115 lines
3.8 KiB
Bash
115 lines
3.8 KiB
Bash
#! /bin/sh
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#
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# ctc_configure
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#
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# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
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#
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# Configures a CTC device by calling the IBM-provided chzdev command.
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# Whereas this script used to validate the parameters provided to it,
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# we now rely on chzdev to do that instead. The script is intended only
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# as a "translation layer" to provide backward compatability for older
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# scripts and tools that invoke it.
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#
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# Usage:
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# ctc_configure <read channel> <write channel> <online> [<protocol>]
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#
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# read/write channel = x.y.ssss where
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# x is always 0 until IBM creates something that
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# uses that number
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# y is the logical channel subsystem (lcss) number.
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# Most often this is 0, but it could be non-zero
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# ssss is the four digit subchannel address of the
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# device, in hexidecimal, with leading zeros.
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# online = 0 to take the device offline
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# 1 to bring the device online
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# protocol = 0 Compatibility with peers other than OS/390®, or z/OS, for
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# example, a z/VM TCP service machine. This is the default.
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# 1 Enhanced package checking for Linux peers.
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# 3 For compatibility with OS/390 or z/OS peers.
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# 4 For MPC connections to VTAM on traditional mainframe
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# operating systems.
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#
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# Return values:
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# Return codes are determined by the chzdev command.
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#
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mesg () {
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echo "$@"
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}
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debug_mesg () {
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case "${DEBUG}" in
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yes) mesg "$@" ;;
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*) ;;
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esac
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}
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usage(){
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echo "Usage: ${0} <read channel> <write channel> <online> [<protocol>]"
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echo " read/write channel = x.y.ssss where"
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echo " x is always 0 until IBM creates something that"
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echo " uses that number"
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echo " y is the logical channel subsystem (lcss) number."
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echo " Most often this is 0, but it could be non-zero"
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echo " ssss is the four digit subchannel address of the"
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echo " device, in hexidecimal, with leading zeros."
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echo " online = 0 to take the device offline"
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echo " 1 to bring the device online"
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echo " protocol = 0 Compatibility with peers other than OS/390®, or z/OS, for"
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echo " example, a z/VM TCP service machine. This is the default."
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echo " 1 Enhanced package checking for Linux peers."
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echo " 3 For compatibility with OS/390 or z/OS peers."
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echo " 4 For MPC connections to VTAM on traditional mainframe"
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echo " operating systems."
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}
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if [ "${DEBUG}" != "yes" ]; then
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DEBUG="no"
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fi
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DATE=$(date)
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CTC_READ_CHAN=${1}
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CTC_WRITE_CHAN=${2}
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ON_OFF=${3}
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CTC_MODE=${4}
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if [ -z "${CTC_READ_CHAN}" ] || [ -z "${CTC_WRITE_CHAN}" ] || [ -z "${ON_OFF}" ]; then
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mesg "You didn't specify all the needed parameters."
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usage
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exit 1
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fi
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if [ -f /sys/bus/ccw/devices/${CTC_READ_CHAN}/cutype ]; then
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read CU_TYPE < /sys/bus/ccw/devices/${CTC_READ_CHAN}/cutype
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else mesg "Psuedo file/sys/bus/ccw/devices/${CTC_READ_CHAN}/cutype doesn't exist."
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mesg "Check to see if sysfs is mounted."
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exit 1
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fi
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PARM_LIST=""
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if [ "${CU_TYPE}" == "3088/01" ] || [ "${CU_TYPE}" == "3088/60" ]; then
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DEV_TYPE="lcs"
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else DEV_TYPE="ctc"
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if [ -z "${CTC_MODE}" ]; then
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PARM_LIST="${PARM_LIST} protocol=0"
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else PARM_LIST="${PARM_LIST} protocol=${CTC_MODE}"
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fi
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fi
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if [ "${ON_OFF}" == 0 ]; then
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debug_mesg "chzdev -d ${DEV_TYPE} --no-root-update ${CTC_READ_CHAN}"
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chzdev -d ${DEV_TYPE} --no-root-update ${CTC_READ_CHAN}
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elif [ "${ON_OFF}" == 1 ]; then
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debug_mesg "chzdev -e ${DEV_TYPE} --no-root-update ${CTC_READ_CHAN} ${PARM_LIST}"
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chzdev -e ${DEV_TYPE} --no-root-update ${CTC_READ_CHAN} ${PARM_LIST}
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else mesg "You must specify a 0 or a 1 for the online/offline attribute."
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usage
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exit 1
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fi
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RC=${?}
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if [ ${RC} -ne 0 ]; then
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exit ${RC}
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fi
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