/*
Copyright (C) 2010-2013 <Roderick W. Smith>
This program 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 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* This class implements an interactive text-mode interface atop the
GPTData class */
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <cstdio>
#include "attributes.h"
#include "gpttext.h"
#include "support.h"
using namespace std;
/********************************************
* *
* GPTDataText class and related structures *
* *
********************************************/
GPTDataTextUI::GPTDataTextUI(void) : GPTData() {
} // default constructor
GPTDataTextUI::GPTDataTextUI(string filename) : GPTData(filename) {
} // constructor passing filename
GPTDataTextUI::~GPTDataTextUI(void) {
} // default destructor
/*********************************************************************
* *
* The following functions are extended (interactive) versions of *
* simpler functions in the base class.... *
* *
*********************************************************************/
// Overridden function; calls base-class function and then makes
// additional queries of the user, if the base-class function can't
// decide what to do.
WhichToUse GPTDataTextUI::UseWhichPartitions(void) {
WhichToUse which;
MBRValidity mbrState;
int answer;
which = GPTData::UseWhichPartitions();
if ((which != use_abort) || beQuiet)
return which;
// If we get past here, it means that the non-interactive tests were
// inconclusive, so we must ask the user which table to use....
mbrState = protectiveMBR.GetValidity();
if ((state == gpt_valid) && (mbrState == mbr)) {
cout << "Found valid MBR and GPT. Which do you want to use?\n";
answer = GetNumber(1, 3, 2, " 1 - MBR\n 2 - GPT\n 3 - Create blank GPT\n\nYour answer: ");
if (answer == 1) {
which = use_mbr;
} else if (answer == 2) {
which = use_gpt;
cout << "Using GPT and creating fresh protective MBR.\n";
} else which = use_new;
} // if
// Nasty decisions here -- GPT is present, but corrupt (bad CRCs or other
// problems)
if (state == gpt_corrupt) {
if ((mbrState == mbr) || (mbrState == hybrid)) {
cout << "Found valid MBR and corrupt GPT. Which do you want to use? (Using the\n"
<< "GPT MAY permit recovery of GPT data.)\n";
answer = GetNumber(1, 3, 2, " 1 - MBR\n 2 - GPT\n 3 - Create blank GPT\n\nYour answer: ");
if (answer == 1) {
which = use_mbr;
} else if (answer == 2) {
which = use_gpt;
} else which = use_new;
} else if (mbrState == invalid) {
cout << "Found invalid MBR and corrupt GPT. What do you want to do? (Using the\n"
<< "GPT MAY permit recovery of GPT data.)\n";
answer = GetNumber(1, 2, 1, " 1 - Use current GPT\n 2 - Create blank GPT\n\nYour answer: ");
if (answer == 1) {
which = use_gpt;
} else which = use_new;
} // if/else/else
} // if (corrupt GPT)
return which;
} // UseWhichPartitions()
// Ask the user for a partition number; and prompt for verification
// if the requested partition isn't of a known BSD type.
// Lets the base-class function do the work, and returns its value (the
// number of converted partitions).
int GPTDataTextUI::XFormDisklabel(void) {
uint32_t partNum;
uint16_t hexCode;
int goOn = 1, numDone = 0;
BSDData disklabel;
partNum = GetPartNum();
// Now see if the specified partition has a BSD type code....
hexCode = partitions[partNum].GetHexType();
if ((hexCode != 0xa500) && (hexCode != 0xa900)) {
cout << "Specified partition doesn't have a disklabel partition type "
<< "code.\nContinue anyway? ";
goOn = (GetYN() == 'Y');
} // if
if (goOn)
numDone = GPTData::XFormDisklabel(partNum);
return numDone;
} // GPTData::XFormDisklabel(void)
/*********************************************************************
* *
* Begin functions that obtain information from the users, and often *
* do something with that information (call other functions) *
* *
*********************************************************************/
// Prompts user for partition number and returns the result. Returns "0"
// (the first partition) if none are currently defined.
uint32_t GPTDataTextUI::GetPartNum(void) {
uint32_t partNum;
uint32_t low, high;
ostringstream prompt;
if (GetPartRange(&low, &high) > 0) {
prompt << "Partition number (" << low + 1 << "-" << high + 1 << "): ";
partNum = GetNumber(low + 1, high + 1, low, prompt.str());
} else partNum = 1;
return (partNum - 1);
} // GPTDataTextUI::GetPartNum()
// What it says: Resize the partition table. (Default is 128 entries.)
void GPTDataTextUI::ResizePartitionTable(void) {
int newSize;
ostringstream prompt;
uint32_t curLow, curHigh;
cout << "Current partition table size is " << numParts << ".\n";
GetPartRange(&curLow, &curHigh);
curHigh++; // since GetPartRange() returns numbers starting from 0...
// There's no point in having fewer than four partitions....
if (curHigh < (blockSize / GPT_SIZE))
curHigh = blockSize / GPT_SIZE;
prompt << "Enter new size (" << curHigh << " up, default " << NUM_GPT_ENTRIES << "): ";
newSize = GetNumber(4, 65535, 128, prompt.str());
if (newSize < 128) {
cout << "Caution: The partition table size should officially be 16KB or larger,\n"
<< "which works out to 128 entries. In practice, smaller tables seem to\n"
<< "work with most OSes, but this practice is risky. I'm proceeding with\n"
<< "the resize, but you may want to reconsider this action and undo it.\n\n";
} // if
SetGPTSize(newSize);
} // GPTDataTextUI::ResizePartitionTable()
// Interactively create a partition
void GPTDataTextUI::CreatePartition(void) {
uint64_t firstBlock, firstInLargest, lastBlock, sector, origSector;
uint32_t firstFreePart = 0;
ostringstream prompt1, prompt2, prompt3;
int partNum;
// Find first free partition...
while (partitions[firstFreePart].GetFirstLBA() != 0) {
firstFreePart++;
} // while
if (((firstBlock = FindFirstAvailable()) != 0) &&
(firstFreePart < numParts)) {
lastBlock = FindLastAvailable();
firstInLargest = FindFirstInLargest();
Align(&firstInLargest);
// Get partition number....
prompt1 << "Partition number (" << firstFreePart + 1 << "-" << numParts
<< ", default " << firstFreePart + 1 << "): ";
do {
partNum = GetNumber(firstFreePart + 1, numParts,
firstFreePart + 1, prompt1.str()) - 1;
if (partitions[partNum].GetFirstLBA() != 0)
cout << "partition " << partNum + 1 << " is in use.\n";
} while (partitions[partNum].GetFirstLBA() != 0);
// Get first block for new partition...
prompt2 << "First sector (" << firstBlock << "-" << lastBlock << ", default = "
<< firstInLargest << ") or {+-}size{KMGTP}: ";
do {
sector = GetSectorNum(firstBlock, lastBlock, firstInLargest, blockSize, prompt2.str());
} while (IsFree(sector) == 0);
origSector = sector;
if (Align(§or)) {
cout << "Information: Moved requested sector from " << origSector << " to "
<< sector << " in\norder to align on " << sectorAlignment
<< "-sector boundaries.\n";
if (!beQuiet)
cout << "Use 'l' on the experts' menu to adjust alignment\n";
} // if
// Align(§or); // Align sector to correct multiple
firstBlock = sector;
// Get last block for new partitions...
lastBlock = FindLastInFree(firstBlock);
prompt3 << "Last sector (" << firstBlock << "-" << lastBlock << ", default = "
<< lastBlock << ") or {+-}size{KMGTP}: ";
do {
sector = GetSectorNum(firstBlock, lastBlock, lastBlock, blockSize, prompt3.str());
} while (IsFree(sector) == 0);
lastBlock = sector;
firstFreePart = GPTData::CreatePartition(partNum, firstBlock, lastBlock);
partitions[partNum].ChangeType();
partitions[partNum].SetDefaultDescription();
} else {
if (firstFreePart >= numParts)
cout << "No table partition entries left\n";
else
cout << "No free sectors available\n";
} // if/else
} // GPTDataTextUI::CreatePartition()
// Interactively delete a partition (duh!)
void GPTDataTextUI::DeletePartition(void) {
int partNum;
uint32_t low, high;
ostringstream prompt;
if (GetPartRange(&low, &high) > 0) {
prompt << "Partition number (" << low + 1 << "-" << high + 1 << "): ";
partNum = GetNumber(low + 1, high + 1, low, prompt.str());
GPTData::DeletePartition(partNum - 1);
} else {
cout << "No partitions\n";
} // if/else
} // GPTDataTextUI::DeletePartition()
// Prompt user for a partition number, then change its type code
void GPTDataTextUI::ChangePartType(void) {
int partNum;
uint32_t low, high;
if (GetPartRange(&low, &high) > 0) {
partNum = GetPartNum();
partitions[partNum].ChangeType();
} else {
cout << "No partitions\n";
} // if/else
} // GPTDataTextUI::ChangePartType()
// Prompt user for a partition number, then change its unique
// GUID.
void GPTDataTextUI::ChangeUniqueGuid(void) {
int partNum;
uint32_t low, high;
string guidStr;
if (GetPartRange(&low, &high) > 0) {
partNum = GetPartNum();
cout << "Enter the partition's new unique GUID ('R' to randomize): ";
guidStr = ReadString();
if ((guidStr.length() >= 32) || (guidStr[0] == 'R') || (guidStr[0] == 'r')) {
SetPartitionGUID(partNum, (GUIDData) guidStr);
cout << "New GUID is " << partitions[partNum].GetUniqueGUID() << "\n";
} else {
cout << "GUID is too short!\n";
} // if/else
} else
cout << "No partitions\n";
} // GPTDataTextUI::ChangeUniqueGuid()
// Partition attributes seem to be rarely used, but I want a way to
// adjust them for completeness....
void GPTDataTextUI::SetAttributes(uint32_t partNum) {
partitions[partNum].SetAttributes();
} // GPTDataTextUI::SetAttributes()
// Prompts the user for a partition name and sets the partition's
// name. Returns 1 on success, 0 on failure (invalid partition
// number). (Note that the function skips prompting when an
// invalid partition number is detected.)
int GPTDataTextUI::SetName(uint32_t partNum) {
UnicodeString theName = "";
int retval = 1;
if (IsUsedPartNum(partNum)) {
cout << "Enter name: ";
#ifdef USE_UTF16
theName = ReadUString();
#else
theName = ReadString();
#endif
partitions[partNum].SetName(theName);
} else {
cerr << "Invalid partition number (" << partNum << ")\n";
retval = 0;
} // if/else
return retval;
} // GPTDataTextUI::SetName()
// Ask user for two partition numbers and swap them in the table. Note that
// this just reorders table entries; it doesn't adjust partition layout on
// the disk.
// Returns 1 if successful, 0 if not. (If user enters identical numbers, it
// counts as successful.)
int GPTDataTextUI::SwapPartitions(void) {
int partNum1, partNum2, didIt = 0;
uint32_t low, high;
ostringstream prompt;
GPTPart temp;
if (GetPartRange(&low, &high) > 0) {
partNum1 = GetPartNum();
if (high >= numParts - 1)
high = 0;
prompt << "New partition number (1-" << numParts
<< ", default " << high + 2 << "): ";
partNum2 = GetNumber(1, numParts, high + 2, prompt.str()) - 1;
didIt = GPTData::SwapPartitions(partNum1, partNum2);
} else {
cout << "No partitions\n";
} // if/else
return didIt;
} // GPTDataTextUI::SwapPartitionNumbers()
// This function destroys the on-disk GPT structures. Returns 1 if the user
// confirms destruction, 0 if the user aborts or if there's a disk error.
int GPTDataTextUI::DestroyGPTwPrompt(void) {
int allOK = 1;
if ((apmFound) || (bsdFound)) {
cout << "WARNING: APM or BSD disklabel structures detected! This operation could\n"
<< "damage any APM or BSD partitions on this disk!\n";
} // if APM or BSD
cout << "\a\aAbout to wipe out GPT on " << device << ". Proceed? ";
if (GetYN() == 'Y') {
if (DestroyGPT()) {
// Note on below: Touch the MBR only if the user wants it completely
// blanked out. Version 0.4.2 deleted the 0xEE partition and re-wrote
// the MBR, but this could wipe out a valid MBR that the program
// had subsequently discarded (say, if it conflicted with older GPT
// structures).
cout << "Blank out MBR? ";
if (GetYN() == 'Y') {
DestroyMBR();
} else {
cout << "MBR is unchanged. You may need to delete an EFI GPT (0xEE) partition\n"
<< "with fdisk or another tool.\n";
} // if/else
} else allOK = 0; // if GPT structures destroyed
} else allOK = 0; // if user confirms destruction
return (allOK);
} // GPTDataTextUI::DestroyGPTwPrompt()
// Get partition number from user and then call ShowPartDetails(partNum)
// to show its detailed information
void GPTDataTextUI::ShowDetails(void) {
int partNum;
uint32_t low, high;
if (GetPartRange(&low, &high) > 0) {
partNum = GetPartNum();
ShowPartDetails(partNum);
} else {
cout << "No partitions\n";
} // if/else
} // GPTDataTextUI::ShowDetails()
// Create a hybrid MBR -- an ugly, funky thing that helps GPT work with
// OSes that don't understand GPT.
void GPTDataTextUI::MakeHybrid(void) {
uint32_t partNums[3] = {0, 0, 0};
string line;
int numPartsToCvt = 0, numConverted = 0, i, j, mbrNum = 0;
unsigned int hexCode = 0;
MBRPart hybridPart;
MBRData hybridMBR;
char eeFirst = 'Y'; // Whether EFI GPT (0xEE) partition comes first in table
cout << "\nWARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,\n"
<< "just hit the Enter key at the below prompt and your MBR partition table will\n"
<< "be untouched.\n\n\a";
// Use a local MBR structure, copying from protectiveMBR to keep its
// boot loader code intact....
hybridMBR = protectiveMBR;
hybridMBR.EmptyMBR(0);
// Now get the numbers of up to three partitions to add to the
// hybrid MBR....
cout << "Type from one to three GPT partition numbers, separated by spaces, to be\n"
<< "added to the hybrid MBR, in sequence: ";
line = ReadString();
istringstream inLine(line);
do {
inLine >> partNums[numPartsToCvt];
if (partNums[numPartsToCvt] > 0)
numPartsToCvt++;
} while (!inLine.eof() && (numPartsToCvt < 3));
if (numPartsToCvt > 0) {
cout << "Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? ";
eeFirst = GetYN();
} // if
for (i = 0; i < numPartsToCvt; i++) {
j = partNums[i] - 1;
if (partitions[j].IsUsed() && (partitions[j].IsSizedForMBR() != MBR_SIZED_BAD)) {
mbrNum = i + (eeFirst == 'Y');
cout << "\nCreating entry for GPT partition #" << j + 1
<< " (MBR partition #" << mbrNum + 1 << ")\n";
hybridPart.SetType(GetMBRTypeCode(partitions[j].GetHexType() / 256));
hybridPart.SetLocation(partitions[j].GetFirstLBA(), partitions[j].GetLengthLBA());
hybridPart.SetInclusion(PRIMARY);
cout << "Set the bootable flag? ";
if (GetYN() == 'Y')
hybridPart.SetStatus(0x80);
else
hybridPart.SetStatus(0x00);
hybridPart.SetInclusion(PRIMARY);
if (partitions[j].IsSizedForMBR() == MBR_SIZED_IFFY)
WarnAboutIffyMBRPart(j + 1);
numConverted++;
} else {
cerr << "\nGPT partition #" << j + 1 << " does not exist or is too big; skipping.\n";
} // if/else
hybridMBR.AddPart(mbrNum, hybridPart);
} // for
if (numConverted > 0) { // User opted to create a hybrid MBR....
// Create EFI protective partition that covers the start of the disk.
// If this location (covering the main GPT data structures) is omitted,
// Linux won't find any partitions on the disk.
hybridPart.SetLocation(1, hybridMBR.FindLastInFree(1));
hybridPart.SetStatus(0);
hybridPart.SetType(0xEE);
hybridPart.SetInclusion(PRIMARY);
// newNote firstLBA and lastLBA are computed later...
if (eeFirst == 'Y') {
hybridMBR.AddPart(0, hybridPart);
} else {
hybridMBR.AddPart(numConverted, hybridPart);
} // else
hybridMBR.SetHybrid();
// ... and for good measure, if there are any partition spaces left,
// optionally create another protective EFI partition to cover as much
// space as possible....
if (hybridMBR.CountParts() < 4) { // unused entry....
cout << "\nUnused partition space(s) found. Use one to protect more partitions? ";
if (GetYN() == 'Y') {
cout << "Note: Default is 0xEE, but this may confuse Mac OS X.\n";
// Comment on above: Mac OS treats disks with more than one
// 0xEE MBR partition as MBR disks, not as GPT disks.
hexCode = GetMBRTypeCode(0xEE);
hybridMBR.MakeBiggestPart(3, hexCode);
} // if (GetYN() == 'Y')
} // if unused entry
protectiveMBR = hybridMBR;
} else {
cout << "\nNo partitions converted; original protective/hybrid MBR is unmodified!\n";
} // if/else (numConverted > 0)
} // GPTDataTextUI::MakeHybrid()
// Convert the GPT to MBR form, storing partitions in the protectiveMBR
// variable. This function is necessarily limited; it may not be able to
// convert all partitions, depending on the disk size and available space
// before each partition (one free sector is required to create a logical
// partition, which are necessary to convert more than four partitions).
// Returns the number of converted partitions; if this value
// is over 0, the calling function should call DestroyGPT() to destroy
// the GPT data, call SaveMBR() to save the MBR, and then exit.
int GPTDataTextUI::XFormToMBR(void) {
uint32_t i;
protectiveMBR.EmptyMBR(0);
for (i = 0; i < numParts; i++) {
if (partitions[i].IsUsed()) {
if (partitions[i].IsSizedForMBR() == MBR_SIZED_IFFY)
WarnAboutIffyMBRPart(i + 1);
// Note: MakePart() checks for oversized partitions, so don't
// bother checking other IsSizedForMBR() return values....
protectiveMBR.MakePart(i, partitions[i].GetFirstLBA(),
partitions[i].GetLengthLBA(),
partitions[i].GetHexType() / 0x0100, 0);
} // if
} // for
protectiveMBR.MakeItLegal();
return protectiveMBR.DoMenu();
} // GPTDataTextUI::XFormToMBR()
/******************************************************
* *
* Display informational messages for the user.... *
* *
******************************************************/
// Although an MBR partition that begins below sector 2^32 and is less than 2^32 sectors in
// length is technically legal even if it ends above the 2^32-sector mark, such a partition
// tends to confuse a lot of OSes, so warn the user about such partitions. This function is
// called by XFormToMBR() and MakeHybrid(); it's a separate function just to consolidate the
// lengthy message in one place.
void GPTDataTextUI::WarnAboutIffyMBRPart(int partNum) {
cout << "\a\nWarning! GPT partition " << partNum << " ends after the 2^32 sector mark! The partition\n"
<< "begins before this point, and is smaller than 2^32 sectors. This is technically\n"
<< "legal, but will confuse some OSes. The partition IS being added to the MBR, but\n"
<< "if your OS misbehaves or can't see the partition, the partition may simply be\n"
<< "unusable in that OS and may need to be resized or omitted from the MBR.\n\n";
} // GPTDataTextUI::WarnAboutIffyMBRPart()
/*********************************************************************
* *
* The following functions provide the main menus for the gdisk *
* program.... *
* *
*********************************************************************/
// Accept a command and execute it. Returns only when the user
// wants to exit (such as after a 'w' or 'q' command).
void GPTDataTextUI::MainMenu(string filename) {
int goOn = 1;
PartType typeHelper;
uint32_t temp1, temp2;
do {
cout << "\nCommand (? for help): ";
switch (ReadString()[0]) {
case '\0':
goOn = cin.good();
break;
case 'b': case 'B':
cout << "Enter backup filename to save: ";
SaveGPTBackup(ReadString());
break;
case 'c': case 'C':
if (GetPartRange(&temp1, &temp2) > 0)
SetName(GetPartNum());
else
cout << "No partitions\n";
break;
case 'd': case 'D':
DeletePartition();
break;
case 'i': case 'I':
ShowDetails();
break;
case 'l': case 'L':
typeHelper.ShowAllTypes();
break;
case 'n': case 'N':
CreatePartition();
break;
case 'o': case 'O':
cout << "This option deletes all partitions and creates a new protective MBR.\n"
<< "Proceed? ";
if (GetYN() == 'Y') {
ClearGPTData();
MakeProtectiveMBR();
} // if
break;
case 'p': case 'P':
DisplayGPTData();
break;
case 'q': case 'Q':
goOn = 0;
break;
case 'r': case 'R':
RecoveryMenu(filename);
goOn = 0;
break;
case 's': case 'S':
SortGPT();
cout << "You may need to edit /etc/fstab and/or your boot loader configuration!\n";
break;
case 't': case 'T':
ChangePartType();
break;
case 'v': case 'V':
Verify();
break;
case 'w': case 'W':
if (SaveGPTData() == 1)
goOn = 0;
break;
case 'x': case 'X':
ExpertsMenu(filename);
goOn = 0;
break;
default:
ShowCommands();
break;
} // switch
} while (goOn);
} // GPTDataTextUI::MainMenu()
void GPTDataTextUI::ShowCommands(void) {
cout << "b\tback up GPT data to a file\n";
cout << "c\tchange a partition's name\n";
cout << "d\tdelete a partition\n";
cout << "i\tshow detailed information on a partition\n";
cout << "l\tlist known partition types\n";
cout << "n\tadd a new partition\n";
cout << "o\tcreate a new empty GUID partition table (GPT)\n";
cout << "p\tprint the partition table\n";
cout << "q\tquit without saving changes\n";
cout << "r\trecovery and transformation options (experts only)\n";
cout << "s\tsort partitions\n";
cout << "t\tchange a partition's type code\n";
cout << "v\tverify disk\n";
cout << "w\twrite table to disk and exit\n";
cout << "x\textra functionality (experts only)\n";
cout << "?\tprint this menu\n";
} // GPTDataTextUI::ShowCommands()
// Accept a recovery & transformation menu command. Returns only when the user
// issues an exit command, such as 'w' or 'q'.
void GPTDataTextUI::RecoveryMenu(string filename) {
uint32_t numParts;
int goOn = 1, temp1;
do {
cout << "\nRecovery/transformation command (? for help): ";
switch (ReadString()[0]) {
case '\0':
goOn = cin.good();
break;
case 'b': case 'B':
RebuildMainHeader();
break;
case 'c': case 'C':
cout << "Warning! This will probably do weird things if you've converted an MBR to\n"
<< "GPT form and haven't yet saved the GPT! Proceed? ";
if (GetYN() == 'Y')
LoadSecondTableAsMain();
break;
case 'd': case 'D':
RebuildSecondHeader();
break;
case 'e': case 'E':
cout << "Warning! This will probably do weird things if you've converted an MBR to\n"
<< "GPT form and haven't yet saved the GPT! Proceed? ";
if (GetYN() == 'Y')
LoadMainTable();
break;
case 'f': case 'F':
cout << "Warning! This will destroy the currently defined partitions! Proceed? ";
if (GetYN() == 'Y') {
if (LoadMBR(filename) == 1) { // successful load
XFormPartitions();
} else {
cout << "Problem loading MBR! GPT is untouched; regenerating protective MBR!\n";
MakeProtectiveMBR();
} // if/else
} // if
break;
case 'g': case 'G':
numParts = GetNumParts();
temp1 = XFormToMBR();
if (temp1 > 0)
cout << "\nConverted " << temp1 << " partitions. Finalize and exit? ";
if ((temp1 > 0) && (GetYN() == 'Y')) {
if ((DestroyGPT() > 0) && (SaveMBR())) {
goOn = 0;
} // if
} else {
MakeProtectiveMBR();
SetGPTSize(numParts, 0);
cout << "Note: New protective MBR created\n\n";
} // if/else
break;
case 'h': case 'H':
MakeHybrid();
break;
case 'i': case 'I':
ShowDetails();
break;
case 'l': case 'L':
cout << "Enter backup filename to load: ";
LoadGPTBackup(ReadString());
break;
case 'm': case 'M':
MainMenu(filename);
goOn = 0;
break;
case 'o': case 'O':
DisplayMBRData();
break;
case 'p': case 'P':
DisplayGPTData();
break;
case 'q': case 'Q':
goOn = 0;
break;
case 't': case 'T':
XFormDisklabel();
break;
case 'v': case 'V':
Verify();
break;
case 'w': case 'W':
if (SaveGPTData() == 1) {
goOn = 0;
} // if
break;
case 'x': case 'X':
ExpertsMenu(filename);
goOn = 0;
break;
default:
ShowRecoveryCommands();
break;
} // switch
} while (goOn);
} // GPTDataTextUI::RecoveryMenu()
void GPTDataTextUI::ShowRecoveryCommands(void) {
cout << "b\tuse backup GPT header (rebuilding main)\n";
cout << "c\tload backup partition table from disk (rebuilding main)\n";
cout << "d\tuse main GPT header (rebuilding backup)\n";
cout << "e\tload main partition table from disk (rebuilding backup)\n";
cout << "f\tload MBR and build fresh GPT from it\n";
cout << "g\tconvert GPT into MBR and exit\n";
cout << "h\tmake hybrid MBR\n";
cout << "i\tshow detailed information on a partition\n";
cout << "l\tload partition data from a backup file\n";
cout << "m\treturn to main menu\n";
cout << "o\tprint protective MBR data\n";
cout << "p\tprint the partition table\n";
cout << "q\tquit without saving changes\n";
cout << "t\ttransform BSD disklabel partition\n";
cout << "v\tverify disk\n";
cout << "w\twrite table to disk and exit\n";
cout << "x\textra functionality (experts only)\n";
cout << "?\tprint this menu\n";
} // GPTDataTextUI::ShowRecoveryCommands()
// Accept an experts' menu command. Returns only after the user
// selects an exit command, such as 'w' or 'q'.
void GPTDataTextUI::ExpertsMenu(string filename) {
GPTData secondDevice;
uint32_t temp1, temp2;
int goOn = 1;
string guidStr, device;
GUIDData aGUID;
ostringstream prompt;
do {
cout << "\nExpert command (? for help): ";
switch (ReadString()[0]) {
case '\0':
goOn = cin.good();
break;
case 'a': case 'A':
if (GetPartRange(&temp1, &temp2) > 0)
SetAttributes(GetPartNum());
else
cout << "No partitions\n";
break;
case 'c': case 'C':
ChangeUniqueGuid();
break;
case 'd': case 'D':
cout << "Partitions will begin on " << GetAlignment()
<< "-sector boundaries.\n";
break;
case 'e': case 'E':
cout << "Relocating backup data structures to the end of the disk\n";
MoveSecondHeaderToEnd();
break;
case 'f': case 'F':
RandomizeGUIDs();
break;
case 'g': case 'G':
cout << "Enter the disk's unique GUID ('R' to randomize): ";
guidStr = ReadString();
if ((guidStr.length() >= 32) || (guidStr[0] == 'R') || (guidStr[0] == 'r')) {
SetDiskGUID((GUIDData) guidStr);
cout << "The new disk GUID is " << GetDiskGUID() << "\n";
} else {
cout << "GUID is too short!\n";
} // if/else
break;
case 'h': case 'H':
RecomputeCHS();
break;
case 'i': case 'I':
ShowDetails();
break;
case 'l': case 'L':
prompt.seekp(0);
prompt << "Enter the sector alignment value (1-" << MAX_ALIGNMENT << ", default = "
<< DEFAULT_ALIGNMENT << "): ";
temp1 = GetNumber(1, MAX_ALIGNMENT, DEFAULT_ALIGNMENT, prompt.str());
SetAlignment(temp1);
break;
case 'm': case 'M':
MainMenu(filename);
goOn = 0;
break;
case 'n': case 'N':
MakeProtectiveMBR();
break;
case 'o': case 'O':
DisplayMBRData();
break;
case 'p': case 'P':
DisplayGPTData();
break;
case 'q': case 'Q':
goOn = 0;
break;
case 'r': case 'R':
RecoveryMenu(filename);
goOn = 0;
break;
case 's': case 'S':
ResizePartitionTable();
break;
case 't': case 'T':
SwapPartitions();
break;
case 'u': case 'U':
cout << "Type device filename, or press <Enter> to exit: ";
device = ReadString();
if (device.length() > 0) {
secondDevice = *this;
secondDevice.SetDisk(device);
secondDevice.SaveGPTData(0);
} // if
break;
case 'v': case 'V':
Verify();
break;
case 'w': case 'W':
if (SaveGPTData() == 1) {
goOn = 0;
} // if
break;
case 'z': case 'Z':
if (DestroyGPTwPrompt() == 1) {
goOn = 0;
}
break;
default:
ShowExpertCommands();
break;
} // switch
} while (goOn);
} // GPTDataTextUI::ExpertsMenu()
void GPTDataTextUI::ShowExpertCommands(void) {
cout << "a\tset attributes\n";
cout << "c\tchange partition GUID\n";
cout << "d\tdisplay the sector alignment value\n";
cout << "e\trelocate backup data structures to the end of the disk\n";
cout << "g\tchange disk GUID\n";
cout << "h\trecompute CHS values in protective/hybrid MBR\n";
cout << "i\tshow detailed information on a partition\n";
cout << "l\tset the sector alignment value\n";
cout << "m\treturn to main menu\n";
cout << "n\tcreate a new protective MBR\n";
cout << "o\tprint protective MBR data\n";
cout << "p\tprint the partition table\n";
cout << "q\tquit without saving changes\n";
cout << "r\trecovery and transformation options (experts only)\n";
cout << "s\tresize partition table\n";
cout << "t\ttranspose two partition table entries\n";
cout << "u\treplicate partition table on new device\n";
cout << "v\tverify disk\n";
cout << "w\twrite table to disk and exit\n";
cout << "z\tzap (destroy) GPT data structures and exit\n";
cout << "?\tprint this menu\n";
} // GPTDataTextUI::ShowExpertCommands()
/********************************
* *
* Non-class support functions. *
* *
********************************/
// GetMBRTypeCode() doesn't really belong in the class, since it's MBR-
// specific, but it's also user I/O-related, so I want to keep it in
// this file....
// Get an MBR type code from the user and return it
int GetMBRTypeCode(int defType) {
string line;
int typeCode;
cout.setf(ios::uppercase);
cout.fill('0');
do {
cout << "Enter an MBR hex code (default " << hex;
cout.width(2);
cout << defType << "): " << dec;
line = ReadString();
if (line[0] == '\0')
typeCode = defType;
else
typeCode = StrToHex(line, 0);
} while ((typeCode <= 0) || (typeCode > 255));
cout.fill(' ');
return typeCode;
} // GetMBRTypeCode
#ifdef USE_UTF16
// Note: ReadUString() is here rather than in support.cc so that the ICU
// libraries need not be linked to fixparts.
// Reads a Unicode string from stdin, returning it as an ICU-style string.
// Note that the returned string will NOT include the carriage return
// entered by the user. Relies on the ICU constructor from a string
// encoded in the current codepage to work.
UnicodeString ReadUString(void) {
return ReadString().c_str();
} // ReadUString()
#endif