diff options
Diffstat (limited to 'doc/apt.conf.5.xml')
| -rw-r--r-- | doc/apt.conf.5.xml | 70 |
1 files changed, 63 insertions, 7 deletions
diff --git a/doc/apt.conf.5.xml b/doc/apt.conf.5.xml index efe986ea8..d5e185757 100644 --- a/doc/apt.conf.5.xml +++ b/doc/apt.conf.5.xml @@ -301,6 +301,8 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; <literal>Valid-Until</literal> header, but if they don't or a stricter value is desired the <literal>Max-ValidTime</literal> option below can be used. + The <option>Check-Valid-Until</option> option of &sources-list; entries should be + preferred to disable the check selectively instead of using this global override. </para></listitem> </varlistentry> @@ -312,7 +314,8 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; the earlier date of the two is used as the expiration date. The default value is <literal>0</literal> which stands for "valid forever". Archive specific settings can be made by appending the label of the archive - to the option name. + to the option name. Preferably, the same can be achieved for specific + &sources-list; entries by using the <option>Valid-Until-Max</option> option there. </para></listitem> </varlistentry> @@ -324,7 +327,8 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; frequently updated archive with a <literal>Valid-Until</literal> header instead of completely disabling the expiration date checking. Archive specific settings can and should be used by appending the label of - the archive to the option name. + the archive to the option name. Preferably, the same can be achieved for specific + &sources-list; entries by using the <option>Valid-Until-Min</option> option there. </para></listitem> </varlistentry> @@ -618,6 +622,33 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; </para></listitem> </varlistentry> + <varlistentry><term><option>Changelogs::URI</option> scope</term> + <listitem><para> + Acquiring changelogs can only be done if an URI is known from where to get them. + Preferable the Release file indicates this in a 'Changelogs' field. If this isn't + available the Label/Origin field of the Release file is used to check if a + <literal>Acquire::Changelogs::URI::Label::<replaceable>LABEL</replaceable></literal> or + <literal>Acquire::Changelogs::URI::Origin::<replaceable>ORIGIN</replaceable></literal> option + exists and if so this value is taken. The value in the Release file can be overridden + with <literal>Acquire::Changelogs::URI::Override::Label::<replaceable>LABEL</replaceable></literal> + or <literal>Acquire::Changelogs::URI::Override::Origin::<replaceable>ORIGIN</replaceable></literal>. + + The value should be a normal URI to a text file, expect that package specific data is + replaced with the placeholder <literal>CHANGEPATH</literal>. The + value for it is: 1. if the package is from a component (e.g. <literal>main</literal>) + this is the first part otherwise it is omitted, 2. the first letter of source package name, + expect if the source package name starts with '<literal>lib</literal>' in which case it will + be the first four letters. 3. The complete source package name. 4. the complete name again and + 5. the source version. + The first (if present), second, third and fourth part are separated by a slash ('<literal>/</literal>') + and between the fourth and fifth part is an underscore ('<literal>_</literal>'). + + The special value '<literal>no</literal>' is available for this option indicating that + this source can't be used to acquire changelog files from. Another source will be tried + if available in this case. + </para></listitem> + </varlistentry> + </variablelist> </refsect1> @@ -659,7 +690,7 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; <para> The configuration item <literal>RootDir</literal> has a special - meaning. If set, all paths in <literal>Dir::</literal> will be + meaning. If set, all paths will be relative to <literal>RootDir</literal>, <emphasis>even paths that are specified absolutely</emphasis>. So, for instance, if <literal>RootDir</literal> is set to @@ -668,6 +699,7 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; <filename>/var/lib/dpkg/status</filename>, then the status file will be looked up in <filename>/tmp/staging/var/lib/dpkg/status</filename>. + If you want to prefix only relative paths, set <literal>Dir</literal> instead. </para> <para> @@ -743,10 +775,34 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; install to the commands, one per line on the requested file descriptor, defaulting to standard input.</para> - <para>Version 2 of this protocol dumps more information, including the - protocol version, the APT configuration space and the packages, files - and versions being changed. Version 3 adds the architecture and <literal>MultiArch</literal> - flag to each version being dumped.</para> + <para>Version 2 of this protocol sends more information through the requested + file descriptor: a line with the text <literal>VERSION 2</literal>, + the APT configuration space, and a list of package actions with filename + and version information.</para> + + <para>Each configuration directive line has the form + <literal>key=value</literal>. Special characters (equal signs, newlines, + nonprintable characters, quotation marks, and percent signs in + <literal>key</literal> and newlines, nonprintable characters, and percent + signs in <literal>value</literal>) are %-encoded. Lists are represented + by multiple <literal>key::=value</literal> lines with the same key. The + configuration section ends with a blank line.</para> + + <para>Package action lines consist of five fields in Version 2: old version, direction + of version change (< for upgrades, > for downgrades, = for no + change), new version, action. The version fields are "-" for no version + at all (for example when installing a package for the first time; no + version is treated as earlier than any real version, so that is an + upgrade, indicated as <literal>- < 1.23.4</literal>). The action field + is "**CONFIGURE**" if the package is being configured, "**REMOVE**" if it + is being removed, or the filename of a .deb file if it is being + unpacked.</para> + + <para>In Version 3 after each version field follows the architecture + of this version, which is "-" if there is no version, and a field showing + the MultiArch type "same", foreign", "allowed" or "none". Note that "none" + is an incorrect typename which is just kept to remain compatible, it + should be read as "no" and users are encouraged to support both.</para> <para>The version of the protocol to be used for the command <literal><replaceable>cmd</replaceable></literal> can be chosen by setting |