274 lines
7.5 KiB
Plaintext
274 lines
7.5 KiB
Plaintext
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#!/bin/ksh
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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#(C)IBM Corp
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################################################################
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# Usage:
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# xcatchroot -h
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# xcatchroot [-v] -i osimage cmd_string
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#
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#
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# WARNING:
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# Be very careful when using this script!!! Make sure you are
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# very clear about exactly what you are changing and what effect
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# it will have.
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#
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# As a precaution it is advisable to make a copy of the original
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# spot in case your changes wind up corrupting the image.
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#
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# Note:
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# There is a fix for the AIX bosboot command that is needed for
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# this script to work properly if your command involves modifying
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# the ODM. The AIX APAR information is not available at this time.
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#
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# However, it is very easy to check for and/or make the required
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# modification.
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#
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# In the bosboot code, there is a check for the creation of a boot
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# image; if the image creation is anything other than disk, the
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# odm values are not picked up. You will have to confirm that
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# the bosboot command in your spot has the check removed.
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#
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# Edit the bosboot command contained in the spot (save a backup).
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# (ex. "vi <path_to_spotName>/usr/sbin/bosboot"). Search for
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# "zap it as". The next line checks to see if the
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# device prefix is "hdisk". Comment out the line and the
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# corresponding "fi" which ends the "if" statement. Now this
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# code will always execute. Save changes.
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#
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# Note: Always run the NIM check operation after you are done updating
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# your spot.
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#
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# nim -Fo check spotName
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#
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######################################################################
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# include common NIM shell defines/functions
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NIM="/usr/sbin/nim"
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NIMPATH=/usr/lpp/bos.sysmgt/nim
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NIM_METHODS="${NIMPATH}/methods"
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. ${NIM_METHODS}/c_sh_lib
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M_CHATTR="${NIM_METHODS}/m_chattr"
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#---------------------------- local defines --------------------------------
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server=""
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spot=""
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lpp_source=""
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spotObj=""
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lppObj=""
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#---------------------------- module globals --------------------------------
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REQUIRED_ATTRS=""
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OPTIONAL_ATTRS=""
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location=""
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osimage=""
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cmd_string=""
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verbose=0
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usage="Usage:\n\txcatchroot -h\n\txcatchroot [-V] -i osimage cmd_string"
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# signal processing
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trap cleanup 0
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trap err_signal 1 2 11 15
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# NIM initialization
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nim_init
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# initialize local variables
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typeset z=""
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# set parameters from command line
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while getopts :i:vVh z
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do
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case ${z} in
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h) echo $usage
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exit 0
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;;
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i) # xCAT osimage name
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osimage=${OPTARG}
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;;
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v) # NIM verbose mode (undocumented option for debugging)
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set -x
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for i in $(typeset +f)
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do
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typeset -ft $i
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done
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;;
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V) # xCAT verbose
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verbose=1
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;;
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\?) # unknown option
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echo "Unknown options."
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echo $usage
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exit 1
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;;
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esac
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done
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shift `expr $OPTIND - 1`
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cmd_string=$1
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# check for cmd string
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if [[ $cmd_string = "" ]] ; then
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echo "ERROR: A command strng is required."
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echo "xcatchroot: ERROR: A command strng is required." | logger -t xcat
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echo $usage
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exit 1
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fi
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# chk for osimage ??
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if [[ $osimage = "" ]] ; then
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echo "ERROR: An xCAT osimage name is required."
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echo "xcatchroot: ERROR: An xCAT osimage name is required." | logger -t xcat
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echo $usage
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exit 1
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fi
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# get the spot and lpp_source name from the osimage def
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if [ $verbose -eq 1 ]
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then
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echo "Running command: '/opt/xcat/bin/lsdef -t osimage -o $osimage -i spot | grep spot | cut -f2 -d ='\n"
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fi
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spot=`/opt/xcat/bin/lsdef -t osimage -o $osimage -i spot | grep spot | cut -f2 -d = `
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if [[ $spot = "" ]] ; then
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echo "ERROR: Could not get spot name from xCAT osimage definition."
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echo "xcatchroot: ERROR: Could not get spot name from xCAT osimage definition." | logger -t xcat
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exit 1
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fi
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if [ $verbose -eq 1 ]
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then
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echo "Running command: '/opt/xcat/bin/lsdef -t osimage -o $osimage -i lpp_source | grep lpp_source | cut -f2 -d ='\n"
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fi
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lpp_source=`/opt/xcat/bin/lsdef -t osimage -o $osimage -i lpp_source | grep lpp_source | cut -f2 -d = `
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# confirm & set spot path for chroot global vars
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if ${LSNIM} $spot >/dev/null ; then
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if [[ $verbose -eq 1 ]]; then
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echo "Running command: ${LSNIM} -a server $spot | ${AWK} '/server/ {print $3}'\n"
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fi
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server=`${LSNIM} -a server $spot | ${AWK} '/server/ {print $3}'`
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if [[ $server = "master" ]] ; then
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spotObj="$spot"
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# chroot uses location var
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if [ $verbose -eq 1 ]
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then
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echo "Running command: ${LSNIM} -a location $spotObj | ${AWK} '/location/ {print $3}'\n"
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fi
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location=`${LSNIM} -a location $spotObj | ${AWK} '/location/ {print $3}'`
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else
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echo "ERROR: Cannot use chroot with remote resources $spot."
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echo "xcatchroot: ERROR: Cannot use chroot with remote resources $spot." | logger -t xcat
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exit 1
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fi
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fi
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# confirm & set lpp_source path for chroot global vars
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if ${LSNIM} $lpp_source >/dev/null ; then
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if [ $verbose -eq 1 ]
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then
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echo "Running command: ${LSNIM} -a server $lpp_source | ${AWK} '/server/ {print $3}'\n"
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fi
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server=`${LSNIM} -a server $lpp_source | ${AWK} '/server/ {print $3}'`
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if [[ $server = "master" ]] ; then
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lppObj="$lpp_source"
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# chroot uses lpp_source var
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if [ $verbose -eq 1 ]
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then
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echo "Running command: ${LSNIM} -a location $lppObj | ${AWK} '/location/ {print $3}'\n"
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fi
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lpp_source=`${LSNIM} -a location $lppObj | ${AWK} '/location/ {print $3}'`
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else
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echo "ERROR: Cannot use chroot with remote resource $lpp_source."
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echo "xcatchroot: ERROR: Cannot use chroot with remote resource $lpp_source." | logger -t xcat
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exit 1
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fi
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fi
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# last sanity check before chroot session is attempted
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if [[ ! -d $location ]] ; then
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echo "ERROR: Unable to proceed. Check resource name(s) also verify path location(s)."
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echo "xcatchroot: ERROR: Unable to proceed. Check resource name(s) also verify path location(s)." | logger -t xcat
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exit 1
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else
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# create a temporary script containing the $cmd_string
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# put it in the spot location
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if [ $verbose -eq 1 ]
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then
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echo "Running command: echo '#!/bin/ksh\n$cmd_string' > $location/xcatchrootscript\n"
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fi
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`echo "#!/bin/ksh\n$cmd_string" > $location/xcatchrootscript`
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`chmod 777 $location/xcatchrootscript`
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# setup chroot environment
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setup_chroot_env
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${SET_CHROOT_LIBPATH}
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# mount the lpp_source
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if [[ -d $lpp_source ]] ; then
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if [ $verbose -eq 1 ]
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then
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echo "Running command: 'mount ${lpp_source} ${new_root}/lpp_source'\n"
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fi
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nim_mount ${lpp_source} ${new_root}/lpp_source
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fi
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# add session id to spot comment field
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# on a graceful exit, we'll update this to show completion timestamp
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if tty -s
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then
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$NIM -o change -a comments="chroot session $$ is enabled on `tty`" $spotObj
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fi
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# sensitive process : place "unavailable" state on spot & lpp_source
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${M_CHATTR} -a Rstate=unavailable $spotObj
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if [[ -d $lpp_source ]] ; then
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${M_CHATTR} -a Rstate=unavailable $lppObj
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fi
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# run the temp script using chroot
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if [ $verbose -eq 1 ]
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then
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echo "Running command: ${chroot} /usr/xcatchrootscript\n"
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fi
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${chroot} /usr/xcatchrootscript
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# sensitive process has completed
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${M_CHATTR} -a Rstate=available $spotObj
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if [[ -d $lpp_source ]] ; then
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${M_CHATTR} -a Rstate=available $lppObj
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fi
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# update spot comment field
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$NIM -o change -a comments="chroot session $$ has ended" $spotObj
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fi
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# remove the tmp script
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if [ $verbose -eq 1 ]
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then
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echo "Running command: 'rm $location/xcatchrootscript'\n"
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fi
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`rm $location/xcatchrootscript`
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# echo "\nNote: Be sure to perform the NIM check operation after completing NIM spot\nupdates. (ex. 'nim -o check <spot_name>')"
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# all done
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exit 0
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