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Modify kernfs scripts to be able to run them twice

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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>