34 static int _mi_find_writepos(MI_INFO *info,ulong reclength,my_off_t *filepos,
36 static int update_dynamic_record(MI_INFO *info,my_off_t filepos,uchar *record,
38 static int delete_dynamic_record(MI_INFO *info,my_off_t filepos,
40 static int _mi_cmp_buffer(File file, const uchar *buff, my_off_t filepos,
340   my_off_t filepos;  in write_dynamic_record()  local
369     if (_mi_find_writepos(info,reclength,&filepos,&length))  in write_dynamic_record()
371     if (_mi_write_part_record(info,filepos,length,  in write_dynamic_record()
388 			     my_off_t *filepos, /* Return file pos */  in _mi_find_writepos()  argument
399     *filepos=info->s->state.dellink;  in _mi_find_writepos()
417     *filepos=info->state->data_file_length;  in _mi_find_writepos()
451   if (block_info->filepos == info->s->state.dellink)  in unlink_deleted_block()
491   if (info->nextpos == block_info->filepos)  in unlink_deleted_block()
513 				       my_off_t filepos)  in update_backward_delete_link()  argument
525       mi_sizestore(buff,filepos);  in update_backward_delete_link()
541 static int delete_dynamic_record(MI_INFO *info, my_off_t filepos,  in delete_dynamic_record()  argument
551   error= update_backward_delete_link(info, info->s->state.dellink, filepos);  in delete_dynamic_record()
557     if ((b_type=_mi_get_block_info(&block_info,info->dfile,filepos))  in delete_dynamic_record()
560 	(length=(uint) (block_info.filepos-filepos) +block_info.block_len) <  in delete_dynamic_record()
569     if (_mi_get_block_info(&del_block,info->dfile,filepos+length) &  in delete_dynamic_record()
584     if (info->s->file_write(info,(uchar*) block_info.header,20,filepos,  in delete_dynamic_record()
587     info->s->state.dellink = filepos;  in delete_dynamic_record()
590     filepos=block_info.next_filepos;  in delete_dynamic_record()
604 			  my_off_t filepos,	/* points at empty block */  in _mi_write_part_record()  argument
722     my_off_t next_block=filepos+length+extra_length+res_length;  in _mi_write_part_record()
745     info->s->state.dellink= filepos+length+extra_length;  in _mi_write_part_record()
757 			 length+extra_length+del_length,filepos))  in _mi_write_part_record()
768 		  del_length,filepos,info->s->write_flag))  in _mi_write_part_record()
793 static int update_dynamic_record(MI_INFO *info, my_off_t filepos, uchar *record,  in update_dynamic_record()  argument
823     if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
850     if (filepos != info->s->state.dellink)  in update_dynamic_record()
853       if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
862       length=(ulong) (block_info.filepos-filepos) + block_info.block_len;  in update_dynamic_record()
870 	if (block_info.filepos + block_info.block_len ==  in update_dynamic_record()
895 				 block_info.filepos + block_info.block_len) &  in update_dynamic_record()
911 	      next_pos= del_block.filepos+ del_block.block_len - rest_length;  in update_dynamic_record()
937       if (_mi_find_writepos(info,reclength,&filepos,&length))  in update_dynamic_record()
940     if (_mi_write_part_record(info,filepos,length,block_info.next_filepos,  in update_dynamic_record()
943     if ((filepos=block_info.next_filepos) == HA_OFFSET_ERROR)  in update_dynamic_record()
946       filepos=info->s->state.dellink;  in update_dynamic_record()
1442 int _mi_read_dynamic_record(MI_INFO *info, my_off_t filepos, uchar *buf)  in _mi_read_dynamic_record()  argument
1451   if (filepos != HA_OFFSET_ERROR)  in _mi_read_dynamic_record()
1459       if (filepos == HA_OFFSET_ERROR)  in _mi_read_dynamic_record()
1462 	  info->rec_cache.pos_in_file < filepos + MI_BLOCK_INFO_HEADER_LENGTH &&  in _mi_read_dynamic_record()
1466       if ((b_type= _mi_get_block_info(&block_info, file, filepos))  in _mi_read_dynamic_record()
1492         uint offset= (uint) (block_info.filepos - filepos);  in _mi_read_dynamic_record()
1494         filepos+= sizeof(block_info.header);  in _mi_read_dynamic_record()
1510             info->rec_cache.pos_in_file < filepos + block_info.data_len &&  in _mi_read_dynamic_record()
1519                                filepos, MYF(MY_NABP)))  in _mi_read_dynamic_record()
1524       filepos= block_info.next_filepos;  in _mi_read_dynamic_record()
1576   my_off_t filepos;  in _mi_cmp_dynamic_record()  local
1603     filepos=info->lastpos;  in _mi_cmp_dynamic_record()
1605     block_info.next_filepos=filepos;  in _mi_cmp_dynamic_record()
1631       if (_mi_cmp_buffer(info->dfile,record,block_info.filepos,  in _mi_cmp_dynamic_record()
1651 static int _mi_cmp_buffer(File file, const uchar *buff, my_off_t filepos,  in _mi_cmp_buffer()  argument
1658   next_length= IO_SIZE*2 - (uint) (filepos & (IO_SIZE-1));  in _mi_cmp_buffer()
1662     if (mysql_file_pread(file, temp_buff, next_length, filepos, MYF(MY_NABP)) ||  in _mi_cmp_buffer()
1665     filepos+=next_length;  in _mi_cmp_buffer()
1670   if (mysql_file_pread(file, temp_buff, length, filepos, MYF(MY_NABP)))  in _mi_cmp_buffer()
1713 				register my_off_t filepos,  in _mi_read_rnd_dynamic_record()  argument
1746     if (filepos >= info->state->data_file_length)  in _mi_read_rnd_dynamic_record()
1755       if (filepos >= info->state->data_file_length)  in _mi_read_rnd_dynamic_record()
1763       if (_mi_read_cache(&info->rec_cache,(uchar*) block_info.header,filepos,  in _mi_read_rnd_dynamic_record()
1768       b_type=_mi_get_block_info(&block_info,-1,filepos);  in _mi_read_rnd_dynamic_record()
1773 	  info->rec_cache.pos_in_file < filepos + MI_BLOCK_INFO_HEADER_LENGTH &&  in _mi_read_rnd_dynamic_record()
1777       b_type=_mi_get_block_info(&block_info,info->dfile,filepos);  in _mi_read_rnd_dynamic_record()
1787           filepos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1799 	info->lastpos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1800 	info->nextpos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1808       info->lastpos=filepos;  in _mi_read_rnd_dynamic_record()
1824       uint offset=(uint) (block_info.filepos - filepos);  in _mi_read_rnd_dynamic_record()
1826       filepos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1836 	filepos+=tmp_length;  in _mi_read_rnd_dynamic_record()
1844 	if (_mi_read_cache(&info->rec_cache,(uchar*) to,filepos,  in _mi_read_rnd_dynamic_record()
1854             block_info.filepos + block_info.data_len &&  in _mi_read_rnd_dynamic_record()
1873       info->nextpos= block_info.filepos + block_info.block_len;  in _mi_read_rnd_dynamic_record()
1878     filepos=block_info.next_filepos;  in _mi_read_rnd_dynamic_record()
1899 uint _mi_get_block_info(MI_BLOCK_INFO *info, File file, my_off_t filepos)  in _mi_get_block_info()  argument
1911     mysql_file_seek(file, filepos, MY_SEEK_SET, MYF(0));  in _mi_get_block_info()
1935     info->filepos=filepos;  in _mi_get_block_info()
1951     info->filepos=filepos+3;  in _mi_get_block_info()
1955     info->filepos=filepos+4;  in _mi_get_block_info()
1963     info->filepos=filepos+16;  in _mi_get_block_info()
1969     info->filepos=filepos+4;  in _mi_get_block_info()
1974     info->filepos=filepos+5;  in _mi_get_block_info()
1982     info->filepos=filepos+13;  in _mi_get_block_info()
1989     info->filepos=filepos+15;  in _mi_get_block_info()
1995     info->filepos=filepos+3;  in _mi_get_block_info()
1999     info->filepos=filepos+4;  in _mi_get_block_info()
2005     info->filepos=filepos+4;  in _mi_get_block_info()
2010     info->filepos=filepos+5;  in _mi_get_block_info()
2017     info->filepos=filepos+11;  in _mi_get_block_info()
2023     info->filepos=filepos+12;  in _mi_get_block_info()