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93 lines
2.1 KiB
93 lines
2.1 KiB
4 months ago
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//
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// C++ Interface: diskio (platform-independent components)
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//
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// Description: Class to handle low-level disk I/O for GPT fdisk
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//
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//
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// Author: Rod Smith <rodsmith@rodsbooks.com>, (C) 2009
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//
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// Copyright: See COPYING file that comes with this distribution
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//
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//
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// This program is copyright (c) 2009 by Roderick W. Smith. It is distributed
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// under the terms of the GNU GPL version 2, as detailed in the COPYING file.
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#define __STDC_LIMIT_MACROS
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#ifndef __STDC_CONSTANT_MACROS
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#define __STDC_CONSTANT_MACROS
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#include <winioctl.h>
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#define fstat64 fstat
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#define stat64 stat
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#define S_IRGRP 0
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#define S_IROTH 0
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#else
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#include <sys/ioctl.h>
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#endif
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#include <string>
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#include <stdint.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <iostream>
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#include "support.h"
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#include "diskio.h"
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//#include "gpt.h"
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using namespace std;
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DiskIO::DiskIO(void) {
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userFilename = "";
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realFilename = "";
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modelName = "";
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isOpen = 0;
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openForWrite = 0;
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} // constructor
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DiskIO::~DiskIO(void) {
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Close();
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} // destructor
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// Open a disk device for reading. Returns 1 on success, 0 on failure.
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int DiskIO::OpenForRead(const string & filename) {
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int shouldOpen = 1;
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if (isOpen) { // file is already open
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if (((realFilename != filename) && (userFilename != filename)) || (openForWrite)) {
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Close();
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} else {
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shouldOpen = 0;
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} // if/else
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} // if
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if (shouldOpen) {
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userFilename = filename;
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MakeRealName();
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OpenForRead();
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} // if
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return isOpen;
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} // DiskIO::OpenForRead(string filename)
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// Open a disk for reading and writing by filename.
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// Returns 1 on success, 0 on failure.
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int DiskIO::OpenForWrite(const string & filename) {
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int retval = 0;
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if ((isOpen) && (openForWrite) && ((filename == realFilename) || (filename == userFilename))) {
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retval = 1;
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} else {
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userFilename = filename;
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MakeRealName();
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retval = OpenForWrite();
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if (retval == 0) {
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realFilename = userFilename = "";
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} // if
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} // if/else
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return retval;
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} // DiskIO::OpenForWrite(string filename)
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