文件名称：TFFS文件系统详解（Transaction Flash FileSystem (TFFS) Description）
文件大小：155KB
文件格式：PDF
更新时间：2021-10-10 04:24:43
TFFS
Table of Contents 1 Introduction ...................................................................................................... 4 1.1 Scope ................................................................................................................... 4 1.2 Background ......................................................................................................... 4 1.3 Overview ............................................................................................................. 4 1.4 Implemented File Functionality ......................................................................... 5 1.4.1 Basic ............................................................................................................................... 5 1.4.2 Access Attributes ............................................................................................................ 5 1.4.3 Protective Mode .............................................................................................................. 7 1.4.4 Access Monitor ............................................................................................................... 7 1.5 Disk Usage Saturation ........................................................................................ 7 2 Application Programming Interfaces (APIs) .................................................. 9 2.1 The TFFS Protection Application Programming Interface (TP-API) ................ 9 2.1.1 TFFS Usage Protection .................................................................................................. 9 2.1.1.1 Pseudo Code Example .......................................................................................... 9 2.1.1.2 Posix Code Example ............................................................................................ 10 2.1.1.3 sig_semRead ....................................................................................................... 11 2.1.1.4 sig_semWrite ....................................................................................................... 11 2.1.1.5 wai_semRead ...................................................................................................... 11 2.1.1.6 wai_semWrite....................................................................................................... 11 2.1.2 Protective Mode Application Programming Interface ................................................... 11 2.1.3 Monitor Protection Application Programming Interface ................................................ 11 2.2 The TFFS User Application Programming Interface (TU-API) ....................... 13 2.2.1 tffsChange .................................................................................................................... 13 2.2.2 tffsChdir ........................................................................................................................ 14 2.2.3 tffsClearerr .................................................................................................................... 14 2.2.4 tffsDelete ....................................................................................................................... 15 2.2.5 tffsDiagMode ................................................................................................................. 15 2.2.6 tffsExists ....................................................................................................................... 16 2.2.7 tffsFclose ...................................................................................................................... 16 2.2.8 tffsFeof .......................................................................................................................... 17 2.2.9 tffsFerror ....................................................................................................................... 17 2.2.10 tffsFflush ....................................................................................................................... 17 2.2.11 tffsFopen ....................................................................................................................... 18 2.2.12 tffsFormat ...................................................................................................................... 19 2.2.13 tffsFread ........................................................................................................................ 20 2.2.14 tffsFseek ....................................................................................................................... 20 2.2.15 tffsFwrite ....................................................................................................................... 21 2.2.16 tffsGetBlockInfo ............................................................................................................ 21 2.2.17 tffsGetPath .................................................................................................................... 22 2.2.18 tffsGetRoot .................................................................................................................... 22 2.2.19 tffsInit ............................................................................................................................ 22 2.2.20 tffsLsdir ......................................................................................................................... 23 2.2.21 tffsMkdir ........................................................................................................................ 24 2.2.22 tffsMonitorAdd ............................................................................................................... 25 2.2.23 tffsMonitorRemove ........................................................................................................ 26 2.2.24 tffsMount ....................................................................................................................... 27 2.2.25 tffsReclaim .................................................................................................................... 28 2.2.26 tffsResize ...................................................................................................................... 29 2.2.27 tffsRewind ..................................................................................................................... 29 2.2.28 tffsTruncate ................................................................................................................... 30 2.2.29 tffsUnmount .................................................................................................................. 30