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man: document the two new condition types

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Lennart Poettering 2020-05-14 19:24:08 +02:00
parent a0b191b705
commit 410abf8304
1 changed files with 30 additions and 0 deletions
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30
man/systemd.unit.xml
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@ -1226,6 +1226,24 @@
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ConditionEnvironment=</varname></term>
<listitem><para><varname>ConditionEnvironment=</varname> may be used to check whether a specific
environment variable is set (or if prefixed with the exclamation mark — unset) in the service
manager's environment block.
The argument may be a single word, to check if the variable with this name is defined in the
environment block, or an assignment
(<literal><replaceable>name</replaceable>=<replaceable>value</replaceable></literal>), to check if
the variable with this exact value is defined. Note that the environment block of the service
manager itself is checked, i.e. not any variables defined with <varname>Environment=</varname> or
<varname>EnvironmentFile=</varname>, as described above. This is particularly useful when the
service manager runs inside a containerized environment or as per-user service manager, in order to
check for variables passed in by the enclosing container manager or PAM.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ConditionSecurity=</varname></term>
@ -1346,6 +1364,18 @@
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ConditionPathIsEncrypted=</varname></term>
<listitem><para><varname>ConditionPathIsEncrypted=</varname> is similar to
<varname>ConditionPathExists=</varname> but verifies that the underlying file system's backing
block device is encrypted using dm-crypt/LUKS. Note that this check does not cover ext4
per-directory encryption, and only detects block level encryption. Moreover, if the specified path
resides on a file system on top of a loopback block device, only encryption above the loopback device is
detected. It is not detected whether the file system backing the loopback block device is encrypted.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ConditionDirectoryNotEmpty=</varname></term>