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log: Add support for the systemd journal
The journal is a component of systemd, that captures Syslog messages, Kernel log messages, initial RAM disk and early boot messages as well as messages written to STDOUT/STDERR of all services, indexes them and makes this available to the user. It can be used in parallel, or in place of a traditional syslog daemon, such as rsyslog or syslog-ng. The journal offers a couple of improvements over traditional logging facilities (e.g. advanced filtering capabilities). This patch adds support for logging directly to the journal using its native API.
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8 changed files with 113 additions and 19 deletions
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@ -297,11 +297,12 @@ USA.
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<option>
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<p><opt>log-target=</opt> The default log target. Use either
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<opt>stderr</opt>, <opt>syslog</opt>, <opt>auto</opt>,
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<opt>file:PATH</opt> or <opt>newfile:PATH</opt>. <opt>auto</opt> is
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equivalent to <opt>sylog</opt> in case <opt>daemonize</opt> is enabled,
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otherwise to <opt>stderr</opt>. If set to <opt>file:PATH</opt>, logging
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is directed to the file indicated by PATH. <opt>newfile:PATH</opt> is
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<opt>stderr</opt>, <opt>syslog</opt>, <opt>journal</opt> (optional),
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<opt>auto</opt>, <opt>file:PATH</opt> or <opt>newfile:PATH</opt>. On traditional
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systems <opt>auto</opt> is equivalent to <opt>syslog</opt>. On systemd-enabled
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systems, auto is equivalent to <opt>journal</opt>, in case <opt>daemonize</opt>
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is enabled, and to <opt>stderr</opt> otherwise. If set to <opt>file:PATH</opt>,
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logging is directed to the file indicated by PATH. <opt>newfile:PATH</opt> is
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otherwise the same as <opt>file:PATH</opt>, but existing files are never
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overwritten. If the specified file already exists, a suffix is added to
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the file name to avoid overwriting. Defaults to <opt>auto</opt>. The
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@ -217,12 +217,13 @@ USA.
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</option>
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<option>
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<p><opt>--log-target</opt><arg>={auto,syslog,stderr,file:PATH,newfile:PATH}</arg></p>
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<p><opt>--log-target</opt><arg>={auto,syslog,journal,stderr,file:PATH,newfile:PATH}</arg></p>
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<optdesc><p>Specify the log target. If set to <arg>auto</arg>
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(which is the default), then logging is directed to syslog when
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<opt>--daemonize</opt> is passed, otherwise to
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STDERR. If set to <arg>file:PATH</arg>, logging is directed to
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STDERR. If set to <arg>journal</arg> logging is directed to the systemd
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journal. If set to <arg>file:PATH</arg>, logging is directed to
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the file indicated by PATH. <arg>newfile:PATH</arg> is otherwise
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the same as file:PATH, but existing files are never overwritten.
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If the specified file already exists, a suffix is added to the
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