[Patch] let KSaveFile honor the umask

David Faure faure at kde.org
Wed Mar 26 22:22:03 GMT 2008

On Wednesday 26 March 2008, Thiago Macieira wrote:
> David Faure wrote:
> >On Wednesday 26 March 2008, Thiago Macieira wrote:
> >> Thorsten Zachmann wrote:
> >> >Hello all,
> >> >
> >> >KSaveFile does not honor the umask for newly created files. Looks
> >> > like this behaviour was introduces during the port to QTemporaryFile
> >> > which by default creates file with permissions 0600. This is good
> >> > for temporary files but for a file saved by an application it is
> >> > not. The attached patch changes the behaviour so that the KSaveFile
> >> > does honor the umask for files that are newly created.
> >> >
> >> >Ok to commit?
> >>
> >> By calling umask, you make the code thread-unsafe.
> >
> >Well, this code comes from ktempdir.cpp which uses umask too.
> And KTempDir was thread-unsafe.
> >And we never really checked which kdelibs classes are threadsafe, but
> > it's not too late to start I guess.
> True, but QTemporaryFile and KTemporaryFile are thread-safe now (to the 
> best of my knowledge). This change of yours would break that.
> >In both classes, all we want is to "get" the umask, not to set it. How
> > about we get the umask in some code called during initialization, like
> > the KGlobalPrivate ctor, and we add a KGlobal::umask() accessor?
> That's a compromise, but what if the user sets the umask to something else 
> in the middle of the program?

That's a 0.000001% use case, and I'm forgetting some zeros.
I'm really really fine with the requirement that the user has to restart the 
KDE application(s) that should obey the newly set umask
(or logout/login if we're talking about the always-running applications
like konqueror-preloaded for instance).
Aren't you?

David Faure, faure at kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).

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