#!/bin/sh
#
# Oracle 8.1.x patch for glibc x.2.1.3.x
#

function oracle_home_error
{
 echo "ORACLE_HOME not set, bailing out." 
 exit 1;
}

function copy_success
{
 echo "cp $1 $ORACLE_HOME/lib [ okay ] "
}

function copy_error
{
 echo "cp $1 $ORACLE_HOME/lib [ Error ] "
 exit 1;
}

function glibc_wrong_version
{
 echo "install glibc 2.1.3.x first. found $1"
 exit 1;
}

function libc_error
{
 echo "could not create $ORACLE_HOME/lib/libc.so"
 exit 1;
}

function libc_okay
{
 echo "created $ORACLE_HOME/lib/libc.so"
 cat $ORACLE_HOME/lib/libc.so
}

####### main ########
echo "Oracle 8.i.x kernel 2.4.x glibc-compat patch for Redhat "

echo "checking to see if glibc-compat 2.1.3.x installed.."
VERSION=`rpm -qa | grep compat-glibc.*2.1.3.2.*`

[  -z $VERSION ] && glibc_wrong_version $VERSION ; 

echo "$VERSION installed. "

[ -z $ORACLE_HOME ] && oracle_home_error ; 

echo "Oracle Home = $ORACLE_HOME"

echo "installed.... copying files"

[ ! -s $ORACLE_HOME ] && oracle_home_error ; 

cp /usr/i386-glibc21-linux/lib/libc-2.1.3.so $ORACLE_HOME/lib
[ $? -eq 0 ] && copy_success  /usr/i386-glibc21-linux/lib/libc-2.1.3.so;
[ $? -ne 0 ] && copy_error  /usr/i386-glibc21-linux/lib/libc-2.1.3.so;

cp /usr/i386-glibc21-linux/lib/libpthread.so $ORACLE_HOME/lib
[ $? -eq 0 ] && copy_success /usr/i386-glibc21-linux/lib/libpthread.so;
[ $? -ne 0 ] && copy_error   /usr/i386-glibc21-linux/lib/libpthread.so;

cp /usr/i386-glibc21-linux/lib/libdl.so $ORACLE_HOME/lib 
[ $? -eq 0 ] && copy_success /usr/i386-glibc21-linux/lib/libdl.so;
[ $? -ne 0 ] && copy_error /usr/i386-glibc21-linux/lib/libdl.so;

cp /usr/i386-glibc21-linux/lib/ld-linux.so.2 $ORACLE_HOME/lib
[ $? -eq 0 ] &&  copy_success /usr/i386-glibc21-linux/lib/ld-linux.so.2;
[ $? -ne 0 ] &&  copy_error /usr/i386-glibc21-linux/lib/ld-linux.so.2;

echo "creating symbolic links "
cd $ORACLE_HOME/lib/
ln -fs ld-linux.so.2 ld-2.1.3.so
ln -fs libdl.so libdl.so.2
ln -fs libpthread.so libpthread.so.0 

echo "creating $ORACLE_HOME/lib/libc.so"

echo "GROUP ( $ORACLE_HOME/lib/libc-2.1.3.so $ORACLE_HOME/lib/ld-linux.so.2 /usr/i386-glibc21-linux/lib/libc_nonshared.a )" > $ORACLE_HOME/lib/libc.so

[ ! -f $ORACLE_HOME/lib/libc.so ] && libc_error;
[ -f $ORACLE_HOME/lib/libc.so ] && libc_okay;

echo "relinking everything ... (this will take a while)"

$ORACLE_HOME/bin/relink all

echo -e "\n\n\npatch complete.\a"