libblkid/docs/libblkid-config.xml

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<refentry id="libblkid-config">
<refmeta>
<refentrytitle role="top_of_page" id="libblkid-config.top_of_page">Config file</refentrytitle>
<manvolnum>3</manvolnum>
<refmiscinfo>LIBBLKID Library</refmiscinfo>
</refmeta>

<refnamediv>
<refname>Config file</refname>
<refpurpose>config file to control paths and basic library behavior</refpurpose>
</refnamediv>

<refsect1 id="libblkid-config.description" role="desc">
<title role="desc.title">Description</title>
<para>
The standard location of the
/etc/blkid.conf config file can be overridden by the environment variable
BLKID_CONF.  The following options control the libblkid library:
</para>

<variablelist role="params">
 <varlistentry>
  <term>SEND_UEVENT=<parameter>yes|not</parameter></term>
  <listitem><simpara>
   Sends uevent when /dev/disk/by-{label,uuid}/
   symlink does not match with LABEL or UUID on the device. Default is "yes".
  </simpara></listitem>
 </varlistentry>
 <varlistentry>
  <term>CACHE_FILE=<parameter>path</parameter></term>
  <listitem><simpara>
   Overrides the standard location of the cache file. This
   setting can be overridden by the environment variable BLKID_FILE. Default is
   /etc/blkid.tab.
  </simpara></listitem>
 </varlistentry>
 <varlistentry>
  <term>EVALUATE=<parameter>method</parameter></term>
  <listitem><simpara>
   Defines LABEL and UUID evaluation method(s). Currently,
   the libblkid library supports "udev" and "scan" methods. More than one methods
   may be specified in a comma separated list. Default is "udev,scan". The "udev"
   method uses udev /dev/disk/by-* symlinks and the "scan" method scans all
   block devices from the /proc/partitions file.
  </simpara></listitem>
 </varlistentry>
</variablelist>

</refsect1>

</refentry>