How to deploy file to MyDcos/ or make it writable???

[rhythmkay]

How to deploy file to MyDcos/ ???
I want to deploy a writable file (as larga as 5 Mb),which can be writtable in my N9 application.
However i cant use postinst file to use commands to cp it to MyDocs/(This falied as if because the file is somehow too lage ,5 Mb)
Besides i try to use chmod to change some file's permission which located at opt/myproject/ (To enable them to be writable again).However ,all these tries failed again and again.

So now I am very needing some infomation or tips for solving these problem.That is to make file packaged in deb application can writable in my N9 application...

Does anyone have some ideas?Please hlep me......

This is my codes in postinst file

#!/bin/sh
chmod 666 /opt/chinaTrain/qml/chinaTrain/Databases/a2c2991211de1a0745e933b93e672a13.sqlite
chmod 666 /opt/chinaTrain/qml/chinaTrain/Databases/a2c2991211de1a0745e933b93e672a13.ini
exit 0

and while i do so,the qml console debug show infomation below:
file:///opt/chinaTrain/qml/chinaTrain/TravelPage.qml:173: Error: unable to open database file Unable to fetch row

[mikkovtr]

Hmm, maybe just show the failing postinst so we could probably fix it for you? Showing the exact errors would help too.

[rhythmkay]

I have show my codes now.
I dont know why i fail
My conncetion to the database is correct.I can query but cant write to it.

I've got some information from this ,http://talk.maemo.org/archive/index.php/t-71608.html
however ,it seems didnt work.
Or how to use this:??

Some permissions get "fixed" during install.
The debian/rules file includes the call to dh_fixperms (http://man.he.net/man1/dh_fixperms). //What is this means ,take my file below as example ,how to use the dh_fixperms????

[mikkovtr]

What are the actual file permissions after install? From terminal use "ls -l /path/to/your/file"

Also the "Error: unable to open database file Unable to fetch row" message doesn't seem to be about writing but about reading. Are you able to read from database?

[rhythmkay]

Yeah,I can read from it,but cant write,such as i cant create a table in the database.
It behaves well in reading data,in contrast to writting data.

[tkastlunger]

Yeah,I can read from it,but cant write,such as i cant create a table in the database.
It behaves well in reading data,in contrast to writting data.

Perhaps you should consider copying the file from within the app (if it does not exist, that is)?