| 2012-09-20 14:08:19 |
Rex Tsai |
description |
UBUNTU RELEASE (cat /etc/lsb-release)
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
PACKAGES
ii freemind 0.9.0+dfsg-1 Java Program for creating and viewing Mindmaps
ii java-wrappers 0.1.24 wrappers for java executables
When /etc/alternatives/java points to java runtime installed in /opt (example may be /opt/ibm-java-i386-60/bin/java), then in /usr/lib/java-wrappers/jvm-list.sh emply value is assigned to __jvm_alt in following assignment:
__jvm_alt=$(readlink /etc/alternatives/java|sed -n 's/\(\/usr\/lib\/jvm\/[^\/]*\)\/.*/\1/p')
Reason is that bacause sed expression did not match path in /opt/..., no substitution is made, and such sed statement prints pattern space only if substitution is made.
Therefore in /usr/lib/java-wrappers/java-wrappers.sh fgrep in following code always succeeds and JAVA_HOME is set to empty:
if echo "$DIRS" | fgrep "$__jvm_alt" > /dev/null ; then
JAVA_HOME="$__jvm_alt"
java_debug "Picking up the JVM designated by the alternatives system: "
java_debug " JAVA_HOME = '$JAVA_HOME'"
else
# And pick up the first one that works reasonably
for dir in $DIRS; do
if [ -x $dir/bin/java ]; then
JAVA_HOME=$dir
break;
fi
done
fi
This eventually leads to this abnormal exit:
if [ "$JAVA_HOME" ] ; then
# ... omitted ...
else
java_warning "No java runtime was found"
return 1;
fi
Hence other packages that use java-wrappers, e.g. freemind, experience other failures because java-wrappers failure. In example of freemind, it will not start at all. |
[Impact]
java-wrappers failed to find java runtime installed in /opt, which caused all java-based program failed to launch, if the user installed java runtime from Oracle.
apt-cache rdepends java-wrappers
java-wrappers
Reverse Depends:
freemind
worldwind
jajuk
weka
umlet
sweethome3d
statsvn
statcvs
sqlline
pdfsam
opticalraytracer
latexdraw
jxplorer
jsymphonic
jmeter
jftp
jeuclid-mathviewer
jeuclid-cli
jedit
jardiff
jalview
jabref
hdfview
freeplane
freemind
freecol
elki
electric
checkstyle
bnd
basex
azureus
yui-compressor
libfop-java
libbatik-java
[Test Case]
UBUNTU RELEASE (cat /etc/lsb-release)
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
PACKAGES
ii freemind 0.9.0+dfsg-1 Java Program for creating and viewing Mindmaps
ii java-wrappers 0.1.24 wrappers for java executables
When /etc/alternatives/java points to java runtime installed in /opt (example may be /opt/ibm-java-i386-60/bin/java), then in /usr/lib/java-wrappers/jvm-list.sh emply value is assigned to __jvm_alt in following assignment:
__jvm_alt=$(readlink /etc/alternatives/java|sed -n 's/\(\/usr\/lib\/jvm\/[^\/]*\)\/.*/\1/p')
Reason is that bacause sed expression did not match path in /opt/..., no substitution is made, and such sed statement prints pattern space only if substitution is made.
Therefore in /usr/lib/java-wrappers/java-wrappers.sh fgrep in following code always succeeds and JAVA_HOME is set to empty:
if echo "$DIRS" | fgrep "$__jvm_alt" > /dev/null ; then
JAVA_HOME="$__jvm_alt"
java_debug "Picking up the JVM designated by the alternatives system: "
java_debug " JAVA_HOME = '$JAVA_HOME'"
else
# And pick up the first one that works reasonably
for dir in $DIRS; do
if [ -x $dir/bin/java ]; then
JAVA_HOME=$dir
break;
fi
done
fi
This eventually leads to this abnormal exit:
if [ "$JAVA_HOME" ] ; then
# ... omitted ...
else
java_warning "No java runtime was found"
return 1;
fi
Hence other packages that use java-wrappers, e.g. freemind, experience other failures because java-wrappers failure. In example of freemind, it will not start at all. |
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