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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>