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|
#!/bin/bash
argv0=${0##*/}
usage() {
cat <<-EOF
Display ELF dependencies as a tree
Usage: ${argv0} [options] <ELF file[s]>
Options:
-a Show all duplicated dependencies
-x Run with debugging
-h Show this help output
EOF
exit ${1:-0}
}
error() {
echo "${argv0}: $*" 1>&2
ret=1
return 1
}
find_elf() {
local elf=$1 needed_by=$2
if [[ ${elf} == */* ]] && [[ -e ${elf} ]] ; then
echo "${elf}"
return 0
else
check_paths() {
local elf=$1 ; shift
local path
for path in "$@" ; do
if [[ -e ${path}/${elf} ]] ; then
echo "${path}/${elf}"
return 0
fi
done
return 1
}
if [[ ${__last_needed_by} != ${needed_by} ]] ; then
__last_needed_by=${needed_by}
__last_needed_by_rpaths=$(scanelf -qF '#F%r' "${needed_by}" | sed 's|:| |g')
fi
check_paths "${elf}" ${__last_needed_by_rpaths} && return 0
if [[ -z ${__ldso_paths} ]] ; then
if [[ -r /etc/ld.so.conf ]] ; then
__ldso_paths=$(sed -e 's:^[[:space:]]*#.*::' /etc/ld.so.conf)
fi
: ${__ldso_paths:= }
fi
if [[ ${__ldso_paths} != " " ]] ; then
check_paths "${elf}" ${__ldso_paths} && return 0
fi
check_paths "${elf}" /lib* /usr/lib* /usr/local/lib* && return 0
fi
return 1
}
show_elf() {
local elf=$1 indent=$2 parent_elfs=$3
local rlib lib libs
local interp resolved=$(find_elf "${elf}")
elf=${elf##*/}
printf "%${indent}s%s => " "" "${elf}"
if [[ ,${parent_elfs}, == *,${elf},* ]] ; then
printf "!!! circular loop !!!\n" ""
return
fi
parent_elfs="${parent_elfs},${elf}"
printf "${resolved:-not found}"
if [[ ${indent} -eq 0 ]] ; then
interp=$(scanelf -qF '#F%i' "${resolved}")
printf " (interpreter => ${interp:-none})"
interp=${interp##*/}
fi
printf "\n"
[[ -z ${resolved} ]] && return
libs=$(scanelf -qF '#F%n' "${resolved}")
local my_allhits
if ! ${SHOW_ALL} ; then
my_allhits="${allhits}"
allhits="${allhits},${interp},${libs}"
fi
for lib in ${libs//,/ } ; do
lib=${lib##*/}
[[ ,${my_allhits}, == *,${lib},* ]] && continue
rlib=$(find_elf "${lib}" "${resolved}")
show_elf "${rlib:-${lib}}" $((indent + 4)) "${parent_elfs}"
done
}
# XXX: internal hack
if [[ $1 != "/../..source.lddtree" ]] ; then
SHOW_ALL=false
SET_X=false
([[ $1 == "" ]] || [[ $1 == --help ]]) && usage 1
opts="hax"
getopt -Q -- "${opts}" "$@" || exit 1
eval set -- $(getopt -- "${opts}" "$@")
while [[ -n $1 ]] ; do
case $1 in
-a) SHOW_ALL=true;;
-x) SET_X=true;;
-h) usage;;
--) shift; break;;
-*) usage 1;;
esac
shift
done
${SET_X} && set -x
ret=0
for elf in "$@" ; do
if [[ ! -e ${elf} ]] ; then
error "${elf}: file does not exist"
elif [[ ! -r ${elf} ]] ; then
error "${elf}: file is not readable"
elif [[ -d ${elf} ]] ; then
error "${elf}: is a directory"
else
allhits=""
[[ ${elf} != */* ]] && elf="./${elf}"
show_elf "${elf}" 0 ""
fi
done
exit ${ret}
fi
|
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