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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /scripts/extract-vmlinux | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'scripts/extract-vmlinux')
-rwxr-xr-x | scripts/extract-vmlinux | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/scripts/extract-vmlinux b/scripts/extract-vmlinux new file mode 100755 index 00000000..5061abcc --- /dev/null +++ b/scripts/extract-vmlinux @@ -0,0 +1,62 @@ +#!/bin/sh +# ---------------------------------------------------------------------- +# 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> +# +# Licensed under the GNU General Public License, version 2 (GPLv2). +# ---------------------------------------------------------------------- + +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: $me <kernel-image>" >&2 + exit 2 +fi + +# Prepare temp files: +tmp=$(mktemp /tmp/vmlinux-XXX) +trap "rm -f $tmp" 0 + +# Initial attempt for uncompressed images or objects: +check_vmlinux $img + +# That didn't work, so retry after decompression. +try_decompress '\037\213\010' xy gunzip +try_decompress '\3757zXZ\000' abcde unxz +try_decompress 'BZh' xy bunzip2 +try_decompress '\135\0\0\0' xxx unlzma +try_decompress '\211\114\132' xy 'lzop -d' + +# Bail out: +echo "$me: Cannot find vmlinux." >&2 |