Added new files
diff --git a/bsd.cc b/bsd.cc
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--- /dev/null
+++ b/bsd.cc
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+/* bsd.cc -- Functions for loading, saving, and manipulating legacy BSD disklabel
+ data. */
+
+/* By Rod Smith, August, 2009 */
+
+/* This program is copyright (c) 2009 by Roderick W. Smith. It is distributed
+ under the terms of the GNU GPL version 2, as detailed in the COPYING file. */
+
+#define __STDC_LIMIT_MACROS
+#define __STDC_CONSTANT_MACROS
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <string.h>
+//#include <time.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include "crc32.h"
+#include "support.h"
+#include "bsd.h"
+
+using namespace std;
+
+
+BSDData::BSDData(void) {
+ state = unknown;
+ signature = UINT32_C(0);
+ signature2 = UINT32_C(0);
+ sectorSize = 512;
+ numParts = 0;
+ labelFirstLBA = 0;
+ labelLastLBA = 0;
+ labelStart = LABEL_OFFSET1; // assume raw disk format
+// deviceFilename[0] = '\0';
+ partitions = NULL;
+} // default constructor
+
+BSDData::~BSDData(void) {
+ free(partitions);
+} // destructor
+
+int BSDData::ReadBSDData(char* device, uint64_t startSector, uint64_t endSector) {
+ int fd, allOK = 1;
+
+ if ((fd = open(device, O_RDONLY)) != -1) {
+ ReadBSDData(fd, startSector, endSector);
+ } else {
+ allOK = 0;
+ } // if
+
+ close(fd);
+
+// if (allOK)
+// strcpy(deviceFilename, device);
+
+ return allOK;
+} // BSDData::ReadBSDData() (device filename version)
+
+// Load the BSD disklabel data from an already-opened disk
+// file, starting with the specified sector number.
+void BSDData::ReadBSDData(int fd, uint64_t startSector, uint64_t endSector) {
+ uint8_t buffer[2048]; // I/O buffer
+ uint64_t startByte;
+ int i, err, foundSig = 0, bigEnd = 0;
+ int relative = 0; // assume absolute partition sector numbering
+ uint32_t realSig;
+ uint32_t* temp32;
+ uint16_t* temp16;
+ BSDRecord* tempRecords;
+
+ labelFirstLBA = startSector;
+ labelLastLBA = endSector;
+
+ // Read two sectors into memory; we'll extract data from
+ // this buffer. (Done to work around FreeBSD limitation)
+ lseek64(fd, startSector * 512, SEEK_SET);
+ err = read(fd, buffer, 2048);
+
+ // Do some strangeness to support big-endian architectures...
+ bigEnd = (IsLittleEndian() == 0);
+ realSig = BSD_SIGNATURE;
+ if (bigEnd)
+ ReverseBytes(&realSig, 4);
+
+ // Look for the signature at one of two locations
+ labelStart = LABEL_OFFSET1;
+ temp32 = (uint32_t*) &buffer[labelStart];
+ signature = *temp32;
+ if (signature == realSig) {
+ temp32 = (uint32_t*) &buffer[labelStart + 132];
+ signature2 = *temp32;
+ if (signature2 == realSig)
+ foundSig = 1;
+ } // if/else
+ if (!foundSig) { // look in second location
+ labelStart = LABEL_OFFSET2;
+ temp32 = (uint32_t*) &buffer[labelStart];
+ signature = *temp32;
+ if (signature == realSig) {
+ temp32 = (uint32_t*) &buffer[labelStart + 132];
+ signature2 = *temp32;
+ if (signature2 == realSig)
+ foundSig = 1;
+ } // if/else
+ } // if
+
+ // Load partition metadata from the buffer....
+ temp32 = (uint32_t*) &buffer[labelStart + 40];
+ sectorSize = *temp32;
+ temp16 = (uint16_t*) &buffer[labelStart + 138];
+ numParts = *temp16;
+
+ // Make it big-endian-aware....
+ if (IsLittleEndian() == 0)
+ ReverseMetaBytes();
+
+ // Check validity of the data and flag it appropriately....
+ if (foundSig && (numParts <= MAX_BSD_PARTS)) {
+ state = bsd;
+ } else {
+ state = bsd_invalid;
+ } // if/else
+
+ // If the state is good, go ahead and load the main partition data....
+ if (state == bsd) {
+ partitions = (struct BSDRecord*) malloc(numParts * sizeof (struct BSDRecord));
+ for (i = 0; i < numParts; i++) {
+ // Once again, we use the buffer, but index it using a BSDRecord
+ // pointer (dangerous, but effective)....
+ tempRecords = (BSDRecord*) &buffer[labelStart + 148];
+ partitions[i].lengthLBA = tempRecords[i].lengthLBA;
+ partitions[i].firstLBA = tempRecords[i].firstLBA;
+ partitions[i].fsType = tempRecords[i].fsType;
+ if (bigEnd) { // reverse data (fsType is a single byte)
+ ReverseBytes(&partitions[i].lengthLBA, 4);
+ ReverseBytes(&partitions[i].firstLBA, 4);
+ } // if big-endian
+ // Check for signs of relative sector numbering: A "0" first sector
+ // number on a partition with a non-zero length -- but ONLY if the
+ // length is less than the disk size, since NetBSD has a habit of
+ // creating a disk-sized partition within a carrier MBR partition
+ // that's too small to house it, and this throws off everything....
+ if ((partitions[i].firstLBA == 0) && (partitions[i].lengthLBA > 0)
+ && (partitions[i].lengthLBA < labelLastLBA))
+ relative = 1;
+ } // for
+ // Some disklabels use sector numbers relative to the enclosing partition's
+ // start, others use absolute sector numbers. If relative numbering was
+ // detected above, apply a correction to all partition start sectors....
+ if (relative) {
+ for (i = 0; i < numParts; i++) {
+ partitions[i].firstLBA += startSector;
+ } // for
+ } // if
+ } // if signatures OK
+// DisplayBSDData();
+} // BSDData::ReadBSDData(int fd, uint64_t startSector)
+
+// Reverse metadata's byte order; called only on big-endian systems
+void BSDData::ReverseMetaBytes(void) {
+ ReverseBytes(&signature, 4);
+ ReverseBytes(§orSize, 4);
+ ReverseBytes(&signature2, 4);
+ ReverseBytes(&numParts, 2);
+} // BSDData::ReverseMetaByteOrder()
+
+// Display basic BSD partition data. Used for debugging.
+void BSDData::DisplayBSDData(void) {
+ int i;
+
+ if (state == bsd) {
+ printf("BSD partitions:\n");
+ printf("Number\t Start (sector)\t Length (sectors)\tType\n");
+ for (i = 0; i < numParts; i++) {
+ printf("%4d\t%13lu\t%15lu \t0x%02X\n", i + 1,
+ (unsigned long) partitions[i].firstLBA,
+ (unsigned long) partitions[i].lengthLBA, partitions[i].fsType);
+ } // for
+ } // if
+} // BSDData::DisplayBSDData()
+
+// Displays the BSD disklabel state. Called during program launch to inform
+// the user about the partition table(s) status
+int BSDData::ShowState(void) {
+ int retval = 0;
+
+ switch (state) {
+ case bsd_invalid:
+ printf(" BSD: not present\n");
+ break;
+ case bsd:
+ printf(" BSD: present\n");
+ retval = 1;
+ break;
+ default:
+ printf("\a BSD: unknown -- bug!\n");
+ break;
+ } // switch
+ return retval;
+} // BSDData::ShowState()
+
+// Returns the BSD table's partition type code
+uint8_t BSDData::GetType(int i) {
+ uint8_t retval = 0; // 0 = "unused"
+
+ if ((i < numParts) && (i >= 0) && (state == bsd) && (partitions != 0))
+ retval = partitions[i].fsType;
+
+ return(retval);
+} // BSDData::GetType()
+
+// Returns the number of the first sector of the specified partition
+uint64_t BSDData::GetFirstSector(int i) {
+ uint64_t retval = UINT64_C(0);
+
+ if ((i < numParts) && (i >= 0) && (state == bsd) && (partitions != 0))
+ retval = (uint64_t) partitions[i].firstLBA;
+
+ return retval;
+} // BSDData::GetFirstSector
+
+// Returns the length (in sectors) of the specified partition
+uint64_t BSDData::GetLength(int i) {
+ uint64_t retval = UINT64_C(0);
+
+ if ((i < numParts) && (i >= 0) && (state == bsd) && (partitions != 0))
+ retval = (uint64_t) partitions[i].lengthLBA;
+
+ return retval;
+} // BSDData::GetLength()
+
+// Returns the number of partitions defined in the current table
+int BSDData::GetNumParts(void) {
+ return numParts;
+} // BSDData::GetNumParts()
+
+// Returns the specified partition as a GPT partition. Used in BSD-to-GPT
+// conversion process
+GPTPart BSDData::AsGPT(int i) {
+ GPTPart guid; // dump data in here, then return it
+ uint64_t sectorOne, sectorEnd; // first & last sectors of partition
+ char tempStr[NAME_SIZE]; // temporary string for holding GPT name
+ int passItOn = 1; // Set to 0 if partition is empty or invalid
+
+ guid.BlankPartition();
+ sectorOne = (uint64_t) partitions[i].firstLBA;
+ sectorEnd = sectorOne + (uint64_t) partitions[i].lengthLBA;
+ if (sectorEnd > 0) sectorEnd--;
+ // Note on above: BSD partitions sometimes have a length of 0 and a start
+ // sector of 0. With unsigned ints, the usual (start + length - 1) to
+ // find the end will result in a huge number, which will be confusing
+
+ // Do a few sanity checks on the partition before we pass it on....
+ // First, check that it falls within the bounds of its container
+ // and that it starts before it ends....
+ if ((sectorOne < labelFirstLBA) || (sectorEnd > labelLastLBA) || (sectorOne > sectorEnd))
+ passItOn = 0;
+ // Some disklabels include a pseudo-partition that's the size of the entire
+ // disk or containing partition. Don't return it.
+ if ((sectorOne <= labelFirstLBA) && (sectorEnd >= labelLastLBA) &&
+ (GetType(i) == 0))
+ passItOn = 0;
+ // If the end point is 0, it's not a valid partition.
+ if (sectorEnd == 0)
+ passItOn = 0;
+
+ if (passItOn) {
+ guid.SetFirstLBA(sectorOne);
+ guid.SetLastLBA(sectorEnd);
+ // Now set a random unique GUID for the partition....
+ guid.SetUniqueGUID(1);
+ // ... zero out the attributes and name fields....
+ guid.SetAttributes(UINT64_C(0));
+ // Most BSD disklabel type codes seem to be archaic or rare.
+ // They're also ambiguous; a FreeBSD filesystem is impossible
+ // to distinguish from a NetBSD one. Thus, these code assignment
+ // are going to be rough to begin with. For a list of meanings,
+ // see http://fxr.watson.org/fxr/source/sys/dtype.h?v=DFBSD,
+ // or Google it.
+ switch (GetType(i)) {
+ case 1: // BSD swap
+ guid.SetType(0xa502); break;
+ case 7: // BSD FFS
+ guid.SetType(0xa503); break;
+ case 8: case 11: // MS-DOS or HPFS
+ guid.SetType(0x0700); break;
+ case 9: // log-structured fs
+ guid.SetType(0xa903); break;
+ case 13: // bootstrap
+ guid.SetType(0xa501); break;
+ case 14: // vinum
+ guid.SetType(0xa505); break;
+ case 15: // RAID
+ guid.SetType(0xa903); break;
+ case 27: // FreeBSD ZFS
+ guid.SetType(0xa504); break;
+ default:
+ guid.SetType(0x0700); break;
+ } // switch
+ // Set the partition name to the name of the type code....
+ guid.SetName((unsigned char*) guid.GetNameType(tempStr));
+ } // if
+ return guid;
+} // BSDData::AsGPT()