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determineLinuxInitSystem.xml
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<actionDefinition name="determineLinuxInitSystem">
<parameterList>
<!-- Temp directory, where you want to create the temporary directory for
doing some operation to determine the init system -->
<!-- DEFAULT: ${system_temp_directory} -->
<stringParameter name="tmpDir" allowEmptyValue="0"
default="${system_temp_directory}"/>
<stringParameter name="isSystemd" allowEmptyValue="1"
default="is_init_systemd" value="is_init_systemd"/>
<stringParameter name="isUpstart" allowEmptyValue="1"
default="is_init_upstart" value="is_init_upstart"/>
<stringParameter name="isSysVInit" allowEmptyValue="1"
default="is_init_sysvinit" value="is_init_sysvinit"/>
</parameterList>
<actionList>
<globalVariables names="linux_init_system ${isSystemd} ${isUpstart} ${isSysVInit}"/>
<actionGroup>
<ruleList>
<compareText logic="contains" text="${platform_name}" value="linux"/>
</ruleList>
<actionList>
<setInstallerVariable name="usageDir" value=""/>
<setInstallerVariable name="linux_init_system" value="" persist="1"/>
<setInstallerVariable name="${isSystemd}" value="" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSystemd}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isUpstart}" value="" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isUpstart}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isSysVInit}" value="" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSysVInit}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="foundNonExists" value="false"/>
<setInstallerVariable name="random" value=""/>
<setInstallerVariable name="prefix" value=".pg_comp"/>
<!-- Check if given temp directory exists or not -->
<throwError text="${msg(error.not.exist.temp.dir)}">
<ruleList>
<fileTest condition="not_exists" path="${tmpDir}"/>
</ruleList>
</throwError>
<!-- Check if the given temp directory is actual a directory -->
<throwError text="${msg(error.temp.dir.not.a.directory)}">
<ruleList>
<fileTest condition="is_not_directory" path="${tmpDir}"/>
</ruleList>
</throwError>
<!-- Check if the given temp directory is writable -->
<throwError text="${msg(error.temp.dir.not.writable)}">
<ruleList>
<fileTest condition="not_writable" path="${tmpDir}"/>
</ruleList>
</throwError>
<while>
<actionList>
<!-- Get a random number -->
<generateRandomValue length="10" variable="random"/>
<!-- This could be our temporary directory -->
<setInstallerVariable name="usageDir"
value="${tmpDir}/${prefix}-${random}"/>
<!-- This directory must not be exist -->
<setInstallerVariable name="foundNonExists" value="true">
<ruleList>
<fileTest condition="not_exists" path="${usageDir}"/>
</ruleList>
</setInstallerVariable>
</actionList>
<conditionRuleList>
<isFalse value="${foundNonExists}"/>
</conditionRuleList>
</while>
<runProgram program="sh"
customErrorMessage="${msg(error.creating.installer.tempdir)}"
programArguments="-c "umask 0077; mkdir ""${usageDir}"" || exit 100;""/>
<addTextToFile file="${usageDir}/t.sh" text="
#!/bin/sh
/usr/bin/pkg-config --exists systemd
if [ $? -eq 0 ]; then
SYSTEMD_INSTALLED=1
SYSTEMD_PATH=`/usr/bin/pkg-config --variable=prefix systemd`
$SYSTEMD_PATH/bin/systemd-notify --booted
if [ $? -eq 0 ]; then
SYSTEMD_BOOTED=1
echo 2;
exit 0;
else
SYSTEMD_BOOTED=0
fi
else
SYSTEMD_INSTALLED=0
fi
if [ $SYSTEMD_INSTALLED -eq 0 ] || [ $SYSTEMD_BOOTED -eq 0 ]; then
if [ -f /sbin/init ]; then
INIT_SYSTEM=/sbin/init
if [ -L /sbin/init ]; then
INIT_SYSTEM=`/usr/bin/readlink -f /sbin/init 2>/dev/null`
fi
else
PATH=/sbin:/usr/sbin:$PATH INIT_SYSTEM=`which init 2>/dev/null`
fi
if [ ! -z "$INIT_SYSTEM" ]; then
INIT_VERSION=`$INIT_SYSTEM --version 2>/dev/null`
INIT_VERSION_ERROR=$?
if [ -z "$INIT_VERSION_ERROR" ]; then
echo 0;
elif [ $INIT_VERSION_ERROR -ne 0 ]; then
echo 0;
else
IS_UPSTART=`echo $INIT_VERSION | grep upstart 2>/dev/null >/dev/null && echo 1 || echo 0`
if [ $IS_UPSTART -eq 1 ]; then
echo 1;
fi
fi
exit 0;
fi
exit 1;
fi
exit 1;"/>
<runProgram program="sh"
programArguments=""${usageDir}/t.sh""
showMessageOnError="0" abortOnError="0">
<onErrorActionList>
<logMessage text="Couldn't determine the init system..."/>
<setInstallerVariable name="program_stdout" value="0"/>
</onErrorActionList>
</runProgram>
<if>
<conditionRuleList>
<compareText logic="equals" text="${program_stdout}" value="0"/>
</conditionRuleList>
<actionList>
<!-- It is a SysVInit init system -->
<setInstallerVariable name="linux_init_system" value="SysVInit" persist="1"/>
<setInstallerVariable name="${isSystemd}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSystemd}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isUpstart}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isUpstart}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isSysVInit}" value="true" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSysVInit}" value=""/>
</ruleList>
</setInstallerVariable>
</actionList>
<elseActionList>
<if>
<conditionRuleList>
<compareText logic="equals" text="${program_stdout}" value="1"/>
</conditionRuleList>
<actionList>
<!-- It is a Upstart init system -->
<setInstallerVariable name="linux_init_system"
value="upstart" persist="1"/>
<setInstallerVariable name="${isSystemd}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSystemd}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isUpstart}" value="true" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isUpstart}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isSysVInit}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSysVInit}" value=""/>
</ruleList>
</setInstallerVariable>
</actionList>
<elseActionList>
<!-- It is a sytemd init system -->
<setInstallerVariable name="linux_init_system"
value="systemd" persist="1"/>
<setInstallerVariable name="${isSystemd}" value="true" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSystemd}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isUpstart}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isUpstart}" value=""/>
</ruleList>
</setInstallerVariable>
<setInstallerVariable name="${isSysVInit}" value="false" persist="1">
<ruleList>
<compareText logic="does_not_equal" text="${isSysVInit}" value=""/>
</ruleList>
</setInstallerVariable>
</elseActionList>
</if>
</elseActionList>
</if>
<deleteFile path="${usageDir}"/>
<logMessage text="==> Determined linux init system: ${linux_init_system}"/>
</actionList>
</actionGroup>
</actionList>
</actionDefinition>