[
https://issues.apache.org/jira/browse/CB-10164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Shuqian Ying updated CB-10164:
------------------------------
Description:
The plugin does not allow seeking beyond the current length of a file using the
following code to enforce it:
if (offset > this.length) {
this.position = this.length;
}
in the FileWriter.js file.
We found this to cause a lot of issues in random access concurrent write
application scenarios since it modifies the semantics of seek silently that may
cause file corruption without informing the client what went wrong. Our
application behaves correctly after removing such a restriction.
We belief that such a restriction should be removed since file systems in most
underlying OSs allow seeking beyond the current data end of a file (like
Windows and *nix family of OSs), it's a POSIX.1 standard, adding a restriction
on top of them does not make sense. If such a restriction is required, it maybe
is better to throw an exception instead of "decide what to do for the client".
was:
The plugin does not allow seeking beyond the current length of a file using the
following code the enforce it:
if (offset > this.length) {
this.position = this.length;
}
in the FileWriter.js file.
We found this to cause a lot of issues in random access concurrent write
application scenarios since it modifies the semantics of seek silently that may
cause file corruption without informing the client what went wrong. Our
application behaves correctly after removing such a restriction.
We belief that such a restriction should be removed since file systems in most
underlying OSs allow seeking beyond the current data end of a file (like
Windows and *nix family of OSs), it's a POSIX.1 standard, adding a restriction
on top of them does not make sense. If such a restriction is required, it maybe
is better to throw an exception instead of "decide what to do for the client".
> Allow seeking beyond current data end of a file
> -----------------------------------------------
>
> Key: CB-10164
> URL: https://issues.apache.org/jira/browse/CB-10164
> Project: Apache Cordova
> Issue Type: Improvement
> Components: Plugin File
> Reporter: Shuqian Ying
>
> The plugin does not allow seeking beyond the current length of a file using
> the following code to enforce it:
> if (offset > this.length) {
> this.position = this.length;
> }
> in the FileWriter.js file.
> We found this to cause a lot of issues in random access concurrent write
> application scenarios since it modifies the semantics of seek silently that
> may cause file corruption without informing the client what went wrong. Our
> application behaves correctly after removing such a restriction.
> We belief that such a restriction should be removed since file systems in
> most underlying OSs allow seeking beyond the current data end of a file (like
> Windows and *nix family of OSs), it's a POSIX.1 standard, adding a
> restriction on top of them does not make sense. If such a restriction is
> required, it maybe is better to throw an exception instead of "decide what to
> do for the client".
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