Re: cua* on kernel 2.1 and beyond

Tymm Twillman (
Fri, 4 Dec 1998 23:14:24 -0600

> On Thu, 3 Dec 1998, Tymm Twillman wrote:
> > ln -s /dev/ttyS0 /dev/cua0
> This is bad!
> A process using /dev/cua0 will create a lockfile named cua0. Another
> process wanting to use /dev/ttyS0, will look for a lockfile named
> ttyS0. When it is not found, that process will go ahead and open
> ttyS0 and collide with the data being transferred on cua0.
> A complex locking routine can be used. See my blurb on lockfiles and
> a sample routine to creat either dual lockfiles or single ones.
> This is available from via ftp. The tarball is
> pub/linux/serial_suite.tgz.
> vern

Yep, I really bumbled this one up. Apologies for the bad advice.


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