Re: [PATCH] scripts: Add rpm2cpio.sh

[Henning Schild <henning.schild@siemens.com>]

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?

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