From 5c105d9f3fd086aff195d3849dcf847d6b0bd927 Mon Sep 17 00:00:00 2001
From: blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 5 Oct 2012 10:12:53 +0000
Subject: branch Attitude Adjustment

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 docs/init-scripts.tex | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 docs/init-scripts.tex

(limited to 'docs/init-scripts.tex')

diff --git a/docs/init-scripts.tex b/docs/init-scripts.tex
new file mode 100644
index 000000000..c8b07500b
--- /dev/null
+++ b/docs/init-scripts.tex
@@ -0,0 +1,60 @@
+Because OpenWrt uses its own init script system, all init scripts must be installed
+as \texttt{/etc/init.d/\textit{name}} use \texttt{/etc/rc.common} as a wrapper.
+
+Example: \texttt{/etc/init.d/httpd}
+
+\begin{Verbatim}
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2006 OpenWrt.org
+
+START=50
+start() {
+    [ -d /www ] && httpd -p 80 -h /www -r OpenWrt
+}
+
+stop() {
+    killall httpd
+}
+\end{Verbatim}
+
+as you can see, the script does not actually parse the command line arguments itself.
+This is done by the wrapper script \texttt{/etc/rc.common}.
+
+\texttt{start()} and \texttt{stop()} are the basic functions, which almost any init
+script should provide. \texttt{start()} is called when the user runs \texttt{/etc/init.d/httpd start}
+or (if the script is enabled and does not override this behavior) at system boot time.
+
+Enabling and disabling init scripts is done by running \texttt{/etc/init.d/\textit{name} enable}
+or \texttt{/etc/init.d/\textit{name} disable}. This creates or removes symbolic links to the
+init script in \texttt{/etc/rc.d}, which is processed by \texttt{/etc/init.d/rcS} at boot time.
+
+The order in which these scripts are run is defined in the variable \texttt{START} in the init
+script. Changing it requires running \texttt{/etc/init.d/\textit{name} enable} again.
+
+You can also override these standard init script functions:
+\begin{itemize}
+    \item \texttt{boot()} \\
+        Commands to be run at boot time. Defaults to \texttt{start()}
+
+    \item \texttt{restart()} \\
+        Restart your service. Defaults to \texttt{stop(); start()}
+
+    \item \texttt{reload()} \\
+        Reload the configuration files for your service. Defaults to \texttt{restart()}
+
+\end{itemize}
+
+You can also add custom commands by creating the appropriate functions and referencing them
+in the \texttt{EXTRA\_COMMANDS} variable. Helptext is added in \texttt{EXTRA\_HELP}.
+
+Example:
+
+\begin{Verbatim}
+status() {
+    # print the status info
+}
+
+EXTRA_COMMANDS="status"
+EXTRA_HELP="        status  Print the status of the service"
+\end{Verbatim}
+
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