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#!/bin/bash |
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# Copyright 2007-2012 Gentoo Foundation |
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# Copyright 2007-2012 Mike Frysinger <vapier@gentoo.org> |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-projects/pax-utils/lddtree.sh,v 1.17 2012/11/15 20:35:04 vapier Exp $ |
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|
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argv0=${0##*/} |
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|
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: ${ROOT:=/} |
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[[ ${ROOT} != */ ]] && ROOT="${ROOT}/" |
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[[ ${ROOT} != /* ]] && ROOT="${PWD}${ROOT}" |
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|
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usage() { |
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cat <<-EOF |
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Display ELF dependencies as a tree |
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|
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Usage: ${argv0} [options] <ELF file[s]> |
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|
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Options: |
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-a Show all duplicated dependencies |
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-x Run with debugging |
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-R <root> Use this ROOT filesystem tree |
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-l Display output in a flat format |
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-h Show this help output |
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-V Show version information |
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EOF |
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exit ${1:-0} |
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} |
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|
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version() { |
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local id='$Id: lddtree.sh,v 1.17 2012/11/15 20:35:04 vapier Exp $' |
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id=${id##*,v } |
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exec echo "lddtree-${id% * Exp*}" |
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} |
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|
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error() { |
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echo "${argv0}: $*" 1>&2 |
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ret=1 |
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return 1 |
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} |
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|
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elf_specs() { |
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# With glibc, the NONE, SYSV, and LINUX OSABI's are compatible. |
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# NONE and SYSV are the same thing, so normalize LINUX to NONE. #442024 |
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scanelf -BF '#F%a %M %D %I' "$1" | \ |
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sed 's: LINUX$: NONE:' |
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} |
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|
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lib_paths_fallback="${ROOT}lib* ${ROOT}usr/lib* ${ROOT}usr/local/lib*" |
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c_ldso_paths_loaded='false' |
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find_elf() { |
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_find_elf='' |
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|
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local elf=$1 needed_by=$2 |
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if [[ ${elf} == */* ]] && [[ -e ${elf} ]] ; then |
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_find_elf=${elf} |
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return 0 |
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else |
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check_paths() { |
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local elf=$1 ; shift |
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local path pe |
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for path ; do |
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pe="${path%/}/${elf#/}" |
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if [[ -e ${pe} ]] ; then |
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if [[ $(elf_specs "${pe}") == "${elf_specs}" ]] ; then |
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_find_elf=${pe} |
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return 0 |
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fi |
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fi |
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done |
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return 1 |
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} |
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|
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if [[ ${c_last_needed_by} != ${needed_by} ]] ; then |
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c_last_needed_by=${needed_by} |
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c_last_needed_by_rpaths=$(scanelf -qF '#F%r' "${needed_by}" | \ |
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sed -e 's|:| |g' -e "s:[$]ORIGIN:${needed_by%/*}:") |
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fi |
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check_paths "${elf}" ${c_last_needed_by_rpaths} && return 0 |
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|
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if [[ -n ${LD_LIBRARY_PATH} ]] ; then |
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# Need to handle empty paths as $PWD, |
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# and handle spaces in between the colons |
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local p path=${LD_LIBRARY_PATH} |
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while : ; do |
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p=${path%%:*} |
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check_paths "${elf}" "${p:-${PWD}}" && return 0 |
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[[ ${path} == *:* ]] || break |
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path=${path#*:} |
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done |
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fi |
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|
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if ! ${c_ldso_paths_loaded} ; then |
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c_ldso_paths_loaded='true' |
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c_ldso_paths=() |
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if [[ -r ${ROOT}etc/ld.so.conf ]] ; then |
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read_ldso_conf() { |
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local line p |
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for p ; do |
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# if the glob didnt match anything #360041, |
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# or the files arent readable, skip it |
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[[ -r ${p} ]] || continue |
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while read line ; do |
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case ${line} in |
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"#"*) ;; |
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"include "*) read_ldso_conf ${line#* } ;; |
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*) c_ldso_paths+=( "${ROOT}${line#/}" ) ;; |
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esac |
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done <"${p}" |
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done |
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} |
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# the 'include' command is relative |
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pushd "${ROOT}"etc >/dev/null |
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read_ldso_conf "${ROOT}"etc/ld.so.conf |
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popd >/dev/null |
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fi |
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fi |
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if [[ ${#c_ldso_paths[@]} -gt 0 ]] ; then |
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check_paths "${elf}" "${c_ldso_paths[@]}" && return 0 |
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fi |
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|
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check_paths "${elf}" ${lib_paths_ldso:-${lib_paths_fallback}} && return 0 |
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fi |
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return 1 |
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} |
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|
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show_elf() { |
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local elf=$1 indent=$2 parent_elfs=$3 |
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local rlib lib libs |
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local interp resolved |
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find_elf "${elf}" |
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resolved=${_find_elf} |
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elf=${elf##*/} |
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${LIST} || printf "%${indent}s%s => " "" "${elf}" |
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if [[ ,${parent_elfs}, == *,${elf},* ]] ; then |
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${LIST} || printf "!!! circular loop !!!\n" "" |
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return |
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fi |
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parent_elfs="${parent_elfs},${elf}" |
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if ${LIST} ; then |
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echo "${resolved:-$1}" |
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else |
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printf "${resolved:-not found}" |
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fi |
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if [[ ${indent} -eq 0 ]] ; then |
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elf_specs=$(elf_specs "${resolved}") |
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interp=$(scanelf -qF '#F%i' "${resolved}") |
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[[ -n ${interp} ]] && interp="${ROOT}${interp#/}" |
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|
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if ${LIST} ; then |
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[[ -n ${interp} ]] && echo "${interp}" |
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else |
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printf " (interpreter => ${interp:-none})" |
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fi |
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if [[ -r ${interp} ]] ; then |
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# Extract the default lib paths out of the ldso. |
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lib_paths_ldso=$( |
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strings "${interp}" | \ |
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sed -nr -e "/^\/.*lib/{s|^/?|${ROOT}|;s|/$||;s|/?:/?|\n${ROOT}|g;p}" |
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) |
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fi |
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interp=${interp##*/} |
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fi |
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${LIST} || printf "\n" |
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|
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[[ -z ${resolved} ]] && return |
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|
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libs=$(scanelf -qF '#F%n' "${resolved}") |
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|
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local my_allhits |
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if ! ${SHOW_ALL} ; then |
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my_allhits="${allhits}" |
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allhits="${allhits},${interp},${libs}" |
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fi |
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for lib in ${libs//,/ } ; do |
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lib=${lib##*/} |
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[[ ,${my_allhits}, == *,${lib},* ]] && continue |
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find_elf "${lib}" "${resolved}" |
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rlib=${_find_elf} |
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show_elf "${rlib:-${lib}}" $((indent + 4)) "${parent_elfs}" |
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done |
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} |
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|
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# XXX: internal hack |
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if [[ $1 != "/../..source.lddtree" ]] ; then |
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SHOW_ALL=false |
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SET_X=false |
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LIST=false |
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|
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while getopts haxVR:l OPT ; do |
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case ${OPT} in |
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a) SHOW_ALL=true;; |
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x) SET_X=true;; |
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h) usage;; |
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V) version;; |
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R) ROOT="${OPTARG%/}/";; |
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l) LIST=true;; |
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?) usage 1;; |
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esac |
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done |
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shift $((OPTIND - 1)) |
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[[ -z $1 ]] && usage 1 |
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${SET_X} && set -x |
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ret=0 |
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for elf ; do |
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unset lib_paths_ldso |
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unset c_last_needed_by |
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if [[ ! -e ${elf} ]] ; then |
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error "${elf}: file does not exist" |
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elif [[ ! -r ${elf} ]] ; then |
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error "${elf}: file is not readable" |
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elif [[ -d ${elf} ]] ; then |
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error "${elf}: is a directory" |
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else |
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allhits="" |
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[[ ${elf} != */* ]] && elf="./${elf}" |
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show_elf "${elf}" 0 "" |
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fi |
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done |
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exit ${ret} |
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|
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fi |
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