diff options
Diffstat (limited to 'doc/apt.conf.5.xml')
| -rw-r--r-- | doc/apt.conf.5.xml | 55 |
1 files changed, 50 insertions, 5 deletions
diff --git a/doc/apt.conf.5.xml b/doc/apt.conf.5.xml index 410489a73..e37456d73 100644 --- a/doc/apt.conf.5.xml +++ b/doc/apt.conf.5.xml @@ -150,8 +150,9 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; </varlistentry> <varlistentry><term>Default-Release</term> - <listitem><para>Default release to install packages from if more than one - version available. Contains release name, codename or release version. Examples: 'stable', 'testing', 'unstable', 'lenny', 'squeeze', '4.0', '5.0*'. See also &apt-preferences;.</para></listitem> + <listitem><para>Default release to install packages from if more than one + version available. Contains release name, codename or release version. Examples: 'stable', 'testing', + 'unstable', '&stable-codename;', '&testing-codename;', '4.0', '5.0*'. See also &apt-preferences;.</para></listitem> </varlistentry> <varlistentry><term>Ignore-Hold</term> @@ -198,9 +199,20 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; anything that those packages depend on.</para></listitem> </varlistentry> - <varlistentry><term>Cache-Limit</term> - <listitem><para>APT uses a fixed size memory mapped cache file to store the 'available' - information. This sets the size of that cache (in bytes).</para></listitem> + <varlistentry><term>Cache-Start, Cache-Grow and Cache-Limit</term> + <listitem><para>APT uses since version 0.7.26 a resizable memory mapped cache file to store the 'available' + information. <literal>Cache-Start</literal> acts as a hint to which size the Cache will grow + and is therefore the amount of memory APT will request at startup. The default value is + 20971520 bytes (~20 MB). Note that these amount of space need to be available for APT + otherwise it will likely fail ungracefully, so for memory restricted devices these value should + be lowered while on systems with a lot of configured sources this might be increased. + <literal>Cache-Grow</literal> defines in byte with the default of 1048576 (~1 MB) how much + the Cache size will be increased in the event the space defined by <literal>Cache-Start</literal> + is not enough. These value will be applied again and again until either the cache is big + enough to store all information or the size of the cache reaches the <literal>Cache-Limit</literal>. + The default of <literal>Cache-Limit</literal> is 0 which stands for no limit. + If <literal>Cache-Grow</literal> is set to 0 the automatic grow of the cache is disabled. + </para></listitem> </varlistentry> <varlistentry><term>Build-Essential</term> @@ -229,6 +241,30 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; and the URI handlers. <variablelist> + <varlistentry><term>Check-Valid-Until</term> + <listitem><para>Security related option defaulting to true as an + expiring validation for a Release file prevents longtime replay attacks + and can e.g. also help users to identify no longer updated mirrors - + but the feature depends on the correctness of the time on the user system. + Archive maintainers are encouraged to create Release files with the + <literal>Valid-Until</literal> header, but if they don't or a stricter value + is volitional the following <literal>Max-ValidTime</literal> option can be used. + </para></listitem> + </varlistentry> + + <varlistentry><term>Max-ValidTime</term> + <listitem><para>Seconds the Release file should be considered valid after + it was created. The default is "for ever" (0) if the Release file of the + archive doesn't include a <literal>Valid-Until</literal> header. + If it does then this date is the default. The date from the Release file or + the date specified by the creation time of the Release file + (<literal>Date</literal> header) plus the seconds specified with this + options are used to check if the validation of a file has expired by using + the earlier date of the two. Archive specific settings can be made by + appending the label of the archive to the option name. + </para></listitem> + </varlistentry> + <varlistentry><term>PDiffs</term> <listitem><para>Try to download deltas called <literal>PDiffs</literal> for Packages or Sources files instead of downloading whole ones. True @@ -491,6 +527,15 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";}; will be looked up in <filename>/tmp/staging/var/lib/dpkg/status</filename>. </para> + + <para> + The <literal>Ignore-Files-Silently</literal> list can be used to specify + which files APT should silently ignore while parsing the files in the + fragment directories. Per default a file which end with <literal>.disabled</literal>, + <literal>~</literal>, <literal>.bak</literal> or <literal>.dpkg-[a-z]+</literal> + is silently ignored. As seen in the last default value these patterns can use regular + expression syntax. + </para> </refsect1> <refsect1><title>APT in DSelect</title> |