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<a href="../../d2/d6e/fs_2ubixfsv2_2ubixfs_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*#ifndef UBIXFS_H</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">#define UBIXFS_H</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"></span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">#include <sys/types.h></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">#include <unistd.h></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">#include "fsAbstract.h"</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">#include "types.h"</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">#include "file.h"</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">#define INODE_IN_USE 0x00000001</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">#define INODE_DIRECTORY 0x00000002</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">#define ATTR_INODE 0x00000004</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">#define INODE_LOGGED 0x00000008</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">#define INODE_DELETED 0x00000010</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">#define PERMANENT_FLAGS 0x0000ffff</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">#define INODE_NO_CACHE 0x00010000</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">#define INODE_WAS_WRITTEN 0x00020000</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">#define NO_TRANSACTION 0x00040000</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"></span> </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">#define NUM_DIRECT_BLOCKS 64</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">#define MAX_FILENAME_LENGTH 256</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"></span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">#define UBIXFS_MAGIC1 0xA0A0A0A</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">#define UBIXFS_MAGIC2 0xB0B0B0B</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">#define UBIXFS_MAGIC3 0xC0C0C0C</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">#define UBIXFS_INODE_MAGIC 0x3bbe0ad9</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"></span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">*/</span><span class="comment">/* befs magic numbers</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">#define SUPER_BLOCK_MAGIC1 0x42465331 // BFS1</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">#define SUPER_BLOCK_MAGIC2 0xdd121031</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">#define SUPER_BLOCK_MAGIC3 0x15b6830e</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span><span class="comment">/*</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">#define UBIXFS_CLEAN 0x434C454E // CLEN</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">#define UBIXFS_DIRTY 0x44495254 // DIRT</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"></span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">typedef struct blockRun {</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> int AG __attribute__ ((packed));</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> unsigned short start __attribute__ ((packed));</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> unsigned short len __attribute__ ((packed));</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">} inodeAddr;</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">struct bNode;</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">struct ubixfsInode;</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">class bTree;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span> </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">typedef union uPtr {</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> inodeAddr iAddr;</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> bNode * bPtr;</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> bTree * btPtr;</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> ubixfsInode * iPtr;</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> void * vPtr;</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> off_t offset;</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">};</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">typedef struct diskSuperBlock {</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> char name[32] __attribute__ ((packed));</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> int32 magic1 __attribute__ ((packed));</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> int32 fsByteOrder __attribute__ ((packed));</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// blockSize on disk (4096 for UbixFS v2)</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> int32 blockSize __attribute__ ((packed));</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"></span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// number of bits needed to shift a block number to get a byte address</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> uInt32 blockShift __attribute__ ((packed));</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> off_t numBlocks __attribute__ ((packed));</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> off_t usedBlocks __attribute__ ((packed));</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// BlockAllocationTable</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> uInt32 batSectors __attribute__ ((packed));</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> uInt32 inodeCount __attribute__ ((packed));</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> uInt32 inodeSize __attribute__ ((packed));</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> uInt32 magic2 __attribute__ ((packed));</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> uInt32 blocksPerAG __attribute__ ((packed));</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> uInt32 AGShift __attribute__ ((packed));</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> uInt32 numAGs __attribute__ ((packed));</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> uInt32 lastUsedAG __attribute__ ((packed));</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// flags tells whether the FS is clean (0x434C454E) or dirty (0x44495954)</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> int32 flags __attribute__ ((packed));</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"></span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// journal information</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> blockRun logBlocks __attribute__ ((packed));</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> off_t logStart __attribute__ ((packed));</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> off_t logEnd __attribute__ ((packed));</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"></span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> int32 magic3 __attribute__ ((packed));</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"></span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// root dir of the SYS container</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> inodeAddr rootDir __attribute__ ((packed));</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"></span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// indicies</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> inodeAddr indicies __attribute__ ((packed));</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> char pad[368] __attribute__ ((packed));</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span> </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">} diskSuperBlock;</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"></span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment">typedef struct dataStream {</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> struct blockRun direct[NUM_DIRECT_BLOCKS] __attribute__ ((packed));</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> off_t maxDirectRange __attribute__ ((packed));</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> struct blockRun indirect __attribute__ ((packed));</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> off_t maxIndirectRange __attribute__ ((packed));</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> struct blockRun double_indirect __attribute__ ((packed));</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> off_t maxDoubleIndirectRange __attribute__ ((packed));</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> off_t size __attribute__ ((packed));</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment">} dataStream;</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"></span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">typedef struct ubixfsInode {</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> int32 magic1 __attribute__ ((packed));</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> inodeAddr inodeNum __attribute__ ((packed));</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> char name[MAX_FILENAME_LENGTH] __attribute__ ((packed));</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> uid_t uid __attribute__ ((packed));</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> gid_t gid __attribute__ ((packed));</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> int32 mode __attribute__ ((packed));</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> int32 flags __attribute__ ((packed));</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> // uInt64 createTime __attribute__ ((packed));</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> // uInt64 lastModifiedTime __attribute__ (packed));</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> inodeAddr attributes __attribute__ ((packed));</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> uInt32 type __attribute__ ((packed));</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> uInt32 inodeSize __attribute__ ((packed));</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> uPtr parent __attribute__ ((packed));</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> uPtr next __attribute__ ((packed));</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> uPtr prev __attribute__ ((packed));</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> uPtr data __attribute__ ((packed));</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> dataStream blocks __attribute__ ((packed));</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> uInt32 refCount __attribute__ ((packed));</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> char smallData[3200] __attribute__ ((packed));</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">} ubixfsInode;</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"></span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">class UbixFS : public vfs_abstract {</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> protected:</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> signed char * freeBlockList;</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> diskSuperBlock * superBlock;</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> fileDescriptor * root;</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"></span> </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> blockRun getFreeBlock(blockRun);</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> blockRun getFreeBlock(uInt32);</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> blockRun getFreeBlock(void);</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> blockRun get8FreeBlocks(uInt32);</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> uInt32 getNextAG(void);</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> void * mknod(const char *, ubixfsInode *, mode_t);</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> void printSuperBlock(void);</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> void printFreeBlockList(uInt32);</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> void setFreeBlock(blockRun);</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> public:</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> UbixFS(void);</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> UbixFS(device_t *);</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> virtual int vfs_init(void);</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> virtual int vfs_format(device_t *);</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> virtual void * vfs_mknod(const char *, mode_t);</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> virtual int vfs_mkdir(const char *, mode_t);</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> virtual int vfs_open(const char *, fileDescriptor *, int, ...);</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> virtual size_t vfs_read(fileDescriptor *, void *, off_t, size_t);</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> virtual size_t vfs_write(fileDescriptor *, void *, off_t, size_t);</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> virtual int vfs_sync(void);</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> virtual int vfs_stop(void); </span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> virtual ~UbixFS(void); </span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> friend class bTree;</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment">}; // UbixFS</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"></span> </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment">#endif // !UBIXFS_H</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment">*/</span></div>
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