#!/bin/bash

USER=`whoami`
if [ $USER != root ]; then
  echo "Must be root to run this script, please login as root and re-try"
  exit
fi

# see if libcwait.so is already being loaded
if [ -f "/etc/ld.so.preload" ] && [ -n "`grep libcwait /etc/ld.so.preload`" ]; then
  echo "Patch has already been applied"
  exit
else
  echo "Applying patch..."
fi

cat << EOF |
#include <errno.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
pid_t
__libc_wait (int *status)
{
  int res;
  asm volatile ("pushl %%ebx\n\t"
                "movl %2, %%ebx\n\t"
                "movl %1, %%eax\n\t"
                "int \$0x80\n\t"
                "popl %%ebx"
                : "=a" (res)
                : "i" (__NR_wait4), "0" (WAIT_ANY), "c" (status), "d" (0), "S" (0));
  return res;
}
EOF
gcc -O2 -shared -fpic -xc - -o /etc/libcwait.so
# Check we built libcwait.so
if [ -f "/etc/libcwait.so" ]; then
  echo "/etc/libcwait.so" >>/etc/ld.so.preload
  echo "Ensuring permissions are correctly set..."
  chown root.root /etc/libcwait.so /etc/ld.so.preload
  chmod 755 /etc/libcwait.so
  chmod 444 /etc/ld.so.preload
  echo "Done."
  echo "Patch successfully applied"
else
  echo "Patch installation failed, Please fix errors and try again."
fi


위의 내용을 shell file로 만들어서 돌리시면 됩니다. (요청하신 패치에 들어 있는 shell입니다.)