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Date: Wed, 21 Sep 2005 15:17:27 +0400
From: Alexey Tourbin <at@altlinux.ru>
To: devel@altlinux.ru
Message-ID: <20050921111727.GH1848@solemn.turbinal.org>
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Subject: [devel] verify_elfsym
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=F7=CF=D4 =D5=D0=D2=CF=DD=C5=CE=CE=C1=D1 =D2=C5=C1=CC=C9=DA=C1=C3=C9=D1 =D0=
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=C5=C4=D3=D4=C1=D7=CC=D1=C0.

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#!/bin/sh -ef

elf1_undefined_symbols()
{
	local elf=3D"$1" err=3D
	err=3D"$(ldd -r "$elf" 2>&1 1>/dev/null)" || return
	[ -n "$err" ] || return 0
	echo "$err" |awk '/^undefined symbol:/ {
		gsub("^[(]|[)]$", "", $NF)
		print $3 "\t" $NF
	}'
}

elf1_verify_strict()
{
	local elf=3D"$1" err=3D
	err=3D$(elf1_undefined_symbols "$elf") || return 2
	[ -n "$err" ] || return 0
	echo "Error: $elf: undefined symbols" >&2
	echo "$err" >&2
	return 1
}

elf1_verify_relaxed()
{
	local elf=3D"$1" symtab=3D"$2" err=3D
	err=3D$(elf1_undefined_symbols "$elf") || return 2
	[ -n "$err" ] || return 0
	local rc=3D0 sym=3D obj=3D
	while IFS=3D$'\t' read -r sym obj; do
		if [ "$obj" !=3D "$elf" ]; then
			echo "Error: $elf: undefined symbol: $sym ($obj)" >&2
			rc=3D1
		elif ! bloom -e "$sym" "$symtab"; then
			echo "Error: $elf: undefined symbol: $sym" >&2
			rc=3D1
		fi
	done <<<"$err"
	return $rc
}=09

rc=3D0 symtab=3D"$1"; shift
for elf; do
	type=3D"$(file -b "$elf")"
	if [ -z "${type##*ELF*executable*dynamic*}" ]; then
		elf1_verify_strict "$elf" || rc=3D1
	elif [ -z "${type##*ELF*shared*}" -a -z "${elf##*/lib/lib*.so*}" ]; then
		elf1_verify_strict "$elf" || rc=3D1
	elif [ -z "${type##*ELF*dynamic*}" -o -z "${type##*ELF*shared*}" ]; then
		elf1_verify_relaxed "$elf" "$symtab" || rc=3D1
	fi=09
done
exit $rc

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