3 * FAT12/16/32 Driver Version (Incl LFN)
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15 # define DEBUGS(v...) Log(v)
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17 # define DEBUGS(v...)
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26 #define CACHE_FAT 1 //!< Caches the FAT in memory
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27 #define USE_LFN 1 //!< Enables the use of Long File Names
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31 typedef struct s_lfncache {
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35 struct s_lfncache *Next;
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39 // === PROTOTYPES ===
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40 int FAT_Install(char **Arguments);
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41 tVFS_Node *FAT_InitDevice(char *device, char *options);
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42 void FAT_CloseDevice(tVFS_Node *node);
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43 Uint64 FAT_Read(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer);
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44 Uint64 FAT_Write(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer);
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45 char *FAT_ReadDir(tVFS_Node *dirNode, int dirpos);
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46 tVFS_Node *FAT_FindDir(tVFS_Node *dirNode, char *file);
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47 int FAT_Mknod(tVFS_Node *Node, char *Name, Uint Flags);
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48 int FAT_Relink(tVFS_Node *node, char *OldName, char *NewName);
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49 void FAT_CloseFile(tVFS_Node *node);
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51 // === SEMI-GLOBALS ===
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52 MODULE_DEFINE(0, 0x5B /*v0.90*/, FAT32, FAT_Install, NULL);
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53 tFAT_VolInfo gFAT_Disks[8];
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54 int giFAT_PartCount = 0;
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56 Uint32 *fat_cache[8];
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59 t_lfncache *fat_lfncache;
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61 tVFS_Driver gFAT_FSInfo = {
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62 "fat", 0, FAT_InitDevice, NULL
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67 * \fn int FAT_Install(char **Arguments)
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70 int FAT_Install(char **Arguments)
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72 VFS_AddDriver( &gFAT_FSInfo );
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76 /* Reads the boot sector of a disk and prepares the structures for it
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78 tVFS_Node *FAT_InitDevice(char *Device, char *options)
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82 Uint32 FATSz, RootDirSectors, TotSec, CountofClusters;
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83 tVFS_Node *node = NULL;
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84 tFAT_VolInfo *diskInfo = &gFAT_Disks[giFAT_PartCount];
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87 bs = &diskInfo->bootsect;
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89 //Open device and read boot sector
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90 diskInfo->fileHandle = VFS_Open(Device, VFS_OPENFLAG_READ|VFS_OPENFLAG_WRITE);
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91 if(diskInfo->fileHandle == -1) {
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92 Warning("FAT_InitDisk - Unable to open device '%s'", Device);
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96 VFS_ReadAt(diskInfo->fileHandle, 0, 512, bs);
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98 if(bs->bps == 0 || bs->spc == 0) {
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99 Warning("FAT_InitDisk - Error in FAT Boot Sector\n");
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103 //FAT Type Determining
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104 // From Microsoft FAT Specifcation
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105 RootDirSectors = ((bs->files_in_root*32) + (bs->bps - 1)) / bs->bps;
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107 if(bs->fatSz16 != 0) FATSz = bs->fatSz16;
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108 else FATSz = bs->spec.fat32.fatSz32;
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110 if(bs->totalSect16 != 0) TotSec = bs->totalSect16;
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111 else TotSec = bs->totalSect32;
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113 CountofClusters = (TotSec - (bs->resvSectCount + (bs->fatCount * FATSz) + RootDirSectors)) / bs->spc;
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115 if(CountofClusters < 4085)
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116 diskInfo->type = FAT12;
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117 else if(CountofClusters < 65525)
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118 diskInfo->type = FAT16;
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120 diskInfo->type = FAT32;
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124 char *sFatType, *sSize;
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125 Uint iSize = CountofClusters * bs->spc / 2;
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127 switch(diskInfo->type)
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129 case FAT12: sFatType = "FAT12"; break;
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130 case FAT16: sFatType = "FAT16"; break;
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131 case FAT32: sFatType = "FAT32"; break;
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133 if(iSize <= 2*1024) {
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136 else if(iSize <= 2*1024*1024) {
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144 Log("[FAT ] '%s' %s, %i %s", Device, sFatType, iSize, sSize);
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150 if(diskInfo->type == FAT32) {
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152 diskInfo->name[i] = (bs->spec.fat32.label[i] == ' ' ? '\0' : bs->spec.fat32.label[i]);
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156 diskInfo->name[i] = (bs->spec.fat16.label[i] == ' ' ? '\0' : bs->spec.fat16.label[i]);
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158 diskInfo->name[11] = '\0';
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159 //puts(diskInfo->name); putch('\n');
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161 //Compute Root directory offset
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162 if(diskInfo->type == FAT32)
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163 diskInfo->rootOffset = bs->spec.fat32.rootClust;
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165 diskInfo->rootOffset = (FATSz * bs->fatCount) / bs->spc;
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167 diskInfo->clusterCount = CountofClusters;
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169 diskInfo->firstDataSect = bs->resvSectCount + (bs->fatCount * FATSz) + RootDirSectors;
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171 //Allow for Caching the FAT
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175 fat_cache[ giFAT_PartCount ] = (Uint32*)malloc(sizeof(Uint32)*CountofClusters);
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176 if(fat_cache[giFAT_PartCount] == NULL) {
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177 Warning("FAT_InitDisk - Heap Exhausted\n");
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180 Ofs = bs->resvSectCount*512;
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181 if(diskInfo->type == FAT12) {
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185 for(i=0;i<CountofClusters/2;i++) {
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186 j = i & 511; //%512
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188 VFS_ReadAt(diskInfo->fileHandle, Ofs, 3*512, buf);
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191 val = *((int*)(buf+j*3));
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192 fat_cache[giFAT_PartCount][i*2] = val & 0xFFF;
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193 fat_cache[giFAT_PartCount][i*2+1] = (val>>12) & 0xFFF;
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196 if(diskInfo->type == FAT16) {
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198 for(i=0;i<CountofClusters;i++) {
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199 if( (i & 255) == 0 ) {
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200 VFS_ReadAt(diskInfo->fileHandle, Ofs, 512, buf);
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203 fat_cache[giFAT_PartCount][i] = buf[i&255];
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206 if(diskInfo->type == FAT32) {
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208 for(i=0;i<CountofClusters;i++) {
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209 if( (i & 127) == 0 ) {
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210 VFS_ReadAt(diskInfo->fileHandle, Ofs, 512, buf);
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213 fat_cache[giFAT_PartCount][i] = buf[i&127];
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216 DEBUGS(" FAT_InitDisk: FAT Fully Cached\n");
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218 #endif /*CACHE_FAT*/
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220 //Initalise inode cache for FAT
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221 gFAT_Disks[giFAT_PartCount].inodeHandle = Inode_GetHandle();
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224 Log(" FAT_InitDisk: Inode Cache handle is %i\n", gFAT_Disks[giFAT_PartCount].inodeHandle);
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228 node = &gFAT_Disks[giFAT_PartCount].rootNode;
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229 //node->Name = gFAT_Disks[giFAT_PartCount].name;
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230 node->Inode = diskInfo->rootOffset;
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231 node->Size = bs->files_in_root; //Unknown - To be set on readdir
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232 node->ImplInt = giFAT_PartCount;
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234 node->ReferenceCount = 1;
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236 node->UID = 0; node->GID= 0;
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238 node->ACLs = &gVFS_ACL_EveryoneRWX;
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239 node->Flags = VFS_FFLAG_DIRECTORY;
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240 node->CTime = node->MTime = node->ATime = now();
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242 node->Read = node->Write = NULL;
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243 node->ReadDir = FAT_ReadDir;
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244 node->FindDir = FAT_FindDir;
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245 node->Relink = FAT_Relink;
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246 node->MkNod = FAT_Mknod;
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247 node->Close = FAT_CloseDevice;
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249 giFAT_PartCount ++;
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254 * \fn void FAT_CloseDevice(tVFS_Node *node)
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255 * \brief Closes a mount and marks it as free
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257 void FAT_CloseDevice(tVFS_Node *node)
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259 node->ReferenceCount --;
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261 if(node->ReferenceCount > 0) return;
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263 // Close Disk Handle
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264 VFS_Close( gFAT_Disks[node->ImplInt].fileHandle );
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265 Inode_ClearCache(gFAT_Disks[node->ImplInt].inodeHandle);
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266 gFAT_Disks[node->ImplInt].fileHandle = -2;
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271 * \fn static Uint32 FAT_int_GetFatValue(int handle, Uint32 cluster)
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272 * \brief Fetches a value from the FAT
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274 static Uint32 FAT_int_GetFatValue(int handle, Uint32 cluster)
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277 ENTER("iHandle xCluster", handle, cluster);
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279 val = fat_cache[handle][cluster];
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281 if(gFAT_Disks[handle].type == FAT12) {
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282 VFS_ReadAt(gFAT_Disks[handle].fileHandle, 512+(cluster&~1)*3, 3, &val);
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283 val = (cluster&1 ? val&0xFFF : val>>12);
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284 } else if(gFAT_Disks[handle].type == FAT16) {
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285 VFS_ReadAt(gFAT_Disks[handle].fileHandle, 512+cluster*2, 2, &val);
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287 VFS_ReadAt(gFAT_Disks[handle].fileHandle, 512+cluster*4, 4, &val);
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289 #endif /*CACHE_FAT*/
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294 /* Reads a cluster's data
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296 static void FAT_int_ReadCluster(int Handle, Uint32 Cluster, int Length, void *Buffer)
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299 ENTER("iHandle xCluster iLength pBuffer", Handle, Cluster, Length, Buffer);
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302 gFAT_Disks[Handle].fileHandle,
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303 (gFAT_Disks[Handle].firstDataSect + (Cluster-2)*gFAT_Disks[Handle].bootsect.spc )
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304 * gFAT_Disks[Handle].bootsect.bps,
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314 * \fn Uint64 FAT_Read(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer)
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315 * \brief Reads data from a specified file
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317 Uint64 FAT_Read(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer)
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319 int preSkip, count;
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320 int handle = node->ImplInt;
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321 int i, cluster, pos;
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325 tFAT_VolInfo *disk = &gFAT_Disks[node->ImplInt];
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327 ENTER("Xoffset Xlength pbuffer", offset, length, buffer);
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329 // Calculate and Allocate Bytes Per Cluster
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330 bpc = disk->bootsect.spc * disk->bootsect.bps;
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331 tmpBuf = (void*) malloc(bpc);
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332 LOG("malloc'd %i bytes", bpc);
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334 // Cluster is stored in Inode Field
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335 cluster = node->Inode;
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338 if (disk->type == FAT12) eocMarker = EOC_FAT12;
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339 else if(disk->type == FAT16) eocMarker = EOC_FAT16;
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340 else if(disk->type == FAT32) eocMarker = EOC_FAT32;
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342 Log("ERROR: Unsupported FAT Variant.\n");
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348 // Single Cluster including offset
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349 if(length + offset < bpc)
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351 FAT_int_ReadCluster(handle, cluster, bpc, tmpBuf);
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352 memcpy( buffer, (void*)( tmpBuf + offset%bpc ), length );
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358 preSkip = offset / bpc;
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360 //Skip previous clusters
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361 for(i=preSkip;i--;) {
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362 cluster = FAT_int_GetFatValue(handle, cluster);
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363 if(cluster == eocMarker) {
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364 Warning("FAT_Read - Offset is past end of cluster chain mark");
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368 // Get Count of Clusters to read
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369 count = ((offset%bpc+length) / bpc) + 1;
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371 // Get buffer Position after 1st cluster
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372 pos = bpc - offset%bpc;
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374 // Read 1st Cluster
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375 FAT_int_ReadCluster(handle, cluster, bpc, tmpBuf);
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378 (void*)( tmpBuf + (bpc-pos) ),
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379 (pos < length ? pos : length)
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388 cluster = FAT_int_GetFatValue(handle, cluster);
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391 LOG("pos=%i\n", pos);
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392 LOG("Reading the rest of the clusters\n");
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396 //Read the rest of the cluster data
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397 for( i = 1; i < count-1; i++ )
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399 FAT_int_ReadCluster(handle, cluster, bpc, tmpBuf);
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400 memcpy((void*)(buffer+pos), tmpBuf, bpc);
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402 cluster = FAT_int_GetFatValue(handle, cluster);
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403 if(cluster == eocMarker) {
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404 Warning("FAT_Read - Read past End of Cluster Chain");
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411 FAT_int_ReadCluster(handle, cluster, bpc, tmpBuf);
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412 memcpy((void*)(buffer+pos), tmpBuf, length-pos);
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415 LOG("Free tmpBuf(0x%x) and Return\n", tmpBuf);
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419 LEAVE('X', length);
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424 * \fn Uint64 FAT_Write(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer)
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426 Uint64 FAT_Write(tVFS_Node *node, Uint64 offset, Uint64 length, void *buffer)
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432 * \fn static void FAT_int_ProperFilename(char *dest, char *src)
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433 * \brief Converts a FAT directory entry name into a proper filename
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435 static void FAT_int_ProperFilename(char *dest, char *src)
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439 for( a = 0; a < 8; a++) {
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440 if(src[a] == ' ') break;
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447 for( ; a < 11; a++, b++) {
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448 if(src[a] == ' ') break;
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453 //Log("FAT_int_ProperFilename: dest='%s'", dest);
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458 * \fn char *FAT_int_CreateName(tVFS_Node *parent, fat_filetable *ft, char *LongFileName)
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459 * \brief Converts either a LFN or a 8.3 Name into a proper name
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461 char *FAT_int_CreateName(tVFS_Node *parent, fat_filetable *ft, char *LongFileName)
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466 if(LongFileName && LongFileName[0] != '\0')
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468 len = strlen(LongFileName);
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469 ret = malloc(len+1);
\r
470 strcpy(ret, LongFileName);
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475 ret = (char*) malloc(13);
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476 memset(ret, 13, '\0');
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477 FAT_int_ProperFilename(ret, ft->name);
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485 * \fn tVFS_Node *FAT_int_CreateNode(tVFS_Node *parent, fat_filetable *ft, char *LongFileName)
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486 * \brief Creates a tVFS_Node structure for a given file entry
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488 tVFS_Node *FAT_int_CreateNode(tVFS_Node *parent, fat_filetable *ft, char *LongFileName)
\r
490 tVFS_Node node = {0};
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493 ENTER("pParent pFT sLongFileName", parent, ft, LongFileName);
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496 //node.Name = FAT_int_CreateName(parent, ft, LongFileName);
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498 node.Inode = ft->cluster | (ft->clusterHi<<16);
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499 node.Size = ft->size;
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500 node.ImplInt = parent->ImplInt;
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501 node.UID = 0; node.GID = 0;
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503 node.ACLs = &gVFS_ACL_EveryoneRWX; // RWXRWXRWX
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506 if(ft->attrib & ATTR_DIRECTORY) node.Flags |= VFS_FFLAG_DIRECTORY;
\r
507 if(ft->attrib & ATTR_READONLY) node.Flags |= VFS_FFLAG_READONLY;
\r
509 node.ATime = timestamp(0,0,0,
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510 ((ft->adate&0x1F)-1), //Days
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511 ((ft->adate&0x1E0)-1), //Months
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512 1980+((ft->adate&0xFF00)>>8)); //Years
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514 node.CTime = ft->ctimems * 10; //Miliseconds
\r
515 node.CTime += timestamp(
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516 (ft->ctime&0x1F)<<1, //Seconds
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517 ((ft->ctime&0x3F0)>>5), //Minutes
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518 ((ft->ctime&0xF800)>>11), //Hours
\r
519 ((ft->cdate&0x1F)-1), //Days
\r
520 ((ft->cdate&0x1E0)-1), //Months
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521 1980+((ft->cdate&0xFF00)>>8)); //Years
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523 node.MTime = timestamp(
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524 (ft->mtime&0x1F)<<1, //Seconds
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525 ((ft->mtime&0x3F0)>>5), //Minuites
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526 ((ft->mtime&0xF800)>>11), //Hours
\r
527 ((ft->mdate&0x1F)-1), //Days
\r
528 ((ft->mdate&0x1E0)-1), //Months
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529 1980+((ft->mdate&0xFF00)>>8)); //Years
\r
531 if(node.Flags & VFS_FFLAG_DIRECTORY) {
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532 node.ReadDir = FAT_ReadDir;
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533 node.FindDir = FAT_FindDir;
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534 node.MkNod = FAT_Mknod;
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536 node.Read = FAT_Read;
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537 node.Write = FAT_Write;
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539 node.Close = FAT_CloseFile;
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540 node.Relink = FAT_Relink;
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542 ret = Inode_CacheNode(gFAT_Disks[parent->ImplInt].inodeHandle, &node);
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549 \fn char *FAT_int_GetLFN(tVFS_Node *node)
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550 \brief Return pointer to LFN cache entry
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552 char *FAT_int_GetLFN(tVFS_Node *node)
\r
555 tmp = fat_lfncache;
\r
558 if(tmp->Inode == node->Inode && tmp->Impl == node->ImplInt)
\r
562 tmp = malloc(sizeof(t_lfncache));
\r
563 tmp->Inode = node->Inode;
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564 tmp->Impl = node->ImplInt;
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565 memset(tmp->Name, 0, 256);
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567 tmp->Next = fat_lfncache;
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568 fat_lfncache = tmp;
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574 \fn void FAT_int_DelLFN(tVFS_Node *node)
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575 \brief Delete a LFN cache entry
\r
577 void FAT_int_DelLFN(tVFS_Node *node)
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581 if(!fat_lfncache) return;
\r
583 if(!fat_lfncache->Next)
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585 tmp = fat_lfncache;
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586 fat_lfncache = tmp->Next;
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590 tmp = fat_lfncache;
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591 while(tmp && tmp->Next)
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593 if(tmp->Inode == node->Inode && tmp->Impl == node->ImplInt)
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596 tmp->Next = tmp->Next->Next;
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605 \fn char *FAT_ReadDir(tVFS_Node *dirNode, int dirPos)
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606 \param dirNode Node structure of directory
\r
607 \param dirPos Directory position
\r
609 char *FAT_ReadDir(tVFS_Node *dirNode, int dirpos)
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611 fat_filetable fileinfo[16]; //Sizeof=32, 16 per sector
\r
613 tFAT_VolInfo *disk = &gFAT_Disks[dirNode->ImplInt&7];
\r
614 Uint32 cluster, offset;
\r
621 ENTER("pDirNode iDirPos", dirNode, dirpos);
\r
623 // Get Byte Offset and skip
\r
624 offset = dirpos * sizeof(fat_filetable);
\r
625 preSkip = (offset >> 9) / disk->bootsect.spc; // >>9 == /512
\r
626 cluster = dirNode->Inode; // Cluster ID
\r
629 // - Pre FAT32 had a reserved area for the root.
\r
630 if( !(disk->type != FAT32 && cluster == disk->rootOffset) )
\r
632 //Skip previous clusters
\r
633 for(a=preSkip;a--;) {
\r
634 cluster = FAT_int_GetFatValue(dirNode->ImplInt, cluster);
\r
638 // Check for end of cluster chain
\r
639 if((disk->type == FAT12 && cluster == EOC_FAT12)
\r
640 || (disk->type == FAT16 && cluster == EOC_FAT16)
\r
641 || (disk->type == FAT32 && cluster == EOC_FAT32))
\r
644 // Bounds Checking (Used to spot heap overflows)
\r
645 if(cluster > disk->clusterCount + 2)
\r
647 Warning("FAT_ReadDir - Cluster ID is over cluster count (0x%x>0x%x)",
\r
648 cluster, disk->clusterCount+2);
\r
653 LOG("cluster=0x%x, dirpos=%i\n", cluster, dirpos);
\r
656 // - Pre FAT32 cluster base (in sectors)
\r
657 if( cluster == disk->rootOffset && disk->type != FAT32 )
\r
658 offset = disk->bootsect.resvSectCount + cluster*disk->bootsect.spc;
\r
660 { // FAT32 cluster base (in sectors)
\r
661 offset = disk->firstDataSect;
\r
662 offset += (cluster - 2) * disk->bootsect.spc;
\r
664 // Sector in cluster
\r
665 if(disk->bootsect.spc == 1)
\r
666 offset += (dirpos / 16);
\r
668 offset += (dirpos / 16) % disk->bootsect.spc;
\r
669 // Offset in sector
\r
672 LOG("offset=%i, a=%i\n", (Uint)offset, a);
\r
675 VFS_ReadAt(disk->fileHandle, offset*512, 512, fileinfo); // Read Dir Data
\r
677 LOG("name[0] = 0x%x\n", (Uint8)fileinfo[a].name[0]);
\r
678 //Check if this is the last entry
\r
679 if(fileinfo[a].name[0] == '\0') {
\r
680 dirNode->Size = dirpos;
\r
681 LOG("End of list\n");
\r
683 return NULL; // break
\r
686 // Check for empty entry
\r
687 if((Uint8)fileinfo[a].name[0] == 0xE5) {
\r
688 LOG("Empty Entry\n");
\r
689 LEAVE('p', VFS_SKIP);
\r
690 return VFS_SKIP; // Skip
\r
694 // Get Long File Name Cache
\r
695 lfn = FAT_int_GetLFN(dirNode);
\r
696 if(fileinfo[a].attrib == ATTR_LFN)
\r
698 fat_longfilename *lfnInfo;
\r
701 lfnInfo = (fat_longfilename *) &fileinfo[a];
\r
702 if(lfnInfo->id & 0x40) memset(lfn, 0, 256);
\r
703 // Get the current length
\r
706 // Sanity Check (FAT implementations do not allow >255 bytes)
\r
707 if(len + 13 > 255) return VFS_SKIP;
\r
708 // Rebase all bytes
\r
709 for(a=len+1;a--;) lfn[a+13] = lfn[a];
\r
711 // Append new bytes
\r
712 lfn[ 0] = lfnInfo->name1[0]; lfn[ 1] = lfnInfo->name1[1];
\r
713 lfn[ 2] = lfnInfo->name1[2]; lfn[ 3] = lfnInfo->name1[3];
\r
714 lfn[ 4] = lfnInfo->name1[4];
\r
715 lfn[ 5] = lfnInfo->name2[0]; lfn[ 6] = lfnInfo->name2[1];
\r
716 lfn[ 7] = lfnInfo->name2[2]; lfn[ 8] = lfnInfo->name2[3];
\r
717 lfn[ 9] = lfnInfo->name2[4]; lfn[10] = lfnInfo->name2[5];
\r
718 lfn[11] = lfnInfo->name3[0]; lfn[12] = lfnInfo->name3[1];
\r
719 LEAVE('p', VFS_SKIP);
\r
724 //Check if it is a volume entry
\r
725 if(fileinfo[a].attrib & 0x08) {
\r
726 LEAVE('p', VFS_SKIP);
\r
730 if(fileinfo[a].name[0] == '.') {
\r
731 LEAVE('p', VFS_SKIP);
\r
735 LOG("name='%c%c%c%c%c%c%c%c.%c%c%c'\n",
\r
736 fileinfo[a].name[0], fileinfo[a].name[1], fileinfo[a].name[2], fileinfo[a].name[3],
\r
737 fileinfo[a].name[4], fileinfo[a].name[5], fileinfo[a].name[6], fileinfo[a].name[7],
\r
738 fileinfo[a].name[8], fileinfo[a].name[9], fileinfo[a].name[10] );
\r
741 //node = FAT_int_CreateNode(dirNode, &fileinfo[a], lfn);
\r
742 ret = FAT_int_CreateName(dirNode, &fileinfo[a], lfn);
\r
745 //node = FAT_int_CreateNode(dirNode, &fileinfo[a], NULL);
\r
746 ret = FAT_int_CreateName(dirNode, &fileinfo[a], NULL);
\r
754 * \fn tVFS_Node *FAT_FindDir(tVFS_Node *node, char *name)
\r
755 * \brief Finds an entry in the current directory
\r
757 tVFS_Node *FAT_FindDir(tVFS_Node *node, char *name)
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759 fat_filetable fileinfo[16];
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762 fat_longfilename *lfnInfo;
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764 int lfnPos=255, lfnId = -1;
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767 tVFS_Node *tmpNode;
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769 tFAT_VolInfo *disk = &gFAT_Disks[node->ImplInt];
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773 ENTER("pnode sname", node, name);
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776 if(!name) return NULL;
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777 if(name[0] == '\0') return NULL;
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780 lfn = FAT_int_GetLFN(node);
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783 dirCluster = node->Inode;
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784 // Seek to Directory
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785 if( dirCluster == disk->rootOffset && disk->type != FAT32 )
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786 diskOffset = (disk->bootsect.resvSectCount+dirCluster*disk->bootsect.spc) << 9;
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788 diskOffset = (disk->firstDataSect+(dirCluster-2)*disk->bootsect.spc) << 9;
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793 if((i & 0xF) == 0) {
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794 VFS_ReadAt(disk->fileHandle, diskOffset, 512, fileinfo);
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798 //Check if the files are free
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799 if(fileinfo[i&0xF].name[0] == '\0') break; //Free and last
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800 if(fileinfo[i&0xF].name[0] == '\xE5') goto loadCluster; //Free
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804 // Long File Name Entry
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805 if(fileinfo[i&0xF].attrib == ATTR_LFN)
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807 lfnInfo = (fat_longfilename *) &fileinfo[i&0xF];
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808 if(lfnInfo->id & 0x40) {
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809 memset(lfn, 0, 256);
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812 lfn[lfnPos--] = lfnInfo->name3[1]; lfn[lfnPos--] = lfnInfo->name3[0];
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813 lfn[lfnPos--] = lfnInfo->name2[5]; lfn[lfnPos--] = lfnInfo->name2[4];
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814 lfn[lfnPos--] = lfnInfo->name2[3]; lfn[lfnPos--] = lfnInfo->name2[2];
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815 lfn[lfnPos--] = lfnInfo->name2[1]; lfn[lfnPos--] = lfnInfo->name2[0];
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816 lfn[lfnPos--] = lfnInfo->name1[4]; lfn[lfnPos--] = lfnInfo->name1[3];
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817 lfn[lfnPos--] = lfnInfo->name1[2]; lfn[lfnPos--] = lfnInfo->name1[1];
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818 lfn[lfnPos--] = lfnInfo->name1[0];
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819 if((lfnInfo->id&0x3F) == 1)
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821 memcpy(lfn, lfn+lfnPos+1, 256-lfnPos);
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827 // Remove LFN if it does not apply
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828 if(lfnId != i) lfn[0] = '\0';
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830 // Get Real Filename
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831 FAT_int_ProperFilename(tmpName, fileinfo[i&0xF].name);
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833 LOG("tmpName = '%s'\n", tmpName);
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835 //Only Long name is case sensitive, 8.3 is not
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837 if(strucmp(tmpName, name) == 0 || strcmp(lfn, name) == 0) {
\r
839 if(strucmp(tmpName, name) == 0) {
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841 cluster = fileinfo[i&0xF].cluster | (fileinfo[i&0xF].clusterHi << 16);
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842 tmpNode = Inode_GetCache(disk->inodeHandle, cluster);
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843 if(tmpNode == NULL) // Node is not cached
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846 tmpNode = FAT_int_CreateNode(node, &fileinfo[i&0xF], lfn);
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848 tmpNode = FAT_int_CreateNode(node, &fileinfo[i&0xF], NULL);
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854 LEAVE('p', tmpNode);
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862 //Load Next cluster?
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863 if( ((i+1) >> 4) % disk->bootsect.spc == 0 && ((i+1) & 0xF) == 0)
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865 if( dirCluster == disk->rootOffset && disk->type != FAT32 )
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867 dirCluster = FAT_int_GetFatValue(node->ImplInt, dirCluster);
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868 diskOffset = (disk->firstDataSect+(dirCluster-2)*disk->bootsect.spc)*512;
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877 * \fn int FAT_Mknod(tVFS_Node *Node, char *Name, Uint Flags)
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878 * \brief Create a new node
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880 int FAT_Mknod(tVFS_Node *Node, char *Name, Uint Flags)
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886 * \fn int FAT_Relink(tVFS_Node *Node, char *OldName, char *NewName)
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887 * \brief Rename / Delete a file
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889 int FAT_Relink(tVFS_Node *Node, char *OldName, char *NewName)
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895 * \fn void FAT_CloseFile(tVFS_Node *Node)
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896 * \brief Close an open file
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898 void FAT_CloseFile(tVFS_Node *Node)
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900 if(Node == NULL) return ;
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902 Inode_UncacheNode(gFAT_Disks[Node->ImplInt].inodeHandle, Node->Inode);
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904 if( !Inode_GetCache(gFAT_Disks[Node->ImplInt].inodeHandle, Node->Inode)
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905 && Node->Flags & VFS_FFLAG_DIRECTORY)
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906 FAT_int_DelLFN(Node);
\r
907 else // Get Cache references the node, so dereference it
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908 Inode_UncacheNode(gFAT_Disks[Node->ImplInt].inodeHandle, Node->Inode);
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914 * \fn void fat_install()
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915 * \brief Add the FAT Filesystem to the VFS
\r
919 VFS_AddDriver( &gFAT_FSInfo );
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