mirror of
https://github.com/Zeckmathederg/glfs.git
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082753eedc
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@4773 af4574ff-66df-0310-9fd7-8a98e5e911e0
280 lines
9.8 KiB
XML
280 lines
9.8 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY Linux_PAM-download-http "http://www.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;.tar.bz2">
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<!ENTITY Linux_PAM-download-ftp "ftp://ftp.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;.tar.bz2">
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<!ENTITY Linux_PAM-md5sum "ccff87fe639efdfc22b1ba4a0f08ec57">
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<!ENTITY Linux_PAM-size "376 KB">
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<!ENTITY Linux_PAM-buildsize "8.6 MB">
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<!ENTITY Linux_PAM-time "0.15 SBU">
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]>
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<sect1 id="Linux_PAM" xreflabel="Linux-PAM-&Linux_PAM-version;">
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<?dbhtml filename="linux_pam.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>Linux-PAM-&Linux_PAM-version;</title>
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<indexterm zone="Linux_PAM">
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<primary sortas="a-PAM_linux">PAM(Linux)</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to Linux-PAM</title>
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<para>The <application>Linux-PAM</application> package contains
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Pluggable Authentication Modules. This is useful to enable the
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local system administrator to choose how applications authenticate
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users.</para>
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>Download (HTTP): <ulink url="&Linux_PAM-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&Linux_PAM-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &Linux_PAM-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &Linux_PAM-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &Linux_PAM-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &Linux_PAM-time;</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing='compact'>
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<title>Documentation</title>
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<listitem>
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<para>Optional documentation: <ulink
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url="http://www.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;-docs.tar.bz2"/>
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Linux-PAM Dependencies</bridgehead>
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<bridgehead renderas="sect4">Recommended</bridgehead>
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<para><xref linkend="cracklib"/></para>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para><ulink
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url="http://sourceforge.net/projects/sgmltools-lite/">sgmltools-lite</ulink>
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and <xref linkend="db"/> (for pam_userdb module)</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Linux-PAM</title>
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<para>Install <application>Linux-PAM</application> by
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running the following commands:</para>
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<screen><userinput>sed -i 's@DICT_DIR_CANDIDATES="@DICT_DIR_CANDIDATES="/lib /lib/cracklib @' \
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configure &&
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./configure --enable-static-libpam --with-mailspool=/var/mail \
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--enable-read-both-confs --sysconfdir=/etc \
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--mandir=/usr/share/man &&
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make</userinput></screen>
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<para>If you downloaded the documentation and wish to install it, unpack the
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tarball into the <filename class='directory'>doc</filename> directory:</para>
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<screen><userinput>tar -jxf ../Linux-PAM-&Linux_PAM-version;-docs.tar.bz2 -C doc</userinput></screen>
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<para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>make install &&
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mv -v /lib/libpam.a /lib/libpam_misc.a /lib/libpamc.a /usr/lib &&
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rm -v /lib/libpam{,c,_misc}.so &&
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ln -v -sf ../../lib/libpam.so.&Linux_PAM-version; /usr/lib/libpam.so &&
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ln -v -sf ../../lib/libpam_misc.so.&Linux_PAM-version; /usr/lib/libpam_misc.so &&
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ln -v -sf ../../lib/libpamc.so.&Linux_PAM-version; /usr/lib/libpamc.so</userinput></screen>
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<para>Install the documentation using the following commands:</para>
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<screen role="root"><userinput>install -v -d -m755 /usr/share/doc/Linux-PAM-&Linux_PAM-version; &&
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for DOCTYPE in html ps specs txts
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do
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cp -v -R doc/$DOCTYPE /usr/share/doc/Linux-PAM-&Linux_PAM-version;
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done</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para><command>sed -i 's@CANDIDATES="@CANDIDATES="/lib
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/lib/cracklib @' configure.in</command>: This command
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changes where configure looks to find the cracklib_dict.</para>
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<para><command>autoconf</command>: This is necessary because the
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sed changes where PAM looks for the <application>cracklib</application>
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libraries, requiring regeneration of the configure script.</para>
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<para><parameter>--enable-static-libpam</parameter>: This switch builds
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static PAM libraries as well as the dynamic libraries.</para>
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<para><parameter>--with-mailspool=/var/mail</parameter>: This switch
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makes the mailspool directory FHS compliant.</para>
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<para><parameter>--enable-read-both-confs</parameter>: This switch lets
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the local administrator choose which configuration file setup to use.</para>
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<para><command>mv -v /lib/libpam.a /lib/libpam_misc.a /lib/libpamc.a
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/usr/lib</command>: This command moves the static libraries to
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<filename class='directory'>/usr/lib</filename> to comply with FHS
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guidelines.</para>
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<para><command>rm -v /lib/libpam{,c,_misc}.so; ln -v -sf ...
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/usr/lib/...</command>: These commands move the
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<filename class='symlink'>.so</filename> symlinks from
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<filename class='directory'>/lib</filename> to
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<filename class='directory'>/usr/lib</filename>.</para>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring Linux-PAM</title>
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<sect3 id="pam-config">
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<title>Config Files</title>
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<para><filename>/etc/security/*</filename> and
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<filename>/etc/pam.d/*</filename> or
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<filename>/etc/pam.conf</filename></para>
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<indexterm zone="Linux_PAM pam-config">
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<primary sortas="e-etc-security">/etc/security/*</primary>
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</indexterm>
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<indexterm zone="Linux_PAM pam-config">
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<primary sortas="e-etc-pam.d">/etc/pam.d/*</primary>
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</indexterm>
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<indexterm zone="Linux_PAM pam-config">
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<primary sortas="e-etc-pam.conf">/etc/pam.conf</primary>
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</indexterm>
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</sect3>
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<sect3>
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<title>Configuration Information</title>
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<para>Configuration information is placed in
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<filename class='directory'>/etc/pam.d/</filename> or
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<filename>/etc/pam.conf</filename> depending on user preference.
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Below are example files of each type:</para>
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<screen><literal># Begin /etc/pam.d/other
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auth required pam_unix.so nullok
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account required pam_unix.so
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session required pam_unix.so
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password required pam_unix.so nullok
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# End /etc/pam.d/other
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# Begin /etc/pam.conf
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other auth required pam_unix.so nullok
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other account required pam_unix.so
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other session required pam_unix.so
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other password required pam_unix.so nullok
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# End /etc/pam.conf</literal></screen>
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<para>The <application>PAM</application> man page
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(<command>man pam</command>) provides a good starting point for
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descriptions of fields and allowable entries. The <ulink
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url="http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/pam.html">
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Linux-PAM guide for system administrators</ulink>
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is recommended for further reading.</para>
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<para>Refer to <ulink
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url="http://www.kernel.org/pub/linux/libs/pam/modules.html"/>
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for a list of various modules available.</para>
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<note>
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<para>You should now reinstall the <xref linkend="shadow"/>
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package.</para>
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</note>
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</sect3>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>unix_chkpwd and pam_tally</seg>
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<seg>libpam.[so,a], libpamc.[so,a], and libpam_misc.[so,a]</seg>
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<seg>/etc/pam.d, /etc/security, /lib/security, and
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/usr/include/security</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="unix_chkpwd">
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<term><command>unix_chkpwd</command></term>
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<listitem>
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<para>checks user passwords that are stored
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in read protected databases.</para>
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<indexterm zone="Linux_PAM unix_chkpwd">
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<primary sortas="b-unix_chkpwd">unix_chkpwd</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="pam_tally">
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<term><command>pam_tally</command></term>
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<listitem>
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<para>is used to view or manipulate the <filename>faillog</filename>
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file.</para>
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<indexterm zone="Linux_PAM pam_tally">
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<primary sortas="b-pam_tally">pam_tally</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libpam">
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<term><filename class='libraryfile'>libpam.[so,a]</filename></term>
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<listitem>
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<para>provides the interfaces between applications and the
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PAM modules.</para>
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<indexterm zone="Linux_PAM libpam">
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<primary sortas="c-libpam">libpam.[so,a]</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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