[Gambas-user] COPY does not always copy chgrp and chown

[Benoît Minisini]

> Just found this (Gambas 2 project) when copying several students from
> one class into another. For each student, there are about 6 files to be
> copied from one directory into another. The first one will always get
> standard chgrp and chown of the application's user. The other files
> SOMETIMES are copied with correct group and ownership, MOSTLY not.
>
> All files have special group and ownership, controlling if teachers or
> only the office can access the data.
>
> Now, this is the function that does the actual copy:
>
>
>
> 'kopiert alle Dateien eines Namens in eine andere Kartei
> '- ziel ist der Zielpfad
> '- wenn eine gleichnamige Datei schon vorhanden ist, kommt "-1" zurück
> '- wenn es geklappt hat, kommt "0" zurück
>
> 'wird z. B. von dlgNamenKopieren benutzt
>
> PUBLIC FUNCTION NamenKopieren(schlyssel AS String, ziel AS String) AS
> Integer
> DIM original AS String
> DIM odatei AS String
> DIM opfad AS String
> DIM datei AS String
>
>    original = getFilename(schlyssel)
>
>    odatei = file.BaseName(original)
>    opfad = file.Dir(original)
>
>    IF Exist(ziel &/ odatei & ".felder") THEN
>      RETURN -1
>    END IF
>
>    FOR EACH datei IN Dir(opfad, odatei & ".*")
>      COPY opfad &/ datei TO ziel &/ datei
>    NEXT
>
>    RETURN 0
>
> END
>
>
> Do you see anything wrong here? As it sometimes works correctly I would
> actually think that it's a bug in copy.
>
> The filesystem is ext3.
>
> Regards
>
> Rolf
>

COPY actually does the same thing as opening the input file, opening the 
output file, reading the data, writing the data, closing the input gile, 
closing the output file.

So the output file will have the same authorizations as the input file, except 
that they are filtered by the "umask" (man umask) and that the file will be 
owned by the process who wrote the file.

COPY is there just for simple cases.

I suggest you use the "cp" command, using the "--preserve" option.

Regards,

-- 
Benoît