#!/bin/sh # ---------------------------------------------------------------------- # extract-vmlinux - Extract uncompressed vmlinux from a kernel image # # Inspired from extract-ikconfig # (c) 2009,2010 Dick Streefland # # (c) 2011 Corentin Chary # # 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: $me " >&2 exit 2 fi # Prepare temp files: tmp=$(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 /refs/?id=10435c1192d06bdb0bac7666452d8219d7e7c477'>refslogtreecommitdiff
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authorFeng <fgao@ikuai8.com>2017-01-20 21:40:43 +0800
committerPablo Neira Ayuso <pablo@netfilter.org>2017-02-02 14:30:19 +0100
commit10435c1192d06bdb0bac7666452d8219d7e7c477 (patch)
tree93b76419142fe17b1d162d062c663297a3e8a965 /net/batman-adv/tp_meter.h
parent1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17 (diff)
netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()
If something fails in nf_tables_table_enable(), it unregisters the chains. But the rollback code is the same as nf_tables_table_disable() almostly, except there is one counter check. Now create one wrapper function to eliminate the duplicated codes. Signed-off-by: Feng <fgao@ikuai8.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/batman-adv/tp_meter.h')