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- #! /bin/bash
- # Copyright (C) 1996-2018 Free Software Foundation, Inc.
- # This file is part of the GNU C Library.
- # The GNU C Library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Lesser General Public
- # License as published by the Free Software Foundation; either
- # version 2.1 of the License, or (at your option) any later version.
- # The GNU C Library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- # Lesser General Public License for more details.
- # You should have received a copy of the GNU Lesser General Public
- # License along with the GNU C Library; if not, see
- # <http://www.gnu.org/licenses/>.
- # This is the `ldd' command, which lists what shared libraries are
- # used by given dynamically-linked executables. It works by invoking the
- # run-time dynamic linker as a command and setting the environment
- # variable LD_TRACE_LOADED_OBJECTS to a non-empty value.
- # We should be able to find the translation right at the beginning.
- TEXTDOMAIN=libc
- TEXTDOMAINDIR=/usr/share/locale
- QEMU=qemu-arm-static
- CROSS_LIB_PATH=/usr/arm-linux-gnueabihf/lib
- export LD_LIBRARY_PATH=${CROSS_LIB_PATH}
- RTLDLIST="${CROSS_LIB_PATH}/ld-2.28.so ${CROSS_LIB_PATH}/ld-linux-armhf.so.3 ${CROSS_LIB_PATH}/ld-linux.so.3"
- warn=
- bind_now=
- verbose=
- while test $# -gt 0; do
- case "$1" in
- --vers | --versi | --versio | --version)
- echo 'ldd (Ubuntu GLIBC 2.28-0ubuntu1) 2.28'
- printf $"Copyright (C) %s Free Software Foundation, Inc.
- This is free software; see the source for copying conditions. There is NO
- warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- " "2018"
- printf $"Written by %s and %s.
- " "Roland McGrath" "Ulrich Drepper"
- exit 0
- ;;
- --h | --he | --hel | --help)
- echo $"Usage: ldd [OPTION]... FILE...
- --help print this help and exit
- --version print version information and exit
- -d, --data-relocs process data relocations
- -r, --function-relocs process data and function relocations
- -u, --unused print unused direct dependencies
- -v, --verbose print all information
- "
- printf $"For bug reporting instructions, please see:\\n%s.\\n" \
- "<https://bugs.launchpad.net/ubuntu/+source/glibc/+bugs>"
- exit 0
- ;;
- -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
- --data-rel | --data-relo | --data-reloc | --data-relocs)
- warn=yes
- shift
- ;;
- -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
- --function | --function- | --function-r | --function-re | --function-rel | \
- --function-relo | --function-reloc | --function-relocs)
- warn=yes
- bind_now=yes
- shift
- ;;
- -v | --verb | --verbo | --verbos | --verbose)
- verbose=yes
- shift
- ;;
- -u | --u | --un | --unu | --unus | --unuse | --unused)
- unused=yes
- shift
- ;;
- --v | --ve | --ver)
- echo >&2 $"ldd: option \`$1' is ambiguous"
- exit 1
- ;;
- --) # Stop option processing.
- shift; break
- ;;
- -*)
- echo >&2 'ldd:' $"unrecognized option" "\`$1'"
- echo >&2 $"Try \`ldd --help' for more information."
- exit 1
- ;;
- *)
- break
- ;;
- esac
- done
- nonelf ()
- {
- # Maybe extra code for non-ELF binaries.
- return 1;
- }
- add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
- add_env="$add_env LD_LIBRARY_VERSION=\$verify_out"
- add_env="$add_env LD_VERBOSE=$verbose"
- if test "$unused" = yes; then
- add_env="$add_env LD_DEBUG=\"$LD_DEBUG${LD_DEBUG:+,}unused\""
- fi
- # The following command substitution is needed to make ldd work in SELinux
- # environments where the RTLD might not have permission to write to the
- # terminal. The extra "x" character prevents the shell from trimming trailing
- # newlines from command substitution results. This function is defined as a
- # subshell compound list (using "(...)") to prevent parameter assignments from
- # affecting the calling shell execution environment.
- try_trace() (
- output=$(eval $add_env '"$@"' 2>&1; rc=$?; printf 'x'; exit $rc)
- rc=$?
- printf '%s' "${output%x}"
- return $rc
- )
- case $# in
- 0)
- echo >&2 'ldd:' $"missing file arguments"
- echo >&2 $"Try \`ldd --help' for more information."
- exit 1
- ;;
- 1)
- single_file=t
- ;;
- *)
- single_file=f
- ;;
- esac
- result=0
- for file do
- # We don't list the file name when there is only one.
- test $single_file = t || echo "${file}:"
- case $file in
- */*) :
- ;;
- *) file=./$file
- ;;
- esac
- if test ! -e "$file"; then
- echo "ldd: ${file}:" $"No such file or directory" >&2
- result=1
- elif test ! -f "$file"; then
- echo "ldd: ${file}:" $"not regular file" >&2
- result=1
- elif test -r "$file"; then
- RTLD=
- ret=1
- for rtld in ${RTLDLIST}; do
- if test -x $rtld; then
- dummy=`${QEMU} $rtld 2>&1`
- if test $? = 127; then
- verify_out=`${QEMU} ${rtld} --verify "$file"`
- ret=$?
- case $ret in
- [02]) RTLD=${rtld}; break;;
- esac
- fi
- fi
- done
- case $ret in
- 1)
- # This can be a non-ELF binary or no binary at all.
- nonelf "$file" || {
- echo $" not a dynamic executable"
- result=1
- }
- ;;
- 0|2)
- try_trace ${QEMU} "$RTLD" "$file" || result=1
- ;;
- *)
- echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($ret)" >&2
- exit 1
- ;;
- esac
- else
- echo 'ldd:' $"error: you do not have read permission for" "\`$file'" >&2
- result=1
- fi
- done
- exit $result
- # Local Variables:
- # mode:ksh
- # End:
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