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https://github.com/openharmony/third_party_elfutils.git
synced 2026-07-19 19:43:34 -04:00
Mark Wielaard
d7193bd7c9
We forgot to mark the shdr_flags dirty when only the sh_size or sh_offset changed during elf_update (). This meant that if there were no other shdr changes we only wrote out the section data, but didn't write out the shdr table to the file. Add a testcase that puts some sections in the reverse order and then writes out the resulting file again without doing any other updates. This would show the issue after write out of the (re-reversed) ELF file (the .shstrtab section offset would be wrong causing all section names to be garbage). Also run a self test. Signed-off-by: Mark Wielaard <mark@klomp.org>
46 lines
1.6 KiB
Bash
Executable File
46 lines
1.6 KiB
Bash
Executable File
#! /bin/sh
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# Copyright (C) 2019 Red Hat, Inc.
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# This file is part of elfutils.
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# elfutils is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. $srcdir/test-subr.sh
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test_reverse_self ()
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{
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in_file="$1"
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base_name="$(basename ${in_file})"
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out_file="${base_name}.rev"
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out_file_mmap="${out_file}.mmap"
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tempfiles ${out_file} ${out_file_mmap}
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# Reverse the offsets (the files should still be the same otherwise)
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testrun ${abs_builddir}/elfcopy --reverse-offs ${in_file} ${out_file}
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testrun ${abs_top_builddir}/src/elfcmp ${in_file} ${out_file}
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testrun ${abs_top_builddir}/src/elflint --gnu ${out_file}
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# An in-place nop will likely revert them back
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testrun ${abs_builddir}/elfrdwrnop ${out_file}
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testrun ${abs_top_builddir}/src/elfcmp ${in_file} ${out_file}
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testrun ${abs_top_builddir}/src/elflint --gnu ${out_file}
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}
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# Only really makes sense for ET_REL files, but try all, just to check
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# it also works if we keep the order for the allocated sections.
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for file in $self_test_files; do
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test_reverse_self $file
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done
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exit 0
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