#!/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 gi/linux/net-next.git/log/fs/autofs4/symlink.c'>logtreecommitdiff
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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-11 11:17:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-11 11:17:54 -0800
commit69973b830859bc6529a7a0468ba0d80ee5117826 (patch)
tree5f11fe15ed9d9a3ab9c92242030e54b73ecdce45 /fs/autofs4/symlink.c
parent2e4333c14de06a333783d6812cf3c4998f78b0c8 (diff)
Linux 4.9
Diffstat (limited to 'fs/autofs4/symlink.c')