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575 lines
24 KiB
575 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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|
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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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|
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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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|
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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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|
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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; |
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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", "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...]"}, |
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{"info", 'i', POPT_ARG_INT, &infoPartNum, 'i', "show detailed information on partition", "partnum"}, |
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{"skip-sync", 'j', POPT_ARG_NONE, NULL, 'j', "Don't atempt to sync and update the parittion table", ""}, |
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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", '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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cout << "REALLY setting name!\n"; |
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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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TurnOffSyncing(); |
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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(); |
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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 '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 = 0; |
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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 = 0; |
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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 = 0; |
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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 = 0; |
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saveData = 0; |
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break; |
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} // switch |
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} // while |
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retval = 2; |
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} // if/else loaded OK |
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if ((saveData) && (!neverSaveData) && (saveNonGPT) && (!pretend)) { |
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SaveGPTData(1); |
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} |
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if (saveData && (!saveNonGPT)) { |
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cout << "Non-GPT disk; not saving changes. Use -g to override.\n"; |
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retval = 3; |
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} // if |
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if (neverSaveData) { |
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cerr << "Error encountered; not saving changes.\n"; |
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retval = 4; |
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} // if |
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} // if (device != NULL) |
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poptFreeContext(poptCon); |
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return retval; |
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} // GPTDataCL::DoOptions() |
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|
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// Create a hybrid or regular MBR from GPT data structures |
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int GPTDataCL::BuildMBR(char* argument, int isHybrid) { |
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int numParts, allOK = 1, i, origPartNum; |
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MBRPart newPart; |
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BasicMBRData newMBR; |
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|
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if (argument != NULL) { |
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numParts = CountColons(argument) + 1; |
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if (numParts <= (4 - isHybrid)) { |
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newMBR.SetDisk(GetDisk()); |
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for (i = 0; i < numParts; i++) { |
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origPartNum = GetInt(argument, i + 1) - 1; |
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if (IsUsedPartNum(origPartNum) && (partitions[origPartNum].IsSizedForMBR() == MBR_SIZED_GOOD)) { |
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newPart.SetInclusion(PRIMARY); |
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newPart.SetLocation(operator[](origPartNum).GetFirstLBA(), |
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operator[](origPartNum).GetLengthLBA()); |
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newPart.SetStatus(0); |
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newPart.SetType((uint8_t)(operator[](origPartNum).GetHexType() / 0x0100)); |
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// If we were created with a specific hex type, use that instead |
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// of risking fidelity loss by doing a GUID-based lookup |
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if (typeRaw.count(origPartNum) == 1) { |
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newPart.SetType(typeRaw[origPartNum]); |
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} |
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newMBR.AddPart(i + isHybrid, newPart); |
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} else { |
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cerr << "Original partition " << origPartNum + 1 << " does not exist or is too big! Aborting operation!\n"; |
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allOK = 0; |
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} // if/else |
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} // for |
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if (isHybrid) { |
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newPart.SetInclusion(PRIMARY); |
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newPart.SetLocation(1, newMBR.FindLastInFree(1)); |
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newPart.SetStatus(0); |
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newPart.SetType(0xEE); |
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newMBR.AddPart(0, newPart); |
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} // if |
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if (allOK) |
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SetProtectiveMBR(newMBR); |
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} else allOK = 0; |
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} else allOK = 0; |
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if (!allOK) |
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cerr << "Problem creating MBR!\n"; |
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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()
|
|
|