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#!/bin/ksh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License"). You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2005 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
# elfcmp - compare significant sections in two ELF files
#
# usage: elfcmp [-v] [-S] [-s section ...] <f1> <f2>
#
VERBOSE=0
SECTIONLIST=""
SIGNING_CHECK=0
ERRORS=0
usage() {
echo 'Usage: elfcmp [-v] [-S] [-s section ...] <f1> <f2>' 1>&2
exit 1
}
while [[ $# > 0 ]]
do
case "$1" in
-v)
VERBOSE=1
;;
-s)
SECTIONLIST="$2"
shift
;;
-S)
SIGNING_CHECK=1
;;
-*)
usage
;;
*)
break
;;
esac
shift
done
if [[ $# != 2 ]]
then
usage
fi
TMP1=/tmp/elfcmp.1.$$
TMP2=/tmp/elfcmp.2.$$
trap "rm -f $TMP1 $TMP2" EXIT HUP INT QUIT PIPE TERM
list_sections() {
dump -h "$1" | grep '\[[0-9]' | awk '{print $7}'
}
list_alloc_sections() {
dump -hv "$1" | grep '\[[0-9]' | awk '$3 ~ /A/ {print $4, $5, $6, $7}'
}
signing_filter() {
/usr/bin/grep -v -e \\$SHSTRTAB -e \\.SUNW_signature
}
# get section lists for both files into temp files
if [[ "$SECTIONLIST" = "" ]]
then
if [[ $SIGNING_CHECK = 1 ]]
then
SHSTRNDX=`dump -f "$1" | awk '{if (NR==11) print $5}'`
SHSTRTAB=`dump -h "$1" | grep "^\\[$SHSTRNDX\\]" | \
awk '{print $7}'`
FILTER=signing_filter
else
FILTER=cat
fi
list_sections "$1" | $FILTER | sort >$TMP1
list_sections "$2" | $FILTER | sort >$TMP2
else
echo "$SECTIONLIST" >$TMP1
echo "$SECTIONLIST" >$TMP2
fi
# determine and print which ones aren't in both of the input files
NOT_IN_1=$(comm -13 $TMP1 $TMP2)
if [[ ! -z "$NOT_IN_1" ]]
then
echo "Section(s) $NOT_IN_1 not in $1"
(( ERRORS += 1 ))
fi
NOT_IN_2=$(comm -23 $TMP1 $TMP2)
if [[ ! -z "$NOT_IN_2" ]]
then
echo "Section(s) $NOT_IN_2 not in $2"
(( ERRORS += 1 ))
fi
# for all the sections which *are* common, do the following
for s in $(comm -12 $TMP1 $TMP2)
do
dump -s -n $s "$1" | sed '/:/d' >$TMP1
dump -s -n $s "$2" | sed '/:/d' >$TMP2
if cmp -s $TMP1 $TMP2
then
if [[ $VERBOSE = 1 ]]
then
echo "Section $s is the same"
fi
else
echo "Section $s differs"
if [[ $VERBOSE = 1 ]]
then
dump -sv -n $s "$1" | sed '/:/d' >$TMP1
dump -sv -n $s "$2" | sed '/:/d' >$TMP2
diff -c $TMP1 $TMP2
fi
(( ERRORS += 1 ))
fi
done
# verify that allocated objects have not moved
# only applies to signed objects with a program header
if [[ $SIGNING_CHECK = 1 ]]
then
HDR=$(dump -op $1 | wc -l)
if [[ $HDR -gt 2 ]]
then
list_alloc_sections "$1" | sort >$TMP1
list_alloc_sections "$2" | sort >$TMP2
if cmp -s $TMP1 $TMP2
then
if [[ $VERBOSE = 1 ]]
then
echo "Allocated sections are the same"
fi
else
echo "Allocated section(s) changed"
if [[ $VERBOSE = 1 ]]
then
diff -c $TMP1 $TMP2
fi
(( ERRORS += 1 ))
fi
fi
fi
exit $ERRORS
|
