissions to. To allow users to mount a device
permissions must be set in
<filename>/etc/devfs.conf</filename>.</para>
<para>For example, to allow users to mount the first
floppy drive, use:</para>
<para>For example, to allow users to mount the first USB
drive add:</para>
<screen>&prompt.root; <userinput>chmod 666 /dev/fd0</userinput></screen>
<programlisting># Allow all users to mount a USB drive.
own /dev/da0 root:operator
perm /dev/da00 0666</programlisting>
<para>To allow users in the group
<groupname>operator</groupname> to mount the CD-ROM
drive, use:</para>
<screen>&prompt.root; <userinput>chgrp operator /dev/acd0c</userinput>
&prompt.root; <userinput>chmod 640 /dev/acd0c</userinput></screen>
</step>
<step>
<para>You will need to alter
<filename>/etc/devfs.conf</filename> to make these
changes permanent across reboots.</para>
<para>As <username>root</username>, add the necessary
lines to <filename>/etc/devfs.conf</filename>. For
example, to allow users to mount the first floppy drive
add:</para>
<programlisting># Allow all users to mount the floppy disk.
own /dev/fd0 root:operator
perm /dev/fd0 0666</programlisting>
<para>To allow users in the group
<groupname>operator</groupname> to mount the CD-ROM drive
add:</para>
<programlisting># Allow members of the group operator to mount CD-ROMs.
own /dev/acd0 root:operator
perm /dev/acd0 0660</programlisting>
</step>
<step>
<para>Finally, add the line
<literal><varname>vfs.usermount</varname>=1</literal> to
the file <filename>/etc/sysctl.conf</filename> so that
it is reset at system boot time.</para>
</step>
</procedure>
<para>All users can now mount the floppy
<devicename>/dev/fd0</devicename> onto a directory that they
own:</para>
<para>All users can now mount devices they could read
onto a directory that they own:</para>
<screen>&prompt.user; <userinput>mkdir <replaceable>~/my-mount-point</replaceable></userinput>
&prompt.user; <userinput>mount -t msdosfs /dev/fd0 <replaceable>~/my-mount-point</replaceable></userinput></screen>
<para>Users in group <groupname>operator</groupname> can now
mount the CD-ROM <devicename>/dev/acd0c</devicename> onto a
directory that they own:</para>
<screen>&prompt.user; <userinput>mkdir <replaceable>~/my-mount-point</replaceable></userinput>
&prompt.user; <userinput>mount -t cd9660 /dev/acd0c <replaceable>~/my-mount-point</replaceable></userinput></screen>
&prompt.user; <userinput>mount -t msdosfs /dev/da0<replaceable>~/my-mount-point</replaceable></userinput></screen>
<para>Unmounting the device is simple:</para>