Miklos Szeredi <mik...@szeredi.hu> wrote: > > However, as I have said, I *am* willing to add one of more flags to help > > with this, but I can't make any "legacy" fs honour them as this requires > > the fs_context to be passed down to sget_fc() and the filesystem - which > > is why I was considering leaving it for later. > > You can determine at fsopen() time whether the filesystem is able to > support the O_EXCL behavior? If so, then it's trivial to enable this > conditionally. I think that's what Eric is asking for, it's obviously > not fair to ask for a change in behavior of the legacy interface.
What do you mean by "enable it conditionally"? It cannot be enabled for filesystems that don't pass fs_context down to sget(). mount(2) mustn't enable it lest it break userspace. fsopen(2) can let userspace set a flag to enable it. David
