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600 lines
24 KiB
600 lines
24 KiB
/*
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Implementation of GPTData class derivative with popt-based command
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line processing
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Copyright (C) 2010-2014 Roderick W. Smith
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include <string>
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#include <iostream>
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#include <sstream>
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#include <errno.h>
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#include "gptcl.h"
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GPTDataCL::GPTDataCL(void) {
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attributeOperation = backupFile = partName = hybrids = newPartInfo = NULL;
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mbrParts = twoParts = outDevice = typeCode = partGUID = diskGUID = NULL;
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alignment = DEFAULT_ALIGNMENT;
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deletePartNum = infoPartNum = largestPartNum = bsdPartNum = 0;
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tableSize = GPT_SIZE;
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} // GPTDataCL constructor
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GPTDataCL::GPTDataCL(string filename) {
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} // GPTDataCL constructor with filename
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GPTDataCL::~GPTDataCL(void) {
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} // GPTDataCL destructor
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void GPTDataCL::LoadBackupFile(string backupFile, int &saveData, int &neverSaveData) {
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if (LoadGPTBackup(backupFile) == 1) {
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JustLooking(0);
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saveData = 1;
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} else {
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saveData = 0;
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neverSaveData = 1;
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cerr << "Error loading backup file!\n";
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} // else
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} // GPTDataCL::LoadBackupFile()
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// Perform the actions specified on the command line. This is necessarily one
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// monster of a function!
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// Returns values:
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// 0 = success
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// 1 = too few arguments
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// 2 = error when reading partition table
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// 3 = non-GPT disk and no -g option
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// 4 = unable to save changes
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// 8 = disk replication operation (-R) failed
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int GPTDataCL::DoOptions(int argc, char* argv[]) {
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GPTData secondDevice;
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int opt, numOptions = 0, saveData = 0, neverSaveData = 0;
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int partNum = 0, newPartNum = -1, saveNonGPT = 1, retval = 0, pretend = 0;
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uint64_t low, high, startSector, endSector, sSize, mainTableLBA;
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uint64_t temp; // temporary variable; free to use in any case
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char *device;
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string cmd, typeGUID, name;
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PartType typeHelper;
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struct poptOption theOptions[] =
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{
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{"attributes", 'A', POPT_ARG_STRING, &attributeOperation, 'A', "operate on partition attributes",
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"list|[partnum:show|or|nand|xor|=|set|clear|toggle|get[:bitnum|hexbitmask]]"},
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{"set-alignment", 'a', POPT_ARG_INT, &alignment, 'a', "set sector alignment", "value"},
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{"backup", 'b', POPT_ARG_STRING, &backupFile, 'b', "backup GPT to file", "file"},
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{"change-name", 'c', POPT_ARG_STRING, &partName, 'c', "change partition's name", "partnum:name"},
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{"recompute-chs", 'C', POPT_ARG_NONE, NULL, 'C', "recompute CHS values in protective/hybrid MBR", ""},
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{"delete", 'd', POPT_ARG_INT, &deletePartNum, 'd', "delete a partition", "partnum"},
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{"display-alignment", 'D', POPT_ARG_NONE, NULL, 'D', "show number of sectors per allocation block", ""},
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{"move-second-header", 'e', POPT_ARG_NONE, NULL, 'e', "move second header to end of disk", ""},
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{"end-of-largest", 'E', POPT_ARG_NONE, NULL, 'E', "show end of largest free block", ""},
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{"first-in-largest", 'f', POPT_ARG_NONE, NULL, 'f', "show start of the largest free block", ""},
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{"first-aligned-in-largest", 'F', POPT_ARG_NONE, NULL, 'F', "show start of the largest free block, aligned", ""},
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{"mbrtogpt", 'g', POPT_ARG_NONE, NULL, 'g', "convert MBR to GPT", ""},
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{"randomize-guids", 'G', POPT_ARG_NONE, NULL, 'G', "randomize disk and partition GUIDs", ""},
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{"hybrid", 'h', POPT_ARG_STRING, &hybrids, 'h', "create hybrid MBR", "partnum[:partnum...][:EE]"},
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{"info", 'i', POPT_ARG_INT, &infoPartNum, 'i', "show detailed information on partition", "partnum"},
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{"move-main-table", 'j', POPT_ARG_INT, &mainTableLBA, 'j', "adjust the location of the main partition table", "sector"},
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{"load-backup", 'l', POPT_ARG_STRING, &backupFile, 'l', "load GPT backup from file", "file"},
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{"list-types", 'L', POPT_ARG_NONE, NULL, 'L', "list known partition types", ""},
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{"gpttombr", 'm', POPT_ARG_STRING, &mbrParts, 'm', "convert GPT to MBR", "partnum[:partnum...]"},
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{"new", 'n', POPT_ARG_STRING, &newPartInfo, 'n', "create new partition", "partnum:start:end"},
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{"largest-new", 'N', POPT_ARG_INT, &largestPartNum, 'N', "create largest possible new partition", "partnum"},
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{"clear", 'o', POPT_ARG_NONE, NULL, 'o', "clear partition table", ""},
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{"print-mbr", 'O', POPT_ARG_NONE, NULL, 'O', "print MBR partition table", ""},
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{"print", 'p', POPT_ARG_NONE, NULL, 'p', "print partition table", ""},
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{"pretend", 'P', POPT_ARG_NONE, NULL, 'P', "make changes in memory, but don't write them", ""},
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{"transpose", 'r', POPT_ARG_STRING, &twoParts, 'r', "transpose two partitions", "partnum:partnum"},
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{"replicate", 'R', POPT_ARG_STRING, &outDevice, 'R', "replicate partition table", "device_filename"},
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{"sort", 's', POPT_ARG_NONE, NULL, 's', "sort partition table entries", ""},
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{"resize-table", 'S', POPT_ARG_INT, &tableSize, 'S', "resize partition table", "numparts"},
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{"typecode", 't', POPT_ARG_STRING, &typeCode, 't', "change partition type code", "partnum:{hexcode|GUID}"},
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{"transform-bsd", 'T', POPT_ARG_INT, &bsdPartNum, 'T', "transform BSD disklabel partition to GPT", "partnum"},
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{"partition-guid", 'u', POPT_ARG_STRING, &partGUID, 'u', "set partition GUID", "partnum:guid"},
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{"disk-guid", 'U', POPT_ARG_STRING, &diskGUID, 'U', "set disk GUID", "guid"},
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{"verify", 'v', POPT_ARG_NONE, NULL, 'v', "check partition table integrity", ""},
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{"version", 'V', POPT_ARG_NONE, NULL, 'V', "display version information", ""},
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{"zap", 'z', POPT_ARG_NONE, NULL, 'z', "zap (destroy) GPT (but not MBR) data structures", ""},
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{"zap-all", 'Z', POPT_ARG_NONE, NULL, 'Z', "zap (destroy) GPT and MBR data structures", ""},
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POPT_AUTOHELP { NULL, 0, 0, NULL, 0, NULL, NULL }
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};
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// Create popt context...
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poptCon = poptGetContext(NULL, argc, (const char**) argv, theOptions, 0);
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poptSetOtherOptionHelp(poptCon, " [OPTION...] <device>");
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if (argc < 2) {
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poptPrintUsage(poptCon, stderr, 0);
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return 1;
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}
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// Do one loop through the options to find the device filename and deal
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// with options that don't require a device filename, to flag destructive
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// (o, z, or Z) options, and to flag presence of a --pretend/-P option
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while ((opt = poptGetNextOpt(poptCon)) > 0) {
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switch (opt) {
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case 'A':
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cmd = GetString(attributeOperation, 1);
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if (cmd == "list")
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Attributes::ListAttributes();
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break;
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case 'L':
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typeHelper.ShowAllTypes(0);
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break;
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case 'P':
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pretend = 1;
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break;
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case 'V':
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cout << "GPT fdisk (sgdisk) version " << GPTFDISK_VERSION << "\n\n";
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break;
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default:
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break;
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} // switch
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numOptions++;
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} // while
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// Assume first non-option argument is the device filename....
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device = (char*) poptGetArg(poptCon);
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poptResetContext(poptCon);
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if (device != NULL) {
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JustLooking(); // reset as necessary
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BeQuiet(); // Tell called functions to be less verbose & interactive
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if (LoadPartitions((string) device)) {
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if ((WhichWasUsed() == use_mbr) || (WhichWasUsed() == use_bsd))
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saveNonGPT = 0; // flag so we don't overwrite unless directed to do so
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sSize = GetBlockSize();
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while ((opt = poptGetNextOpt(poptCon)) > 0) {
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switch (opt) {
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case 'A': {
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if (cmd != "list") {
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partNum = (int) GetInt(attributeOperation, 1) - 1;
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if (partNum < 0)
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partNum = newPartNum;
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if ((partNum >= 0) && (partNum < (int) GetNumParts())) {
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switch (ManageAttributes(partNum, GetString(attributeOperation, 2),
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GetString(attributeOperation, 3))) {
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case -1:
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saveData = 0;
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neverSaveData = 1;
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break;
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case 1:
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JustLooking(0);
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saveData = 1;
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break;
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default:
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break;
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} // switch
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} else {
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cerr << "Error: Invalid partition number " << partNum + 1 << "\n";
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saveData = 0;
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neverSaveData = 1;
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} // if/else reasonable partition #
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} // if (cmd != "list")
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break;
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} // case 'A':
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case 'a':
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SetAlignment(alignment);
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break;
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case 'b':
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SaveGPTBackup(backupFile);
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free(backupFile);
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break;
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case 'c':
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cout << "Setting name!\n";
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JustLooking(0);
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partNum = (int) GetInt(partName, 1) - 1;
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if (partNum < 0)
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partNum = newPartNum;
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cout << "partNum is " << partNum << "\n";
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if ((partNum >= 0) && (partNum < (int) GetNumParts())) {
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name = GetString(partName, 2);
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if (SetName(partNum, (UnicodeString) name.c_str())) {
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saveData = 1;
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} else {
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cerr << "Unable to set partition " << partNum + 1
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<< "'s name to '" << GetString(partName, 2) << "'!\n";
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neverSaveData = 1;
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} // if/else
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free(partName);
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}
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break;
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case 'C':
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JustLooking(0);
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RecomputeCHS();
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saveData = 1;
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break;
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case 'd':
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JustLooking(0);
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if (DeletePartition(deletePartNum - 1) == 0) {
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cerr << "Error " << errno << " deleting partition!\n";
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neverSaveData = 1;
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} else saveData = 1;
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break;
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case 'D':
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cout << GetAlignment() << "\n";
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break;
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case 'e':
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JustLooking(0);
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MoveSecondHeaderToEnd();
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saveData = 1;
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break;
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case 'E':
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cout << FindLastInFree(FindFirstInLargest()) << "\n";
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break;
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case 'f':
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cout << FindFirstInLargest() << "\n";
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break;
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case 'F':
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temp = FindFirstInLargest();
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Align(&temp);
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cout << temp << "\n";
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break;
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case 'g':
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JustLooking(0);
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saveData = 1;
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saveNonGPT = 1;
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break;
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case 'G':
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JustLooking(0);
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saveData = 1;
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RandomizeGUIDs();
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break;
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case 'h':
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JustLooking(0);
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if (BuildMBR(hybrids, 1) == 1)
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saveData = 1;
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break;
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case 'i':
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ShowPartDetails(infoPartNum - 1);
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break;
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case 'j':
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if (MoveMainTable(mainTableLBA)) {
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JustLooking(0);
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saveData = 1;
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} else {
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neverSaveData = 1;
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} // if/else
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break;
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case 'l':
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LoadBackupFile(backupFile, saveData, neverSaveData);
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free(backupFile);
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break;
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case 'L':
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break;
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case 'm':
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JustLooking(0);
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if (BuildMBR(mbrParts, 0) == 1) {
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if (!pretend) {
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if (SaveMBR()) {
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DestroyGPT();
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} else
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cerr << "Problem saving MBR!\n";
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} // if
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saveNonGPT = 0;
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pretend = 1; // Not really, but works around problem if -g is used with this...
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saveData = 0;
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} // if
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break;
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case 'n':
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JustLooking(0);
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newPartNum = (int) GetInt(newPartInfo, 1) - 1;
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if (newPartNum < 0)
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newPartNum = FindFirstFreePart();
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low = FindFirstInLargest();
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Align(&low);
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high = FindLastInFree(low);
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startSector = IeeeToInt(GetString(newPartInfo, 2), sSize, low, high, low);
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endSector = IeeeToInt(GetString(newPartInfo, 3), sSize, startSector, high, high);
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if (CreatePartition(newPartNum, startSector, endSector)) {
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saveData = 1;
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} else {
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cerr << "Could not create partition " << newPartNum + 1 << " from "
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<< startSector << " to " << endSector << "\n";
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neverSaveData = 1;
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} // if/else
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free(newPartInfo);
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break;
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case 'N':
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JustLooking(0);
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startSector = FindFirstInLargest();
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Align(&startSector);
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endSector = FindLastInFree(startSector);
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if (largestPartNum <= 0)
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largestPartNum = FindFirstFreePart() + 1;
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if (CreatePartition(largestPartNum - 1, startSector, endSector)) {
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saveData = 1;
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} else {
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cerr << "Could not create partition " << largestPartNum << " from "
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<< startSector << " to " << endSector << "\n";
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neverSaveData = 1;
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} // if/else
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break;
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case 'o':
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JustLooking(0);
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ClearGPTData();
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saveData = 1;
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break;
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case 'O':
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DisplayMBRData();
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break;
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case 'p':
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DisplayGPTData();
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break;
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case 'P':
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pretend = 1;
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break;
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case 'r':
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JustLooking(0);
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uint64_t p1, p2;
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p1 = GetInt(twoParts, 1) - 1;
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p2 = GetInt(twoParts, 2) - 1;
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if (SwapPartitions((uint32_t) p1, (uint32_t) p2) == 0) {
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neverSaveData = 1;
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cerr << "Cannot swap partitions " << p1 + 1 << " and " << p2 + 1 << "\n";
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} else saveData = 1;
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break;
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case 'R':
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secondDevice = *this;
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secondDevice.SetDisk(outDevice);
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secondDevice.JustLooking(0);
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if (!secondDevice.SaveGPTData(1))
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retval = 8;
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break;
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case 's':
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JustLooking(0);
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SortGPT();
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saveData = 1;
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break;
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case 'S':
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JustLooking(0);
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if (SetGPTSize(tableSize) == 0)
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neverSaveData = 1;
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else
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saveData = 1;
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break;
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case 't':
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JustLooking(0);
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partNum = (int) GetInt(typeCode, 1) - 1;
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if (partNum < 0)
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partNum = newPartNum;
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if ((partNum >= 0) && (partNum < (int) GetNumParts())) {
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// Remember the original hex value requested
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string raw = GetString(typeCode, 2);
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if (raw.size() == 4) {
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typeRaw[partNum] = StrToHex(raw, 0);
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}
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typeHelper = GetString(typeCode, 2);
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if ((typeHelper != (GUIDData) "00000000-0000-0000-0000-000000000000") &&
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(ChangePartType(partNum, typeHelper))) {
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saveData = 1;
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} else {
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cerr << "Could not change partition " << partNum + 1
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<< "'s type code to " << GetString(typeCode, 2) << "!\n";
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neverSaveData = 1;
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} // if/else
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free(typeCode);
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}
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break;
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case 'T':
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JustLooking(0);
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XFormDisklabel(bsdPartNum - 1);
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saveData = 1;
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break;
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case 'u':
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JustLooking(0);
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saveData = 1;
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partNum = (int) GetInt(partGUID, 1) - 1;
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if (partNum < 0)
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partNum = newPartNum;
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if ((partNum >= 0) && (partNum < (int) GetNumParts())) {
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SetPartitionGUID(partNum, GetString(partGUID, 2).c_str());
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}
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break;
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case 'U':
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JustLooking(0);
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saveData = 1;
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SetDiskGUID(diskGUID);
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break;
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case 'v':
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Verify();
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break;
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case 'z':
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if (!pretend) {
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DestroyGPT();
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} // if
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saveNonGPT = 1;
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saveData = 0;
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break;
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case 'Z':
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if (!pretend) {
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DestroyGPT();
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DestroyMBR();
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} // if
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saveNonGPT = 1;
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saveData = 0;
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break;
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default:
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cerr << "Unknown option (-" << opt << ")!\n";
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break;
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} // switch
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} // while
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} else { // if loaded OK
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poptResetContext(poptCon);
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// Do a few types of operations even if there are problems....
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while ((opt = poptGetNextOpt(poptCon)) > 0) {
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switch (opt) {
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case 'l':
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LoadBackupFile(backupFile, saveData, neverSaveData);
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cout << "Information: Loading backup partition table; will override earlier problems!\n";
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free(backupFile);
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retval = 0;
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break;
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case 'o':
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JustLooking(0);
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ClearGPTData();
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saveData = 1;
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cout << "Information: Creating fresh partition table; will override earlier problems!\n";
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retval = 0;
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break;
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case 'v':
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cout << "Verification may miss some problems or report too many!\n";
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Verify();
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break;
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case 'z':
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if (!pretend) {
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DestroyGPT();
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} // if
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saveNonGPT = 1;
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saveData = 0;
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break;
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case 'Z':
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if (!pretend) {
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DestroyGPT();
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DestroyMBR();
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} // if
|
|
saveNonGPT = 1;
|
|
saveData = 0;
|
|
break;
|
|
} // switch
|
|
} // while
|
|
retval = 2;
|
|
} // if/else loaded OK
|
|
if ((saveData) && (!neverSaveData) && (saveNonGPT) && (!pretend)) {
|
|
if (!SaveGPTData(1))
|
|
retval = 4;
|
|
}
|
|
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;
|
|
int eeLast, mbrNum = 0;
|
|
MBRPart newPart;
|
|
BasicMBRData newMBR;
|
|
|
|
if (argument != NULL) {
|
|
numParts = CountColons(argument) + 1;
|
|
if (isHybrid) {
|
|
eeLast = GetString(argument, numParts) == "EE";
|
|
if (eeLast) {
|
|
numParts--;
|
|
}
|
|
}
|
|
|
|
if (numParts <= (4 - isHybrid)) {
|
|
newMBR.SetDisk(GetDisk());
|
|
for (i = 0; i < numParts; i++) {
|
|
origPartNum = GetInt(argument, i + 1) - 1;
|
|
if (IsUsedPartNum(origPartNum) && (partitions[origPartNum].IsSizedForMBR() == MBR_SIZED_GOOD)) {
|
|
mbrNum = i + (isHybrid && ! eeLast);
|
|
newPart.SetInclusion(PRIMARY);
|
|
newPart.SetLocation(operator[](origPartNum).GetFirstLBA(),
|
|
operator[](origPartNum).GetLengthLBA());
|
|
newPart.SetStatus(0);
|
|
newPart.SetType((uint8_t)(operator[](origPartNum).GetHexType() / 0x0100));
|
|
// If we were created with a specific hex type, use that instead
|
|
// of risking fidelity loss by doing a GUID-based lookup
|
|
if (typeRaw.count(origPartNum) == 1) {
|
|
newPart.SetType(typeRaw[origPartNum]);
|
|
}
|
|
newMBR.AddPart(mbrNum, newPart);
|
|
} else {
|
|
cerr << "Original partition " << origPartNum + 1 << " does not exist or is too big! Aborting operation!\n";
|
|
allOK = 0;
|
|
} // if/else
|
|
} // for
|
|
if (isHybrid) {
|
|
if (eeLast) {
|
|
mbrNum = i;
|
|
} else {
|
|
mbrNum = 0;
|
|
}
|
|
newPart.SetInclusion(PRIMARY);
|
|
newPart.SetLocation(1, newMBR.FindLastInFree(1));
|
|
newPart.SetStatus(0);
|
|
newPart.SetType(0xEE);
|
|
newMBR.AddPart(mbrNum, newPart);
|
|
} // if
|
|
if (allOK)
|
|
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()
|