scripts/rpm2cpio.sh: replace 5.x version with 4.x version
(From OE-Core rev: a7da1aade118d1ccf1b286f82556cd9f706bd2a4) Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -1,53 +1,55 @@
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#!/bin/sh
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#!/bin/sh -efu
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# This comes from the RPM5 5.4.0 distribution.
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# This file comes from rpm 4.x distribution
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pkg=$1
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if [ "$pkg" = "" -o ! -e "$pkg" ]; then
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echo "no package supplied" 1>&2
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exit 1
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fi
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fatal() {
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echo "$*" >&2
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exit 1
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}
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leadsize=96
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o=`expr $leadsize + 8`
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set `od -j $o -N 8 -t u1 $pkg`
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il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5`
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dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9`
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# echo "sig il: $il dl: $dl"
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pkg="$1"
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[ -n "$pkg" -a -e "$pkg" ] ||
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fatal "No package supplied"
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sigsize=`expr 8 + 16 \* $il + $dl`
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o=`expr $o + $sigsize + \( 8 - \( $sigsize \% 8 \) \) \% 8 + 8`
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set `od -j $o -N 8 -t u1 $pkg`
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il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5`
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dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9`
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# echo "hdr il: $il dl: $dl"
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_dd() {
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local o="$1"; shift
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dd if="$pkg" skip="$o" iflag=skip_bytes status=none $*
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}
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hdrsize=`expr 8 + 16 \* $il + $dl`
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o=`expr $o + $hdrsize`
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EXTRACTOR="dd if=$pkg ibs=$o skip=1"
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calcsize() {
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offset=$(($1 + 8))
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COMPRESSION=`($EXTRACTOR |file -) 2>/dev/null`
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if echo $COMPRESSION |grep -iq gzip; then
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DECOMPRESSOR=gunzip
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elif echo $COMPRESSION |grep -iq bzip2; then
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DECOMPRESSOR=bunzip2
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elif echo $COMPRESSION |grep -iq xz; then
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DECOMPRESSOR=unxz
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elif echo $COMPRESSION |grep -iq cpio; then
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DECOMPRESSOR=cat
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else
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# Most versions of file don't support LZMA, therefore we assume
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# anything not detected is LZMA
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DECOMPRESSOR=`which unlzma 2>/dev/null`
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case "$DECOMPRESSOR" in
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/* ) ;;
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* ) DECOMPRESSOR=`which lzmash 2>/dev/null`
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case "$DECOMPRESSOR" in
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/* ) DECOMPRESSOR="lzmash -d -c" ;;
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* ) DECOMPRESSOR=cat ;;
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esac
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;;
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esac
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fi
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local i b b0 b1 b2 b3 b4 b5 b6 b7
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$EXTRACTOR 2>/dev/null | $DECOMPRESSOR
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i=0
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while [ $i -lt 8 ]; do
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b="$(_dd $(($offset + $i)) bs=1 count=1)"
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[ -z "$b" ] &&
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b="0" ||
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b="$(exec printf '%u\n' "'$b")"
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eval "b$i=\$b"
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i=$(($i + 1))
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done
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rsize=$((8 + ((($b0 << 24) + ($b1 << 16) + ($b2 << 8) + $b3) << 4) + ($b4 << 24) + ($b5 << 16) + ($b6 << 8) + $b7))
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offset=$(($offset + $rsize))
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}
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case "$(_dd 0 bs=8 count=1)" in
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"$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb'
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*) fatal "File doesn't look like rpm: $pkg" ;;
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esac
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calcsize 96
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sigsize=$rsize
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calcsize $(($offset + (8 - ($sigsize % 8)) % 8))
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hdrsize=$rsize
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case "$(_dd $offset bs=3 count=1)" in
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"$(printf '\102\132')"*) _dd $offset | bunzip2 ;; # '\x42\x5a'
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"$(printf '\037\213')"*) _dd $offset | gunzip ;; # '\x1f\x8b'
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"$(printf '\375\067')"*) _dd $offset | xzcat ;; # '\xfd\x37'
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"$(printf '\135\000')"*) _dd $offset | unlzma ;; # '\x5d\x00'
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*) fatal "Unrecognized rpm file: $pkg" ;;
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esac
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