Date: Wed, 12 May 2010 15:50:30 -0400 From: Mike Jakubik <mike.jakubik@intertainservices.com> To: freebsd-java@freebsd.org Subject: Re: realpath: : No such file or directory Message-ID: <4BEB0686.6050603@intertainservices.com> In-Reply-To: <20100512190726.GD83316@deviant.kiev.zoral.com.ua> References: <4BEAC59B.9040105@intertainservices.com> <20100512152515.GA75759@misty.eyesbeyond.com> <4BEAC9A0.4050105@intertainservices.com> <20100512154024.GB75759@misty.eyesbeyond.com> <4BEAD2B6.8080300@intertainservices.com> <20100512165009.GB83316@deviant.kiev.zoral.com.ua> <4BEAE3B8.6040805@intertainservices.com> <20100512190726.GD83316@deviant.kiev.zoral.com.ua>
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On 5/12/2010 3:07 PM, Kostik Belousov wrote:
>
> The realpath(1) was given an empty path.
>
> According to SUSv4, realpath(3) should return ENOENT if "A component of
> file_name does not name an existing file or file_name points to an empty
> string." This was recently brought into standard compliance.
>
> Why javavm passes empty path to realpath(1), I do not know.
>
It appears the cause is because ${JAVA_HOME} is an empty variable.
---
#
# Set up an appropriate JAVA_HOME
#
setJavaHome() {
echo Debug JAVA_HOME: ${JAVA_HOME}
echo Debug JAVAVM_PREFIX: ${_JAVAVM_PREFIX}
# Use JAVA_HOME if it's set, unless its set to /usr/local
if [ -n "${JAVA_HOME}" -a \
"`realpath "${JAVA_HOME}"`" != "`realpath
"${_JAVAVM_PREFIX}"`" ]; then
if [ -n "${JAVA_HOME}" -a -f "${JAVA_HOME}/bin/${_JAVAVM_PROG}"
]; then
_JAVAVM_PROG_PATH="${JAVA_HOME}/bin"
return 0
elif [ -n "${JAVA_HOME}" -a \
-f "${JAVA_HOME}/jre/bin/${_JAVAVM_PROG}" ]; then
_JAVAVM_PROG_PATH="${JAVA_HOME}/jre/bin"
return 0
fi
fi
unset JAVA_HOME
---
When i run the above:
+ setJavaHome
+ echo Debug JAVA_HOME:
Debug JAVA_HOME:
+ echo Debug JAVAVM_PREFIX: /usr/local
Debug JAVAVM_PREFIX: /usr/local
+ realpath ''
realpath: : No such file or directory
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