Transaction Flash FileSystem (TFFS) Description
Tevero AS 2(34) Rev. 2.6.3, 2007-03-16
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
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