4317cf95ca
Based on 1 normalized pattern(s): licensed under the gnu general public license version 2 gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 5 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081036.993848054@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1.7 KiB
Executable File
#!/bin/sh
SPDX-License-Identifier: GPL-2.0-only
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extract-vmlinux - Extract uncompressed vmlinux from a kernel image
Inspired from extract-ikconfig
(c) 2009,2010 Dick Streefland dick@streefland.net
(c) 2011 Corentin Chary corentin.chary@gmail.com
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check_vmlinux() { # Use readelf to check if it's a valid ELF # TODO: find a better to way to check that it's really vmlinux # and not just an elf readelf -h $1 > /dev/null 2>&1 || return 1
cat $1
exit 0
}
try_decompress() { # The obscure use of the "tr" filter is to work around older versions of # "grep" that report the byte offset of the line instead of the pattern.
# Try to find the header ($1) and decompress from here
for pos in `tr "$1\n$2" "\n$2=" < "$img" | grep -abo "^$2"`
do
pos=${pos%%:*}
tail -c+$pos "$img" | $3 > $tmp 2> /dev/null
check_vmlinux $tmp
done
}
Check invocation:
me=${0##*/} img=$1 if [ $# -ne 1 -o ! -s "$img" ] then echo "Usage: $me " >&2 exit 2 fi
Prepare temp files:
tmp=$(mktemp /tmp/vmlinux-XXX) trap "rm -f $tmp" 0
That didn't work, so retry after decompression.
try_decompress '\037\213\010' xy gunzip try_decompress '\3757zXZ\000' abcde unxz try_decompress 'BZh' xy bunzip2 try_decompress '\135\0\0\0' xxx unlzma try_decompress '\211\114\132' xy 'lzop -d' try_decompress '\002!L\030' xxx 'lz4 -d' try_decompress '(\265/\375' xxx unzstd
Finally check for uncompressed images or objects:
check_vmlinux $img
Bail out:
echo "$me: Cannot find vmlinux." >&2