0000959: Multiple reads of CONV command result in timeout issues, because file is moved after close

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Date Submitted

Last Update

0000959

FL5

1.1 FLCL

public

2019-02-06 10:31

2019-03-17 19:24

Reporter

Falk Reichbott

Assigned To

Falk Reichbott

Priority

high

Severity

major

Reproducibility

sometimes

Status

resolved

Resolution

fixed

Platform

General

OS Version

General

Product Version

5.1.19

Target Version

5.1.21

Fixed in Version

5.1.20

Summary

0000959: Multiple reads of CONV command result in timeout issues, because file is moved after close

Description

To try ZIP/TAR/FLAM archives the CONV command use a automatism, where each of the archive I/O components opens the file try to read it and if it not the corresponding format it close the file. At the end the file is open by the FIO.BLK component.

Depending on the system configuration where the file is read from, a close of the file result in a move of the file to another location and the next read failed.

To solve such an error the close() of the file must replaced by a rewind() and the open file handle must be given from one to another component, but this is not really possible, because each component opens the file in different ways.

FIO.ZIP use byte seek, FIO.FL4 is a LE-less own file handle not compatible wit LE file handles. FIO.BLK use no byte seek files.

The only way to solve this, is to disable the "Archive-Trying" and to implement the archive formats as converters and not as I/O.

This is really difficult.

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Notes
(0001213) Falk Reichbott (administrator) 2019-02-17 18:00	In this case the XCNV command must be used to prevent try and error handling as automatism in CONV command. We plan to implement a switch for CONV command to disable the archive support at read.

(0001224) Falk Reichbott (administrator) 2019-03-17 19:24	Introduce NOARCH switch in CONV command to disable try of different archive formats.

Issue History
Date Modified	Username	Field	Change
2019-02-06 10:31	Falk Reichbott	New Issue
2019-02-06 10:31	Falk Reichbott	Status	new => assigned
2019-02-06 10:31	Falk Reichbott	Assigned To	=> Falk Reichbott
2019-02-17 18:00	Falk Reichbott	Note Added: 0001213
2019-02-28 17:36	Falk Reichbott	Target Version	5.1.21 => 5.1.20
2019-03-15 15:15	Falk Reichbott	Target Version	5.1.20 => 5.1.21
2019-03-17 19:24	Falk Reichbott	Note Added: 0001224
2019-03-17 19:24	Falk Reichbott	Status	assigned => resolved
2019-03-17 19:24	Falk Reichbott	Fixed in Version	=> 5.1.20
2019-03-17 19:24	Falk Reichbott	Resolution	open => fixed