1 /* 2 * Copyright 2020 Suhel Mehta, mehtasuhel@gmail.com 3 * Copyright 2008-2010, Axel Dörfler, axeld@pinc-software.de. 4 * All rights reserved. Distributed under the terms of the MIT License. 5 */ 6 7 #ifndef INODE_H 8 #define INODE_H 9 10 #include "ufs2.h" 11 #include "Volume.h" 12 13 #define UFS2_ROOT ((ino_t)2) 14 15 16 struct timeval32 17 { 18 int tv_sec, tv_usec; 19 }; 20 21 22 struct ufs2_inode { 23 u_int16_t fileMode; 24 int16_t linkCount; 25 int32_t userId; 26 int32_t groupId; 27 int32_t inodeBlockSize; 28 int64_t size; 29 int64_t byteHeld; 30 struct timeval32 accessTime; 31 struct timeval32 modifiedTime; 32 struct timeval32 changeTime; 33 struct timeval32 createTime; 34 /* time in nano seconds */ 35 int32_t nsModifiedTime; 36 int32_t nsAccessTime; 37 int32_t nsChangeTime; 38 int32_t nsCreateTime; 39 int32_t generationNumber; 40 int32_t kernelFlags; 41 int32_t statusFlags; 42 int32_t extendedAttSize; /* Extended attribute size */ 43 /* 2 Direct extended attribute block pointers */ 44 int64_t extendedBklPtr1; 45 int64_t extendedBklPtr2; 46 47 union { 48 struct { 49 int64_t directBlockPointer[12]; 50 int64_t indirectBlockPointer; 51 int64_t doubleIndriectBlockPointer; 52 int64_t tripleIndriectBlockPointer; 53 }; 54 char symlinkpath[120]; 55 }; 56 /* Unused but need to figure out what are they */ 57 int64_t unused1; 58 int64_t unused2; 59 int64_t unused3; 60 61 62 static void _DecodeTime(struct timespec& timespec, timeval32 time) 63 { 64 timespec.tv_sec = time.tv_sec; 65 timespec.tv_nsec = time.tv_usec * 1000; 66 } 67 void GetAccessTime(struct timespec& timespec) const 68 { _DecodeTime(timespec, accessTime); } 69 void GetChangeTime(struct timespec& timespec) const 70 { _DecodeTime(timespec, changeTime); } 71 void GetModificationTime(struct timespec& timespec) const 72 { _DecodeTime(timespec, modifiedTime); } 73 void GetCreationTime(struct timespec& timespec) const 74 { _DecodeTime(timespec, createTime); } 75 }; 76 77 class Inode { 78 public: 79 Inode(Volume* volume, ino_t id); 80 Inode(Volume* volume, ino_t id, 81 const ufs2_inode& item); 82 ~Inode(); 83 84 status_t InitCheck(); 85 86 ino_t ID() const { return fID; } 87 // 88 rw_lock* Lock() { return& fLock; } 89 // 90 // status_t UpdateNodeFromDisk(); 91 92 bool IsDirectory() const 93 { return S_ISDIR(Mode()); } 94 bool IsFile() const 95 { return S_ISREG(Mode()); } 96 bool IsSymLink() const 97 { return S_ISLNK(Mode()); } 98 // status_t CheckPermissions(int accessMode) const; 99 100 mode_t Mode() const { return fNode.fileMode; } 101 off_t Size() const { return fNode.size; } 102 uid_t UserID() const { return fNode.userId; } 103 gid_t GroupID() const { return fNode.groupId; } 104 void GetChangeTime(struct timespec& timespec) const 105 { fNode.GetChangeTime(timespec); } 106 void GetModificationTime(struct timespec& timespec) const 107 { fNode.GetModificationTime(timespec); } 108 void GetCreationTime(struct timespec& timespec) const 109 { fNode.GetCreationTime(timespec); } 110 void GetAccessTime(struct timespec& timespec) const 111 { fNode.GetAccessTime(timespec); } 112 113 Volume* GetVolume() const { return fVolume; } 114 115 ino_t Parent(); 116 117 off_t FindBlock(off_t block_number, off_t block_offset); 118 status_t ReadAt(off_t pos, uint8* buffer, size_t* length); 119 status_t ReadLink(char* buffer, size_t *_bufferSize); 120 // status_t FillGapWithZeros(off_t start, off_t end); 121 122 void* FileCache() const { return fCache; } 123 void* Map() const { return fMap; } 124 125 // status_t FindParent(ino_t* id); 126 //static Inode* Create(Transaction& transaction, ino_t id, Inode* parent, int32 mode, uint64 size = 0, uint64 flags = 0); 127 private: 128 Inode(Volume* volume); 129 Inode(const Inode&); 130 Inode& operator=(const Inode&); 131 int64_t GetBlockPointer(int ptrNumber) { 132 return fNode.directBlockPointer[ptrNumber]; } 133 134 int64_t GetIndirectBlockPointer() { 135 return fNode.indirectBlockPointer; } 136 137 int64_t GetDoubleIndirectBlockPtr() { 138 return fNode.doubleIndriectBlockPointer; } 139 140 int64_t GetTripleIndirectBlockPtr() { 141 return fNode.tripleIndriectBlockPointer; } 142 143 // uint64 _NumBlocks(); 144 private: 145 146 rw_lock fLock; 147 ::Volume* fVolume; 148 ino_t fID; 149 void* fCache; 150 void* fMap; 151 status_t fInitStatus; 152 ufs2_inode fNode; 153 }; 154 155 #endif // INODE_H 156