121 lines
5.4 KiB
Bash
121 lines
5.4 KiB
Bash
#!/bin/sh
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#
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# Copyright 2012 Red Hat, Inc.
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# License: GPLv2
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# Author: Jesse Keating <jkeating@redhat.com>
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#
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# Normalize DASD data into valid dasd.conf format
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#
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# Standard input should be the DASD argument
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# Standard otuput is the properly formatted content
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#
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# it is used in
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# dracut generated initramfs
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#
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# Much of this code was salvaged from linuxrc.s390 from Anaconda:
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#
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# License GPLv2+
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#
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# Copyright (C) 2000-2004 by
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# Bernhard Rosenkraenzer <bero@redhat.com>
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# Oliver Paukstadt <opaukstadt@millenux.com>
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# Karsten Hopp <karsten@redhat.de>
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# Florian La Roche <laroche@redhat.com>
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# Nils Philippsen <nils@redhat.de>
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# Helge Deller <hdeller@redhat.de>
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# David Sainty <dsainty@redhat.com>
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# Copyright (C) IBM Corp. 2008,2009
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# Author: Steffen Maier <maier@de.ibm.com>
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function canonicalize_devno()
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{
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case ${#1} in
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3) echo "0.0.0${1}" ;;
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4) echo "0.0.${1}" ;;
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*) echo "${1}" ;;
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esac
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return 0
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}
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read DASD
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# See if we've gotten a format like <dev>,feature or <dev>,<dev>,<dev>
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[[ "$DASD" =~ (\,*=[[:digit:]]) ]]
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case $? in
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# case of 0 is features, just turn the comma into a space
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0) echo $DASD |sed 's/,/ /g';;
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*) # We've got no features, do things normally
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for dasditem in $(echo $DASD |sed 's/,/ /g')
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do
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unset range features lo hi attrs devno lodevno hidevno devbusid sys
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case $dasditem in
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autodetect|probeonly|nopav|nofcx|"") continue ;; # these don't gen a config
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*)
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IFS='('
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read range features <<< "$dasditem"
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unset IFS
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lo=${range%%-*}
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[[ "$lo" =~ (^[[:xdigit:]]+\.[0-3]\.[[:xdigit:]]{4}$)|(^[[:xdigit:]]{3,4}$) ]]
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case $? in
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0) # string matched the pattern
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lo=$(canonicalize_devno $lo) ;;
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1) # string did not match the pattern
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echo $"Incorrect format for lower bound of DASD range $range: $lo" 1>&2
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exit 1
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;;
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2) echo "l.$LINENO: syntax error in regex of match operator =~, code needs to be fixed" 1>&2 ;;
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*) echo "l.$LINENO: unexpected return code of regex match operator =~, code needs to be fixed" 1>&2 ;;
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esac
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if [ "${range//*-*/}" = "" ]; then
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hi=${range##*-}
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[[ "$hi" =~ (^[[:xdigit:]]+\.[0-3]\.[[:xdigit:]]{4}$)|(^[[:xdigit:]]{3,4}$) ]]
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case $? in
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0) # string matched the pattern
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hi=$(canonicalize_devno $hi)
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if [ "${lo%.*}" != "${hi%.*}" ]; then
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echo $"Prefixes of DASD range $range do not match: ${lo%.*} != ${hi%.*}" 1>&2
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exit 1
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fi
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;;
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1) # string did not match the pattern
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echo $"Incorrect format for upper bound of DASD range $range: $hi" 1>&2
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exit 1
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;;
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2) echo "l.$LINENO: syntax error in regex of match operator =~, code needs to be fixed" 1>&2 ;;
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*) echo "l.$LINENO: unexpected return code of regex match operator =~, code needs to be fixed" 1>&2 ;;
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esac
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fi
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if [ "${features//*)/}" != "" ]; then
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echo $"Missing closing parenthesis at features of DASD range $range: ($features" 1>&2
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exit 1
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fi
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if [ -n "$features" ]; then
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attrs=""
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features="${features%)}"
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for feature in $(echo $features |sed 's/:/\n/g'); do
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case $feature in
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ro) attrs=$attrs" readonly" ;;
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diag) attrs=$attrs" use_diag" ;;
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erplog|failfast) attrs=$attrs" "$feature ;;
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*) echo $"Unknown DASD feature for device range $range: $feature" 1>&2
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exit 1
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;;
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esac
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done
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fi
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[ -z "$hi" ] && hi=$lo
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lodevno=$((0x${lo##*.}))
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hidevno=$((0x${hi##*.}))
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for ((devno=$lodevno; $devno <= $hidevno; ++devno)); do
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devbusid=$(printf "%s.%04x" ${lo%.*} $devno)
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echo -n "$devbusid"
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for attr in $attrs; do
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echo -n " $attr=1"
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done
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echo
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done
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esac
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done
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;;
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esac
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