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rpm2cpio: Update to match rpm4 specs for decompression

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[YOCTO #3753]

(From OE-Core rev: 1377278187d20853304fe2689105f2848d796d86)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Saul Wold
2013-01-18 20:48:33 -08:00
committed by Richard Purdie
parent 59e15f6712
commit e9b73c0b01
1 changed files with 14 additions and 26 deletions
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40
meta/recipes-devtools/rpm/rpm/rpm2cpio
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@@ -1,5 +1,8 @@
#!/bin/sh
# Prevent gawk >= 4.0.x from getting funny ideas wrt UTF in printf()
LANG=C
pkg=$1
if [ "$pkg" = "" -o ! -e "$pkg" ]; then
echo "no package supplied" 1>&2
@@ -22,30 +25,15 @@ dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9`
hdrsize=`expr 8 + 16 \* $il + $dl`
o=`expr $o + $hdrsize`
EXTRACTOR="dd if=$pkg ibs=$o skip=1"
comp=`dd if=$pkg ibs=$o skip=1 count=1 2>/dev/null | dd bs=3 count=1 2> /dev/null`
COMPRESSION=`($EXTRACTOR |file -) 2>/dev/null`
if echo $COMPRESSION |grep -q gzip; then
DECOMPRESSOR=gunzip
elif echo $COMPRESSION |grep -q bzip2; then
DECOMPRESSOR=bunzip2
elif echo $COMPRESSION |grep -q xz; then
DECOMPRESSOR=unxz
elif echo $COMPRESSION |grep -q cpio; then
DECOMPRESSOR=cat
else
# Most versions of file don't support LZMA, therefore we assume
# anything not detected is LZMA
DECOMPRESSOR=`which unlzma 2>/dev/null`
case "$DECOMPRESSOR" in
/* ) ;;
* ) DECOMPRESSOR=`which lzmash 2>/dev/null`
case "$DECOMPRESSOR" in
/* ) DECOMPRESSOR="lzmash -d -c" ;;
* ) DECOMPRESSOR=cat ;;
esac
;;
esac
fi
$EXTRACTOR 2>/dev/null | $DECOMPRESSOR
gz="`echo . | awk '{ printf("%c%c", 0x1f, 0x8b); }'`"
lzma="`echo . | awk '{ printf("%cLZ", 0xff); }'`"
xz="`echo . | awk '{ printf("%c7z", 0xfd); }'`"
case "$comp" in
BZh) dd if="$pkg" ibs=$o skip=1 2>/dev/null | bunzip2 ;;
"$gz"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | gunzip ;;
"$xz"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | xzcat ;;
"$lzma"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | unlzma ;;
*) echo "Unrecognized rpm file: $pkg"; exit 1 ;;
esac