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Modify kernfs scripts to be able to run them twice 

Those scripts could only be run once, because mount errors out
if it tries to mount an already mounted fs (or unmount a non
mounted fs). This changes generation of the scripts so that
any mount is preceded with "mountpoint -q || ", and any umount
is preceded with "mountpoint -q && ".
This commit is contained in:
Pierre Labastie 2023-09-12 22:54:51 +02:00
parent 3b27f93764
commit aceacf2f85
1 changed files with 61 additions and 1 deletions
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62
common/kernfs.xsl
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@ -16,9 +16,69 @@
</xsl:template>
<xsl:template match="userinput">
<xsl:apply-templates/>
<xsl:call-template name="check-mount">
<xsl:with-param name="mytext" select="string()"/>
</xsl:call-template>
<xsl:text>
</xsl:text>
</xsl:template>
<xsl:template name="check-mount">
<xsl:param name="mytext" select="''"/>
<xsl:choose>
<xsl:when test="contains($mytext,'&#xA;')">
<xsl:call-template name="check-mount">
<xsl:with-param name="mytext"
select="substring-before($mytext,'&#xA;')"/>
</xsl:call-template>
<xsl:text>&#xA;</xsl:text>
<xsl:call-template name="check-mount">
<xsl:with-param name="mytext"
select="substring-after($mytext,'&#xA;')"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="starts-with(normalize-space($mytext),'mountpoint')">
<xsl:copy-of select="$mytext"/>
</xsl:when>
<xsl:when test="starts-with(normalize-space($mytext),'mount')">
<xsl:variable name="mountpoint">
<xsl:call-template name="last-arg">
<xsl:with-param name="myline" select="$mytext"/>
</xsl:call-template>
</xsl:variable>
<xsl:text>mountpoint -q </xsl:text>
<xsl:copy-of select="$mountpoint"/>
<xsl:text> || </xsl:text>
<xsl:copy-of select="$mytext"/>
</xsl:when>
<xsl:when test="starts-with(normalize-space($mytext),'umount')">
<xsl:variable name="mountpoint">
<xsl:call-template name="last-arg">
<xsl:with-param name="myline" select="$mytext"/>
</xsl:call-template>
</xsl:variable>
<xsl:text>mountpoint -q </xsl:text>
<xsl:copy-of select="$mountpoint"/>
<xsl:text> &amp;&amp; </xsl:text>
<xsl:copy-of select="$mytext"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$mytext"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="last-arg">
<xsl:param name="myline" select="''"/>
<xsl:choose>
<xsl:when test="contains($myline,' ')">
<xsl:call-template name="last-arg">
<xsl:with-param name="myline" select="substring-after($myline,' ')"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$myline"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>