[1fa2099] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
---|
| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
|
---|
| 5 | %general-entities;
|
---|
| 6 | ]>
|
---|
| 7 |
|
---|
| 8 | <sect1 id="ch-system-libcap" role="wrap">
|
---|
| 9 | <?dbhtml filename="libcap.html"?>
|
---|
| 10 |
|
---|
| 11 | <sect1info condition="script">
|
---|
| 12 | <productname>libcap</productname>
|
---|
| 13 | <productnumber>&libcap-version;</productnumber>
|
---|
| 14 | <address>&libcap-url;</address>
|
---|
| 15 | </sect1info>
|
---|
| 16 |
|
---|
| 17 | <title>Libcap-&libcap-version;</title>
|
---|
| 18 |
|
---|
| 19 | <indexterm zone="ch-system-libcap">
|
---|
| 20 | <primary sortas="a-Libcap">Libcap</primary>
|
---|
| 21 | </indexterm>
|
---|
| 22 |
|
---|
| 23 | <sect2 role="package">
|
---|
| 24 | <title/>
|
---|
| 25 |
|
---|
| 26 | <para>The Libcap package implements the user-space interfaces to the POSIX
|
---|
| 27 | 1003.1e capabilities available in Linux kernels. These capabilities are a
|
---|
| 28 | partitioning of the all powerful root privilege into a set of distinct
|
---|
| 29 | privileges.</para>
|
---|
| 30 |
|
---|
| 31 | <segmentedlist>
|
---|
| 32 | <segtitle>&buildtime;</segtitle>
|
---|
| 33 | <segtitle>&diskspace;</segtitle>
|
---|
| 34 |
|
---|
| 35 | <seglistitem>
|
---|
| 36 | <seg>&libcap-ch6-sbu;</seg>
|
---|
| 37 | <seg>&libcap-ch6-du;</seg>
|
---|
| 38 | </seglistitem>
|
---|
| 39 | </segmentedlist>
|
---|
| 40 |
|
---|
| 41 | </sect2>
|
---|
| 42 |
|
---|
| 43 | <sect2 role="installation">
|
---|
| 44 | <title>Installation of Libcap</title>
|
---|
| 45 |
|
---|
| 46 | <para>Prevent a static library from being installed:</para>
|
---|
| 47 |
|
---|
| 48 | <screen><userinput remap="pre">sed -i '/install.*STALIBNAME/d' libcap/Makefile</userinput></screen>
|
---|
| 49 |
|
---|
| 50 | <para>Compile the package:</para>
|
---|
| 51 |
|
---|
| 52 | <screen><userinput remap="make">make</userinput></screen>
|
---|
| 53 |
|
---|
| 54 | <para>This package does not come with a test suite.</para>
|
---|
| 55 |
|
---|
| 56 | <para>Install the package:</para>
|
---|
| 57 |
|
---|
| 58 | <screen><userinput remap="install">make RAISE_SETFCAP=no lib=lib prefix=/usr install
|
---|
| 59 | chmod -v 755 /usr/lib/libcap.so.&libcap-version;</userinput></screen>
|
---|
| 60 |
|
---|
| 61 | <variablelist>
|
---|
| 62 | <title>The meaning of the make option:</title>
|
---|
| 63 |
|
---|
| 64 | <varlistentry>
|
---|
| 65 | <term><parameter>RAISE_SETFCAP=no</parameter></term>
|
---|
| 66 | <listitem>
|
---|
| 67 | <para>This parameter skips trying to use <command>setcap</command>
|
---|
| 68 | on itself. This avoids an installation error if the kernel or file
|
---|
| 69 | system does not support extended capabilities.</para>
|
---|
| 70 | </listitem>
|
---|
| 71 | </varlistentry>
|
---|
| 72 |
|
---|
| 73 | <varlistentry>
|
---|
| 74 | <term><parameter>lib=lib</parameter></term>
|
---|
| 75 | <listitem>
|
---|
| 76 | <para>This parameter installs the library in
|
---|
| 77 | <filename>$prefix/lib</filename> rather than
|
---|
| 78 | <filename>$prefix/lib64</filename> on x86_64. It has no effect on
|
---|
| 79 | x86.</para>
|
---|
| 80 | </listitem>
|
---|
| 81 | </varlistentry>
|
---|
| 82 |
|
---|
| 83 | </variablelist>
|
---|
| 84 |
|
---|
| 85 | <para>The shared library needs to be moved to
|
---|
| 86 | <filename class="directory">/lib</filename>, and as a result the
|
---|
| 87 | <filename class="extension">.so</filename> file in
|
---|
| 88 | <filename class="directory">/usr/lib</filename> will need to be recreated:</para>
|
---|
| 89 |
|
---|
| 90 | <screen><userinput remap="install">mv -v /usr/lib/libcap.so.* /lib
|
---|
| 91 | ln -sfv ../../lib/$(readlink /usr/lib/libcap.so) /usr/lib/libcap.so</userinput></screen>
|
---|
| 92 |
|
---|
| 93 | </sect2>
|
---|
| 94 |
|
---|
[ee1a413] | 95 | <sect2 arch="ml_32,ml_all" role="installation">
|
---|
[8eb3fe4] | 96 | <title>Installation of Libcap - 32-bit</title>
|
---|
| 97 |
|
---|
| 98 | <para>Clean previous build:</para>
|
---|
| 99 |
|
---|
| 100 | <screen><userinput remap="pre">make distclean</userinput></screen>
|
---|
| 101 |
|
---|
| 102 | <para>Compile the package:</para>
|
---|
| 103 |
|
---|
| 104 | <screen><userinput remap="make">make CC="gcc -m32 -march=i686"</userinput></screen>
|
---|
| 105 |
|
---|
| 106 | <para>Install the package:</para>
|
---|
| 107 |
|
---|
| 108 | <screen><userinput remap="install">make lib=lib32 prefix=$PWD/DESTDIR/usr -C libcap install
|
---|
| 109 | cp -Rv DESTDIR/usr/lib32/* /usr/lib32
|
---|
| 110 | rm -rf DESTDIR</userinput></screen>
|
---|
| 111 |
|
---|
| 112 | </sect2>
|
---|
| 113 |
|
---|
[ee1a413] | 114 | <sect2 arch="ml_x32,ml_all" role="installation">
|
---|
[8eb3fe4] | 115 | <title>Installation of Libcap - x32-bit</title>
|
---|
| 116 |
|
---|
| 117 | <para>Clean previous build:</para>
|
---|
| 118 |
|
---|
| 119 | <screen><userinput remap="pre">make distclean</userinput></screen>
|
---|
| 120 |
|
---|
| 121 | <para>Compile the package:</para>
|
---|
| 122 |
|
---|
| 123 | <screen><userinput remap="make">make CC="gcc -mx32"</userinput></screen>
|
---|
| 124 |
|
---|
| 125 | <para>Install the package:</para>
|
---|
| 126 |
|
---|
| 127 | <screen><userinput remap="install">make lib=libx32 prefix=$PWD/DESTDIR/usr -C libcap install
|
---|
| 128 | cp -Rv DESTDIR/usr/libx32/* /usr/libx32
|
---|
| 129 | rm -rf DESTDIR</userinput></screen>
|
---|
| 130 |
|
---|
| 131 | </sect2>
|
---|
| 132 |
|
---|
[1fa2099] | 133 | <sect2 id="contents-libcap" role="content">
|
---|
| 134 | <title>Contents of Libcap</title>
|
---|
| 135 |
|
---|
| 136 | <segmentedlist>
|
---|
| 137 | <segtitle>Installed programs</segtitle>
|
---|
| 138 | <segtitle>Installed library</segtitle>
|
---|
| 139 |
|
---|
| 140 | <seglistitem>
|
---|
| 141 | <seg>capsh, getcap, getpcaps, and setcap</seg>
|
---|
| 142 | <seg>libcap.so</seg>
|
---|
| 143 | </seglistitem>
|
---|
| 144 | </segmentedlist>
|
---|
| 145 |
|
---|
| 146 | <variablelist>
|
---|
| 147 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
| 148 | <?dbfo list-presentation="list"?>
|
---|
| 149 | <?dbhtml list-presentation="table"?>
|
---|
| 150 |
|
---|
| 151 | <varlistentry id="capsh">
|
---|
| 152 | <term><command>capsh</command></term>
|
---|
| 153 | <listitem>
|
---|
| 154 | <para>A shell wrapper to explore and constrain capability support</para>
|
---|
| 155 | <indexterm zone="ch-system-libcap capsh">
|
---|
| 156 | <primary sortas="b-capsh">capsh</primary>
|
---|
| 157 | </indexterm>
|
---|
| 158 | </listitem>
|
---|
| 159 | </varlistentry>
|
---|
| 160 |
|
---|
| 161 | <varlistentry id="getcap">
|
---|
| 162 | <term><command>getcap</command></term>
|
---|
| 163 | <listitem>
|
---|
| 164 | <para>Examines file capabilities</para>
|
---|
| 165 | <indexterm zone="ch-system-libcap getcap">
|
---|
| 166 | <primary sortas="b-getcap">getcap</primary>
|
---|
| 167 | </indexterm>
|
---|
| 168 | </listitem>
|
---|
| 169 | </varlistentry>
|
---|
| 170 |
|
---|
| 171 | <varlistentry id="getpcaps">
|
---|
| 172 | <term><command>getpcaps</command></term>
|
---|
| 173 | <listitem>
|
---|
| 174 | <para>Displays the capabilities on the queried process(es)</para>
|
---|
| 175 | <indexterm zone="ch-system-libcap getpcaps">
|
---|
| 176 | <primary sortas="b-getpcaps">getpcaps</primary>
|
---|
| 177 | </indexterm>
|
---|
| 178 | </listitem>
|
---|
| 179 | </varlistentry>
|
---|
| 180 |
|
---|
| 181 | <varlistentry id="setcap">
|
---|
| 182 | <term><command>setcap</command></term>
|
---|
| 183 | <listitem>
|
---|
| 184 | <para>Sets file capabilities</para>
|
---|
| 185 | <indexterm zone="ch-system-libcap setcap">
|
---|
| 186 | <primary sortas="b-setcap">setcap</primary>
|
---|
| 187 | </indexterm>
|
---|
| 188 | </listitem>
|
---|
| 189 | </varlistentry>
|
---|
| 190 |
|
---|
| 191 | <varlistentry id="libcap">
|
---|
| 192 | <term><filename class="libraryfile">libcap</filename></term>
|
---|
| 193 | <listitem>
|
---|
| 194 | <para>Contains the library functions for manipulating POSIX 1003.1e
|
---|
| 195 | capabilities</para>
|
---|
| 196 | <indexterm zone="ch-system-libcap libcap">
|
---|
| 197 | <primary sortas="c-libcap">libcap</primary>
|
---|
| 198 | </indexterm>
|
---|
| 199 | </listitem>
|
---|
| 200 | </varlistentry>
|
---|
| 201 |
|
---|
| 202 | </variablelist>
|
---|
| 203 |
|
---|
| 204 | </sect2>
|
---|
| 205 |
|
---|
| 206 | </sect1>
|
---|