sgdisk - исходный текст #include "gptcl.h"
using namespace std;
#define MAX_OPTIONS 50
int main(int argc, char *argv[]) {
GPTDataCL theGPT;
return theGPT.DoOptions(argc, argv);
} // main
-------------------------
gptcl.cc
#include <string.h>
#include <string>
#include <iostream>
#include <sstream>
#include <errno.h>
#include <popt.h>
#include "gptcl.h"
GPTDataCL::GPTDataCL(void) {
attributeOperation = backupFile = partName = hybrids = newPartInfo = NULL;
mbrParts = twoParts = outDevice = typeCode = partGUID = diskGUID = NULL;
alignment = DEFAULT_ALIGNMENT;
deletePartNum = infoPartNum = largestPartNum = bsdPartNum = 0;
tableSize = GPT_SIZE;
} // GPTDataCL constructor
GPTDataCL::GPTDataCL(string filename) {
} // GPTDataCL constructor with filename
GPTDataCL::~GPTDataCL(void) {
} // GPTDataCL destructor
void GPTDataCL::LoadBackupFile(string backupFile, int &saveData, int &neverSaveData) {
if (LoadGPTBackup(backupFile) == 1) {
JustLooking(0);
saveData = 1;
} else {
saveData = 0;
neverSaveData = 1;
cerr << "Error loading backup file!\n";
} // else
} //
// Perform the actions specified on the command line. This is necessarily one
// monster of a function!
// Returns values:
// 0 = success
// 1 = too few arguments
// 2 = error when reading partition table
// 3 = non-GPT disk and no -g option
// 4 = unable to save changes
// 8 = disk replication operation (-R) failed
int GPTDataCL::DoOptions(int argc, char* argv[]) {
GPTData secondDevice;
int opt, numOptions = 0, saveData = 0, neverSaveData = 0;
int partNum = 0, saveNonGPT = 1, retval = 0, pretend = 0;
uint32_t gptPartNum = 0, low, high;
uint64_t startSector, endSector, sSize;
uint64_t temp; // temporary variable; free to use in any case
char *device;
string cmd, typeGUID, name;
PartType typeHelper;
struct poptOption theOptions[] =
{
{"attributes", 'A', POPT_ARG_STRING, &attributeOperation, 'A', "operate on partition attributes", "list|[partnum:show|or|nand|xor|=|set|clear|toggle|get[:bitnum|hexbitmask]]"},
{"set-alignment", 'a', POPT_ARG_INT, &alignment, 'a', "set sector alignment", "value"},
{"backup", 'b', POPT_ARG_STRING, &backupFile, 'b', "backup GPT to file", "file"},
{"change-name", 'c', POPT_ARG_STRING, &partName, 'c', "change partition's name", "partnum:name"},
{"recompute-chs", 'C', POPT_ARG_NONE, NULL, 'C', "recompute CHS values in protective/hybrid MBR", ""},
{"delete", 'd', POPT_ARG_INT, &deletePartNum, 'd', "delete a partition", "partnum"},
{"display-alignment", 'D', POPT_ARG_NONE, NULL, 'D', "show number of sectors per allocation block", ""},
{"move-second-header", 'e', POPT_ARG_NONE, NULL, 'e', "move second header to end of disk", ""},
{"end-of-largest", 'E', POPT_ARG_NONE, NULL, 'E', "show end of largest free block", ""},
{"first-in-largest", 'f', POPT_ARG_NONE, NULL, 'f', "show start of the largest free block", ""},
{"first-aligned-in-largest", 'F', POPT_ARG_NONE, NULL, 'F', "show start of the largest free block, aligned", ""},
{"mbrtogpt", 'g', POPT_ARG_NONE, NULL, 'g', "convert MBR to GPT", ""},
{"randomize-guids", 'G', POPT_ARG_NONE, NULL, 'G', "randomize disk and partition GUIDs", ""},
{"hybrid", 'h', POPT_ARG_STRING, &hybrids, 'h', "create hybrid MBR", "partnum[:partnum...]"},
{"info", 'i', POPT_ARG_INT, &infoPartNum, 'i', "show detailed information on partition", "partnum"},
{"load-backup", 'l', POPT_ARG_STRING, &backupFile, 'l', "load GPT backup from file", "file"},
{"list-types", 'L', POPT_ARG_NONE, NULL, 'L', "list known partition types", ""},
{"gpttombr", 'm', POPT_ARG_STRING, &mbrParts, 'm', "convert GPT to MBR", "partnum[:partnum...]"},
{"new", 'n', POPT_ARG_STRING, &newPartInfo, 'n', "create new partition", "partnum:start:end"},
{"largest-new", 'N', POPT_ARG_INT, &largestPartNum, 'N', "create largest possible new partition", "partnum"},
{"clear", 'o', POPT_ARG_NONE, NULL, 'o', "clear partition table", ""},
{"print", 'p', POPT_ARG_NONE, NULL, 'p', "print partition table", ""},
{"pretend", 'P', POPT_ARG_NONE, NULL, 'P', "make changes in memory, but don't write them", ""},
{"transpose", 'r', POPT_ARG_STRING, &twoParts, 'r', "transpose two partitions", "partnum:partnum"},
{"replicate", 'R', POPT_ARG_STRING, &outDevice, 'R', "replicate partition table", "device_filename"},
{"sort", 's', POPT_ARG_NONE, NULL, 's', "sort partition table entries", ""},
{"resize-table", 'S', POPT_ARG_INT, &tableSize, 'S', "resize partition table", "numparts"},
{"typecode", 't', POPT_ARG_STRING, &typeCode, 't', "change partition type code", "partnum:{hexcode|GUID}"},
{"transform-bsd", 'T', POPT_ARG_INT, &bsdPartNum, 'T', "transform BSD disklabel partition to GPT", "partnum"},
{"partition-guid", 'u', POPT_ARG_STRING, &partGUID, 'u', "set partition GUID", "partnum:guid"},
{"disk-guid", 'U', POPT_ARG_STRING, &diskGUID, 'U', "set disk GUID", "guid"},
{"verify", 'v', POPT_ARG_NONE, NULL, 'v', "check partition table integrity", ""},
{"version", 'V', POPT_ARG_NONE, NULL, 'V', "display version information", ""},
{"zap", 'z', POPT_ARG_NONE, NULL, 'z', "zap (destroy) GPT (but not MBR) data structures", ""},
{"zap-all", 'Z', POPT_ARG_NONE, NULL, 'Z', "zap (destroy) GPT and MBR data structures", ""},
POPT_AUTOHELP { NULL, 0, 0, NULL, 0 }
};
// Create popt context...
poptCon = poptGetContext(NULL, argc, (const char**) argv, theOptions, 0);
poptSetOtherOptionHelp(poptCon, " [OPTION...] <device>");
if (argc < 2) {
poptPrintUsage(poptCon, stderr, 0);
return 1;
}
// Do one loop through the options to find the device filename and deal
// with options that don't require a device filename, to flag destructive
// (o, z, or Z) options, and to flag presence of an
while ((opt = poptGetNextOpt(poptCon)) > 0) {
switch (opt) {
case 'A':
cmd = GetString(attributeOperation, 1);
if (cmd == "list")
Attributes::ListAttributes();
break;
case 'L':
typeHelper.ShowAllTypes();
break;
case 'P':
pretend = 1;
break;
case 'V':
cout << "GPT fdisk (sgdisk) version " << GPTFDISK_VERSION << "\n\n";
break;
default:
break;
} // switch
numOptions++;
} // while
// Assume first non-option argument is the device filename....
device = (char*) poptGetArg(poptCon);
poptResetContext(poptCon);
if (device != NULL) {
JustLooking(); // reset as necessary
BeQuiet(); // Tell called functions to be less verbose & interactive
if (LoadPartitions((string) device)) {
if ((WhichWasUsed() == use_mbr) || (WhichWasUsed() == use_bsd))
saveNonGPT = 0; // flag so we don't overwrite unless directed to do so
sSize = GetBlockSize();
while ((opt = poptGetNextOpt(poptCon)) > 0) {
switch (opt) {
case 'A': {
if (cmd != "list") {
partNum = (int) GetInt(attributeOperation, 1) - 1;
if ((partNum >= 0) && (partNum < (int) GetNumParts())) {
switch (ManageAttributes(partNum, GetString(attributeOperation, 2),
GetString(attributeOperation, 3))) {
case -1:
saveData = 0;
neverSaveData = 1;
break;
case 1:
JustLooking(0);
saveData = 1;
break;
default:
break;
} // switch
} else {
cerr << "Error: Invalid partition number " << partNum + 1 << "\n";
saveData = 0;
neverSaveData = 1;
} // if/else reasonable partition #
} // if (cmd != "list")
break;
} // case 'A':
case 'a':
SetAlignment(alignment);
break;
case 'b':
SaveGPTBackup(backupFile);
free(backupFile);
break;
case 'c':
JustLooking(0);
partNum = (int) GetInt(partName, 1) - 1;
name = GetString(partName, 2);
if (SetName(partNum, (UnicodeString) name.c_str())) {
saveData = 1;
} else {
cerr << "Unable to set partition " << partNum + 1
<< "'s name to '" << GetString(partName, 2) << "'!\n";
neverSaveData = 1;
} // if/else
free(partName);
break;
case 'C':
JustLooking(0);
RecomputeCHS();
saveData = 1;
break;
case 'd':
JustLooking(0);
if (DeletePartition(deletePartNum - 1) == 0) {
cerr << "Error " << errno << " deleting partition!\n";
neverSaveData = 1;
} else saveData = 1;
break;
case 'D':
cout << GetAlignment() << "\n";
break;
case 'e':
JustLooking(0);
MoveSecondHeaderToEnd();
saveData = 1;
break;
case 'E':
cout << FindLastInFree(FindFirstInLargest()) << "\n";
break;
case 'f':
cout << FindFirstInLargest() << "\n";
break;
case 'F':
temp = FindFirstInLargest();
Align(&temp);
cout << temp << "\n";
break;
case 'g':
JustLooking(0);
saveData = 1;
saveNonGPT = 1;
break;
case 'G':
JustLooking(0);
saveData = 1;
RandomizeGUIDs();
break;
case 'h':
JustLooking(0);
if (BuildMBR(hybrids, 1) == 1)
saveData = 1;
break;
case 'i':
ShowPartDetails(infoPartNum - 1);
break;
case 'l':
LoadBackupFile(backupFile, saveData, neverSaveData);
free(backupFile);
break;
case 'L':
break;
case 'm':
JustLooking(0);
if (BuildMBR(mbrParts, 0) == 1) {
if (!pretend) {
if (SaveMBR()) {
DestroyGPT();
} else
cerr << "Problem saving MBR!\n";
} // if
saveNonGPT = 0;
pretend = 1; // Not really, but works around problem if -g is used with this...
saveData = 0;
} // if
break;
case 'n':
JustLooking(0);
partNum = (int) GetInt(newPartInfo, 1) - 1;
if (partNum < 0)
partNum = FindFirstFreePart();
low = FindFirstInLargest();
high = FindLastInFree(low);
startSector = IeeeToInt(GetString(newPartInfo, 2), sSize, low, high, low);
endSector = IeeeToInt(GetString(newPartInfo, 3), sSize, startSector, high, high);
if (CreatePartition(partNum, startSector, endSector)) {
saveData = 1;
} else {
cerr << "Could not create partition " << partNum + 1 << " from "
<< startSector << " to " << endSector << "\n";
neverSaveData = 1;
} // if/else
free(newPartInfo);
break;
case 'N':
JustLooking(0);
startSector = FindFirstInLargest();
endSector = FindLastInFree(startSector);
if (largestPartNum < 0)
largestPartNum = FindFirstFreePart();
if (CreatePartition(largestPartNum - 1, startSector, endSector)) {
saveData = 1;
} else {
cerr << "Could not create partition " << largestPartNum << " from "
<< startSector << " to " << endSector << "\n";
neverSaveData = 1;
} // if/else
break;
case 'o':
JustLooking(0);
ClearGPTData();
saveData = 1;
break;
case 'p':
DisplayGPTData();
break;
case 'P':
pretend = 1;
break;
case 'r':
JustLooking(0);
uint64_t p1, p2;
p1 = GetInt(twoParts, 1) - 1;
p2 = GetInt(twoParts, 2) - 1;
if (SwapPartitions((uint32_t) p1, (uint32_t) p2) == 0) {
neverSaveData = 1;
cerr << "Cannot swap partitions " << p1 + 1 << " and " << p2 + 1 << "\n";
} else saveData = 1;
break;
case 'R':
secondDevice = *this;
secondDevice.SetDisk(outDevice);
secondDevice.JustLooking(0);
if (!secondDevice.SaveGPTData(1))
retval = 8;
break;
case 's':
JustLooking(0);
SortGPT();
saveData = 1;
break;
case 'S':
JustLooking(0);
if (SetGPTSize(tableSize) == 0)
neverSaveData = 1;
else
saveData = 1;
break;
case 't':
JustLooking(0);
partNum = (int) GetInt(typeCode, 1) - 1;
typeHelper = GetString(typeCode, 2);
if ((typeHelper != (GUIDData) "00000000-0000-0000-0000-000000000000") &&
(ChangePartType(partNum, typeHelper))) {
saveData = 1;
} else {
cerr << "Could not change partition " << partNum + 1
<< "'s type code to " << GetString(typeCode, 2) << "!\n";
neverSaveData = 1;
} // if/else
free(typeCode);
break;
case 'T':
JustLooking(0);
XFormDisklabel(bsdPartNum - 1);
saveData = 1;
break;
case 'u':
JustLooking(0);
saveData = 1;
gptPartNum = (int) GetInt(partGUID, 1) - 1;
SetPartitionGUID(gptPartNum, GetString(partGUID, 2).c_str());
break;
case 'U':
JustLooking(0);
saveData = 1;
SetDiskGUID(diskGUID);
break;
case 'v':
Verify();
break;
case 'z':
if (!pretend) {
DestroyGPT();
} // if
saveNonGPT = 0;
saveData = 0;
break;
case 'Z':
if (!pretend) {
DestroyGPT();
DestroyMBR();
} // if
saveNonGPT = 0;
saveData = 0;
break;
default:
cerr << "Unknown option (-" << opt << ")!\n";
break;
} // switch
} // while
} else { // if loaded OK
poptResetContext(poptCon);
// Do a few types of operations even if there are problems....
while ((opt = poptGetNextOpt(poptCon)) > 0) {
switch (opt) {
case 'l':
LoadBackupFile(backupFile, saveData, neverSaveData);
cout << "Information: Loading backup partition table; will override earlier problems!\n";
free(backupFile);
retval = 0;
break;
case 'o':
JustLooking(0);
ClearGPTData();
saveData = 1;
cout << "Information: Creating fresh partition table; will override earlier problems!\n";
retval = 0;
break;
case 'v':
cout << "Verification may miss some problems or report too many!\n";
Verify();
break;
case 'z':
if (!pretend) {
DestroyGPT();
} // if
saveNonGPT = 0;
saveData = 0;
break;
case 'Z':
if (!pretend) {
DestroyGPT();
DestroyMBR();
} // if
saveNonGPT = 0;
saveData = 0;
break;
} // switch
} // while
retval = 2;
} // if/else loaded OK
if ((saveData) && (!neverSaveData) && (saveNonGPT) && (!pretend)) {
SaveGPTData(1);
}
if (saveData && (!saveNonGPT)) {
cout << "Non-GPT disk; not saving changes. Use -g to override.\n";
retval = 3;
} // if
if (neverSaveData) {
cerr << "Error encountered; not saving changes.\n";
retval = 4;
} // if
} // if (device != NULL)
poptFreeContext(poptCon);
return retval;
} // GPTDataCL::DoOptions()
// Create a hybrid or regular MBR from GPT data structures
int GPTDataCL::BuildMBR(char* argument, int isHybrid) {
int numParts, allOK = 1, i, origPartNum;
MBRPart newPart;
BasicMBRData newMBR;
if (argument != NULL) {
numParts = CountColons(argument) + 1;
if (numParts <= (4 - isHybrid)) {
newMBR.SetDisk(GetDisk());
for (i = 0; i < numParts; i++) {
origPartNum = GetInt(argument, i + 1) - 1;
if (IsUsedPartNum(origPartNum)) {
newPart.SetInclusion(PRIMARY);
newPart.SetLocation(operator[](origPartNum).GetFirstLBA(),
operator[](origPartNum).GetLengthLBA());
newPart.SetStatus(0);
newPart.SetType((uint8_t)(operator[](origPartNum).GetHexType() / 0x0100));
newMBR.AddPart(i + isHybrid, newPart);
} else {
cerr << "Partition " << origPartNum << " does not exist! Aborting operation!\n";
allOK = 0;
} // if/else
} // for
if (isHybrid) {
newPart.SetInclusion(PRIMARY);
newPart.SetLocation(1, newMBR.FindLastInFree(1));
newPart.SetStatus(0);
newPart.SetType(0xEE);
newMBR.AddPart(0, newPart);
} // if
SetProtectiveMBR(newMBR);
} else allOK = 0;
} else allOK = 0;
if (!allOK)
cerr << "Problem creating MBR!\n";
return allOK;
} // GPTDataCL::BuildMBR()
// Returns the number of colons in argument string, ignoring the
// first character (thus, a leading colon is ignored, as GetString()
// does).
int CountColons(char* argument) {
int num = 0;
while ((argument[0] != '\0') && (argument = strchr(&argument[1], ':')))
num++;
return num;
} // GPTDataCL::CountColons()
// Extract integer data from argument string, which should be colon-delimited
uint64_t GetInt(const string & argument, int itemNum) {
uint64_t retval;
istringstream inString(GetString(argument, itemNum));
inString >> retval;
return retval;
} // GPTDataCL::GetInt()
// Extract string data from argument string, which should be colon-delimited
// If string begins with a colon, that colon is skipped in the counting. If an
// invalid itemNum is specified, returns an empty string.
string GetString(string argument, int itemNum) {
size_t startPos = 0, endPos = 0;
string retVal = "";
int foundLast = 0;
int numFound = 0;
if (argument[0] == ':')
argument.erase(0, 1);
while ((numFound < itemNum) && (!foundLast)) {
endPos = argument.find(':', startPos);
numFound++;
if (endPos == string::npos) {
foundLast = 1;
endPos = argument.length();
} else if (numFound < itemNum) {
startPos = endPos + 1;
} // if/elseif
} // while
if ((numFound == itemNum) && (numFound > 0))
retVal = argument.substr(startPos, endPos - startPos);
return retVal;
} // GetString()
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