1 #include "SparablePartition.h" 2 3 #define B_NOT_IMPLEMENTED B_ERROR 4 5 using namespace Udf; 6 7 /*! \brief Creates a new SparablePartition object. 8 */ 9 SparablePartition::SparablePartition(uint16 number, uint32 start, uint32 length, 10 uint16 packetLength, uint8 tableCount, 11 uint32 *tableLocations) 12 : fNumber(number) 13 , fStart(start) 14 , fLength(length) 15 , fPacketLength(packetLength) 16 , fTableCount(tableCount) 17 , fInitStatus(B_NO_INIT) 18 { 19 status_t error = (0 < TableCount() && TableCount() <= kMaxSparingTableCount) 20 ? B_OK : B_BAD_VALUE; 21 if (!error) { 22 for (uint8 i = 0; i < TableCount(); i++) 23 fTableLocations[i] = tableLocations[i]; 24 } 25 if (!error) 26 fInitStatus = B_OK; 27 } 28 29 /*! \brief Destroys the SparablePartition object. 30 */ 31 SparablePartition::~SparablePartition() 32 { 33 } 34 35 /*! \brief Maps the given logical block to a physical block on disc. 36 37 The sparing tables are first checked to see if the logical block has 38 been remapped from a defective location to a non-defective one. If 39 not, the given logical block is then simply treated as an offset from 40 the start of the physical partition. 41 */ 42 status_t 43 SparablePartition::MapBlock(uint32 logicalBlock, off_t &physicalBlock) 44 { 45 status_t error = InitCheck(); 46 if (!error) { 47 if (logicalBlock >= fLength) 48 error = B_BAD_ADDRESS; 49 else { 50 // Check for the logical block in the sparing tables. If not 51 // found, map directly to physical space. 52 53 //physicalBlock = fStart + logicalBlock; 54 //return B_OK; 55 error = B_ERROR; 56 } 57 } 58 return error; 59 } 60 61 /*! Returns the initialization status of the object. 62 */ 63 status_t 64 SparablePartition::InitCheck() 65 { 66 return fInitStatus; 67 } 68