Re: bonding: cannot remove certain named devices

From: Mitch Williams
Date: Tue Aug 15 2006 - 18:40:38 EST

On Tue, 15 Aug 2006, Bill Nottingham wrote:
> Stephen Hemminger (shemminger@xxxxxxxx) said:
> > > They're certainly allowed, and the sysfs directory structure, files,
> > > etc. handle it ok. Userspace tends to break in a variety of ways.
> > >
> > > I believe the only invalid character in an interface name is '/'.
> > >
> >
> > The names "." and ".." are also verboten.
> Right. Well, I suspect they're verboten-because-some-code-breaks-making-the-directory.
> > Names with : in them are for IP aliases.

So can we use
sscanf(buffer, " %[^\n]", command);
instead? This should allow for whitespace in the filename. Bad interface
names will be caught by the call to dev_valid_name().

(I think I'm reading the man page correctly.)

This could have the effect of making the parser way more finicky, though,
since we would allow trailing whitespace. Technically I suppose it's
legal, but it's sure hard to see on the screen.

Anybody have a better solution?

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