Re: [PATCH] scripts: Add rpm2cpio.sh

[Jan Kiszka <jan.kiszka@siemens.com>]

On 07.01.19 14:17, Henning Schild wrote:
> Am Mon, 7 Jan 2019 07:04:03 +0100
> schrieb "[ext] Jan Kiszka" <jan.kiszka@siemens.com>:
> 
>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>
>> Bitbake is able to unpack rpm packages. For this to work, it just
>> needs rpm2cpio.sh in scripts. Add it from rpm upstream, similar to
>> what OE core did.
> 
> Could you add where exactly you got that from, and the commit id if it
> is version control?

See the header of the file.

Jan

> 
> Henning
> 
>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>> ---
>>   scripts/rpm2cpio.sh | 59
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed,
>> 59 insertions(+) create mode 100755 scripts/rpm2cpio.sh
>>
>> diff --git a/scripts/rpm2cpio.sh b/scripts/rpm2cpio.sh
>> new file mode 100755
>> index 0000000..db3cae6
>> --- /dev/null
>> +++ b/scripts/rpm2cpio.sh
>> @@ -0,0 +1,59 @@
>> +#!/bin/sh -efu
>> +#
>> +# This software is a part of ISAR,
>> +# originating from the RPM Package Manager version 4.14
>> +#
>> +# SPDX-License-Identifier: GPL-2.0
>> +
>> +fatal() {
>> +	echo "$*" >&2
>> +	exit 1
>> +}
>> +
>> +pkg="$1"
>> +[ -n "$pkg" -a -e "$pkg" ] ||
>> +	fatal "No package supplied"
>> +
>> +_dd() {
>> +	local o="$1"; shift
>> +	dd if="$pkg" skip="$o" iflag=skip_bytes status=none $*
>> +}
>> +
>> +calcsize() {
>> +	offset=$(($1 + 8))
>> +
>> +	local i b b0 b1 b2 b3 b4 b5 b6 b7
>> +
>> +	i=0
>> +	while [ $i -lt 8 ]; do
>> +		b="$(_dd $(($offset + $i)) bs=1 count=1)"
>> +		[ -z "$b" ] &&
>> +			b="0" ||
>> +			b="$(exec printf '%u\n' "'$b")"
>> +		eval "b$i=\$b"
>> +		i=$(($i + 1))
>> +	done
>> +
>> +	rsize=$((8 + ((($b0 << 24) + ($b1 << 16) + ($b2 << 8) + $b3)
>> << 4) + ($b4 << 24) + ($b5 << 16) + ($b6 << 8) + $b7))
>> +	offset=$(($offset + $rsize))
>> +}
>> +
>> +case "$(_dd 0 bs=8 count=1)" in
>> +	"$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb'
>> +	*) fatal "File doesn't look like rpm: $pkg" ;;
>> +esac
>> +
>> +calcsize 96
>> +sigsize=$rsize
>> +
>> +calcsize $(($offset + (8 - ($sigsize % 8)) % 8))
>> +hdrsize=$rsize
>> +
>> +case "$(_dd $offset bs=3 count=1)" in
>> +	"$(printf '\102\132')"*) _dd $offset | bunzip2 ;; #
>> '\x42\x5a'
>> +	"$(printf '\037\213')"*) _dd $offset | gunzip  ;; #
>> '\x1f\x8b'
>> +	"$(printf '\375\067')"*) _dd $offset | xzcat   ;; #
>> '\xfd\x37'
>> +	"$(printf '\135\000')"*) _dd $offset | unlzma  ;; #
>> '\x5d\x00'
>> +	"$(printf '\050\265')"*) _dd $offset | unzstd  ;; #
>> '\x28\xb5'
>> +	*) fatal "Unrecognized rpm file: $pkg" ;;
>> +esac
> 

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