+ int end_id = -1;
+ int range_first = 0, range_last = -1;
+ for( int id = 0; ; id ++ )
+ {
+ if( id % eps == 0 )
+ {
+ if(FAT_int_ReadDirSector(DirNode, id/eps, fileinfo))
+ break; // end of cluster chain
+ }
+
+ // End of file list, break out
+ if( fileinfo[id%eps].name[0] == '\0' ) {
+ if( id - range_first == nLFNEnt )
+ range_last = id;
+ end_id = id;
+ break;
+ }
+
+ // If an entry is occupied, clear the range
+ if( fileinfo[id%eps].name[0] != '\xE5' ) {
+ range_first = id + 1;
+ continue ;
+ }
+
+ // Free entry, check if we have enough
+ if( id - range_first == nLFNEnt ) {
+ range_last = id;
+ break;
+ }
+ // Check the next one
+ }
+ if( range_last == -1 )
+ {
+ // - If there are none, defragment the directory?
+
+ // - Else, expand the directory
+ if( end_id == -1 ) {
+ // End of cluster chain
+ }
+ else {
+ // Just end of block
+ }
+ // - and if that fails, return an error
+ Log_Warning("FAT", "TODO: Impliment directory expansion / defragmenting");
+ Mutex_Release(&DirNode->Lock);
+ return ENOTIMPL;
+ }
+
+ // Calculate the checksum used for LFN
+ Uint8 lfn_checksum = 0;
+ if( nLFNEnt )
+ {
+ lfn_checksum = FAT_int_MakeLFNChecksum(ft.name);
+ }
+
+ // Insert entries
+ if( range_first % eps != 0 )
+ FAT_int_ReadDirSector(DirNode, range_first/eps, fileinfo);
+ for( int id = range_first; id <= range_last; id ++ )
+ {
+ if( id % eps == 0 ) {
+ if( id != range_first )
+ FAT_int_WriteDirSector(DirNode, (id-1)/eps, fileinfo);
+ FAT_int_ReadDirSector(DirNode, id/eps, fileinfo);
+ }
+
+ if( id == range_last ) {
+ // Actual entry
+ memcpy(fileinfo + id % eps, &ft, sizeof(fat_filetable));
+ }
+ else {
+ // Long filename
+ int lfnid = (nLFNEnt - (id - range_first));
+ int ofs = (lfnid-1) * 13;
+ int i=0, j=0;
+ fat_longfilename *lfnent = (void*)( fileinfo + id%eps );
+
+ lfnent->id = 0x40 | lfnid;
+ lfnent->attrib = ATTR_LFN;
+ lfnent->type = 0;
+ lfnent->firstCluster = 0;
+ lfnent->checksum = lfn_checksum; // ???
+
+ for( i = 0; i < 13; i ++ )
+ {
+ Uint16 wd;
+ if( (wd = lfn[ofs+j]) ) j ++;
+ wd = LittleEndian16(wd);
+ if(i < 5)
+ lfnent->name1[i ] = wd;
+ else if( i < 5+6 )
+ lfnent->name2[i-5 ] = wd;
+ else
+ lfnent->name3[i-5-6] = wd;
+ }
+ }
+ }
+ FAT_int_WriteDirSector(DirNode, range_last/eps, fileinfo);