#! /usr/bin/env bash

# Copyright (C) 2019 Red Hat, Inc.

# This file is part of elfutils.

#

# This file is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# elfutils 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 General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

. $srcdir/test-subr.sh

# Only run on 64bit systems, 32bit systems don't support > 4GB

# ELF files.

long_bit=$(getconf LONG_BIT)

echo "long_bit: $long_bit"

if test $long_bit -ne 64; then

  echo "Only 64bit systems can create > 4GB ELF files"

  exit 77

fi

# These tests need lots of disk space since they test files > 4GB.

# Skip if there just isn't enough (2.5 * 4 = 10GB).

space_available=$[$(stat -f --format="%a*%S" .)/(1024 * 1024 * 1024)]

echo "space_available: $space_available"

if test $space_available -lt 10; then

  echo "Not enough disk space, need at least 10GB available"

  exit 77

fi

# Make sure the files fit into memory, assume 6GB needed (2.5 * 2 + 1 extra).

# Running under valgrind might need even more.

mem_needed=6

if [ "x$VALGRIND_CMD" != "x" ]; then

  mem_needed=$[${mem_needed} + 2]

fi

echo "mem_needed: $mem_needed"

mem_available=$(free -g 2>/dev/null | grep ^Mem: | awk -F ' +' '{print $7}')

echo "mem_available: $mem_available"

if test -z "$mem_available" || test $mem_available -lt $mem_needed; then

  echo "Need at least ${mem_needed}GB free available memory"

  exit 77

fi

# Make sure the disk is reasonably fast, should be able to write 100MB/s

fast_disk=1

timeout -s9 10s dd conv=fsync if=/dev/zero of=tempfile bs=1M count=1K \

  || fast_disk=0; rm tempfile

if test $fast_disk -eq 0; then

  echo "File system not fast enough, need at least 100MB/s"

  exit 77

fi

# NOTE: test file will be mangled and removed!

test_file ()

{

  in_file="$1"

  readelf_out="${in_file}.readelf.out"

  out_file_strip="${in_file}.strip"

  out_file_debug="${in_file}.debug"

  testfiles ${in_file}

  tempfiles ${readelf_out} ${out_file_mmap} ${out_file_strip} ${out_file_debug}

  # Add two 2GB sections to the file.

  echo "addsections 2 ${in_file} 2147483648"

  testrun ${abs_builddir}/addsections 2 ${in_file} 2147483648

  testrun ${abs_top_builddir}/src/readelf -S ${in_file} > ${readelf_out}

  nr=$(grep '.extra' ${readelf_out} | wc -l)

  if test ${nr} != 2; then

    # Show what went wrong

    cat ${readelf_out}

    exit 1

  fi

  echo "strip -o ${out_file_strip} -f ${out_file_debug} ${in_file}"

  testrun ${abs_top_builddir}/src/strip -o ${out_file_strip} \

                                        -f ${out_file_debug} ${in_file}

  echo "elflint --gnu ${out_file_strip}"

  testrun ${abs_top_builddir}/src/elflint --gnu ${out_file_strip}

  echo "elflint --gnu -d ${out_file_debug}"

  testrun ${abs_top_builddir}/src/elflint --gnu -d ${out_file_debug}

  # Now test unstrip recombining those files.

  echo "unstrip ${out_file_strip} ${out_file_debug}"

  testrun ${abs_top_builddir}/src/unstrip ${out_file_strip} ${out_file_debug}

  echo "elfcmp ${out_file} ${out_file_strip}"

  testrun ${abs_top_builddir}/src/elfcmp ${in_file} ${out_file_debug}

  # Remove the temp files immediately, they are big...

  rm -f ${in_file} ${out_file_strip} ${out_file_debug}

}

# A collection of random testfiles to test 64bit, little/big endian

# and non-ET_REL (with phdrs)/ET_REL (without phdrs).

# Don't test 32bit, they cannot go beyond 4GB.

# 64bit, little endian, rel

test_file testfile38

# 64bit, big endian, non-rel

test_file testfile27

exit 0