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Week 10 Assignments #3: Modules

• Read:
  • Z910-SP0-MEMO.txt
  • Z910-SP1-USER.txt
  • Z910-SP2-ROOT.txt
  • Z910-SP3-KERN.txt
• Assignment:
  • (root) Write kernel log to file WEEK10-KERNEL-LOG.txt
  • (root) Change owner file WEEK10-KERNEL-LOG.txt
  • (user) COPY the result to SP_RESULT/W10/WEEK10-KERNEL-LOG.txt

tail -f /var/log/kern.log | grep --line-buffered ' ZCZC ' | tee WEEK10-KERNEL-LOG.txt

• Change owner file “WEEK10-KERNEL-LOG.txt” and copy it to $HOME/SP_RESLT/W10/

• Tainted Kernel Check (ROOT)

  • BIT 12=1 (4096) means: ‘Externally-built (“out-of-tree”) module was loaded’

for i in $(seq 18); do echo $(($i-1)) $(($(cat /proc/sys/kernel/tainted)>>($i-1)&1));done

• Test script “h09-test.sh” is run by root. Change owner file “/tmp/WEEK$WEEK-MODULE-LOG.txt” and copy it to:

MODLOG="/tmp/WEEK10-MODULE-LOG.txt"
RESULT="$HOME/SP_RESULT/W10"
[ -d $RESULT/ ] || mkdir -pv $RESULT/
if [ -f $MODLOG  ] ; then
  cp -v $MODLOG $RESULT/
  cd $RESULT/
  ls -al
else
  echo "No $MODLOG File!"
fi

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