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build-fhs-{chroot,user}env: document new extra bind mounts option

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Nikolay Amiantov 2015-10-11 17:53:03 +03:00
parent 8fbe500fb6
commit fa53fbe086
1 changed files with 14 additions and 0 deletions
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doc/functions.xml
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@ -236,6 +236,20 @@ c = lib.makeOverridable f { a = 1; b = 2; }</programlisting>
<literal>runScript</literal> parameter, which is a command that would be
executed inside the sandbox and passed all the command line arguments. It
default to <literal>bash</literal>.
</para>
<para>
It also uses <literal>CHROOTENV_EXTRA_BINDS</literal> environment variable
for binding extra directories in the sandbox to outside places. The format of
the variable is <literal>/mnt=test-mnt:/data</literal>, where
<literal>/mnt</literal> would be mounted as <literal>/test-mnt</literal>
and <literal>/data</literal> would be mounted as <literal>/data</literal>.
<literal>extraBindMounts</literal> array argument to
<function>buildFHSUserEnv</function> function is prepended to this variable.
Latter entries take priority if defined several times -- i.e. in case of
<literal>/data=data1:/data=data2</literal> the actual bind path would be
<literal>/data2</literal>.
</para>
<para>
One can create a simple environment using a <literal>shell.nix</literal>
like that:
</para>