diff -r 1af5c1be89f8 -r 92d87f2e53c2 tools/elf4rom/src/inputfile.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/elf4rom/src/inputfile.cpp	Fri Jan 15 09:07:44 2010 +0000
@@ -0,0 +1,112 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+*
+* This program 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 3 of the License, or
+* (at your option) any later version.
+*
+* This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <cassert>
+
+#include "elfromerror.h"
+#include "inputfile.h"
+
+InputFile & InputFile::operator=(const InputFile & aInputFile) {
+	// Don't copy fd. Force a new to be got.
+	iOpened = false;
+	// Force size to be re-computed
+	iSizeValid = false;
+	iOffset = aInputFile.iOffset;
+	iPathName = aInputFile.iPathName;
+	return *this;
+}
+
+InputFile::InputFile(const InputFile & aInputFile){
+	*this = aInputFile;
+}
+
+InputFile::~InputFile(){
+	Close();
+}
+
+void InputFile::Open(){
+	if (iOpened) return;
+	if ((iFd = open(iPathName.c_str(), O_RDONLY|O_BINARY, 0)) < 0)
+		errx(EX_NOINPUT, "open \"%s\" failed\n", iPathName.c_str());
+	else
+		iOpened = true;
+}
+
+void InputFile::Close(){
+	if (!iOpened) return;
+	close(iFd);
+	iOpened = false;
+	iSizeValid = false;
+}
+
+size_t InputFile::Size(){
+	if (iSizeValid) return iSize - iOffset;
+	SetSize();
+	return iSize - iOffset;
+}
+
+void InputFile::SetSize(){
+	Open();
+	if ((iSize = lseek(iFd, (size_t)0, SEEK_END)) == (size_t)-1)
+		errx(EX_NOINPUT, "failed to get size of \"%s\"", iPathName.c_str());
+	if (lseek(iFd, (size_t)0, SEEK_SET) != 0)
+		errx(EX_NOINPUT, "failed to get size of \"%s\"", iPathName.c_str());
+	Close();
+	iSizeValid = true;
+}
+
+char * InputFile::GetData(){
+	size_t nbytes = Size();
+	return GetData(nbytes);
+}
+
+char * InputFile::GetData(size_t nbytes) {
+	char * data = new char[nbytes];
+	GetData(data, nbytes);
+	return data;
+}
+
+void InputFile::GetData(void * data, size_t nbytes){
+	char * d = (char *)data;
+	size_t done = 0;
+	ssize_t n;
+	
+	Open();
+	
+	if (iOffset > 0)
+		if ((size_t)lseek(iFd, iOffset, SEEK_SET) != iOffset) {
+			Close();
+			errx(EX_NOINPUT, "failed to read from \"%s\"", iPathName.c_str());
+		}
+	
+	while (nbytes){
+		n = read(iFd, d+done,nbytes);
+		// n must be greater than 0
+		if (n <= 0){
+			Close();
+			errx(EX_NOINPUT, "failed to read from \"%s\"", iPathName.c_str());
+		}
+		done += n;
+		nbytes -= n;
+	}
+	
+	Close();
+}